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对5个板栗品种叶长、叶宽、叶面积、叶形指数等性状的分析，表明叶形指数稳定性强，能较准确地反映不同品种的叶形特征。叶长、叶宽、叶长×叶定与叶面积存在着极显著的正相关，但以叶长×叶宽与叶面积的相关性最强，其相应的回归方程用于叶面积的测定更为精确。魁栗、紫油光、上光栗、本地土板栗4个品种可共用1个方程（x为叶长×叶宽）进行叶面积测定。
The analysis of the leaf length, leaf width, leaf area and leaf index of five chestnut varieties showed that the leaf index index was highly stable and could reflect the leaf shape characteristics of different varieties more accurately. Leaf length, leaf width, leaf length × leaf diameter and leaf area had a significant positive correlation, but leaf length × leaf width had the strongest correlation with leaf area, and the corresponding regression equation was used to determine the leaf area more To be precise. Curcuma, purple shine, glazed chestnut, native soil chestnut four varieties can share one equation (x is leaf length × leaf width) leaf area determination.