本文对土壤钾的形态、矿物钾释放的影响因素及钾的固定、土壤含钾矿物与土壤供钾能力间关系、矿物钾的植物有效性进行了综述 ,表明土壤钾素从有效性的角度进行划分时 ,不能仅把速效性钾和1mol/L热硝酸提取的缓效性钾列为作物吸钾的主要来源 ,而忽视矿物钾的作用 . In this paper, the forms of soil potassium, the factors affecting the release of mineral potassium and the fixation of potassium, the relationship between potassium mineral in the soil and soil potassium availability, and the plant availability of mineral potassium are reviewed, indicating that the soil potassium is from the perspective of effectiveness Divided, can not only the quick-acting potassium and 1mol / L of nitric acid extraction of slow-acting potassium as the main source of crop potassium, while ignoring the role of mineral potassium.