[1]杨文文,张学培,王洪英.晋西黄土区刺槐蒸腾、光合与水分利用的试验研究[J].水土保持研究,2006,13(01):72-75.
　YANG Wen-wen,ZHANG Xue-pei,WANG Hong-ying.Study on Robinia pseudoscacia L.Transpiration, Photosynthesis and Water Use Efficiency[J].Research of Soil and Water Conservation,2006,13(01):72-75.
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晋西黄土区刺槐蒸腾、光合与水分利用的试验研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 13 期数: 2006年01期 页码: 72-75 栏目: 出版日期: 1900-01-01
Title:
Study on Robinia pseudoscacia L.Transpiration, Photosynthesis and Water Use Efficiency
作者:
杨文文, 张学培, 王洪英
北京林业大学水土保持学院水土保持与荒漠化防治国家重点实验室 北京 100083
Author(s):
YANG Wen-wen, ZHANG Xue-pei, WANG Hong-ying
College of Soil and Water Consevation, Beijing Forestry University, Key Laboratory of Soil and Water Conservation and Desertification Control, Beijing 100083, China
关键词:
黄土区; 蒸腾; 光合; 水分利用
Keywords:
the Loess Plateau; transpiration; photosynthesis; water use efficiency
分类号:
S792.27;S715
摘要:
针对黄土地区造林成活率不高，保存率低的情况，就黄土高原的主要造林树种—刺槐的各种生理过程（如蒸腾、光合、气孔导度）的内在规律与环境因子的影响（如光合有效辐射）进行分析研究，以水分合理高效利用为切入点，通过研究气孔行为与蒸腾和光合之间的关系，得到一系列的临界值：从光合有效辐射入手，蒸腾与光合和光合有效辐射之间均呈抛物线关系，在光合有效辐射大于882 umol/（m2·s）时实施措施，既可大大减小蒸腾，又可改善光合；光合与蒸腾的非线性关系可用抛物线方程表述，其中光合速率最高时的蒸腾速率为临界值，超出此值即为奢侈蒸腾；综合分析光合速率、蒸腾速率与气孔导度之间的关系，当气孔导度大于0.35 umol/（m2·s）时，适时提高气孔阻力并抑制蒸腾的措施，既节约水分又促进光合。通过对临界值的分析的，得到黄土高原地区抗旱造林的一些新的方法。
Abstract:
In order to improve the condition of low survival rate of forestation,the inherence law of physiological of Robinia pseudoscacia L.,for example:transpiration rate,photosynthesis rate,stoma conductance,and their affecting environment factors were discussed in view of increasing the plant water use efficiency,such as:photosynthetic active radiation.Through studying the relationship between both transpiration and stomatic behavior and photosynthesis and stomatic behavior,a series of critical values were obtained.The experimental results showed that there was a parabola relationship between both photosynthesis and photosynthetic active radiation and transpiration and photosynthetic active radiation.It is possible that the measures should be taken to prevent transpiration and improve photosynthesis when the photosynthetic active radiation exceeded 882 umol/(m2·s) ;and there was a parabola relationship between photosynthesis and transpiration.The transpiration at the maximum photosynthesis was a critical value,above which,transpiration was the luxurious part.It is possible that the measures for increasing stomatic resistance and preventing transpiration could save water,and improve photosynthesis and yield as well.From the analyses of the critical values,new methods for loess area forestation could be got.

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备注/Memo

收稿日期:2005-1-7;
基金项目:国家农业科技成果转化资金项目（02ZFN216701228）；国家林业局推广项目基金支撑课题
作者简介:杨文文（1982- ），女，籍贯山西，硕士研究生，主要研究方向：林业生态工程.

更新日期/Last Update: 1900-01-01