Heavy Metal Pollution Status of Vegetable Cultivation in Yutai,Shandong and Study on the Selective Cultivation

Taking heavy metal pollution in vegetable cultivation in Yutai as the object,the heavy metals Cr,As,Pb,Cd,Hg contents of the heavy metal pollution in vegetable samples from 11 blocks were analyzed.The results showed that the average contents of heavy metals Cr,As,Pb,Cd,Hg in various vegetables were high,and the Pb,Cr content was most obvious,the average vegetables enrichment factor was 3 173.241,harmful products proportion was 96.55%.The average content in descending order of 5 kinds of heavy metals(non-metallic As' s pollution characteristics was similar with heavy metal,so in this collectively referred to as heavy metals) in 11 kinds of vegetables was Pb Cr As Cd Hg.The results showed that the heavy metal content of vegetables was generally high in Yuai area,and Pb were the major pollution elements in Yutai;and then,according to the different heavy metals in the soil were absorbed by different kinds of vegetables,the suggestions of selective cultivation were put forward.