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六六六是浙江省农药的“当家”品种。一九八○年全省销售含有六六六的制剂六万一千八百余吨。一九五二年至一九八○年的二十九年中,含六六六制剂累计销售量达八十七万七千吨,占全省农药销售总量的70％左右。六六六在防治农作物害虫,保证农业丰收方面起了巨大作用。但是由于残留毒性、抗性等问题越来越严重,日益感到压缩六六六用量是农药工作中一个急待解决的问题。 1.六六六污染农副产品,人体中六六六含量增加。一九七九年浙江省粮科所抽测余杭、绍兴等十个县稻谷样品一百二十九个(代表九千七百三十七万斤稻谷),六六六检出率达100％,含量平均值为0.968ppm,超过1ppm标准的达44.9％,最高含量为2.67
BHC is a “master” variety of pesticides in Zhejiang Province. In 1980, the province sold more than 61,800 tons of preparations containing 666. During the 29 years from 1952 to 1980, the cumulative sales of 666-containing preparations reached 877,000 tons, accounting for about 70% of the total pesticide sales in the province. 666 has played a significant role in preventing crop pests and ensuring the agricultural harvest. However, due to the increasingly serious problems of residual toxicity and resistance, it is increasingly felt that the compression of BHC content is an urgent issue for pesticide work. 1.666 pollution of agricultural and sideline products, the content of BHC increased in the human body. In 1979, the Grain Bureau of Zhejiang Province took samples of 129 rice samples (representing 97.37 million tons of rice) in 10 counties of Yuhang and Shaoxing, and the detection rate of 666 was 100% The average content of 0.968ppm, more than 1ppm standard up to 44.9%, the maximum content of 2.67