湖北宜城市东南部地区富硒土壤资源调查与评价

Investigation and Evaluation of Selenium-rich Soil Resources in Southeastern Yicheng city of Hubei

通过1∶5万土壤地球化学测量,对宜城市东南部地区土壤中硒元素进行研究,结果表明:研究区内表层土壤中硒元素的平均含量为0.31 mg/kg,总体足硒,局部富硒,富硒土壤面积达30 km^2;农作物样品中,小麦有90%、水稻90%、玉米96%、白菜40%达到了富硒农产品的标准;农田区As、Hg、Pb等主要重金属有害元素含量符合国家关于无公害、绿色产品产地土壤环境质量的要求。因此,在该地区开发优质富硒农产品,具有良好的资源优势与发展潜力。

The results ol geochemical evaluation ol land quality （phase I） in Yicheng city, Hubei Province are signifi-cant. The average content ol selenium in surface soil ol southeast area ol Yicheng is 0. 31 mg/kg, total selenium is e- nough,local selenium is rich,and selenium rich soil area is 30 km2. Among the crop samples,wheat has 90% ,rice 90% , corn 96% and Chinese cabbage 40% ,which reaches the standard ol selenium enriched agricultural products. The con-tents ol major heavy metals, such as As, Hg and Pb, meet the requirements ol national environmental quality ol non pollu-tion and green products, and have good resource advantages and potential lor developing selenium-rich natural and quality ol agricultural products.