tillage

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.

水稻土有较作历史，并已形成了潜育层和潴育层，但土壤肥力并不高。

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，在地前办法促使杂草萌发，随后在播种前其杀灭。