由于常用农药的连续使用,害虫产生了抗药性,往往是花钱多,效果差.人民群众有无限的创造力,我省偃师县山化公社王窑大队和城关公社前杜楼大队的贫下中农,发扬“独立自主,自力更生”的革命精神,试制成一种效果很好的土农药,成本很低,威力可不小.其灭蚜效果 Due to the continuous use of commonly used pesticides, pests produce resistance, often spend more, the effect is poor people have unlimited creativity, Yanshi County, Shanhua commune Wangyao brigade and Chengguan commune Former Dole brigade of the poor Under the middle peasants, to carry forward the revolutionary spirit of “independence and self-reliance,” try to make a very effective pesticide with low cost and great power.