摘要
对恩施市高硒区农田土壤Se地球化学特征进行系统研究分析,结果表明:恩施市富硒地区土壤Se含量均值1.8 mg/kg,为全国土壤Se含量均值的6倍,表层土壤Se富集系数约为2.5,成土母岩是土壤Se含量的直接控制因素,土壤Se含量与Fe、S、P、Cd含量有显著正相关关系;土壤Se结合态以腐殖酸结合态、有机结合态和残渣态为主,离子交换态、水溶态Se含量较少,成土过程和人为因素是土壤表层Se含量高的后期因素。
Based on the study of selenium-rich soil in western Hubei to analyse the geochemical characteristics of seleni-um-rich soil systematically. The result shows that：the average of soil is 1.8mg/kg in Enshi, which is six times that ofChina. Selenium content of soil is directly controlled by parent rock, and Fe, S, P, Cd has significant positive correlationfor selenium content. Selenium fraction in soil from Enshi can be divided five types, which the most are humic acid com-bined with state, organic combination of strong state and residue, and soil-forming process and activities controls the Sele-nium content of the soil in the late.
出处
《资源环境与工程》
2016年第6期852-855,894,共5页
Resources Environment & Engineering
关键词
土壤
SE
地球化学特征
恩施市
soil
Se
geochemical characteristics
Enshi area
作者简介
杨良策（1966-），男，教授级高级工程师，地球化学专业，从事水工环地质与地球化学研究与管理工作。E—mail：2570278444@qq．com
