随着我国农业现代化的发展和农业劳动力的逐步转移,栽培耕作方式趋向于规模化和集约化,简化栽培技术成为育种者和推广部门研究的重点,化学手段成为此重点的核心技术,如化控技术、除草剂使用等,除草剂选择和正确使用成为举足轻重的作用。玉米田化学除草已经成为确保玉米安全生产的重要技术环节,但由于天气因素或者选用药不当或使用技术不到位,防治效果不理想或造成药害等现象屡屡发生,造成玉米减产甚至绝收,导致相邻的其他作物受害。夏播玉米苗期正值高温、多雨季节,玉米田杂草发生普遍,种类繁多。根据全国杂草普查结果,全国玉米田杂草有22个科、38个 With the development of agricultural modernization in our country and the gradual transfer of agricultural labor force, cultivation and cultivation methods tend to be large-scale and intensive. Simplification of cultivation techniques has become the focus of breeders and extension departments, and chemical methods have become the core technologies of this emphasis. For example, Technology, Herbicide Use, Herbicide Selection and Proper Use Become Important. Corn field chemical weeding has become an important technical link to ensure the safe production of maize. However, due to improper use of the weather or improper drug selection or the use of technologies, the prevention and control of pesticide damage often occur, resulting in the decrease of maize yield and even the yield of maize. Other crops in the neighborhood have been affected. Summer sowing corn seedling at a time when the hot, rainy season, corn weeds occur generally, a wide range. According to the results of the national weed survey, there are 22 families and 38 weeds in the national corn field