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我区在60～70年代,曾对农作物广泛使用有机氯农药,造成土壤、水源、农作物(茶树)中的严重残留.国家于1976年起禁止生产和使用这两种农药.使六六六、DDT残留量逐渐有所下降.但随着使用农药品种的更换,特别是三氯杀螨醇的使用,因其含有4%～10%DDT成分,故必然造成土壤、水源以及农作物(茶叶)中DDT残留量的升高.为了解新农药对茶叶的影响,1993～1995年对茶叶进行了有机氯残留量的检测,结果报告如下:1 材料与方法
In the 1960s and 1970s, our district used organochlorine pesticides extensively on crops, resulting in serious residues in soils, water sources and crops (tea trees), and the state banned the production and use of these two pesticides since 1976. In 2006, DDT residues gradually decreased, but with the replacement of pesticide varieties, especially dicofol, which contains 4% -10% of DDT, it is bound to cause DDT residues in soil, water and crops (tea leaves) Increased.In order to understand the impact of new pesticides on tea, tea residues from 1993 to 1995 were detected, the results reported as follows: 1 Materials and methods