Analysis of the Contents of Selenium in Codetta Grazing System of Northeast Farming-Grazing Enterlocking District in Spring

The selenium contents in soil, Aneurolepidium preferred by codetta and wool of codetta were determined in northeast farming-grazing enterlocking district in May,2002. The results showed that the total average content of selenium was 111. 80 μg/kg in soil, 78.88 μg/kg in Aneurolepidium and 420.28 μg/kg in wool of the grazed codettas. In general, the grazed codetta can not suffer from the disease of selenium deficiency or selenium poisoning in northeast farming-grazing enterlocking district in spring-