The cultivation of two crops in one year has made great contributio ns for relieving the food pressure on China caused by larger population and less f armland.

With the development of animal husbandry,the need amounts to feed has enlarged,farmers has put up silage maize two stubbles cultivation technique in producing practice.

A new design of the divided no-till wheat planter has been accomplished by China agricultural University aimed to solve the extremely important problem of the double cropping area in North China, where the planter can easily be walled up by standing maize stubble when sowing the winter wheat.

2BMD-12 Row-controlled No-till Wheat Drill has been developed to plant wheat between rows of standing maize residue under double cropping condition.

A new-concept of no-till wheat planter, named 2BMD-12 no-till row-follow wheat planter, had been developed by China Agricultural University to solve an extremely important problem which is zero tillage planting of wheat in narrow row spacing (150-200mm) between rows of very high-levels full length, standing maize stubble in one pass in the double cropping situation of North China.

Conservation tillage for corn-wheat two crops a year region;

Conservation tillage has been used and spreaded in regions of two crops a year in recent years.

The conventional tillage pattern of two crops a year in North China Plain has played a very important role.

A trial on the bi-annual planting of peanut as fresh food was carried out with a rareripe peanut variety-Tezao No.

The study on inter-multiple planting for double cropping in Tibet