四川东部沱江乡茎瘤芥产地的地球化学特征

通过对四川省东部沱江乡茎瘤芥产区土壤的地球化学特征研究和茎瘤芥产区的土壤测试分析，并将其与全国土壤背景值比较，摸清了茎瘤芥产区土壤的元素本底特征。沱江乡茎瘤芥产区土壤Zn、Fe、Mn、Mg、K、B、P元素含量高于全国土壤平均含量，有益元素Mo、Ca、Si、Se均比全国平均值低，重金属Cr、Hg、Cd、Pb含量比全国平均值高，As元素含量则低于全国平均值水平，产区土壤中存在的Cd元素超出国家环境质量一级标准，但符合二级土壤质量标准，其他元素符合绿色蔬菜产地环境标准。

Geochernical Features of Timorous Stem Mustard Producing Area of Tuojiang Township in Eastern Sichuan

This paper studied the soil geochemical features of Timorous Stem Mustard producing area of Tuojiang Township in Eastern Sichuan. By testing the soil of this area, and comparing it with the national soil background value, the features of soil elements were known. The results showed that compared with the average value of national soil,the content of Zn,Fe,Mn,Mg,K,B,P in soil of this area were higher,beneficial elements Mo, Ca,Si,Se were lower,heavy metal elements Cr,Hg,Cd,Pb were higher,and content of As was lower;content of Cd in soil of the producing area was over the first class standard of national environmental quality, but met the second class standard, while other elements accorded with the green vegetable producing environmental standard.