| 冬小麦、夏玉米水分胁迫监测系统 |
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| 引用本文： | 杨晓光,于沪宁. 冬小麦、夏玉米水分胁迫监测系统[J]. 中国生态农业学报, 2000, 8(1): 27-29 |
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| 作者姓名： | 杨晓光 于沪宁 |
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| 作者单位： | 1. 中国农业大学资源与环境学院 北京 100094
2. 中国科学院地理研究所 北京 100101 |
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| 基金项目： | “八五”国家自然科学基金重大项目(49391600)研究内容 |
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| 摘 要： | 根据冬小麦、夏玉米田间试验结果分析了作物水分胁迫判别指标叶水势、冠层温度-气温差变化规律，在充分考虑判别指标随作物发育期变化的特征基础上，提出了叶水势、冠层温度-气温差反映土壤相对含水量的指标，并建立了作物水分胁迫监测系统，对指导生产实践具有一定作用。
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| 关 键 词： | 水分胁迫 叶水势 冠层温度-气温差 |
| 收稿时间： | 1999-08-16 |
| 修稿时间： | 1999-08-16 |
The water stress detection system of winter wheat and summer maize |
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| Yang Xiao-guang and Yu Hu-ning. The water stress detection system of winter wheat and summer maize[J]. Chinese Journal of Eco-Agriculture, 2000, 8(1): 27-29 |
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| Authors: | Yang Xiao-guang and Yu Hu-ning |
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| Affiliation: | China Agricultural University, Beijing 100094;Geographical Institute, CAS,Beijing 100101 |
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| Abstract: | Based on the field experimental data of winter wheat and summer maize, the variation of leaf water potential and canopy-temperature discrepancy was an alyzed and used as the index of water stress.This index could vary with growing season and the characteristics of variation was considered. The relationship be tween leaf water potential, canopy-temperature discrepancy and soil water conte nt was found, and then the detection system of crop water stress was set up. |
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| Keywords: | Water stress Leaf water potential |
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