在农业合作化的高潮中,扫除田间杂草的问题,逐渐为人们所重视。因为杂草有损于作物,是病虫害的温床,消除杂草也就保护了作物,为增产创造了条件。人力除草要耗费大量劳力及时间,有时还有其他的困难,因此就目前情况论,利用化学药剂来扫除杂草而不妨碍作物的生长是比较经济的方法。用化学药剂除草虽然很早已为人类应用,但直到最近一些性能优越的合成药剂出现以后,才迅速的发展起 In the climax of agricultural cooperation, the problem of wiping out weeds in the field has gradually gained people’s attention. Because weeds detrimental to the crop, is a hotbed of pests and diseases, the weeds will also protect the crop, creating conditions for increased production. As manpower for weeding requires a lot of manpower and time, and sometimes other difficulties, it is an economical way to eliminate weeds without interfering with the growth of crops. Although the use of chemical weeding has long been a human application, it has not been developed rapidly until some of the more promising synthetic drugs appeared recently