AGRICULTURE REPORT - Chemicals on Organic Food
化学耕地和有机耕地英语作文
化学耕地和有机耕地英语作文英文回答：Chemical vs. Organic Farming.Chemical farming and organic farming are two distinct agricultural practices that differ in their reliance on synthetic chemicals and natural resources. While chemical farming utilizes chemical fertilizers, pesticides, and herbicides to increase crop yield and control pests, organic farming emphasizes the use of organic matter and biological methods to maintain soil fertility and control pests.Chemical Farming.Chemical farming involves the application of synthetic chemicals to enhance crop production and protect plants from pests and diseases. Chemical fertilizers provide essential nutrients to plants, enabling them to grow fasterand produce higher yields. Pesticides target specific insects or pests that damage crops, while herbicidescontrol weeds that compete with crops for nutrients and sunlight.However, chemical farming has potential drawbacks. Excessive use of chemicals can lead to environmental pollution, water contamination, and soil degradation. Synthetic fertilizers can contribute to nutrient imbalances in soil, damaging ecosystems and aquatic life. Pesticides and herbicides can also harm beneficial insects and organisms, disrupting natural pest control mechanisms.Organic Farming.Organic farming, on the other hand, prioritizes natural processes and inputs. Organic matter, such as manure, compost, and crop residues, is used to replenish soil fertility and improve soil structure. Biological methods, including crop rotation, cover crops, beneficial insects, and natural predators, are employed to maintain pest and weed control.Organic farming aims to enhance soil biodiversity and promote a balanced ecosystem. By avoiding synthetic chemicals, organic farmers preserve the natural balance of soil microorganisms, beneficial insects, and other organisms. This approach helps to reduce environmental pollution, protect water quality, and promote soil health.Comparison of Chemical and Organic Farming.Crop Yield:Chemical farming generally produces higher crop yields due to the use of synthetic fertilizers and pesticides.Organic farming yields may be lower in some cases but can still provide a sustainable and nutritious food source.Environmental Impact:Chemical farming has a greater negative impact on the environment, leading to pesticide and herbicide runoff,water contamination, and soil degradation.Organic farming promotes environmental sustainability by reducing pollution and conserving natural resources.Soil Health:Chemical farming can deplete soil of organic matter and biodiversity.Organic farming improves soil health and increases its fertility over the long term.Consumer Health:Chemical farming residues may pose health concerns for consumers.Organic farming minimizes the risk of consuming synthetic chemicals and promotes the production ofnutrient-rich foods.Sustainability:Chemical farming relies heavily on non-renewable resources and can lead to environmental degradation.Organic farming emphasizes sustainable practices and aims to preserve natural resources for future generations.Conclusion.Chemical and organic farming represent two distinct approaches to agricultural production. Chemical farming focuses on maximizing crop yield and pest control through synthetic chemicals, while organic farming prioritizes natural processes and environmental sustainability. Both methods have their advantages and disadvantages, and the choice between them depends on factors such as environmental concerns, consumer preferences, and resource availability.中文回答：化学耕地和有机耕地。
化学农业有什么优点英语作文
化学农业有什么优点英语作文英文回答：Chemical agriculture, also known as conventional agriculture, has been widely practiced for decades and has several advantages that have contributed to its prevalence.1. High Productivity: Chemical agriculture employs the use of synthetic fertilizers, pesticides, and herbicides, which significantly increase crop yields. These inputs enhance soil fertility, control pests and diseases, and suppress weeds, resulting in higher crop production levels. This increased productivity has helped meet the growing global food demand and reduce hunger and malnutrition.2. Predictable and Consistent Results: Chemical agriculture provides farmers with predictable and consistent results by controlling the variables that affect crop growth. By using standardized fertilizers and pesticides, farmers can maintain consistent crop yields andreduce the risk of crop failures. This predictability allows for better planning and forecasting of agricultural production.3. Cost-Effectiveness: While chemical inputs may have high upfront costs, they often lead to increased yields, which can offset these expenses. The use of chemical fertilizers and pesticides can reduce labor costs associated with manual weeding and pest control. Additionally, chemical agriculture enables farmers to cultivate larger areas of land, further increasing their economic returns.4. Reduced Labor Requirements: Chemical agriculture relies on machinery and chemical inputs rather than intensive manual labor. This has significantly reduced the labor requirements for farming, allowing farmers to manage larger operations with fewer workers. The mechanization of agriculture has also improved efficiency and reduced the physical demands on farmers.5. Improved Quality and Shelf Life: Chemicalagriculture can enhance the quality and shelf life of produce. Pesticides and herbicides help protect crops from pests and diseases that can damage their appearance and reduce their market value. Additionally, fertilizers promote healthy plant growth, resulting in crops withhigher nutritional content and better flavor.中文回答：化学农业的优点：1. 高产性，化学农业采用化肥、农药、除草剂等投入品，大幅提高作物产量。
化学农业和有机农业的英语作文
化学农业和有机农业的英语作文英文回答：Chemical Agriculture vs. Organic Agriculture.Chemical agriculture, also known as conventional agriculture, relies heavily on the use of synthetic fertilizers, pesticides, and herbicides to increase crop yields. While chemical agriculture can lead to higher productivity and reduced crop losses, it also has significant environmental drawbacks.Soil degradation: Synthetic fertilizers can damagesoil structure and reduce its fertility. Pesticides and herbicides can kill beneficial organisms such as earthworms and pollinators, which are essential for a healthy ecosystem.Water pollution: Chemical runoff from agricultural fields can contaminate water sources with nutrients andpesticides, leading to eutrophication and harm to aquatic life.Air pollution: The production and application of synthetic fertilizers release greenhouse gases,contributing to climate change.Organic agriculture, on the other hand, focuses on natural farming practices that minimize the use ofsynthetic inputs. Organic farmers rely on crop rotation, cover crops, organic fertilizers, and biological control to maintain soil health and manage pests.Soil health: Organic farming practices improve soil structure and fertility by increasing organic matter content. Earthworms and other beneficial organisms thrive in organic soils, enhancing soil aeration and nutrient availability.Water quality: Organic farms produce less nutrient runoff compared to conventional farms, reducing the risk of eutrophication and protecting water resources.Biodiversity: Organic farming promotes biodiversity by supporting beneficial insects, birds, and other wildlife. Crop rotation and cover crops provide a variety of habitats for different species.Climate change mitigation: Organic farming practices can contribute to climate change mitigation by sequestering carbon in soil and reducing greenhouse gas emissions.The choice between chemical agriculture and organic agriculture depends on specific circumstances, such as soil type, climate, and market demand. While chemicalagriculture may offer higher yields in the short term, organic agriculture provides longer-term benefits for soil health, environmental sustainability, and food quality.中文回答：化学农业和有机农业。
agriculturalpollution农业污染英语作文
It is reported that China use only 9% of world's farmland to feed 22% of the global population. However, that 9% uses 35% of world's fertilizer and 20% of pesticide. This means agricultural chemicals per unit area are much higher than the world average which leads to agricultural pollution.In recent years, frequent agricultural pollution occurrences have caused great losses in both national economy and farmers' personal properties. The improper use of fertilizers, pesticide and agricultural mulch could lead to agricultural contamination including water pollution, air pollution and soil contamination. Chemical fertilizers and pesticides bring about water quality deterioration. Residual agricultural mulch leads to soil contamination and endangers the physical characteristics of soil. And incinerating straws increases CO2levels in rural areas and raises greenhouse gas emission.Agricultural pollution is non-point source pollution which is harder to control because farmland covers a vast area. But we must do as we can. First of all, the most important thing to solve the problem is to train farmers to use chemicals properly and aware of the danger if do as usual. Secondly, to control pesticide and fertilizer pollution, we should improve the efficiency of pesticide and fertilizer use, so as to reduce the amount of pesticide and fertilizer used in fields. Developing green and organic agricultural production with organic fertilizer instead of chemical fertilizer could do some help also. Thirdly, we should develop recyclable and biodegradable mulch with low cost. In addition, the incineration of straws should be banned nationwide, as straws can be used as paper making, livestock feed, organic fertilizers and so on.We must make our greatest efforts to control and reduce agricultural pollution for ourselves and our future generation. Let’s start it right now.。
对化学农业的看法英语作文
Chemical agriculture, a term that has been both celebrated and criticized, is a complex subject that requires a nuanced understanding. From my perspective as a high school student who has been exposed to various aspects of agriculture through school projects and personal research, I have come to appreciate the benefits of chemical agriculture while also recognizing its potential drawbacks.Growing up in a rural area, I have seen firsthand the impact of chemical agriculture on local farms. The use of chemical fertilizers, pesticides, and herbicides has revolutionized farming practices, allowing for increased crop yields and more efficient use of land. This has been particularly beneficial in regions where the soil is poor or the climate is challenging, as it enables farmers to grow crops that might otherwise be impossible.However, I have also witnessed the negative consequences of chemical agriculture. The overuse of chemicals can lead to soil degradation, loss of biodiversity, and contamination of water sources. This is a serious concern, as it not only affects the environment but also the health of the people who consume the products grown using these methods.One of the most compelling arguments in favor of chemical agriculture is the ability to feed a growing global population. With the worlds population expected to reach nearly 10 billion by 2050, it is crucial to find ways to increase food production sustainably. Chemical agriculture has played a significant role in achieving this goal, as it has allowed for the production of more food on less land.On the other hand, the environmental impact of chemical agriculture cannot be ignored. The use of synthetic fertilizers can lead to nutrient runoff, which pollutes waterways and contributes to dead zones in oceans. Pesticides and herbicides can also harm beneficial insects and other wildlife, disrupting the natural balance of ecosystems.Moreover, there is growing evidence that the longterm use of chemical fertilizers can deplete the soil of essential nutrients, making it less fertile over time. This can lead to a reliance on even more chemicals to maintain crop yields, creating a vicious cycle that is both economically and environmentally unsustainable.As a high school student, I believe that it is important to strike a balance between the benefits and drawbacks of chemical agriculture. This can be achieved through responsible use of chemicals, integrated pest management practices, and the promotion of sustainable farming methods.One potential solution is the adoption of precision agriculture techniques, which use technology to apply chemicals only where they are needed and in the right amounts. This can help to reduce the overall use of chemicals while still maintaining high crop yields.Another approach is to promote the use of organic farming practices, which rely on natural methods of pest control and soil enrichment. While organic farming may not be suitable for all types of crops or regions, it can be a viable alternative in certain situations.In conclusion, chemical agriculture has played a crucial role in meeting the worlds food needs, but it is not without its challenges. As we look to the future, it is essential to find ways to harness the benefits of chemical agriculture while mitigating its negative impacts. This will require a combination of technological innovation, responsible farming practices, and a commitment to sustainable agriculture.。
化学耕地和有机耕地英语作文
Chemical Farming and Organic FarmingAgriculture, the backbone of any nation's economy, has undergone significant transformations over the years. Two major farming techniques that have emerged are chemical farming and organic farming. Both have their merits and drawbacks, but understanding their differences is crucial for sustainable agricultural practices.Chemical FarmingChemical farming relies heavily on synthetic fertilizers and pesticides to enhance crop yield. These chemicals are often produced in factories and applied to crops in high concentrations to promote rapid growth and protect them from pests and diseases.The benefits of chemical farming are apparent. It allows for high yields and ensures that food production meets the demands of a growing population. However, the downsides are equally significant. The overuse of synthetic fertilizers and pesticides can lead to soil degradation, water pollution, and harm to the environment. Moreover, these chemicals can accumulate in the food chain, posing potential health risks to humans and animals.Organic FarmingIn contrast, organic farming relies on natural methods to promote crop growth. It involves the use of compost, manure, and other organic matter to enrich the soil. Pest control is achieved through naturalpredators, crop rotation, and the use of organic pesticides derived from plants or minerals.Organic farming has numerous benefits. It improves soil fertility and structure, resulting in healthier crops. It also reduces the use of synthetic chemicals, thus minimizing environmental pollution. Furthermore, organic produce is often perceived as healthier and safer for consumption.However, organic farming also has its limitations. It often requires more labor and management compared to chemical farming. Additionally, yields may be lower due to the reliance on natural methods rather than synthetic chemicals.ConclusionBoth chemical farming and organic farming have their place in modern agriculture. Chemical farming ensures food security by meeting the demands of a growing population, while organic farming promotes sustainability and environmental protection. A balanced approach that combines the benefits of both techniques while minimizing their drawbacks is crucial for the future of agriculture. Governments, farmers, and consumers need to work together to promote sustainable agricultural practices that ensure food security, protect the environment, and safeguard human health.。
step by step 第二册学生用书
UNIT 21 RADIO PROGRAMS( Ⅰ ) Lesson41 Part ⅠUNIT 21 RADIO PROGRAMS(Ⅰ)Lesson 41Part Ⅰ Warming-up ExercisesPlace NamesAnkara Brussels KampalaLondonRome Rangoon Washington BangkokVienna Warsaw MadridColomboMoscow East Berlin Mexico CityCapitals Countries1._______ Austr ia2._______ Turke y3._______ Spain4._______ Thail and5._______ SriLanka6._______ Poland7._______ the United Kingdom8._______ Burma9._______ Mexic o10.______ Belgi um11.______ East Germany12.______ theSoviet Union13.______ Italy14.______ Uganda15.______ the United StatesScore:_______Lesson 41 Part Ⅱ NewsLesson 41Part Ⅱ NewsExercises:1. (News Item 1)News AnalysisMajor Points:Event: A Haitian ship sank. At least two persons drowned.Time: Early Monday.Place: Off the coast of the state of Florida.Further Information:1. Six persons were able to swim to land.2. Two others are still missing.Ⅱ. (News Item 2)News AnalysisMajor Points:Event: A boat sank. At least______ persons died.Time: During a storm ______.Place: About______ kilometers south of ______.Further Information:1._______ other persons were reported missing.2. More than_______ persons were on the boat.Lesson41 Part Ⅲ AgricultureReport ----AmericanFarmers( Ⅰ )Lesson 41Part Ⅲ Agriculture Report----American Farmers(Ⅰ)Exercises:Ⅰ.1.The role of the farmer has always been __________________.2. Agriculture was and still is America's ______________________.3.American farmers produce more today because they use _________.Ⅱ.1.Two hundred years ago, _______% of American workers were farmers. Today, less than _______% of American workers are farmers.2. American farmers still learn about _____ ,____________,______ _____, and plant and animal diseases, but they also must learn about _______, ______ _____, and even _______.Lesson 42 Part ⅠLesson 42Part Ⅰ Warming-up ExercisesNumbers: Some of the Major Earthquakes in HistoryPlace Date Casualties Degree1.Lisbon,Portugal November1,1755 ______ ______2.San Francisco April 18-19,1906 _______ _____3.Valparaiso,Chile August 16, 1906 ______ ______4.Gansu, China December16,1920 _______ _____5.Japan March 2,1933 ______ ______6.Assam, India August 15, 1950 ______ ______7.Agadir, Morocco February 29,1960 ______ ______8.Northwestern Iran September 1,1962 _______ ______9.Guatemala February 4,1975 _______ ______10.Northeast Iran September 16, 1978 _______ ______Score:______Lesson42 Part Ⅱ NewsLesson42Part ⅡExercises:Ⅰ.(News Item 1)News AnalysisMajor Points:Event: Earthquake. ______persons are now known dead.Time: ______.Place: In northern ______.Further Information:1._____ others are still missing.2.The earthquake created huge _____. The________ drowned many children and workers.Ⅱ.(News Item 2)1.And a strong _______ has shaken the Solomon Islands areaof the_____ _______.2.The_____ measured______ on the Richter scale.3.There have been no reports of ______ or ______ from the _______ .Lesson 42 Part Ⅲ AgricultureReport ----American Farmers ( Ⅱ )Lesson 42PartⅢ Agriculture Report----American Farmers (Ⅱ)Exercises:Ⅰ.1.American farmers now are able to work __________________.2.Almost all new farmers in the United States today have completed at least 12 years of school, and many young Americans ____________.3.The co-operative extension service informs farmers about________in agriculture.Ⅱ.1.It has been said that farming in America today is three fourths______ _____and one fourth______ ______.2.Today, the average age of the American farmer is ________.3.Extension agents test _______, give _______ and answer ________.4.American farmers also get information from the many _____ ______ in the United States.5.Farmers also join organizations where they and their families______ _______ ________.UNIT 22 RADIO PROGRAMS( Ⅱ ) Lesson 43 Part ⅠUNIT 22 RADIO PROGRAMS(Ⅱ)Lesson 43Part Ⅰ Warming-up ExercisesPlace NamesA.Country Capital CityLanguage1.______ Cairo Alexandria2.______ CaracasSpanish3.______ Tokyo4.______ Canberra Melbourne5.______ Brasilia RioPortuguese6.______ ManilaB.ColumnA Co lumn B1.______ a. the third biggest ocean on the earth2.______ b. the country with the largest area in the world3.______ c. the neighbouring country of Canada4.______ d. one of the trouble spots in the world today5.______ e. the country with Paris as its capital6.______ f. one of the Arab countries7.______ g. the arm of the Arabian Sea8.______ h. the country at the southern extreme of AfricaScore:_______Lesson 43 P art Ⅱ NewsLesson 43PartⅡ NewsExercises:Ⅰ.(News Item 1)1.WHO? ____________________________________________2.WHAT? ___________________________________________WHY? ____________________________________________Ⅱ.(News Item 2)News AnalysisMajor Points:Event: _________________________Time:________________________Place:________________________Further Information:About _____ men and ______ women from _______ countries will take part in the competition.Lesson 43 Pa rt Ⅲ ScienceReport ----Dyslexia( Ⅰ )Lesson 43PartⅢ Scien ce Report----Dyslexia(Ⅰ)Exercises:Ⅰ.1.What is the learning disorder called?2. Are there many children in the United States who suffer from some form of the learning disorder according to the doctors?3.Do experts consider the problem a disease?4. Are dyslexic persons mentally slow or disabled?5.Did doctors find any brain difference between dyslexic andnon-dyslexic persons?Ⅱ. 1.They say that persons with dislexia use information_____ _______ ______ ________.2.One of the world's_____ _____ ______ ______ Albert Einstein was dyslexic. He said that he never thought______ ______ the way that most of us do. He said that he thought______ ______instead.3.Research has shown that dyslexia is more common in ______ than in _____, and it is found more often in persons who are _______.Lesson 44 Part ⅠLesson 44Part Ⅰ Warming-up ExercisesNumbers and Time: Olympic Gold Medal Winners in 1976Event Competitor, Country Performance 100 meter (m) H.Crawford, Trinidad ＆ Tobago ______s.100 meter (w) A.Richter, West Germany _____s.200 meter (m) D.Quarrie, Jamaica _______s.200 meter (w) B.Eckert, East Germany ______s.400 meter (m) A.Juantorena, Cuba _______s.400 meter (w) I.Szewinska, Poland _______s.1,500 meter (m) J.Walker, New Zealand ___m. ___s. 1,500 meter (w) T. Kazankina, U.S.S.R. ___m. ____s. marathon (m) W. Cierpinski, East Germany __h. _m. __s.long jump (m) A. Robinson, U. S. _______m.long jump (w) A. Voigt, East Germany ______m.high jump (m) J. Wszola, Polandl ______m.high jump (w) R. Ackermann, East Germany ______m. discus (m) M. Wilkins, U.S. ______m. discus (w) E. Schlaak, East Germany ______m.Score:____ Lesson 44 Part Ⅱ NewsLesson 44Part Ⅱ NewsExercises:Ⅰ. (News Item 1)1. France and Poland will play for ______ place.2._______ has defeated______ in their semi-final match of the World Cup soccer competition.3. The score between West Germany and France was ____ to ______.4. The score between Italy and Poland was____ to ______.Ⅱ. (News Item 2)1. WHICH ? _________2. WHAT ? _________3. HOW MANY? _______4. HOW MANY? ________Lesson 44 Part Ⅲ ScienceReport ----Dyslexia ( Ⅱ )Lesson 44PartⅢ Scie nce Report----Dyslexia (Ⅱ)Exercises:Ⅰ. 1. Does anybody know the cause of dyslexia?2. Who was Doctor Samuel Orton ?3 . Who is Doctor Silvia Richardson?4. In what way should dyslexic children be taught according to Doctor Richardson?Ⅱ. 1. In 1949, a year after Doctor Orton's death, doctors, teachers and other experts formed the ______ _____ _______ to continue his work.2. Doctor Richardson says that after dyslexic persons solve their problems with language, they often show themselves to be especially____ _____ _____.3. She said they think differently and need _____ ____ ____teaching help.4.It is important to help these people___ ______ in every area possible.UNIT 23 RADIO PROGRAMS( Ⅲ ) Lesson 45 Part ⅠUNIT 23 RADIO PROGRAMS(Ⅲ)Lesson 45Part Ⅰ Warming-up ExercisesNumbers: Population in Ten CountriesScore:_____ Lesson 45 Part Ⅱ NewsLesson 45PartⅡ News Exercises:Ⅰ.(News Item 1)1.China's population has grown to _______persons.2.There has been a _______increase in the Chinese population since the last count was made in ___________.3. There are now only _______ babies born for every ______persons.4._____years ago about _____babies were born in China for every ______ persons.Ⅱ.(News Item 2)1.In Beijing, China says it will_____ _______ a ______ ___ _____ ______ loan to the International Monetary Fund______ _______earlier than planned.2.The Chinese News Agency said the government would______ ______ _____ _____ on Friday.3.Experts said that China is able to _________ ______ _________now because_____ ______ ________ _______.Lesson 45 Part Ⅲ ScienceReport ----Natural Environment( Ⅰ )Lesson 45PartⅢ Science Report----Natural Environment(Ⅰ)Exercises:1. The trees produce and send out _____into the air.2. Disease and insects______ the trees.3.Nearby trees take the same_____ _____ as the trees being attacked.4.The chemicals_______ the other trees of _______.Lesson 46 Part ⅠLesson 46Part Ⅰ Warming-up ExercisesPlace NamesColumnA Column BThailandBuenos AiresCanadaAddis AbabaAfghanistan Ban gkokArgentinaBonnDenmarkNew DelhiEthiopiaEast BerlinEast Germany CopenhagenWest Germany KabulGreeceTehranIndiaAthensIndonesiaOttawaIranBaghdadIraqJakartaScore：_______Lesson 46 Part Ⅱ NewsLesson 46PartⅡ NewsExercises:Ⅰ.(News Item 1)1.WHO？__________________________________________2.HOW BIG？______________________________________3.IN WHAT WAY？_________________________________4.WHAT？_________________________________________5.WHERE？________________________________________Ⅱ.(News Item 2)1. American and Japanese negotiators have agreed on a proposalfor______ ______in modern technology products.2.The proposed agreement calls for______ business competition in selling such goods as ______ and _____ _______.3.The Japanese and American governments must______ the proposal before it can take effect.4.The proposed agreement was reached _____ _______ ____ ______ ______ ________ _______.Lesson 46 Part Ⅲ ScienceReport ----Natural Environment( Ⅱ )Lesson 46PartⅢ Science Report----Natural Environment(Ⅱ)Exercises:Ⅰ.1.What problems are Asian countries facing according to the United Nations' report?_____________________________________________2.How many Asian countries are mentioned in this report? What are they?_____________________________________________3.What is the most serious threat to the area?_____________________________________________Ⅱ.1.The report said the reduction in woods areas has already led to increased _____, _____ ______in the dry seasons and_______ _______ ______ ______ _____.2.A top U.N. official said that as much as______％ of the woods in Asia will be gone in______ years unless ________ ______ _______ _______to save them.UNIT 24 RADIO PROGRAMS ( Ⅳ ) Lesson 47 Part ⅠUNIT 24 RADIO PROGRAMS (Ⅳ)Lesson 47Part Ⅰ Warming-up ExercisesSpot Dictation: Successful PredictionsIn 1865 the famous French author Jules Verne wrote two books. One was_______“From the Earth to the Moon” ____the other “Around the Moon.”In ____books he described man landing on____ moon.In 1969 man actually did ______ on the moon. Many of the________ of the real moon landing had ___ described with amazing accuracy in Jules_____ books.Here are three of the ______. First, Jules Verne's spaceship carried three _____. Apollo 11 carried three men. Second, _______ spaceship had a beginning speed of ____feet per second. Apollo's beginningspeed____35,533 feet per second. And last,______ spaceship took 97 hours, 13 minutes_______20 seconds to reach the moon. ____took 103 hours and 30 minutes._____door of Apollo 11 opened at _____p.m. on July 20, 1969 and ______ man stepped out onto the surface____ the moon. Jules Verne had predicted ___ with great accuracy over 104 years _____.Score:______Lesson 47 Part Ⅱ NewsLesson 47PartⅡ NewsExercises:Ⅰ.(News Item 1)1.American_____ ______ _____say the new space shuttle Challenger will be ready for_____ _____ _____in only sixty days.2. The Challenger landed______ in ______ after a successful ______ flight.3.Preparations for the next flight must be done quickly becauseof_____ ______ _______ before the shuttle's first flight.4._____ problems caused the delay of the space flight.Ⅱ.(News Item 2)1.WHAT? ___________________________________________2.WHEN? ___________________________________________3.HOW MANY? ____________________________________4.WHAT? ___________________________________________5.HOW LONG? ______________________________________6.WHAT? ___________________________________________Lesson47 Part Ⅲ AnOutstanding Character ----Benjamin Franklin( Ⅰ )Lesson 47Part Ⅲ An Outstanding Character----Benjamin Franklin(Ⅰ)Exercises:Ⅰ.R6sum6Ⅱ.1.What did most almanacs contain?________________________________________2.What special feature did Franklin's almanac have?________________________________________3.What are some of Franklin's famous sayings?________________________________________________________________________________Lesson48 Part ⅠLesson 48Part Ⅰ Warming-up ExercisesPlace NamesColumn A Column BPakistan Welli ngtonPortugal Hano iNew Zealand LusakaSweden Islamab adTurkey Be rnVietnam LisbonZaireKinshasaZambia Belgr adeSwitzerland TripoliRomania Ankar aYugoslavia StockholmLibyaBucharestScore:____ Lesson48 Part Ⅱ NewsLesson 48Part Ⅱ NewsExercises:1.Indira Gandhi has appealed for____ ____ ____ between the world's ____and ____nations.2.Mrs.Gandhi is ____of the non-aligned movement.3.Non-aligned nations have called for negotiations with industrial countries on ____,____,____and a new world____ ____.4.The industrialized countries taking part in the Williamsburg meeting are____ ____ ____,____,____,____,____ ____,____and Japan.Les son48 Part Ⅲ AnOutstanding Character ----Benjamin Franklin( Ⅱ ) Lesson 48Part Ⅲ An Outstanding Character----Benjamin Franklin(Ⅱ)Exercises:Ⅰ.R6sum6(comtinued)ExperienceIn Philadelphia……An original member of____Helped to establish____________Helped to build_____________A founder of_____________Major Interests_________________________________________Inventions_________________________________________Ⅱ.1.When did Benjamin Franklin die?2.For how long had he worked for his people?3.Why did some people say that Benjamin Franklin was the first American?UNIT 25 RADIO PROGRAMS(V) Lesson49 Part ⅠUNIT 25 RADIO PROGRAMS(V)Lesson 49Part Ⅰ Warming-up ExercisesSpot Dictation: Louis Braille(Ⅰ)Everyone has heard of the Braille____ of reading for the blind. But ____people know why it is called____“Braille”system or who Louis Braille ____.In the year 1812,Louis Braille ____a very small boy.He lived ____a small town in France. Louis' ____had a small shop in which _____ made things of leather. One day _____was playing in his father's shop _____picked up a small tool with _____very sharp point. Louis fell, the _____of the tool entered his eye, _____later he became blind in both _____.One day, on a visit home, _____said to his father, “Blind people _____the loneliest people in the world. _____can tell one bird from another _____its sound. I can know the _____of the house by feeling it _____my hand. But there are so _____things which I cannot hear and_____feel. Only books can free the _____.But there are no books for _____to read.”Score:____Lesson 49 Part Ⅱ NewsLesson 49PartⅡ NewsExercises:Ⅰ.(News Item 1)The United NationsThe General Assembly has decided_____ ____a Kampuchean opposition group____ ____Prince Norodom Sihanouk____ ____ ____ ____of Kampuchea. The General Assembly ____a proposal by the Soviet Union and Vietnam________Kampuchea's seat at the U.N. ____.Twenty-nine nations ____ ________the proposal,90 nations____ ____it, and 26 countries____ ____ ____.Ⅱ.(News Item 2)1.WHO? __________________________________2.WHAT?___________________________________________________________________3.WHY?________________________________Lesson49 Part Ⅲ AnOutstanding Character ----HelenKeller( Ⅰ )Lesson 49Part Ⅲ An Outstanding Character----Helen Keller(Ⅰ)Exercises:Ⅰ.1.When did Helen Keller become completely blind and deaf?2.What was her teacher's name?3.Had the teacher herself once been blind?4.What did the teacher do when Helen didn't obey?5.Where did Helen Keller's education begin?Ⅱ.If you close your eyes you know that you can ______again. If you cover your ears you know that you can____ ____again. But Helen Keller could not. For the rest of her life she was never able to ____or ____.She didn't even have memories of____ or ____.And the sickness struck when she was a baby before she____ ____ ____. Her world was totally ____and ____.Yet Helen Keller became ________,____and ____.She was inside the hearts of millions of people.Lesson50 Part ⅠLesson 50Part Ⅰ Warming-up ExercisesSpot Dictation: Louis Braille(Ⅱ)He studied different ways of making _____and dashes on paper. At last _____arrived at a simple system in _____he used six holes within a _____space. With these six holes in _____positions within this space he could _____sixty-three different combinations. Each combination indicated _____letter of the alphabet or a _____word. There were even combinations to _____punctuation marks. Soon Louis wrote a _____using the “Braille”system.At first _____did not believe that the system _____Louis Braille was possible or practical._____day a girl who had been _____since she was born played the _____beautifully before a large audience. Everyone _____the audience was very pleased. Then _____girl got up and said that _____people should not thank her for _____so well. They should thank Louis _____.It was LouisBraille, she said, _____has made it possible for her _____learn music and to play the _____.Some of Louis' friends went to _____home to see him. He was _____in bed. They told him what _____happened. Louis began to cry. He _____,“This is the third time in _____life that I have cried: First, _____I became blind. Second, when I _____about‘night writing,’ and now because _____know that my life has not _____a failure.” A few days later _____Braille died. He was only 43 _____old when he died.Score: _____Lesson 50 Part Ⅱ NewsLesson 50PartⅡ N ewsExercises:Ⅰ.(News Item 1)1.Israel____ ____its forces surrounding Palestinian guerrillas in Beirut, Lebanon.2.More Israeli tanks and armored vehicles________ ____the area.3.The cease-fire between the guerrillas and Israeli forces ____ ____.4. A bomb ____Tuesday in a car outside the Palestine Research Center in west Beirut.5.One person____ ____and at I east thirty others ____ ____.Ⅱ.(News Item 2)1.WHAT?__________________________2.WHY?___________________________3.HOW MANY? ____________________Lesson50 Part Ⅲ An Outstanding Character ----Helen Keller( Ⅱ )Lesson 50Part Ⅲ An Outstanding Character----Helen Keller(Ⅱ)Exercises:Ⅰ.1.What kind of teacher was Miss Ann Sullivan?2.Was Helen eager to learn? What were some of the things she learned to do? How did she learn all her life?3.Did she finish her studies at Redcliff College?4.What did Helen Keller think about her teacher Miss Ann Sullivan?Ⅱ.1.Through her lectures and her writing Helen Keller reached millions of people. Her life is____ ____,not just to____ ____and____ ____but to____ ____.2.“It was the genius of my teacher,____ ____, ____ ____which made my first years of education ____ ____.My teacher is so____ ________that I do not think of myself____ ____ ____ ____.All the best of me____________Everything I am today was awakened________ ____ ____ .”UNIT 26 TRAVELLING( Ⅰ ) Lesson51 Part ⅠUNIT 26 TRAVELLING(Ⅰ)Lesson 51Part Ⅰ Warming-up ExercisesNumbers and Time: Around the WorldMiles Hours and Minutesfrom Mexico City toRio ____in____ ____from Rio toSydney ____in____ ____from Sydney toShanghai ____in____ ____from Shanghai to Bombay ____in____ ____from Bombay to Baghdad ____in_____ ___from Baghdad to Istanbul ____in____ ____from Istanbul toBerlin ____in____ ____from Berlin to New York ____in____ ____from New York to Mexico City ____in____ ____Score:____ Lesson 51 Part Ⅱ TravelBooksLesson 51Part Ⅱ Travel Books Exercises:Ⅰ.The three ways to find out about the countries and places you wish to visit are:1.To talk ____________.2.To see _____________.3.To read ____________.Ⅱ.The three kinds of travel books are:1.Books that give a personal, ____account of travel.2.Books that give a purely ____description of things to be done and seen.3.Books that are called a ____to some place or other.Ⅲ.The three things to be noticed in choosing a travel book are:1.To make sure that it does not describe everything as ____,fabulous or ____.2.To note its ____of publication.3.To make sure that the contents are ____and ____to find.Lesson 51 Part Ⅲ Seeing TheTravel AgentLesson 51Part Ⅲ Seeing The Travel AgentExercises:Ⅰ.1.Why does the man come to see the travel agent?________________________________________2. Where would he like to go?________________________________________3.What kinds of tours does the agent offer?_________________________________________Ⅱ.1. What is included in a cruise?All ______________________________________A ship as your______________________________Visits to exciting _____________________________.2.What is included in a package tour?A first-class _________________________________.___________________________________________._____________________________________handing.___________________________________________Lesson52 Part ⅠLesson 52Part Ⅰ Warming-up ExercisesPhonetics: Homonyms1.a.bear b. bare2.a.be b. bee3.a.ledb. lead4.a.night b. knight5.a.made b. maid6.a.pair b. pear7.a.read b. red8.a.rode b. road9.a.seeb. Sea10.a.so b. sew11.a.Their b. There12.a.two b. too13.a.wait b. weight14.a.write b. rightScore:____Lesson52 Part Ⅱ At TheTravel AgencyLesson 52Part Ⅱ At The Travel AgencyExercises:NORTHWEST AIRLINESPASSENGER BOARDING INFORMATIONFLIGHT____GATE____AIRPORT____NUMBER IN PARTY OnePassengers presenting themselves for boarding at the airport loading gate less than 10 MINUTES before scheduled departure will not be accepted if boarding them will delay the flight.DATE DESTINATIONJan.3.1982 _____________ARRIVAL TIME PRICE____________ (with tax)CHECK-IN TIME_____________before take-offFRONT CABINLesson52 Part Ⅲ Announcements( Ⅰ )Lesson 52Part Ⅲ Announcements(Ⅰ)Exercises:Ⅰ.(Announcement 1)AnalysisWHO: to passengers from Flight 61WHAT: about baggage claimWHERE: to the baggage area at the front of the terminal WHEN: nowWHY: to claim their baggageHOW: by showing the claim checkⅡ.(Announcement 2)WHO:_________________________________WHAT:________________________________WHERE:_______________________________WHEN:________________________________Ⅲ.(Announcement 3)Attention. Passengers bound for____ ____on Flight ____,your flight will be ____in ____ ____.Inorder to____ ____ ____please have your________.Thank you.UNIT 27 TRAVELLING( Ⅱ ) Lesson 53 Part ⅠUNIT 27 TRAVELLING(Ⅱ)Lesson 53Part Ⅰ Warming-up ExercisesNumbers and Letters: AnnouncementsAirlines FlightNumber Gate Number1.Central Flight ____fromChicago Gate____2.Midwestern Flight ____forMilwaukee Gate____3.Central Flight ____forChicago Gate____4.Midwestern Flight ____fromMilwaukee Gate____5.Pan American Flight ____forMadrid Gate ___can6.British Flight____toNairobi Gate____Airways and Johannesburg7.Iran Air Flight ____to Parisand Gate____Tehran8.Mainland Flight ____to NewYork Gate____9.Anglan Flight ____to St.Francis Gate____10. Flight ____toAthens Gate____Score: ____Lesson53 Part Ⅱ Announcements( Ⅱ )Lesson 53Part Ⅱ Announcements(Ⅱ)Exercises:Ⅰ.(Announcements 1-5)1.__________________________2.__________________________3.__________________________4.__________________________5.__________________________Ⅱ.(Announcements 1-5)1.You are meeting your friend from Boston. Which gate should you go to?2.You are leaving for Atlanta on business. What is the boarding time?Ⅲ.(Announcement 6)____ ____regret to announce the ____in the departure of their flight number ____to Rome and Bombay. Due to ____reasons, this flight is now expected to depart at ____hours local time.Lesson53 Part Ⅲ InThe AirplaneLesson 53Part Ⅲ In The AirplaneExercises:Ⅰ.1.What is Steve's seat number?2.Who will show him where to sit and how to fasten his safety belt?3.How call Steve get further instructions?4.When can Steve unfasten his seat belt?5.What magazine does he want to read?Ⅱ.1.____This is Steve's first trip by air, so he is a little embarrassed.2.____He can't get the non-smoking section because he is a little late.3.____The stewardess is willing to help.4.____Steve's ears feel a little funny because of the air pressure.5.____He can't walk around during the flight.6.____He can see a movie after dinner.7.____Steve is a little bit hungry.8.____The stewardess brings him a coke to drink.Lesson54 Part ⅠLesson 54Part Ⅰ Warming-up ExercisesNumbers and Time: Announcements1.The train at Platform ____is the ____Epsom Service.2.The train at Platform ____is the ____stopping train to Brighton.3.The train standing at Platform ____is the ____for East Croydon, Clappen Junction, and Victoria.4.The____train for East Croydon, Hayward Heath, Louis, and New Haven will now leave from Platform ____.5.The train now arriving at Platform ____is the ____for Red Hill, East Croydon, and Victoria, Passengers should change at Red Hill for all stations to Gilford.6.Southern Region wish to announce that the following services have been cancelled----the ____to Epsom, the ____to Wands worth Town, and ____to Richmond.Score: ____Le sson54 Part Ⅱ Announcements( Ⅲ )Lesson 54Part Ⅱ Announcements(Ⅲ)Exercises:Ⅰ.(Announcements 1-5)1.______________________2.______________________3.______________________4.______________________5.______________________Ⅱ.(Announcements 1-5)1.You are expecting someone at a railway station. The trains are late. Why are they late?。
有机耕种和化学耕种英语作文
有机耕种和化学耕种英语作文英文回答：Organic vs. Chemical Farming: A Comparative Analysis.Introduction.Agriculture has undergone a significant transformation in recent decades, driven by advancements in technology and the increasing demand for food. Among the most notable changes has been the emergence of two distinct farming practices: organic farming and chemical farming. While both approaches share the ultimate goal of producing food for human consumption, they differ significantly in their methods and effects on the environment. This paper presents a comparative analysis of organic and chemical farming, exploring their respective principles, practices, and implications.Principles of Organic Farming.Organic farming is based on the principles of sustainability and environmental conservation. It emphasizes the use of natural and renewable resources, such as compost and manure, to maintain soil fertility and plant health. Organic farmers prioritize biodiversity and avoid the use of synthetic chemicals, such as pesticides and fertilizers. They also adhere to strict regulations regarding the treatment of animals and land management practices.Practices of Organic Farming.Organic farming incorporates a range of practices to promote soil health and crop production. These practices include:Crop Rotation: Alternating different crops on the same land to prevent soil depletion and pest infestations.Composting: Using organic matter to enhance soil fertility and provide essential nutrients for plants.Natural Pest Management: Employing biological controls, such as beneficial insects, to manage pests without relying on synthetic pesticides.Cover Cropping: Planting fast-growing plants during fallow periods to protect the soil from erosion and improve soil structure.Principles of Chemical Farming.Chemical farming, on the other hand, relies heavily on synthetic chemicals to control pests, increase crop yields, and enhance soil fertility. Chemical farmers use a range of products to promote growth and manage pests, including:Synthetic Fertilizers: Inorganic compounds thatprovide essential nutrients to plants but can lead to soil degradation and water pollution.Pesticides: Chemicals that kill pests but can alsoharm beneficial insects and wildlife.Herbicides: Chemicals that control weeds but can damage soil health and disrupt ecosystems.Practices of Chemical Farming.Chemical farming practices are typically geared towards maximizing crop yields and reducing production costs. These practices include:Monoculture: Growing a single crop on large plots of land, which can lead to soil erosion and pest outbreaks.High-Intensity Irrigation: Using large amounts of water to increase crop yields but can deplete water resources and cause soil salinization.Heavy Machinery: Employing large machines for farming operations, which can compact the soil and damage soil structure.Environmental Impact of Organic and Chemical Farming.The environmental impact of farming practices is a significant concern. Organic farming is generallyconsidered to be more environmentally sustainable than chemical farming. Organic practices promote soil health, biodiversity, and water conservation. Chemical farming, on the other hand, can lead to soil degradation, water pollution, and air pollution from the use of synthetic chemicals.Health Impact of Organic and Chemical Farming.There is ongoing debate about the health impacts of organic versus chemical farming. Some studies suggest that organic produce may contain higher levels of nutrients and antioxidants than chemically grown produce. However, other studies have not found significant differences innutritional content. There is also some concern about the potential health risks associated with pesticide residueson chemically grown food.Economic Considerations of Organic and Chemical Farming.Organic farming typically requires more labor and inputs than chemical farming, which can result in higher production costs. However, organic products often sell for a premium, which can offset the higher costs. Chemical farming, on the other hand, can be more cost-effective in the short term, but it may lead to long-term costs associated with soil degradation and environmental damage.Conclusion.Organic and chemical farming represent two distinct approaches to agricultural production. Organic farming emphasizes sustainability and environmental conservation, while chemical farming prioritizes productivity and efficiency. Both approaches have their advantages and disadvantages, and the choice between them depends on factors such as environmental concerns, health considerations, economic viability, and consumer preferences. A balanced approach that combines elements of both organic and chemical farming may offer the best solution for sustainable and productive agriculture in thefuture.中文回答：有机耕种与化学耕种，对比分析。
有机务农和化学务农的英语作文
有机务农和化学务农的英语作文英文回答：Organic farming and chemical farming are two distinct agricultural practices that differ in their approach to crop production and soil management. Organic farming emphasizes the use of natural inputs and techniques, while chemical farming relies on synthetic fertilizers, pesticides, and herbicides.Soil Management:Organic Farming: Organic farmers use natural methods like crop rotation, cover cropping, and composting to maintain soil fertility and structure. These practices enhance the soil's organic matter content, porosity, and water-holding capacity.Chemical Farming: Chemical farmers apply synthetic fertilizers and pesticides to boost crop yields and controlpests. However, these chemicals can accumulate in the soil, disrupt soil microorganisms, and degrade its overall health.Crop Production:Organic Farming: Organic crops are grown without the use of synthetic pesticides or herbicides. Instead, farmers rely on biological controls, crop rotation, and naturalpest repellants to protect their crops.Chemical Farming: Chemical farmers employ synthetic pesticides and herbicides to eliminate pests and weeds. These chemicals can be harmful to beneficial insects, wildlife, and human health.Environmental Impact:Organic Farming: Organic practices minimize environmental pollution by reducing the use of chemical inputs. Organic farming systems support biodiversity, promote water conservation, and reduce greenhouse gas emissions.Chemical Farming: Chemical farming can havesignificant environmental consequences. Syntheticfertilizers and pesticides can leach into water sources, pollute the air, and harm ecosystems.Health Considerations:Organic Farming: Organic produce is often perceived as healthier due to the absence of synthetic chemicals. It contains higher levels of antioxidants and nutrients.Chemical Farming: Residues of pesticides and herbicides can remain on conventionally grown produce, raising concerns about potential health risks.Economic Considerations:Organic Farming: Organic farming can be more labor-intensive and require higher production costs compared to chemical farming. However, organic produce often commands a premium price due to consumer demand for healthier andenvironmentally friendly products.Chemical Farming: Chemical farming relies on synthetic inputs, which can be costly. However, it generally yields higher crop yields, leading to higher profitability.Conclusion:Organic farming and chemical farming represent contrasting approaches to agricultural production. Organic farming prioritizes natural practices and minimizes environmental impact, while chemical farming emphasizes productivity and efficiency. The choice between these practices depends on various factors, including market demand, soil conditions, and economic considerations.----。
化学农业和传统农业的英语作文
化学农业和传统农业的英语作文English:Chemical agriculture and traditional agriculture both have their own advantages and disadvantages. Chemical agriculture, also known as modern agriculture, utilizes synthetic fertilizers, pesticides, and herbicides to maximize crop yield and control pests and diseases. It has significantly improved agricultural productivity and helped feed a growing global population. However, chemical agriculture has been widely criticized for its negative impact on the environment, leading to soil degradation, water pollution, and the decline of biodiversity. On the other hand, traditional agriculture relies on natural resources and traditional farming methods, such as crop rotation, intercropping, and organic fertilizers. It promotes sustainable farming practices and helps preserve natural ecosystems. However, traditional agriculture often faces challenges in meeting the demand of a growing population and can be less efficient in terms of crop yield.中文翻译:化学农业和传统农业都有各自的优缺点。
化学农业和传统农业的英语作文
化学农业和传统农业的英语作文英文回答：Chemical Agriculture vs. Traditional Agriculture.Chemical agriculture, also known as conventional agriculture, relies heavily on synthetic pesticides, herbicides, and fertilizers to increase crop yields and protect crops from pests and diseases. Traditional agriculture, on the other hand, employs natural and organic methods to cultivate crops, such as crop rotation, composting, and biological pest control.Advantages of Chemical Agriculture.Increased crop yields: Chemical pesticides andfertilizers can help farmers produce higher yields per acre, contributing to food security for a growing global population.Reduced labor costs: Synthetic pesticides and herbicides can reduce the need for manual weeding and pest control, saving farmers time and labor costs.Increased profit margins: Higher crop yields and reduced labor costs can lead to increased profit marginsfor farmers.Disadvantages of Chemical Agriculture.Environmental concerns: Chemical pesticides and fertilizers can harm beneficial insects, pollute water sources, and damage soil health.Health risks: Exposure to chemical pesticides has been linked to various health risks, including respiratory problems, neurological disorders, and cancer.Antimicrobial resistance: Overuse of chemical pesticides can lead to the development of antimicrobial resistance in pests, making it more difficult to control them in the future.Advantages of Traditional Agriculture.Environmental sustainability: Traditional agriculture practices promote biodiversity, protect soil health, and reduce water pollution.Health benefits: Organically grown produce is free from chemical residues, which may have health benefits for consumers.Nutrient-rich soil: Crop rotation and composting practices enhance soil fertility, leading to healthier and more resilient crops.Disadvantages of Traditional Agriculture.Lower crop yields: Traditional agriculture methods typically result in lower crop yields compared to chemical agriculture.Higher labor costs: Manual weeding and pest controlrequire more labor, which can increase production costs.Susceptibility to pests and diseases: Organic crops may be more vulnerable to pests and diseases than crops grown with chemical pesticides.Conclusion.Chemical agriculture and traditional agriculture have their own advantages and disadvantages. While chemical agriculture can increase crop yields and reduce labor costs, it raises concerns about environmental pollution and health risks. Traditional agriculture promotes sustainability, but it may limit crop yields and increase production costs. The choice between these two approaches depends on factors such as environmental priorities, consumer demand, and economic feasibility.中文回答：化学农业与传统农业。
化学农业和传统农业的英语作文
化学农业和传统农业的英语作文Chemical agriculture and traditional agriculture are two distinct approaches to farming. With chemical agriculture, farmers rely heavily on synthetic fertilizers and pesticides to boost crop yields and protect plants from pests. This method is efficient in terms of productivity, but it also has its downsides. For instance, the runoff of chemicals into waterways can harm aquatic life, and the accumulation of pesticides in the soil can pose risks to human health.On the other hand, traditional agriculture makes use of natural farming practices. It emphasizes crop rotation, the use of compost, and natural pest control methods. Whilethis approach may not yield as much as chemical agriculture in the short term, it's more sustainable in the long run.It preserves the fertility of the soil and reduces the impact on the environment.Personally, I believe a balance between the twoapproaches is ideal. Chemical agriculture has its advantages, like increasing food production to meet the demands of a growing population. But we also need to be mindful of its environmental impact. Traditional agriculture, on the other hand, teaches us to work with nature rather than against it. By incorporating some of its principles into modern farming, we can strive for a more sustainable and environmentally friendly way of producing food.In conclusion, both chemical and traditionalagriculture have their place in modern farming. It's up to us to find a balance that meets the needs of both humanity and the planet. After all, our food supply depends on the health of our soil, water, and ecosystems. Let's work together to.。
化学农业利与弊英语作文
化学农业利与弊英语作文Chemical Agriculture: Pros and ConsChemical agriculture refers to the use of chemical fertilizers, pesticides, and herbicides in farming to enhance crop yields and protect crops from pests and diseases. This method has been widely adopted across the globe due to its efficiency and the ability to feed a growing population. However, it also comes with a set of advantages and disadvantages that need to be carefully considered.Advantages of Chemical Agriculture:1. Increased Yield: Chemical fertilizers provide essential nutrients that are often lacking in the soil, leading to higher crop yields. This is crucial for meeting the food demands of an increasing population.2. Protection Against Pests: Pesticides help control pests that can decimate crops. Without these chemicals, farmers would face significant losses.3. Time Efficiency: Chemicals can be applied quickly and cover large areas, saving time and labor compared to traditional farming methods.4. Consistent Quality: The use of chemicals can lead to more uniform crops, which is important for the food industry andconsumer expectations.5. Economic Benefits: Chemical agriculture can be more cost-effective in the short term, as it can reduce labor costs and increase the amount of produce sold.Disadvantages of Chemical Agriculture:1. Environmental Impact: Chemicals can leach into the soil and waterways, causing pollution and potentially harming aquatic life.2. Health Risks: Residues from pesticides and fertilizers can remain on food, posing potential health risks to consumers.3. Soil Degradation: Overreliance on chemical fertilizers can lead to soil degradation, reducing its fertility andstructure over time.4. Loss of Biodiversity: The use of pesticides can kill beneficial insects and disrupt the natural balance of ecosystems.5. Cost Over Time: While initially cost-effective, the long-term costs of chemical agriculture can be high, including the cost of managing environmental damage and health issues.6. Dependence on Chemicals: Farmers may become overly reliant on chemical inputs, reducing their ability to adapt to changing conditions or to use more sustainable farming practices.In conclusion, while chemical agriculture has played a significant role in increasing food production, it is essential to balance its benefits with the potential long-term consequences. Sustainable agriculture practices that minimize the use of chemicals while maintaining high yields are becoming increasingly important as we strive to feed the world without compromising the health of our planet and its inhabitants.。
传统农业和化学农业英语作文100词
传统农业和化学农业英语作文100词Traditional Agriculture and Chemical AgricultureTraditional agriculture and chemical agriculture are two main types of agricultural practices that have been adopted by farmers around the world. Both have their own advantages and disadvantages, and play significant roles in global food production.Traditional agriculture relies on age-old techniques and practices that have been passed down from generation to generation. It involves the use of natural fertilizers such as manure and compost, and relies on crop rotation to maintain soil fertility. Traditional agriculture also emphasizes the importance of biodiversity, with farmers often growing a variety of crops on their land. While traditional agriculture may be seen as more sustainable and environmentally friendly compared to chemical agriculture, it often involves more manual labor and may result in lower crop yields.On the other hand, chemical agriculture relies on the use of synthetic fertilizers, pesticides, and herbicides to boost crop yields. While chemical agriculture has enabled farmers to increase productivity and feed a growing global population, ithas also raised concerns about the environmental and health impacts of these synthetic chemicals. Chemical agriculture has been linked to soil degradation, water contamination, and the loss of biodiversity.In recent years, there has been a growing interest in sustainable agriculture practices that combine the best of traditional and chemical agriculture. This includes practices such as organic farming, integrated pest management, and agroforestry. These practices aim to increase crop yields while minimizing the negative impacts on the environment and human health.In conclusion, both traditional agriculture and chemical agriculture play important roles in global food production. While traditional agriculture may be more sustainable and environmentally friendly, chemical agriculture has enabled farmers to increase productivity and feed a growing global population. Moving forward, it will be important to continue to develop sustainable agriculture practices that aim to balance the need for increased food production with concerns for the environment and human health.。
英语作文化学农业的优点
英语作文化学农业的优点In the modern era of agriculture, the integration of scientific and technological advancements has led to the emergence of agricultural practices that are not only more sustainable but also environmentally friendly. Among these practices, chemical agriculture stands out as a significant contributor to global food security and economic growth. The integration of chemistry in agriculture has enabled farmers to increase yields, reduce pests and diseases, and ensure the quality of produce. This article explores the benefits of chemical agriculture, highlighting its role in sustainable food production and the enhancement of agricultural output.**Increased Crop Yields**The application of chemical fertilizers and pesticides in agriculture has significantly increased crop yields. Chemical fertilizers provide essential nutrients to plants, enabling them to grow healthier and stronger. On the other hand, pesticides help control pests and diseases,protecting crops from damage and ensuring their survival. These chemical inputs, when used responsibly, can lead tosignificant increases in crop yields, thereby contributing to global food security.**Efficient Resource Utilization**Chemical agriculture allows farmers to utilize resources more efficiently. By providing plants with the exact nutrients they need, chemical fertilizers reduce the waste of fertilizers and water. Additionally, pesticides help farmers manage pests and diseases effectively, reducing the need for repeated applications and minimizing the use of other resources. This efficient utilization of resources not only reduces costs but also contributes to sustainable agriculture.**Improved Crop Quality**Chemical agriculture not only increases yields but also improves the quality of crops. The use of fertilizers and pesticides ensures that plants grow healthy and free from diseases, resulting in produce that is fresher, tastier, and more nutritious. This improved crop quality satisfies consumer demand for high-quality produce and enhances the reputation of farmers and agricultural produce.**Environmental Stewardship**Despite concerns about the environmental impact of chemical agriculture, responsible use of chemicals can actually contribute to environmental stewardship. Modern pesticides and fertilizers are formulated to be biodegradable and non-toxic to the environment. Additionally, farmers are encouraged to adopt integrated pest management practices that combine chemical and non-chemical methods to control pests and diseases. These practices ensure that the use of chemicals is minimized while still maintaining crop health and yields.**Conclusion**Chemical agriculture, when practiced responsibly,offers significant advantages in terms of increased yields, efficient resource utilization, improved crop quality, and environmental stewardship. It is an essential component of sustainable food production and contributes significantly to global food security and economic growth. By continuously innovating and adopting sustainable practices, the agricultural sector can ensure a secure and sustainable food supply for future generations.**化学农业的优点**在现代农业时代，科学与技术的融合推动了农业实践的发展，使其不仅更加可持续，而且更加环保。
化学农业和传统农业的英语作文
化学农业和传统农业的英语作文英文回答：Chemical agriculture and traditional agriculture aretwo different approaches to farming that have distinct characteristics and impacts on the environment and human health.Chemical agriculture, also known as industrial or modern agriculture, relies heavily on synthetic fertilizers, pesticides, and genetically modified organisms (GMOs) to maximize crop yields. This approach often involves large-scale monoculture, where a single crop is grown on a large area of land. Chemical agriculture aims to increase productivity and profitability by using technology and chemical inputs.One of the advantages of chemical agriculture is its ability to produce high yields in a relatively short period of time. Synthetic fertilizers provide plants withessential nutrients, allowing them to grow faster and produce more fruits or grains. Pesticides help control pests and diseases, reducing crop losses and ensuring a higher harvest. Moreover, GMOs have been developed to enhance crop resistance to pests, diseases, and environmental stresses.However, chemical agriculture also has several drawbacks. The excessive use of synthetic fertilizers and pesticides can lead to water and soil pollution. Runoff from fields can contaminate nearby water bodies, affecting aquatic ecosystems and human health. Moreover, the continuous use of chemical inputs can deplete soilfertility and biodiversity, making the land less productive in the long run. Additionally, there are concerns about the potential health risks associated with the consumption of GMOs.On the other hand, traditional agriculture, also known as organic or sustainable agriculture, is a more holistic and environmentally friendly approach. It focuses on maintaining soil health, biodiversity, and naturalprocesses. Traditional farmers rely on organic fertilizers, such as compost and manure, and natural pest control methods, such as crop rotation and biological control, to grow crops.One of the advantages of traditional agriculture is its emphasis on sustainability and long-term productivity. By using organic fertilizers and natural pest control methods, traditional farmers can maintain soil fertility and biodiversity, ensuring the health of the ecosystem. Moreover, traditional agriculture promotes the use of locally adapted crop varieties, preserving geneticdiversity and reducing the dependence on external inputs.However, traditional agriculture also has its limitations. It usually requires more labor and time compared to chemical agriculture, as organic fertilizers and natural pest control methods may not be as efficient as synthetic inputs. This can result in lower yields and higher production costs. Additionally, traditional agriculture may be more vulnerable to pests and diseases, as the absence of synthetic pesticides makes crops moresusceptible to attacks.中文回答：化学农业和传统农业是两种不同的农业方法，对环境和人类健康有着不同的特点和影响。
传统农业和化学农业英语作文100词
传统农业和化学农业英语作文100词In the annals of agricultural history, two primary approaches stand out: traditional agriculture, rooted in centuries-old practices, and chemical agriculture, a product of modern scientific advancements. Traditional agriculture relies heavily on natural methods, such as crop rotation and organic fertilizers, to maintain soilfertility and increase yields. This approach is oftenlabor-intensive, sustainable, and environmentally friendly, but its productivity can be limited by various factors, including climate and soil conditions.On the other hand, chemical agriculture employs synthetic fertilizers, pesticides, and herbicides to enhance crop growth and yield. This approach has revolutionized food production, allowing for unprecedented yields and meeting the demands of a rapidly growing global population. However, it has also been criticized for its negative environmental impacts, including soil degradation, water pollution, and biodiversity loss.The debate between traditional and chemical agriculture is complex and multifaceted. While traditional methodsoffer sustainability and environmental protection, they may not be able to meet the demands of a modern, industrialized world. Chemical agriculture, while efficient and productive, must be carefully managed to minimize its negative impacts on the environment.The future of agriculture lies in a harmonious blend of the two approaches. By integrating sustainable practicesinto chemical agriculture, we can ensure higher yields without compromising the environment. Technologies like precision farming and smart agriculture can help us achieve this balance, allowing us to feed the world whileprotecting our planet.**农业演变：传统农业与化学农业**在农业历史的长河中，两种主要的农业方法脱颖而出：一种是深深植根于数百年传统的传统农业，另一种则是现代科学进步产物的化学农业。
关于化肥农药和有机农药区别的英语作文
关于化肥农药和有机农药区别的英语作文The Difference Between Chemical Fertilizers and Pesticides and Organic PesticidesChemical fertilizers and pesticides have been widely used in modern agriculture to increase crop yields and protect plants from pests and diseases. However, there is a growing concern about the negative impact of these chemicals on the environment and human health. In recent years, there has been a rising trend towards the use of organic fertilizers and pesticides as an alternative to chemical ones. So, what are the differences between chemical fertilizers and pesticides and organic fertilizers and pest icides? Let’s take a closer look at these two types of agricultural inputs.Chemical fertilizers are synthetic substances that are added to the soil to provide essential nutrients for plant growth. They are typically made from industrial by-products or mined minerals, such as nitrogen, phosphorus, and potassium. These fertilizers are highly concentrated and easily absorbed by plants, which can promote rapid growth and increase crop yields. However,over-reliance on chemical fertilizers can lead to nutrient imbalance in the soil, soil acidification, and nutrient runoff into water bodies, causing environmental pollution and ecosystemdamage. In addition, chemical fertilizers may leave residues in the soil and crops, which can pose risks to human health.On the other hand, organic fertilizers are made from natural sources, such as compost, manure, and plant residues. They contain a variety of nutrients, including nitrogen, phosphorus, and potassium, as well as micronutrients and beneficial microorganisms that can improve soil fertility and plant health. Organic fertilizers release nutrients slowly and steadily, providing a long-lasting source of nutrition for plants. They also improve soil structure, water retention, and aeration, which can enhance soil health and resilience to drought and pests. Organic fertilizers are considered more sustainable and environmentally friendly than chemical fertilizers because they do not contain synthetic chemicals or toxic residues that can harm the environment and human health.Similarly, chemical pesticides are synthetic substances that are used to control pests, weeds, and diseases in crops. They are often applied in large quantities to protect plants from insect damage, diseases, and competition from weeds. Chemical pesticides are highly effective in killing pests and controlling crop diseases, but they can also harm beneficial insects, birds, and other wildlife, as well as contaminate soil, water, and air.Residues of chemical pesticides can accumulate in the environment and food chain, posing risks to human health, such as cancer, endocrine disruption, and reproductive disorders.In contrast, organic pesticides are derived from natural sources, such as plant extracts, oils, and minerals, and are considered safe and non-toxic to humans, animals, and the environment. Organic pesticides work by disrupting the behavior, physiology, or reproductive cycle of pests, rather than killing them outright. They are less persistent in the environment and degrade more quickly than chemical pesticides, reducing the risk of environmental contamination and exposure to toxic residues. Organic pesticides are also less likely to induce resistance in pests, as they tend to have multiple modes of action and target a broader range of pests, making them more sustainable and effective in the long term.Overall, the main differences between chemical fertilizers and pesticides and organic fertilizers and pesticides lie in their composition, mode of action, environmental impact, and safety. Chemical fertilizers and pesticides are synthetic, concentrated, fast-acting, and potentially harmful to the environment and human health, while organic fertilizers and pesticides are natural, slow-release, targeted, and safer for the environment and humanhealth. The choice between chemical and organic inputs ultimately depends on the specific needs and goals of farmers, as well as the ecological and social context in which they operate. In the face of global challenges such as climate change, soil degradation, and food insecurity, promoting sustainable agriculture practices, such as organic farming, is essential for ensuring the long-term health and resilience of agroecosystems and human societies.。
化学农业的好处和坏处英语作文
化学农业的好处和坏处英语作文Title: The Pros and Cons of Chemical AgricultureThe advent of chemical agriculture has profoundly transformed the way we produce food and sustain our growing global population. On one hand, this approach has yielded significant benefits, increasing crop yields and ensuring a more reliable food supply. However, the reliance on synthetic fertilizers, pesticides, and other chemical inputs has also given rise to a host of environmental and health concerns. In this essay, we will explore the pros and cons of chemical agriculture, considering its impact on productivity, sustainability, and the overall well-being of our planet and its inhabitants.One of the primary advantages of chemical agriculture is its ability to boost crop yields. The use of synthetic fertilizers, such as nitrogen, phosphorus, and potassium, hasenabled farmers to maximize the nutrient content of the soil, leading to higher-yielding harvests. This has beenparticularly crucial in meeting the demands of a rapidly expanding global population, where food security has become a pressing issue. By increasing the efficiency of agricultural production, chemical methods have helped to alleviate hunger and malnutrition in many parts of the world.Furthermore, the application of pesticides has played a significant role in protecting crops from pests and diseases, which can significantly reduce yields. These chemical agents have effectively eliminated or controlled a wide range of insect infestations, fungal diseases, and weed overgrowth, allowing farmers to maintain healthy and productive crops. This has resulted in a more reliable and consistent food supply, reducing the risk of crop failures and ensuring a more stable food market.However, the reliance on chemical inputs in agriculture has also led to a range of environmental and health concerns. The overuse and improper disposal of synthetic fertilizers and pesticides have contributed to the pollution of soil, water, and air. Excessive nutrient runoff from fertilizers has led to the eutrophication of waterways, causing algal blooms and the depletion of oxygen in aquatic ecosystems. This, in turn, can have devastating effects on aquatic life and disrupt the delicate balance of these environments.Moreover, the widespread use of pesticides has beenlinked to the decline of pollinator populations, such as bees and butterflies, which are critical for the pollination of many crops and the maintenance of healthy ecosystems. The negative impact on pollinators can have far-reaching consequences for the overall health of agricultural systems and the broader natural environment.In addition to environmental concerns, the use of chemical inputs in agriculture has also raised health-related issues. Some pesticides have been found to have carcinogenic properties and have been associated with an increased risk of certain types of cancer. Furthermore, the presence of pesticide residues in food products can pose a threat to human health, particularly for vulnerable populations such as children and pregnant women.The long-term sustainability of chemical agriculture is also a matter of concern. The extensive reliance on synthetic fertilizers and pesticides can lead to the depletion of soil fertility, as the continuous application of these chemicals can disrupt the natural balance of nutrients and microorganisms in the soil. This can result in a decline in soil health, making it more difficult to maintain productive and resilient agricultural systems.Moreover, the production and transportation of chemical inputs in agriculture require significant amounts of energy, often derived from non-renewable fossil fuels. This contributes to the overall carbon footprint of the agricultural sector and exacerbates the challenges of addressing climate change.In conclusion, the pros and cons of chemical agriculture present a complex and multifaceted issue. While the increased productivity and food security achieved through the use of synthetic inputs have been undeniably beneficial, the environmental and health-related consequences of this approach cannot be ignored. As we strive to meet the growing demand for food, it is crucial that we explore more sustainable and ecologically-sound alternatives that can balance the need for increased agricultural yields with the preservation of our natural resources and the well-being of our planet and its inhabitants. This will require a holistic approach, combining scientific innovation, policy reforms,and a shift in societal attitudes towards more responsible and sustainable agricultural practices.。
化学农业和有机农业的优缺点英语作文
化学农业和有机农业的优缺点英语作文Chemical Agriculture vs. Organic Agriculture: Pros and ConsChemical agriculture has been the dominant farming practice for several decades. It involves the use of synthetic fertilizers, pesticides, and herbicides to maximize crop yield. On the other hand, organic agriculture promotes the use of natural and environmentally friendly methods. Below are the pros and cons of both chemical and organic agriculture.Chemical Agriculture: Pros1. Higher crop yield: Chemical agriculture often results in higher crop yields, ensuring food security for a growing population.2. Reduced labor costs: The use of synthetic inputs simplifies farming practices, reducing the need for manual labor.3. Disease and pest control: Chemical fertilizers and pesticides help control diseases and pests, protecting crops from damage.Chemical Agriculture: Cons1. Environmental pollution: The excessive use of synthetic fertilizers and pesticides can lead to water and soil pollution.2. Health risks: Prolonged exposure to chemical inputs may pose health risks to farmers and consumers.3. Loss of biodiversity: Chemical agriculture can harm beneficial insects, soil microorganisms, and plants, leading to a loss of biodiversity.Organic Agriculture: Pros1. Environmental friendly: Organic agriculture avoids the use of synthetic inputs, reducing pollution and promoting soil health.2. Enhanced biodiversity: Organic farming methods support a diverse range of plant and animal species, improving ecosystem balance.3. Health benefits: Organic produce is generally free from chemical residues, making it a healthier choice for consumers.Organic Agriculture: Cons1. Lower crop yield: Organic agriculture often results in lower crop yields, which may not be sufficient to meet the demands of a growing population.2. Higher costs: Organic farming requires more labor-intensive practices, leading to higher production costs.3. Limited pest and disease control: Organic farmers face challenges in controlling pests and diseases without the use of synthetic chemicals.In conclusion, both chemical and organic agriculture have their advantages and disadvantages. The choice between the two depends on various factors, including environmental concerns, health considerations, and economic viability. Striking a balance between the two approaches is crucial for sustainable farming practices.。
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AGRICULTURE REPORT – July 30, 2002: Chemicals on Organic Food
By George Grow
This is the VOA Special English AGRICULTURE REPORT. Farmers who grow organic food do not use chemicals to increase their crops or control insects and disease. However, a new study shows that chemicals can still be found on organically grown food. The study showed that organic crops had far fewer chemicals than other fruits and vegetables. The publication Food Additives and Contaminants reported the findings.
Organic food is one of the fastest growing areas in American agriculture. Industry officials
estimate that American stores sold almost eight-thousand-million dollars worth of such
food in the year two-thousand. That is a twenty-percent increase in sales from the year
before.
Many Americans believe that eating organic food is more healthful than eating food grown
with chemicals. Some people are willing to pay more for such food. Yet several reports
claim that some organic foods have just as many chemicals as other crops.
Scientists with the American group Consumers Union supervised the new study. Consumers Union publishes Consumer Reports magazine.
The scientists collected and examined information from three earlier reports on chemicals in the American food supply. Consumers Union, the United States Department of Agriculture and the state of California prepared the earlier reports. The combined reports studied more than twenty different crops and more than ninety-four-thousand fruits and vegetables.
The scientists found that chemical pesticides to kill insects were present on almost twenty-five percent of the organic fruits and vegetables. The chemicals also were found on almost seventy-five percent of other crops. Two of the reports included foods that were not organically grown. They were grown with reduced use of chemicals. Foods in this group had chemical levels between those for organic and traditional crops.
The scientists also examined why organic foods contain any chemicals at all. They found that most of the
chemicals in organic foods were unavoidable results of earlier chemical use in the environment. They say other chemicals may have been blown onto the organic fields from nearby farms. They also say some of the food tested may have been sold as organic although it was not organically grown.
This VOA Special English AGRICULTURE REPORT was written by George Grow.
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