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用生物耗竭方法，研究和比较了山东省主要农业土壤：棕壤、褐土和潮土的供钾能力。结果表明，以土壤交换性钾、缓效钾含量和耗竭过程中作物吸钾总量和吸收来自土壤非交换性钾的数量、比率及土壤非交换性钾释放速度和数量为依据，评价土壤供钾能力有褐土＞潮土＞棕壤的总趋势。
Bio-depletion method was used to study and compare the potassium supply capacity of the main agricultural soils in Shandong Province: brown soil, cinnamon soil and alluvial soil. The results showed that soil available (available potassium and slow potassium content and the total amount of potassium absorbed by the crop during exhaustion and the amount and ratio of non-exchangeable potassium absorbed from the soil and the rate and amount of non-exchangeable potassium released by the soil) Potassium power has the general trend of cinnamon soil> Chao soil> brown soil.