| 新型抗蒸腾叶面肥对刺槐水分利用效率的影响 |
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| 引用本文： | 曹晓霞,郭建斌,李文斌,陈明,秦玲玲.新型抗蒸腾叶面肥对刺槐水分利用效率的影响[J].亚热带水土保持,2010,22(3):20-23,27. |
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| 作者姓名： | 曹晓霞 郭建斌 李文斌 陈明 秦玲玲 |
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| 作者单位： | 1. 水土保持与荒漠化防治教育部重点实验室,北京林业大学水土保持学院,北京,100083
2. 华中科技大学环境科学与工程学院,湖北,武汉,430074 |
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| 摘 要： | 采用盆栽法安排试验,在充分供水的条件下,用不同叶面肥对刺槐进行处理,使用LI-6200便携式光合仪、美制LI-1600稳态气孔计分别测定刺槐苗木叶片净光合速率(Pn)、蒸腾速率(Tr)等水分生理指标及其相应的环境因子,结果表明:①不同叶面肥处理下,刺槐的净光合速率、蒸腾速率日变化都呈"双峰"曲线,而且,净光合速率日变化曲线存在光合午休现象。刺槐的水分利用效率在8:00左右最大,14:00点达到一天中的最低水平。②方差分析表明:3号叶面肥处理过的刺槐水分利用效率最大,清水对照的刺槐水分利用效率最小。
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| 关 键 词： | 叶面肥 刺槐 光合速率 蒸腾速率 水分利用效率 |
Impact of New Type Anti-transpirant Foliar Fertilizer on the Water Use Efficiency of Robinia pseudoacacia |
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| Cao Xiaoxia,Guo Jianbin,Li Wenbin,Chen Ming,Qin Linlin.Impact of New Type Anti-transpirant Foliar Fertilizer on the Water Use Efficiency of Robinia pseudoacacia[J].Subtropical Soll and Water Conservation,2010,22(3):20-23,27. |
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| Authors: | Cao Xiaoxia Guo Jianbin Li Wenbin Chen Ming Qin Linlin |
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| Institution: | Cao Xiaoxia,Guo Jianbin,Li Wenbin ＆ Chen Ming(Key Laboratory of Soil and Water Conservation ＆ Desertification Combating of Ministry of Education,Soil Conservation College of Beijing Forestry University,Beijing,10083,P.R.China) Qin Linlin(Environmental Science ＆ Engineering College,Huazhong Science and Technology University,Wuhan,Hubei Province,430074,P.R.China.) |
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| Abstract: | By using the pot method,the tests were conducted to Robinia pseudoacacia with different foliar fertilizers under conditions of sufficient water supply.The LI-6200 portable photosynthesis system and LI-1600 steady porometer were used to measure the net photosynthetic rate（Pn）,transpiration rate（Tr） of Robinia pseudoacacia and their environmental factors so as to get the water use efficiency（WUE） indicators by Pn/Tr.The results show that（1） net photosynthetic rate（Pn） and transpiration rate（Tr） had two peaks at respectively in a day,under the treatment of different foliar fertilizer density with midday depression phenomenon.WUE＇s maximum is at 8：00 and its minimum is at around 14：00.（2） the analysis of variance showed that when used the number 3 foliar fertilization,WUE reached the highest,while WUE of comparison was the minimum. |
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| Keywords: | foliar fertilizer Robinia pseudoacacia net photosynthesis rate transpiration rate water use efficiency（WUE） |
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