使用化学农药防治作物病虫害,是提高农业产量的一项重要措施。早期是使用硫酸铜和砷酸铅等“第一代农药”,已有上百年的历史。二次大战后,发现滴滴涕具有良好的杀虫效果,从此开始大量生产和使用有机氯、有机磷和氨基甲酸酯类农药,收到了巨大的防治效果。可惜这些“第二代农药”的成功时间不长,到现在已有二百五十种以上的昆虫对不同的农药产生了不同的抗性。失去防治效果,同时造成环境污染,农药公害已成 The use of chemical pesticides to control crop pests and diseases is an important measure to increase agricultural output. Early use of copper sulfate and lead arsenate, “the first generation of pesticides,” has been a hundred years of history. After the Second World War, DDT was found to have a good insecticidal effect. Since then, mass production and use of organochlorine, organophosphorus and carbamate pesticides have received tremendous control effects. Unfortunately, these “second-generation pesticides” have not been successful for so long. So far more than two hundred and fifty insects have had different resistance to different pesticides. Lose control effect, at the same time cause environmental pollution, pesticide pollution has become