现代农业PPT课件

Traditional farming
Modern farming
Hi-tech farming
2020年10月2日
10
、What are the advantages and disadvantages of each way ?
Raising chickens
Small scale
Large scale
Unit19
Modern Agriculture
2020年10月2日
1
irrigation farming
fertilizer plain
farm
prairie
fwenku.baidu.comrmer
agriculture
field
seed
crop plants
2020年10月2日
food
land
arable
land
countryside
If chickens get ill,many die or must be killed.
The chickens are not so fat.
The chickens are big and fat.
The eggs and meat taste very good. The meat and eggs do not taste so
grain
2
Discuss the following questions with you partner.
1、Look at the pictures and compare traditional and modern farming. 2、What are the advantages and disadvantages of each way ? 3、What other changes have happened on farms in the last 100 years?
2020年10月2日
Greenhouse
Weather conditions are controlled,so they cannot damage crops.
It is expensive to build and operate (gas,water,electricity) a greenhouse.
2020年10月2日
3
2020年10月2日
4
2020年10月2日
6
Agriculture
Traditional farming--Modern farming --Hi-tech farming ---
2020年10月2日
9
Advantages Disadvantages
agriculture
wet ground. The need to rest sometimes.
The fuel is expensive(gasoline). They pollute the air. They can only be used on flat (level) and dry terrain. They don’t need to rest. You can use them for 5-20 or more years if you can get
chickens.
chickens.
It is not a lot of work to keep the It’s a lot of work to keep the
chickens.
chickens:feeding,cleaning etc.
The chickens don’t have many problems.
You can use them for about 1020 years.
enough spare (repair) parts.
If they get young ones,you get more for free.
If they totally break down,you
can e20a20t年t1h0月em2日.
They are not so expensive.
They are expensive.
The “fuel” is cheap(grass,hay etc). They don’t pollute the air. They can be used on different land;eg hill slopes or
The ch20i2c0年ke10n月s2日are free.
good.
11
Fertilisers
Natural fertiliser(manure;also dung)
Chemical fertiliser
It’s free or can be bought at low It’s expensive.
prices.
It is not a lot of work to mix it
It’s a lot of work to mix it with the with the soil.
soil.
It has no smell.
It has a bad smell.
It takes little place to store.
It takes a lot of place to store.
It is easy to transport.
It is difficult to transport.
2020年10月2日
12
Horsepower
Animals(buffalo;also ox)
Machines(Tractor)
13
Climate control
Open air
If the weather conditions are bad you can loose the crops. The landscape is more beautiful. The land must be good for farming (arable land).
The farmer can keep only a few chickens.
The farmer can keep thousands of chickens.
It does not cost a lot to keep the It costs a lot of money to keep the