麻苗是苧麻高产的基础。苧麻苗床土壤肥沃、湿润,育苗时间长,十分有利于杂草的生长。我县苧麻苗床的杂草主要有:马唐、早稗、狗尾草、千金子、鳢肠、小旋花等,一般每平方尺有草13～25株,其中马唐等禾本科杂草占90％以上。苗床杂草一般于播后一星期开始发生,播后半个月左右进入出草高峰,杂草滋生,与麻苗争水、争肥、争光。人工拔除,不仅费时花工,而且易损伤麻苗根系,影响麻苗素质。为此,我们于1987年进行了稳杀得等药剂防除苗床禾本科杂草的试验,现小结如下: Ma Miao is ramie high yield basis. Ramie seedbed fertile soil, moist, seedling for a long time, very conducive to the growth of weeds. Our county ramets bed weeds mainly include: Crabgrass, as early as barnyard grass, Setaria, Qianjinzi, small intestine, etc., generally per square foot grass has 13 to 25 strains, of which crabgrass and other weeds accounted for 90 %the above. Seedbed weeds generally occur a week after sowing, about half a month after sowing into the grassroots, weeds breed, and Ma Miao dispute the water, fight fat, win glory. Artificial removal, not only time-consuming workers, but also easy to damage the root of hemp seedlings, affecting the quality of hemp seedlings. To this end, we carried out in 1987, such as stability and stability of seedbed weeds control experiments, are summarized as follows: