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对12种旱地赤红壤与1种参比水稻土的钾素Q/I特性进行比较，结果表明，旱地由于土壤粘粒少，有机质质量分数低等因素的影响，其易释放钾库及供钾能力均小，钾位的缓冲性能很差，阳离子交换量较低；如不施钾肥或施肥不当，会造成作物减产或钾素损失。而由不同母质发育的旱地赤红壤，Q/I特性差别不大。
Comparison of Q / I characteristics of 12 kryptonite and 1 reference paddy soil showed that the dryland could release potassium and potassium easily due to less soil clay and low organic matter mass fraction Small capacity, poor potassium buffer performance, lower cation exchange capacity; such as the lack of fertilizer or improper fertilization, will result in crop production or loss of potassium. However, the Q / I characteristics of dryland red soil developed from different parent materials are not different.