土壤中钾离子的去向取决于不同形态钾之间的动态平衡，由于植物吸收的钾主要直接来源于土壤溶液钾，因此研究土壤对钾的吸附、解吸附动力学尤其重要。自八十年代以来，国外对此进行了较多的研究［１～５］，国内一些学者也做了一定的工作［６，７］。然而前人的研究中，土壤往? The fate of potassium ions in soil depends on the dynamic balance between different forms of potassium. Since potassium absorbed by plants mainly comes from potassium in soil solution directly, it is especially important to study the adsorption and desorption kinetics of soil. Since the 1980s, more studies have been done abroad [1 ~ 5], and some domestic scholars have also done some work [6,7]. However, in previous studies, the soil toward?