| 摘要: |
| 晴天不同水分胁迫条件下冬小麦田冠层温度的日变化特征分析表明,夜间干旱麦田与湿润麦田冠层温度无明显差别,而白天湿润麦田冠层温度明显低于干旱麦田;因为一天中12时至14时不同水分条件麦田间冠层温度的差别最大,此时的冠层温度和叶水势指标值最能反映土壤的最大供水能力和麦田水分胁迫的严重程度。因此,此时段是利用一次观测资料代表全天情形的最佳观测时间。 |
| 关键词: 冠层温度 水分胁迫 日变化 冬小麦 |
| DOI： |
| 投稿时间：1993-08-24 |
| 基金项目:自然科学基金 |
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| Differences of Diurnal Changes in Canopy Temperature of Winter Wheat under the Water Stress Condition |
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| Abstract: |
| The diurnal courses of winter wheat canopy temperature on differentially irrigated plots were determined for two clear days.It was shown that the post-sunset canopy temperature reading were not appreciably different among plots,despite the widely different levels of soil water content,but,in the daytime,the canopy temperature of wet plots was obviously lower than that of dry plots.Because the biggest difference of canopy temperature values between wet and dry plots occurred in between twelve and fourteen,th... |
| Key words: canopy temperature crop water stress diurnal changes winter wheat |
