典型蔬菜种植区土壤中有机氯农药及植物杀菌剂残留研究

Study on the Residual of Organochlorine Pesticides and Plant Bactericide in Soil of Typical Vegetable Planting Area

[目的]研究山东枣庄地区蔬菜种植区土壤中有机氯农药及植物杀菌剂代森锌的残留情况。[方法]选取山东枣庄地区3个较为典型的蔬菜种植区为调查对象,采用土壤系统布点法,对土壤中的有机氯农药六六六、DDT、氯丹、七氯及代森锌进行采样分析。[结果]六六六、DDT、氯丹、七氯全部被检出,残留量为低浓度水平,代森锌未检出。DDT、六六六、七氯、氯丹的单因子污染指数最大值分别为0.648 0、0.269 0、0.044 0、0.000 4,属于土壤环境质量评价等级Ⅰ级,为无污染级别。采样区1、2、3的土壤综合污染指数平均值分别为0.414 7、0.191 8、0.122 7,污染等级为清洁(安全)。[结论]3个典型蔬菜种植基地土壤环境质量整体良好。

Objective] The aim was to study the residual of organochlorine pesticides and plant bactericide in soil of vegetable planting area in Zaozhuang Region, Shandong Province.[Method] Selecting 3 typical vegetable planting area as investigation objects, by using soil system distri-bution method, the organochlorine pesticides 666, DDT, chlordane, seven-chlorine and plant bactericide zineb in soil were analyzed.[Result] 666, DDT, chlordane and seven-chlorine were all detected with low concentration of residual, zineb was not detected.The maximum value of sin-gle factor pollution index of DDT, 666, seven-chlorine and zineb was 0.648 0, 0.269 0, 0.044 0, 0.000 4, respectively, belongs to the evalua-tion of soil environmental quality grade I, no pollution level.The mean of soil comprehensive pollution index in 3 sampling plots were：sampling plot 1 0.414 7, sampling plot 2 0.191 8, sampling plot 30.122 7, pollution level was clean（safe）.[Conclusion] The overall quality of 3 typical vegetable planting base soil environment is good.