目的综合比较不同种植区九寨刀党质量,为九寨刀党种植区域规划提供依据。方法采用SPSS17.0分析软件对来源于九寨沟县不同种植区的38份九寨刀党样品的主要性状及化学成分进行主成分分析及聚类分析。结果筛选出特征根累计贡献率达到85.604%的5个主成分;以主成分分析确定的主成分值为指标,采用组内连接聚类法对不同种植区九寨刀党质量指标进行聚类分析,将38份样品划分为4类。结论通过主成分聚类分析对不同种植区九寨刀党质量进行综合评价,此方法具有较强的可行性。九寨沟县不同种植区九寨刀党质量差异较大,需要加快规范化栽培技术的研究与应用。

To comprehensively compare the qualities of Codonopsis Radix from the different planting areas for regionalizing the planting areas. Methods The main traits and chemical compositions of 38 samples of Codonopsis Radix from the different planting areas in Jiuzhaigou County were comprehensively compared by SPSS 17.0 software using principal component and cluster analysis. Results Five principal components whose accumulated variance contribution rate was over 85.604% were obtained. Based on these principal components, 38 samples of Codonopsis Radix from the different planting areas in Jiuzhaigou County were clustered into four groups by within-groups linkage cluster methods. Conclusion Principal component and cluster analysis are reliable to comprehensively evaluate the quality of Codonopsis Radix. Significant differences among these samples from the different planting areas in Jiuzhaigou County are obvious. The standardization of cultivation techniques and application should be speeded up.

四川省科技富民强县专项行动计划项目