安徽省宣城市土壤硒地球化学特征及成因分析

邢润华

Geochemical characteristics and genesis of selenium in soil in Xuancheng City, Anhui Province

XING Run-Hua

图3 不同成土母质土壤硒含量等级比例

Fig.3 Grade proportion of soil selenium content in different soil forming parent materials