近日,笔者对农药市场和农户进行调查发现,玉米田苗后除草剂的用量呈逐年上升的趋势。以前农民在给玉米除草时,大多数选用的是玉米封闭除草剂,而使用这种除草剂时,常会受到各方面条件的影响,导致使用效果不理 Recently, the author of the pesticide market and farmers survey found that the amount of post-emergence herbicide in corn field showed an upward trend year by year. When peasants used to weed corn, most of them used maize enclosed herbicides. When using such herbicides, they were often affected by various conditions and the results were ignored