青海高原土壤中硒的研究

对青海十六个土类土壤中硒的含量和分布进行了研究。结果表明：各类土壤剖面硒平均含量差异显著。以沼泽土最高。黑毡土最低；各地区表层土含硒量以柴达木盆地细土沉积带至中心地区，祁连山南麓、等大部分地区较低。总体评价，青海省属低硒区域，但多数土类表层土硒的平均含量高于全国。

Study on Selenium in Soils of Qinghai

This research dealt with Se content and distribution of 16 soil types of Qinghai.The result showed that the content of Se was significant difference in different type of soil.It was highest in swamp soil 0 296mg/kg and the lowest in sub-alpine meadow soil 0 08mg/kg Se content of soil surface stratum was relatively high in the south foot of the Qilian mountain,the east of the Qinghai and the region from soil deposited belt to center of the Chaidamu basin 0 2mg/kg.In the west part of Haixi and Yusu,the region of Kuokuoxili and the almost whole area of Guolo,the Se content of soil surface stratum was low 0 1mg/kg.In general,the Qinghai province belongs to the region of low selenium,but the Se content of surface stratum was higher than that whole country in same type of soils.