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农药的应用已成为农业生产的必要措施,克拉默(Cramer)早在七十年代就指出全世界因病、虫、杂草的危害,每年将损失农作物总收成的1/3。随着农业生产的发展,更需要不断研制各种功能的新农药。人们最早主要使用植物性及无机农药,到四十年代,合成的有机氯及有机磷农药才进入市场。其后有机汞、有机砷、有机硫、有机氟农药相继出现。到六十年代,环境检测分析手段的提高,证明有机氯、有机汞、有机砷等农药既非生物体的组成成分,也不易
The application of pesticides has become a necessary measure for agricultural production. As early as the 1970s, Cramer pointed out that the world is suffering from disease, insects and weeds and will lose one third of its total crop a year. With the development of agricultural production, it is even more necessary to continuously develop new pesticides with various functions. The earliest people to use mainly plant and inorganic pesticides, the forties, synthetic organic chlorine and organophosphorus pesticide before entering the market. Later, organic mercury, organic arsenic, organic sulfur and organic fluorine pesticides appeared one after another. By the 1960s, improvements in environmental testing and analysis methods proved that pesticides such as organochlorine, organic mercury and organic arsenic were neither easily formed nor bioequitable