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本文从碳酸盐岩成土的元素迁移和富集的角度讨论烤烟优质高产的原因。选择了石灰岩、泥质灰岩、白云岩、泥质白云岩四个典型风化成土剖面，对常量、微量、稀土、稀有四大类共３８种元素进行测试和分析，研究了它们全量、可溶态含量从母岩经风化层到土壤的连续剖面中的分布状况，根据计算的淋溶值和聚积值，找出了各个风化剖面的迁移序列和聚积序列。烤烟中化学元素测试结果表明与烤烟优质高产关系最密切的元素是常量元素中的Ｋ、Ｃａ、Ｐ，微量元素中的Ｓｒ、Ｚｎ、Ｍｏ，稀土元素中的Ｃｅ、Ｌａ、Ｎｄ，稀有元素中的Ｒｂ。灰色关联度分析和模糊综合评判结果表明三叠系茅草铺组上段白云岩类岩石衍生的黄壤是烤烟生长的优势层位
This paper discusses the reasons for the high quality and high yield of flue-cured tobacco from the perspective of the migration and enrichment of elements in carbonate soil. Four typical weathering soil profiles of limestone, argillaceous limestone, dolomite and argillaceous dolomite were selected to test and analyze 38 kinds of elements in four categories, ie, constant, trace, rare earth and rare. According to the calculated leaching value and accumulation value, the migration sequence and accumulation sequence of each weathering section were found. The results of chemical element test in flue-cured tobacco showed that the elements most closely related to the high yield and good quality of flue-cured tobacco were K, Ca and P in trace elements, Sr, Zn and Mo in trace elements, Ce, La and Nd in rare earth elements, Rb. The results of gray correlation analysis and fuzzy comprehensive evaluation show that dolomite-derived yellow soil in the Upper Triassic Maocapu Formation is the predominant layer of tobacco growth