温县怀山药种植区土壤重金属含量及污染评价

Content and pollution evaluation of heavy mental from the Huai yam planting soil in Wenxian

为研究温县怀山药种植区土壤中重金属污染情况,以温县怀山药种植基地中9个有代表性的怀山药田地土壤样品和1个小麦田地土壤样品为研究对象,对土壤中的Cu,Cr,Pb,Zn,Ni 5种重金属元素含量进行分析,实验结果显示研究区9个怀山药田土样中Cu,Cr,Pb,Zn,Ni 5种元素单因子污染指数最大值分别为0.361,0.345,0.597,0.182,0.939,5种重金属元素的含量均未超标,但Zn的单因子污染指数最高.Zn含量偏高的原因主要是由于怀山药种植过程中使用含Zn化肥和农药造成的.

In order to research the soil heavy mental polution in the Huai yam planting soil in Wenxian,we collected 9 Huai yam soil samples and 1 wheat soil samples in the study areas,the amount of Cu,Cr,Pb,Zn,Ni in the soil were analyzed.The results show that： in the 9 huai yam soil samples,the maximum of the single pollution index of Cu,Cr,Pb,Zn,Ni are 0.361,0.345,0.597,0.182,0.939,the amounts of the 5 heavy mental elements were not beyond the standard limiting value,the single pollution index of Zn is the highest of all the 5 henvy mentals,the fertilizer and pesticides containing Zn were major reason.