| 冬小麦叶片水分利用生理机制的研究 |
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| 引用本文： | 高延军,张喜英,陈素英,董宝娣. 冬小麦叶片水分利用生理机制的研究[J]. 华北农学报, 2004, 19(4): 42-46 |
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| 作者姓名： | 高延军 张喜英 陈素英 董宝娣 |
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| 作者单位： | 1. 中国科学院遗传发育所农业资源研究中心,河北,石家庄,050021;中国科学院研究生院,北京,100039
2. 中国科学院遗传发育所农业资源研究中心,河北,石家庄,050021 |
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| 基金项目： | 中国科学院知识创新项目(KZCX SW 317 02) |
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| 摘 要： | 在8种土壤水分梯度下，对盆栽冬小麦旗叶叶片水分利用效率与土壤水分含量的关系进行了连续的测定，结合大田条件，对冬小麦旗叶的光响应曲线和CO2响应曲线进行了测定，结果表明，旗叶叶片水平水分利用效率与光强、蒸腾速率、胞间CO2浓度和气孔导度关系密切，旗叶叶片水平水分利用效率在土壤水分含量、光强和CO2浓度等环境因子方面存在一定的临界值。
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| 关 键 词： | 冬小麦 旗叶 叶片水分 土壤水分含量 水分利用效率 CO2浓度 生理机制 土壤水分梯度 光强 气孔导度 |
| 文章编号： | 1000-7091(2004)04-0042-05 |
Physiological Mechanism of Leaf Water Use of Winter Wheat |
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| GAO Yan-jun. Physiological Mechanism of Leaf Water Use of Winter Wheat[J]. Acta Agriculturae Boreali-Sinica, 2004, 19(4): 42-46 |
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| Authors: | GAO Yan-jun |
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| Affiliation: | GAO Yan-jun~ |
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| Abstract: | The pot experiments were conducted in greenhouse under different soil moisture contents to analyses the response of flag leaf water use efficiency of winter wheat to soil moisture contents. Combining the field conditions, the relationships between flag leaf water use efficiency, light intensity, concentration of CO_2 and the photosynthetic rate, stomatal conductance, interstellar CO_2 concentration and transpiration rate of winter wheat were determined. The results indicated there was a close relationship of flag leaf water use efficiency with the determined physiological factors, and flag leaf water use efficiency had a critical value of soil moisture contents, light intensity, and concentration of CO_2. |
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| Keywords: | Winter wheat Water use efficiency Physiological mechanism. |
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