水稻水育改旱育秧后，草害严重。为了及时研制出适合澄江地区的旱育苗床化学除草技术，我们自1997年以来，紧密结合生产实际，在基本摸清草情的基础上，试验、示范筛选出优良除草剂龙杀、丁西合剂及其简便施用技术。其技术要点是，先将旱育秧苗床浇透水，然后于播种盖土后，覆 Rice aquatic nursery drought, grass damage serious. In order to promptly develop chemical weeding technology suitable for dryland seedbed in Chengjiang area, we, since 1997, closely combined with the actual production, on the basis of basically making clear the grass, tested and demonstrated the excellent herbicides dragon kill, dixi mixture And its easy to use technology. The technical point is that the first nursery seedling bed is drenched with water, and then covered with seeding, covering