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| 苹果树水分指标日变化及水分利用效率的研究 | |
| 引用本文： | 王翠玲,曾峰,狄方坤,张继祥.苹果树水分指标日变化及水分利用效率的研究[J].山东农业科学,2009(4):45-48. |
| 作者姓名： | 王翠玲 曾峰 狄方坤 张继祥 |
| 作者单位： | 1. 山东农业大学园艺科学与工程学院/作物生物学国家重点实验室,山东,泰安,271018 2. 嘉祥县马村镇农技站,山东,嘉祥,272400 3. 嘉祥县林业局,山东,嘉祥,272400 |
| 基金项目： | 国家高技术研究发展计划(863计划)，国家现代苹果产业技术体系功能岗位专家项目 |
| 摘 要： | 本试验实地测量分析了美国8号苹果树水分指标的日变化。结果表明：茎干和叶片的水势早晨较大，中午前后较小，茎水势变化显著滞后于叶水势的变化；茎流量日变化呈“单峰”曲线，最高值出现在午后；蒸腾速率日变化为“双峰”曲线，有明显的“午休”现象；水分利用效率在一天中呈下降趋势，上午下降幅度较大，下午较小；茎流量与水势、蒸腾速率与温度、水分利用效率与光强等不同生理生态指标之间均存在极显著的相关性。 |
| 关 键 词： | 苹果树 水势 蒸腾速率 茎流量 水分利用效率 |
Study on Diurnal Variation of Water Indices and Water Use Efficiency of Apple Trees |
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| WANG Cui-ling,ZENG Feng,DI Fang-kun,ZHANG Ji-xiang.Study on Diurnal Variation of Water Indices and Water Use Efficiency of Apple Trees[J].Shandong Agricultural Sciences,2009(4):45-48. | |
| Authors: | WANG Cui-ling ZENG Feng DI Fang-kun ZHANG Ji-xiang |
| Institution: | 1.College of Horticulture Science and Engineering of Shandong Agricultural University/ State Key Laboratory of Crop Biology;Taian 271018;China;2.Macun Town Station of Agricultural Technology;Jiaxiang 272400;3.Forest Bureau of Jiaxiang County;China |
| Abstract: | It was investigated and analyzed that the diurnal variation of water indices of American 8 apple trees in this experiment.The results showed that the water potential of stem and leaf were higher in the morning and lower around noon;the water potential change of stem lagged significantly behind that of leaf.The diurnal variation of stem flow showed a single-peak curve whose highest value appeared in the afternoon.But the diurnal variation of transpiration rate presented a double-peak curve with typical "lunc... |
| Keywords: | Apple tree Water potential Transpiration rate Stem flow Water use efficiency |
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