Study on Transpiration Rate of Black Locust under Different Soil Water Content in Semi-Arid Region Loess Plateau

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Study on Transpiration Rate of Black Locust under Different Soil Water Content in Semi-Arid Region Loess Plateau

更新时间：2024-11-07

- Study on Transpiration Rate of Black Locust under Different Soil Water Content in Semi-Arid Region Loess Plateau
- Issue 2, Pages: 122-125(2006)
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- Published：2006
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Study on Transpiration Rate of Black Locust under Different Soil Water Content in Semi-Arid Region Loess Plateau[J]. 2006, (2): 122-125.
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Study on Transpiration Rate of Black Locust under Different Soil Water Content in Semi-Arid Region Loess Plateau[J]. 2006, (2): 122-125. DOI：

摘要

2004年夏在山西方山北京林业大学试验基地

采用L I-1600稳态气孔仪

对不同土壤水分条件下盆栽刺槐的生理指标进行了观测。比较分析了不同水势梯度下、不同时间段刺槐蒸腾耗水速率的变化规律

结果表明:刺槐的蒸腾速率tη(μg/(s.cm2))与生理辐射强度I(μm ol/(s.m2))成幂函数关系;蒸腾速率tη(μg/s.cm2))、气孔阻力Rs/(s.cm2)和土壤体积含水量(W%)之间存在着密切的关系;蒸腾速率一般随光强的增强和土壤水分的提高而增大

刺槐蒸腾速率与土壤水分含量的相关系数平均可达0.882 5。通过研究不同土壤水分条件下刺槐蒸腾速率的差异

提出了刺槐水分利用效率的合理供水范围在10%~15%之间

为干旱半干旱地区提高林木的水分利用效率提供了理论依据。

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Study on Transpiration Rate of Black Locust under Different Soil Water Content in Semi-Arid Region Loess Plateau

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