吉林省主要耕作土壤钾素状况研究

Study on Potassium Status of Chief Cultivated Soils in Jilin Province

黑土、白浆土、黑钙土的土壤钾素状况研究结果表明:吉林省3种主要耕作土壤的全钾含量均较高,缓效钾含量丰富,供钾潜力大,速效钾含量在黑土、黑钙土中较高,而在白浆土中稍低。3种土壤的钾素水平取决于含钾矿物的种类与数量。

The chemical method of potassium states in main cultivated soils in Jilin province showed that potassium supplying potentiality of this three soils were bigger than that of southern soil.The contents of total K in above mentioned three soils all were bigger.The contents of slowly availability potassium were plentiful,the contents of rapidly availability potassium were higher in black soil and Thernozem,but it were lower in Albic.Potassium level of three soils was decided by the kind and amount of K-bearing minerals in soils.