南通地区滨江临海,是我国主要商品棉基地,棉花生长前期雨水充沛,温度较高,棉田多种杂草萌发滋生,严重影响棉花生长发育。过去对草害的防除是以农业措施和人工防除为主,随着农村产业结构的变化,直接从事农业生产的劳力大为减少,而棉田除草每年均需3～5次,因而目前农村对化除技术越来越迫切。为筛选适于棉田使用的除草剂及开展草害防 Riverside Linhai Nantong area, is China’s main commodity cotton base, cotton growing early rainfall, high temperature, a variety of cotton weeds germination, seriously affecting the growth and development of cotton. In the past, the prevention and control of grass and pests were dominated by agricultural measures and artificial prevention. As the industrial structure in rural areas changed, the labor force directly engaged in agricultural production was greatly reduced, while weeding in cotton fields required 3 to 5 times a year. Therefore, In addition to technology more and more urgent. In order to screen for the use of herbicides in cotton fields and to carry out the prevention and control of grass