| 不同土壤含水量对山杏盆栽幼苗蒸腾速率和光合速率的影响 |
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| 引用本文： | 王红,王百田,王婷,张东东,付汝军.不同土壤含水量对山杏盆栽幼苗蒸腾速率和光合速率的影响[J].北方园艺,2010(2):1-5. |
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| 作者姓名： | 王红 王百田 王婷 张东东 付汝军 |
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| 作者单位： | 北京林业大学,教育部水土保持与荒漠化防治重点实验室,北京,100083;北京林业大学,教育部水土保持与荒漠化防治重点实验室,北京,100083;北京林业大学,教育部水土保持与荒漠化防治重点实验室,北京,100083;北京林业大学,教育部水土保持与荒漠化防治重点实验室,北京,100083;北京林业大学,教育部水土保持与荒漠化防治重点实验室,北京,100083 |
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| 基金项目： | 国家科技支撑计划专题研究资助项目(2006BAD03A0301) |
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| 摘 要： | 以盆栽山杏为试材,人为控制土壤含水量,采用LI-1600稳态气孔仪和LI-6400便携式光合测定仪对不同土壤含水量的盆栽山杏生理指标进行观测,研究土壤含水量对山杏蒸腾速率与光合速率的影响。结果表明:不同土壤含水量条件下山杏蒸腾速率、光合速率和水分利用效率的日变化差异显著。当土壤体积含水量在7%以下时,山杏气孔导度很低,蒸腾速率日变化也不明显。当体积含水量为12%时,蒸腾速率、光合速率和水分利用效率随着土壤水分的增加而升高,而且日变化明显。土壤含水量越低,山杏叶片气孔导度与蒸腾速率和光合速率的相关性越差。通过对比,山杏光合作用适宜土壤体积含水量为17%左右,该状态下山杏的水分利用效率达到最佳。
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| 关 键 词： | 山杏 蒸腾速率 光合速率 土壤含水量 |
Effects of Different Water Moisture on Photosynthesis and Transpiration of Potted Prunus sibirica Seedlings |
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| WANG Hong,WANG Bai-tian,WANG Ting,ZHANG Dong-dong,FU Ru-jun.Effects of Different Water Moisture on Photosynthesis and Transpiration of Potted Prunus sibirica Seedlings[J].Northern Horticulture,2010(2):1-5. |
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| Authors: | WANG Hong WANG Bai-tian WANG Ting ZHANG Dong-dong FU Ru-jun |
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| Institution: | Beijing Forestry University;Key Laboratory of Soil and Water Conservation and Desertification Combating;Ministry of Education;Beijing 100083 |
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| Abstract: | We investigated the physiological indicators of Prunus sibirica under the different condition of controlled soil water content,by portable steady porometer(LI-1600)and portable photo synthesis system(LI-6400),with potted Prunus sibirica seedlings as experimental materials.The effects of soil water ontranspiration rate and photo synthesis rate of Prunus sibirica were studied.The results showed that there were obvious differences among transpiration rate,photo synthesis rate and water use efficiency of Prunus... |
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