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农药在农业生产中为保证作物的良好生长,保收和保藏上起着很大的作用。我国生产的农药的主要品种,长期来一直是以有机氯农药占首位(约占农药总产量的60%左右),其中主要为六六六,其次为DDT。有国际上,自40年代初开始各国相继使用DDT和六六六等有机氯农药以来迄今已有30多年的历史,对人类作出了很大的贡献。但由于有机氯农药的化学性质极为稳定,以及其脂溶性质,在生物体内大量蓄积,在环境和机体内不易降解,并且由
Pesticides play a significant role in agricultural production in ensuring the good growth, harvesting and preservation of crops. The main varieties of pesticides produced in China have long been dominated by organochlorine pesticides (accounting for about 60% of the total pesticide production), of which mainly are 666, followed by DDT. Internationally, it has been 30 years since the beginning of the 1940s that all countries use organochlorine pesticides such as DDT and hexacostane, which have made great contributions to mankind. However, due to the extremely stable chemical nature of organochlorine pesticides and their fat-soluble properties, they accumulate in large quantities in organisms and are not easily degraded in the environment and in the body,