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不同水分条件下CO2浓度升高对植物生长及水分利用效率的影响
引用本文:俞满源,黄占斌,山 仑.不同水分条件下CO2浓度升高对植物生长及水分利用效率的影响[J].中国生态农业学报,2003,11(3):110-112.
作者姓名:俞满源  黄占斌  山 仑
作者单位:中国科学院,水利部,水土保持研究所,杨陵,712100
基金项目:国家重点基础研究(973)发展规划项目(G1999011708)及黄土高原土壤侵蚀与旱地农业国家重点实验室基金项目(2000B006)共同资助
摘    要:研究分析了不同水分条件下CO_2浓度升高对植物生长、生理和水分利用效率等影响,指出水分亏缺下CO_2浓度升高有利于植物生长,植物叶面积增大,生物量增加,根/冠值增加,且改善植物气孔生理,减少水分蒸腾,提高叶水势,维持植物水分胁迫下正常光合作用,提高植物经济产量和水分利用效率。CO_2浓度升高一定程度补偿了水分亏缺对植物产生的负面影响,对农业节水增产有重要意义。

关 键 词:CO_2浓度升高  植物生长  水分利用效率
收稿时间:2002/12/10 0:00:00
修稿时间:2002年5月24日

Response of plant growth and water use efficiency to different water contents under environmental CO2 concentration raising
YU Man-Yuan,HUANG Zhan-Bin and SHAN Lun.Response of plant growth and water use efficiency to different water contents under environmental CO2 concentration raising[J].Chinese Journal of Eco-Agriculture,2003,11(3):110-112.
Authors:YU Man-Yuan  HUANG Zhan-Bin and SHAN Lun
Abstract:The paper analyzes the response of plant growth, physiological process and water use efficiency, etc. on different water conditions under CO2 concentration raising. The results show that CO2 raising will produce positive effect on plant growth under water deficient conditions, such as increasing of plant leaf area, dry biomass, and root / shoot ratio. Meanwhile, it can improve stoma physiology, reduce water transpiration, raise water potential of plant leaf, and enhance grain yield of crop and the water use efficiency, and compensate the adverse effect of water deficiency on plant growth and water use efficiency. This has an important meaning on waler saving and yield increasing of agriculture.
Keywords:CO2 concentration raising  Plant growth  Water use efficiency
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