What is sustainable agriculture and how to practice the sustainable agriculture?

Answer 1

The principle of sustainable farming are:

1)People have enough food

2)the farming activities will not affect the quality of our environment in the long run

How do we develop sustainable farming?

1)Avoid overuse of chemicals

In fact we can use chili and spring onion to replace pesticides.Also we can plant beans and peas to give nutrients to land,use organic fertilizers,such as death plants,mennure of livestocks instead of chemical fertilizers.

2)Better use of farmland

-Crop rotation

Different crop uses different nutrients from the land.By growing different crops each year,the nutrients in soil will not be used up.This is called crop rotation.

-Fallowing

When the farming conditions are not very good,farmers can leave the field to rest for a period of time so that the soil' nutrients can be recovered.This is called fallowing.

-Mixed farming

Rearing livestock and growing crops in the same land can help increasing nutrients in soil cause livestock can release menure and provides nutrients.

3)suitable irrigation

we can use suitable amount of water for irrigation so that we won't waste water,aslo to avoid soil from becoming salty.

4)Avoid developing marginal land

Many farmers grow crops on marginal land but it only gives out small production but destroy the ecosystem seriously.