采用主成分分析方法对多点动态肥料试验聚类分析结果与土壤养分间的关系进行了研究。结果表明,土壤氮素状况是分类的第一主因子,磷素状况是第二主因子,有机质含量是第三主因子。确定类肥料效应函数应用范围的主要依据是土壤碱解氮和全氮含量,其次是土壤有效磷含量,再次是土壤有机质含量。 Principal component analysis was used to study the relationship between multi-point dynamic fertilizer experiment clustering analysis and soil nutrient. The results showed that soil nitrogen status was the first major factor in classification, phosphorus status was the second main factor, and the organic matter content was the third main factor. The main basis for determining the application range of fertilizer effect function is soil alkali-hydrolyzable nitrogen and total nitrogen content, followed by soil available phosphorus content, and again soil organic matter content.