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新一代治抗性杀虫剂─—多虫清４４％乳油（ＰｏｌｖｔｒｉｎＣ４４０ＥＣ）通常一种杀虫剂不可能百分之百地把一个害虫群落全部杀死，总会有一些孑遗，这些中毒而又没有死掉的害虫所繁殖的子代就有可能对这种农药产生耐药性。继续使用这一种农药，这种耐药性的子代比例会...
A New Generation of Resistant Insecticides - Polvtrin C440EC Usually an insecticide can not kill 100% of a pest community and there is always some relict that is poisoned but not dead Of the offspring that breed pests may be resistant to the pesticide. Continue to use this kind of pesticide, the proportion of this drug-resistant offspring will ...