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选用24个河南中部具有代表性的土壤样本,分析土壤有机质、全氮、全磷、全钾含量和土壤酶活性的相关性。旨在建立相应的回归方程,利用土壤酶活性推测土壤的肥力情况。结果表明:土壤过氧化氢酶、脲酶、碱性磷酸酶和土壤有机质、全氮、全磷、全钾相关均达到极显著状态。过氧化氢酶和有机质间的相关系数最高,为0.925。蔗糖酶和有机质、全钾之间相关均达到极显著状态,但和全氮、全磷相关不显著。过氧化氢酶、碱性磷酸酶、脲酶、蔗糖酶之间的相关性也均达到极显著状态,其中过氧化氢酶和碱性磷酸酶的相关系数最高,为0.914。由此建立起相应的回归方程。
Twenty-four representative soil samples from central Henan were selected to analyze the correlation between soil organic matter, total nitrogen, total phosphorus, total potassium and soil enzyme activities. The purpose is to establish the corresponding regression equation and to use soil enzyme activity to infer soil fertility. The results showed that the correlation between soil catalase, urease, alkaline phosphatase and soil organic matter, total nitrogen, total phosphorus and total potassium reached extremely significant. The highest correlation coefficient between catalase and organic matter was 0.925. The correlation between invertase, organic matter and total potassium reached extremely significant level, but not significantly correlated with total nitrogen and total phosphorus. The correlations between catalase, alkaline phosphatase, urease and sucrase also reached significant levels, of which catalase and alkaline phosphatase had the highest correlation coefficient of 0.914. Thus establish the corresponding regression equation.