论文部分内容阅读
由于6-7月降雨数量偏多,致使乙阿合剂等封闭型除草剂除草效果不理想,且田间出现了一些抗性杂草,部分农民开始使用玉米田苗后除草剂来代替播后苗前的封闭型除草剂。
Due to the heavy rainfall in June-July, the weed control effect of the closed herbicide such as B and A was not satisfactory, and some resistant weeds appeared in the field. Some farmers started to use the post-emergence herbicide instead of the pre- Closed herbicide.