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我国是化学农药的的生产和使用大国,尤其是近二十年来,随着农村劳动力数量和劳作习惯的变化,农业产量对农药、化肥等农资产品的依赖程度日渐提高。同时,由于环境的变化和化学农药的连续大量使用,病虫草害对农药产生了普遍的抗药性,要想持续保持农作物的稳产、高产,就只有加大农药的使用量和毒性强度,农业生产的恶性循环形成。同时,农药的大量使用导致害虫的天敌资源得到了空前的毁灭性破坏,人为地打破了自然界的生态平衡,农药成了防治病虫草害近乎唯一的手段。目前,化学农药年需要量达100万吨制剂,年喷洒药液1亿万吨,目前化学农药的防治面积每年正在快速递增。
China is a big country for the production and use of chemical pesticides. Especially in the past 20 years, with the changes of rural labor force and work habits, the dependence of agricultural output on agricultural products such as pesticides and chemical fertilizers has been increasing. In the meantime, due to the environmental changes and continuous large-scale use of chemical pesticides, pests, diseases and pests have become generally resistant to pesticides. To continuously maintain stable and high-yield crops, pesticide use and toxicity intensity should only be increased. Agricultural production The formation of a vicious circle. In the meantime, the heavy use of pesticides has led to unprecedented destructive destruction of natural enemy resources of pests, artificially breaking the ecological balance in nature, and pesticides have become nearly the only means of preventing and controlling pests. At present, chemical pesticides need to reach 1 million tons per year, spraying 100 million tons of chemicals annually. At present, the area of prevention and control of chemical pesticides is increasing rapidly every year.