| 富水条件下不同供氮水平对小麦光合作用与空气温湿度关系的影响 |
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| 引用本文： | 李卫民,张佳宝,张俊华.富水条件下不同供氮水平对小麦光合作用与空气温湿度关系的影响[J].土壤通报,2008,39(3). |
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| 作者姓名： | 李卫民 张佳宝 张俊华 |
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| 作者单位： | 中国科学院南京土壤研究所,江苏,南京,210008 |
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| 基金项目： | 国家重点基础发展规划项目 |
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| 摘 要： | 对田间环境土壤富水条件下不同供氮处理小麦光合速率、蒸腾速率、叶片水分利用率和气孔导度的分析测定表明,增施氮肥有助于扩大高光合速率分布的空气温湿度范围,显著抑制高温低湿对叶片蒸腾的促进作用,提高叶片水分利用率,提高叶温。土壤富水条件下,合适的施氮量应在90～180kg hm-2之间。
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| 关 键 词： | 氮素 小麦 光合作用 气温 相对湿度 |
Effects of Nitrogen Supply under Waterlogging on the Relationship b.etween Photosynthesis of Wheat and Air Temperature and Humidity |
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| LI Wei-min,ZHANG Jia-bao,ZHANG Jun-hua.Effects of Nitrogen Supply under Waterlogging on the Relationship b.etween Photosynthesis of Wheat and Air Temperature and Humidity[J].Chinese Journal of Soil Science,2008,39(3). |
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| Authors: | LI Wei-min ZHANG Jia-bao ZHANG Jun-hua |
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| Abstract: | Under the condition of high soil water content(0.27g g-1),increasing nitrogen nutrition improved WUE and leaf temperature and also improved the higher Pn region of air temperature and humidity.Meanwhile,increasing nitrogen nutrition suppressed E.Nitrogen rate between 90 and 180kghm-2 should be the Surtable nitrogen supply under the condition of soil water content of 0.27g g-1. |
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| Keywords: | Nitrogen Winter wheat Photosynthesis Air temperature Air humidity |
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