胺苯磺隆是一种广谱、高效、低毒的油菜田除草剂。由于其杀草谱广、效果好、价格低廉，近年在油菜田中的应用面积逐年增加。但由于农民在使用过程中难以准确掌握用量，加上连年应用，引起土壤中胺苯磺隆残留物的累积，当累积达到一定浓度时，其“后效应”显著，即不仅对秧苗造成 Benzysulfuron is a broad spectrum, high efficiency, low toxicity rape field herbicide. Due to its broad spectrum to kill grass, the effect is good, the price is low, and the area of ​​application in rape field has been increasing year by year. However, it is difficult for peasants to accurately grasp the amount of peanut during their use. In addition, perennial application causes the accumulation of the residues of triasulfuron in the soil. When the accumulated concentration reaches a certain level, the “post-effect” is significant, which is not only caused by the seedling