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提出并试验了用阳离子交换膜研究原状土壤剖面的新方法,该法可以测定原状土壤剖面各个微区有效钾的释放速率。
A new method of studying the original soil profile by cation exchange membrane was proposed and tested. The method can measure the release rate of available potassium in each micro-region of the undisturbed soil profile.