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Position: Home > Articles > 不同滴灌定额对红枣净光合速率和蒸腾速率的影响 Journal of Tarim University 2013,25 (2) 37-42

不同滴灌定额对红枣净光合速率和蒸腾速率的影响

作  者:
王龙;张旭贤;姚宝林;李发永
单  位:
塔里木大学水利与建筑工程学院
关键词:
滴灌定额;红枣;净光合速率;蒸腾速率;水分利用效率
摘  要:
针对不同滴灌定额对红枣净光合速率和蒸腾速率的影响进行了研究.结果表明,红枣冠层叶片的净光合速率和蒸腾速率与灌水定额有一定的相关关系;滴灌前后蒸腾速率的变化和净光合速率的变化相似,随着灌水定额增大红枣净光合速率和蒸腾速率也越大;全日内红枣净光合速率呈现双峰曲线,而蒸腾速率则没有相似的特征;净光合速率的大小并不与水分利用效率完全一致;通过对各处理全日内平均水分利用效率的对比发现,处理3(即灌水定额为135 m3/hm2,灌溉定额1 350 m3/hm2)平均水分利用效率最大.
单  位:
College of Water Resource and Architectural Engineering,Tarim University,Alar,Xinjiang 843300
关键词:
irrigation quota%jujube%net photosynthetic rate%transpiration rate%water use efficiency
摘  要:
This text has studied on jujube's net photosynthetic rate and transpiration rate under different drip irrigation quota.The results showed that there had certain relationship between net photosynthetic rate and transpiration rate with irrigation quota.Change of transpiration rate and net photosynthetic rate after drip irrigation were similar to before drip irrigation.As the irrigation quota increased,jujube's net photosynthetic rate and transpiration rate also increased.Net photosynthetic rate showed a bimodal curve within a day.But transpiration rate hadn't similar characteristics.The size of the net photosynthetic rate did not fully consistent with the efficiency of water use.Found by comparison of average water use efficiency for each treatment within a day,Treatment 3(irrigation quota 135 m3/ hm2,the irrigation norm 1 350 m3/ hm2) has a biggest of average water use efficiency.

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