为明确贵州主产区核桃（Juglans regia Linn.）种仁微量元素（Fe、Mn、Cu、Zn）含量特征及其与土壤性状的关系，对主产区18个县级行政区的143个核桃种仁样品及对应土壤样品进行了检测和分析，并进行了Spearman相关性分析。结果表明：核桃种仁中Fe、Mn、Cu、Zn含量的均值分别为21.70、39.13、12.33、17.25 mg·kg^-1，生物富集系数的均值分别为0.001 4、0.099 6、0.668 3和0.692 9。总体来看，粉(砂)质黏壤土和黏壤土中核桃种仁的Fe、Mn、Cu、Zn含量及生物富集系数较高。供试土壤样品中，92.6%的土壤介于微酸性至微碱性，88.9%的土壤有机质极为丰富，且半数以上土壤的有效Fe、Mn、Cu、Zn含量达到中上及以上等级水平。粉(砂)质黏壤土的有机质含量及有效Fe、Mn、Cu和Zn含量在6种质地类型土壤中均最高。相关性分析结果表明：核桃种仁的Fe、Mn、Cu含量仅与少量土壤性状和个别颗粒含量呈显著（P＜0.05）或极显著（P＜0.01）相关性。综合分析认为，贵州主产区核桃种仁的Fe、Mn、Cu、Zn含量相对较高；粉（砂）质黏壤土和黏壤土更利于核桃种仁中微量元素的积累。通过调节土壤pH值、提高土壤微量元素有效态含量以及选择合适质地土壤，可有效提高贵州地区核桃种仁的微量元素含量，从而提升该地区核桃的营养价值。

 To clarify the characteristics of contents of trace elements (Fe, Mn, Cu, and Zn) in Juglans regia Linn. kernels from main producing areas of Guizhou Province and their relationships with soil properties, 143 J. regia kernel samples and corresponding soil samples from 18 administrative areas at county level of main producing areas were detected and analyzed, and the Spearman correlation analysis was conducted. The results show that the mean contents of Fe, Mn, Cu, and Zn in walnut kernels are 21.70, 39.13, 12.33, and 17.25 mg·kg^-1, respectively, and the mean bioconcentration factors are 0.001 4, 0.099 6, 0.668 3, and 0.692 9, respectively. Overall, the contents and bioconcentration factors of Fe, Mn, Cu, and Zn of J. regia kernels from silt (sandy) clay loam and clay loam are relatively high. Among the test soil samples, 92.6% of soils are between slightly acidic and slightly alkaline, the organic matter in 88.9% of soils is extremely rich, and the available contents of Fe, Mn, Cu, and Zn in over half of soils reach upper middle and above grade levels. Among the soils of six texture types, the organic matter content and available contents of Fe, Mn, Cu, and Zn are all the highest in silt (sandy) clay loam. The correlation analysis result reveals that contents of Fe, Mn, and Cu in J. regia kernels show significant (P＜0.05) or extremely significant (P＜0.01) correlations with only a few soil properties and specific particle contents. The comprehensive analysis suggests that the contents of Fe, Mn, Cu, and Zn in J. regia kernels from main producing areas of Guizhou Province are relatively high; silt (sandy) clay loam and clay loam are more conducive to trace element accumulation in J. regia kernels. By adjusting soil pH value, improving soil available trace element contents, and selecting suitable soil textures, the trace element contents in J. regia kernels from Guizhou Province can be effectively enhanced, thereby improving their nutritional value in this area.