麦田蒸腾需水量公式

麦田蒸腾需水量公式

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contributed at 2018-12-04

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Affiliation:  
岳天祥编著
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yue@lreis.ac.cn
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Earth System SubjectEarth Surface SystemAnthroposphere
Geography SubjectHuman GeographyAgricultural Geography

Detailed Description

麦田蒸腾需水量公式

       若作物需水量被定义为充分湿润时(土壤水分能力完全满足作物的需水要求),气孔充分开启,气孔阻力达到最小时的作物蒸腾量,则作物蒸腾需水量CWR(mm)可表达为:

           

式中,为冠丛总的最小气孔阻力L为汽化潜热;ρ干空气密度Cp为空气定压比热;γ干湿球常数,它们均为常数;D为冠层上空气的饱和差(hPa);Δ为饱和水汽压随温度变化的斜率;他们可根据田间小气候观测中的气温和湿度观测计算求得。

参考文献:

    谢贤群,吴凯:麦田蒸腾需水量的计算模式。地理学报,1997,526

How to cite

《资源环境数学模型手册》 (2018). 麦田蒸腾需水量公式, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/1397007d-a050-4722-99c4-9bea05156758
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contributed at 2018-12-04

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Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
Homepage:  
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