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土壤肥力是制约高寒半于旱栗钙土区农业持续发展的关键因子。采用野外调研和田区培肥定位试验相结合的方法，应用相关分析、逐步回归、主成份分析等多元数理统计原理，建立了该区栗钙土土壤肥力评价指标体系。研究表明：蔗糖酶、易氧化碳、速效氮、速效磷、阳离子代换量、＜０．０１ｍｍ的物理性粘粒、重组碳、原上复合量 ８个指标是反映耕层土壤肥力的“体质”指标；剖面第二层的＜０．０１ｍｍ物理性粘粒、碳酸钙含量以及表土层厚度是反映上体构型状况的主要“体型”指标，两者共同构成了该区土壤肥力指标体系。
Soil fertility is the key factor that restricts the semi-agroforestry in the continuous development of agriculture in the area of the chestnut soil. Using the method of field research and field experiment of fertilization and fertilization locating, the evaluation index system of soil fertility of chestnut soil in this area was established by using the principle of multivariate statistics, such as correlation analysis, stepwise regression and principal component analysis. The results showed that: sucrose enzyme, readily oxidizable carbon, available nitrogen, available phosphorus, cation exchange capacity, <0.01mm physical clay, recombinant carbon, the original composite of eight indicators is to reflect the topsoil of soil fertility, The index of physical clay, calcium carbonate content and topsoil thickness of the second layer of the profile is the main “figure” which reflects the status of the upper body configuration. Both of them constitute the index system of soil fertility in this area.