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为了掌握有机氯农药在作物及农业环境中残留动态及污染因素,我们近两年来对石家庄地区的农作物及农业环境等进行了残留动态调查,情况如下: 一、农田土壤和灌溉水中的残留及污染石家庄地区不同县份的调查结果,从0～20厘米耕作层的农田土壤来看,六六六检出率为100%检出范围0.0259～1.360ppm,滴滴涕检出率为100%,检出范围0.0990～12.5924ppm。残留化合物大多分布在深度20厘米以上的表土层。在50～70厘米深层土中六六六的检出率仍为100%,检出范围在0.0488～0.1172ppm,滴滴涕检出范围在0.0068～0.1123ppm。
In order to grasp the residual dynamics and pollution factors of organochlorine pesticides in crop and agricultural environment, we conducted a residual dynamic survey of crops and agricultural environment in Shijiazhuang in the recent two years as follows: 1. Residues and pollution in farmland soil and irrigation water According to the survey results of different counties in Shijiazhuang, from the 0-20 cm tillage farmland soil, the detection rate of BHC was 100%, the detection range was 0.0259-1.360ppm, the detection rate of DDT was 100%, and the detection range was 0.0990 ~ 12.5924ppm. Residues are mostly distributed in the top 20 cm depth of the topsoil. In the depth of 50 ~ 70 cm, the detection rate of BHC was 100%, the detection range was 0.0488 ~ 0.1172ppm, the detection range of DDT was 0.0068 ~ 0.1123ppm.