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通过盆栽试验及272个土壤样品分析表明2mol/LHNO_3法能有效地用于衡量土壤供钾状况。并且只有对原法中火焰光度计定量钾部分进行改进,降低浸出液的酸度后才能用于批量土样分析。
Pot experiment and 272 soil samples showed that the 2 mol / L HNO 3 method can effectively measure the potassium supply in soil. And only the original method of flame photometric potassium part of the improvement to reduce the acidity of the leachate for bulk soil sample analysis.