文献类型：期刊文献

中文题名：广西北热带岩溶区蚬木幼苗的光合与蒸腾特性

英文题名：Photosynthesis and Transpiration Characteristics of Excentrodendron hsienmu Seedlings in Guangxi Tropical Karst Area

作者：朱宏光[1] 刘正富[1] 苏建苗[2] 农友[1] 王家妍[1] 李燕群[1] 赵金龙[1] 林建勇[1] 温远光[1]

第一作者：朱宏光

机构：[1]广西大学林学院;[2]中国林业科学研究院热带林业实验中心

年份：2011

卷号：39

期号：12

起止页码：7147-7149

中文期刊名：安徽农业科学

外文期刊名：Journal of Anhui Agricultural Sciences

收录：北大核心:【北大核心2008】；

基金：广西自然科学基金项目(桂科基0639006);国家林业局中南速生材繁育重点实验室开放基金项目[KF(2004)-002];"十一五"广西林业科技项目[林科字(2008)第08号]

语种：中文

中文关键词：蚬木;光合作用;蒸腾作用;气孔导度;水分利用效率;岩溶地区

外文关键词：Excentrodendron hsienmu; Net photosynthesis; Transpiration rate; Stomata conduct; Water use efficiency; Karst area

分类号：S79

摘要：[目的]研究北热带岩溶区优势树种蚬木幼苗的光合与蒸腾特性。[方法]利用野外生长正常的1～2年生蚬木实生苗,经盆栽和控水试验,研究其净光合速率、蒸腾速率、气孔导度、水分利用效率的变化。[结果]正常供水和长期干旱处理的幼苗,其净光合速率、蒸腾速率、气孔导度、水分利用效率存在极显著差异,长期干旱将显著降低净光合速率、蒸腾速率和气孔导度,提高水分利用效率。[结论]蚬木具有光合、蒸腾速率较低,水分利用效率较高,抗旱性较强的生态特性。
[Objective] The aim of this paper was to study the photosynthesis and transpiration characteristics of E.hsienmu seedlings under different water conditions.[Method] The effect of water stress on the net photosynthesis rate,transpiration rate,stomata conduct and water use efficiency of 1-2-year old seedlings of E.hsienmu was studied by pot experiment.[Result] There were significant difference in net photosynthesis rate,transpiration rate,stomata conduct and water use efficiency of the E.hsienmu seedlings under pot experiment of different water conditions.The condition of long-term water stress is decreasing the net photosynthesis rate,transpiration rate,stomata conduct of seedlings,whereas increasing the water use efficiency.[Conclusion] The ecological characteristics of E.hsienmu seedlings are lower photosynthesis rate,transpiration rate and higher water use efficiency,drought resistance.