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本文报道了对板栗（Ｃａｓｔａｎｅａ ｍｏｌｌｉｓｓｉｍａ，Ｂｌ．）部分品种的光合速率、光呼吸速率及影响品种间光合速率差异的主要因子的研究。结果表明，板栗品种间光合速率、光呼吸速率差异显著，光合速率的大小与品种的原产地有关。在所测诸因子中，叶绿素ａ、叶绿素（ａ＋ｂ）及比叶重与光合速率的相关性不明显，而气孔分布状况、栅栏组织的相对厚度及叶绿素ｂ含量与品种间光合速率大小有关，达到极显著或显著水平，可以作为高光效品种的考察指标。
In this paper, the main factors that affect the photosynthetic rate, photosynthetic rate and the difference of photosynthetic rate among some varieties of Castanea mollissima (Bl.) Were reported. The results showed that there was significant difference in photosynthetic rate and photosynthetic rate among chestnut varieties, and the photosynthetic rate was related to the origin of the cultivars. Among the tested factors, the correlation between chlorophyll a, chlorophyll (a + b) and specific leaf weight and photosynthetic rate was insignificant, while stomatal distribution, relative thickness of palisade tissue and chlorophyll b content were related to photosynthetic rate Very significant or significant level, can be used as indicators of high light efficiency species.