丁草胺是一种优良的选择性芽前除草剂,对防除水田稗草、三棱草、水苋、鸭舌草等多种杂草具有良好防除效果。1986和1987年我场使用此药面积达1万余亩,由于使用方法不当,经常发生药害。1988年开始我们将喷雾改为撒毒土,既避免了药害,又提高了除草效果。方法是:亩用60%丁草胺乳油 Butachlor is an excellent selective pre-emergence herbicide, which has good control effects on various weeds such as barnyardgrass, rhizome, amaranth, monocotyledon and so on. In 1986 and 1987, I used this medicine in an area of ​​more than 10,000 mu. Because of improper use, phytotoxicity often occurred. In 1988, we changed the spray to spread soil, which not only avoided phytotoxicity but also enhanced herbicidal effect. The method is: mu 60% butachlor EC