tillage

1.inauguration of scientific systems of tillage

开创科学化的系统

2.Baesd on analysis of mouldboard plow tillage,power driven disk tillage and rotary tillage and rotary tillage, an oblique rotary tillage theory has been put forward.

本文在综合犁旋之优点基础上，提出一新的耘方式———斜置旋。

3.A control program might involve early preplant tillage to encourage germination of the weed seeds, followed by shallow tillage prior to planting to kill the emerged weeds.

这样，在地想办法促使杂草萌发，随后在浅将其杀灭。

4.The paddy soil probably had a long history of tillage, and furthermore it had formed gley horizon and illuvium, but its fertility was not high either.

水稻土有较长历史，并已形成了潜育层潴育层，但土壤肥力并不高。