| 蛇皮果幼株净光合速率初步研究 |
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| 引用本文： | 李荣生,尹光天,杨锦昌,邹文涛,林彦,李建光,张帅.蛇皮果幼株净光合速率初步研究[J].西南林学院学报,2012(4):100-102. |
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| 作者姓名： | 李荣生 尹光天 杨锦昌 邹文涛 林彦 李建光 张帅 |
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| 作者单位： | 1. 中国林业科学研究院热带林业研究所,广东 广州 510520
2. 国家林业局桉树开发研究中心,广东 湛江 524022 |
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| 基金项目： | 基金项目：中国林业科学研究院基本科研业务费专项资金（RITFKYYW2010-02）资助;国家林业局948引进项目（2007-4-11）资助. |
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| 摘 要： | 用CIRAS-2光合仪对蛇皮果1年生和2年生幼株的净光合速率进行测定，结果表明：蛇皮果1、2年生幼株以顶端第1片叶的净光合速率最低，第2片叶的最高，此后位置越向下的叶片其净光合速率越低。1年生蛇皮果幼株顶端第2片叶的光合有效辐射的光饱和点和光补偿点分别为1500μmol／（m2·s）和50μmol／（m2·s）；净光合速率日变化则为双峰曲线，2个峰值分别在10：00、14：00或16：00。
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| 关 键 词： | 蛇皮果 幼株 净光合速率 |
Characteristics of Net Photosynthesis Rate of Salacca zalacca Saplings |
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| LI Rong-sheng,YIN Guang-tian,YANG Jin-chang,ZOU Wen-tao,LIN Yan,LI Jian-guang,ZHANG Shuai.Characteristics of Net Photosynthesis Rate of Salacca zalacca Saplings[J].Journal of Southwest Forestry College,2012(4):100-102. |
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| Authors: | LI Rong-sheng YIN Guang-tian YANG Jin-chang ZOU Wen-tao LIN Yan LI Jian-guang ZHANG Shuai |
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| Institution: | 1. Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou Guangdong 510520, China; 2. Research and Development Center for Eucalypt, State Forestry Administration, Zhanjiang Guangdong 524022, China) |
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| Abstract: | Net photosynthesis rate （Pn） of 1 -2 years old Salacca zalacca saplings was measured with CIRAS - 2 portable photosynthesis system. The results showed that the first top leaf had the lowest Po value, while the second leaf to the top had a highest Pn value for both lyr and 2yr S. zalacca saplings. The Pn value decreased gradually from the second leaf to the top toward to the lowest one. The value of saturation PAR and compensation PAR of the second leaf to the top of 1 yr old sapling was 1 500μmol/（m2·s）and 50 μmol/（m2·s） respective- ly. There were two peaks in the diurnal Pn variation curve during the day time, which occurred at 10 am in the morning and at 2 pm or 4 pm in the afternoon. |
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| Keywords: | Salacca zalacca sapling net photosynthesis rate |
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