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研究了烟叶１２种营养元素（Ｎ、Ｐ、Ｋ、Ｃａ、Ｍｇ、Ｓ、Ｃｌ、Ｃｕ、Ｆｅ、Ｍｎ、Ｚｎ、Ｂ）及还原糖（ＲＳ）、烟碱（ＮＴ）含量和区域分布特点，建立了它们与评吸质量的线性回归、多元回归方程，并阐明各元素适宜水平有利于烟叶品质的提高。初步发现烟叶低氯含量与评吸品质呈正相关关系。易超过上限含量的Ｎ、Ｃａ、Ｓ、Ｃｌ、Ｆｅ等元素均能使品质降低。河南烟区烟叶评吸质量具有区域间变化小的特点，进一步提高具有同等潜力。在当前生产技术条件下，Ｋ是提高烟叶品质的主导因素，可能还有Ｍｎ、Ｚｎ、Ｂ元素（因土壤类型不同而异），高Ｃａ含量成为限制烟叶品质改善的制约因素之一。
The contents of 12 kinds of nutrients (N, P, K, Ca, Mg, S, Cl, Cu, Fe, Mn, Zn, B), the content of reducing sugar (RS) and nicotine (NT) The linear regression and multivariate regression equations between them and smoking quality were established, and the appropriate level of each element was found to be beneficial to the improvement of tobacco quality. The results showed that there was a positive correlation between low chlorine content and smoking quality. Easily exceed the upper limit of the content of N, Ca, S, Cl, Fe and other elements can make the quality lower. Tobacco leaf smoking quality of Henan tobacco has the characteristics of small changes between regions and further improvement has the same potential. Under the current production technology, K is the dominant factor to improve the quality of tobacco leaves, and possibly Mn, Zn and B elements (due to different soil types). High Ca content is one of the limiting factors to improve tobacco quality.