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生产上如果长期、单一或反复使用同一种药剂防治同一种病虫害,会出现药效明显减退,甚至无效的现象,这种现象就被称为病虫害的抗药性。病虫害产生抗药性不仅对农药的效力产生严重影响,使生产成本上升,同时盲目用药还会造成土壤环境污染,破坏生态平衡。为了减少和预防抗药性的发生,使用农药时应注意以下几点:轮换(交替)用药单一品种农药会诱发抗药性,生产中可将生物农药、抗生素农药轮换使用,以阻碍生物种群中抗药性种群的形成。交替用药就是在植物的某
If the production of long-term, single or repeated use of the same kind of pesticides to control the same pests and diseases, there will be a marked decline in efficacy, or even invalid phenomenon, this phenomenon is called pest resistance. Insect pests produce resistance not only have a serious impact on the effectiveness of pesticides, so that production costs rise, while blind medication can also cause soil environmental pollution, destroy the ecological balance. In order to reduce and prevent the emergence of drug resistance, the following points should be noted when using pesticides: Rotary (alternate) single species of pesticides will induce resistance, biological pesticides, antibiotics pesticides can be used in rotation to hinder the resistance of biological populations Population formation. Alternating medication is a plant