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我国是一个农业大国,目前年产农药原药24万吨,可加工成农药70多万吨.每年防治病虫草害面积约25亿亩次。近20年来,我国化肥的每亩施用量,超出世界平均水平的1倍多,其利用率只有30%。其余70%的化肥均进入环境,污染水源和土壤,进而影响农作物质量。可见,化学农药在防治病虫害、草害的同时,也可污染环境,从而危害人体健康,甚至影响人的生育能力。
China is a big agricultural country with an annual output of 240,000 tons of pesticide, which can be processed into more than 700,000 tons of pesticides. The annual pest control area is about 2.5 billion mu. In the past 20 years, the application rate of chemical fertilizers per acre in our country has more than doubled that of the world average, and its utilization rate is only 30%. The remaining 70% of the fertilizers are entering the environment, polluting water and soil, thus affecting the quality of crops. Visible, chemical pesticides in the prevention and control of pests, weeds, but also can pollute the environment, thus endangering human health, and even affect human fertility.