tillage

1.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.

水稻土有较耕作历史，并已形成了潜育层和潴育层，但土壤肥力并不高。

2.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，在耕地前想办法促萌发，随后在播种前浅耕将其杀灭。