Study on Potassium Status of Chief Cultivated Soils in Jilin Province

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.