对广东潮州凤凰山区不同地域的50种凤凰单枞茶树品系的叶缘锯齿数、侧脉数、叶形、叶绿素含量、叶面积（LA）、叶干物质量（LDMC）、比叶面积（SLA）等叶片形态和功能性状进行了比较研究,并对不同海拔地带的12种凤凰单枞茶树主要叶片性状进行了地域变异研究。结果显示,50种凤凰茶树叶片形状为卵圆形至长卵形（叶形指数1.99~3.16）,叶绿素含量平均为64.348（SPAD测定读数）,平均单叶面积24.237 cm²,叶干物质含量40.65%,比叶面积80.947 cm²·g^-1。50种凤凰单枞茶树的叶面积变异最大（变异系数为21.12%）,比叶面积变异次之（18.3%）,叶形状（9.8%）和叶绿素含量（10.4%）变异较小,叶干物质含量变异最小（5.9%）;南馥茶园的兰花香、柚花香、宋种、八仙、桂花香、夜来香、蜜兰香等品系叶片单位面积合成的有机物质较多,对外界资源有效利用率较高;南馥茶园的玉兰香、水仙、姜花香、杨梅叶和区山塘茶园的玉兰香等品系叶片单位面积合成的有机物较少,对外界资源有效利用率较低;高海拔地带的部分凤凰单枞茶树具有叶面积大、叶干物质含量少、比叶面积大、叶绿素含量多的趋势,表明种植地域的海拔对凤凰单枞茶树叶片性状有较大影响。

Leaf traits are basic and important characters in the ecological strategies of plants. In this paper, leaf traits including leaf vein, serration of leaf margin, index of leaf shape, chlorophyll content, leaf area (LA), leaf dry matter content (LDMC), specific leaf area (SLA) of 50 Fenghuang Dancong tea cultivars in eastern Guangdong were investigated, and while geographic variance in leaf trait of 12 tea cultivars from three altitudes were detected to provide basic information for cultivation of Fenghuang Dancong tea. The results showed that the leaf shape was from ovate to long ovate (index of leaf shape is 1.99~3.16), mean chlorophyll content was 64.348(SPAD data), mean leaf area was 24.237 cm², mean leaf dry matter content was 40.65%, and specific leaf area was 80.947 cm²·g^-1. The coefficients of variation of leaf area, specific leaf area, chlorophyll content, leaf shape, and leaf dry matter content were 21.12%, 18.3%, 10.4%, 9.8%, and 5.9% respectively. There was a tendency that LA, SLA and chlorophyll content of leaf of Fenghuang Dancong tea cultivars increased, and LDMC of leaf decreased with increasing of altitude. It indicated that he altitude of planting region may have a significant influence on leaf traits of Fenghuang Dancong tea cultivars.