由于抛秧稻田立苗期长,秧苗在田间随机分布,改变了稻田杂草原有生境,使抛秧稻田出草期长,发生严重。同时,抛秧秧苗易倒伏,根外露,对除草剂的安全性有较高的要求,使用不当极易造成药害。为进一步了解抛秧田杂草发生情况和筛选一次性除草剂,在去年试验的基础上进行了本试验?.. Due to throwing rice seedlings long seedling stage, random distribution of seedlings in the field, changing the habitat of weeds in paddy fields, the throwing rice paddies long grassroots, serious. At the same time, throwing seedlings easily lodging, root exposure, the safety of herbicides have higher requirements, improper use can easily lead to injury. In order to further understand the situation of weed throwing seedling and screening of one-time herbicides, the test was conducted on the basis of last year’s test.