搞好早稻秧田的化学除草是提高秧苗素质的重要措施之一。秧田化学除草一般采用二次除草法,即翻耕前3~7天用除草剂灭除老草,然后再根据不同育秧方式及秧田草情,选择合适的除草剂及时除草。旱育秧。旱育秧田杂草主要有稗草、马唐、牛筋草、异型莎草等等。可以在苗床浇足水后落谷、盖土,每亩用50%丁草胺乳油125毫升、36%丁·噁乳油130~150毫升,或26%莎稗磷·乙氧 Improving chemical weed control in early rice seedling is one of the important measures to improve the quality of seedlings. Chemical weeding herbicides generally use the second weeding method, that is, 3 to 7 days before tillage with herbicides to eliminate the old grass, and then according to different ways of raising seedlings and seedling grass, select the appropriate herbicides in time weeding. Dry nursery seedlings. Dry weed seedling weed mainly barnyard grass, crabgrass, tendon grass, shaped sedge and so on. Can be poured in the seedbed full of water after the valley, cover soil, with 50% per mu with butachlor EC 125 milliliters, 36% Dingxie EC 130 ~ 150 ml, or 26%