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作 者 ：邱莉萍;刘军;王益权;孙慧敏;和文祥

期 刊 ：植物营养与肥料学报 2004年 10卷 3期 页码：277-280

关键词：土壤酶活性；土壤肥力；相关分析；通径分析；主成分分析；

Keywords:soil enzyme, soil fertility, correlation analysis, path analysis, principal component analysis,

摘 要 ：通过长期定位试验地中土壤养分和酶活性的测定结果,将其进行了相关分析、通径分析和主成分分析。结果表明,土壤脲酶和碱性磷酸酶活性可以作为土壤肥力的指标,且酶活性大小受到土壤化学性质和其它酶活性影响。土壤主成分分析能较为客观地评价土壤肥力水平。

Abstract:The soil enzyme activities and nutrient content were assayed in long-term fertilizing soil samples. The results obtained by the correlation, path and principal component analysis showed that soil urease and alkaline phosphatase activities could be as a comprehensive index of soil fertility, and their enzyme activities are affected by soil chemical properties and other enzymes. Soil fertility could be evaluated objectively by principal component analysis.

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