作物水分利用效率模型

作物水分利用效率模型

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contributed at 2018-12-04

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Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
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Application-focused categoriesNatural-perspectiveLand regions
Application-focused categoriesHuman-perspectiveEconomic activities
Application-focused categoriesIntegrated-perspectiveRegional scale

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Chinese {{currentDetailLanguage}} Chinese

作物水分利用效率模型

                   

式中,ET为全生育期蒸散量,即耗水量;Y=f(ET)为经济产量。

       对上式两边求导数并整理得:

                

式中,为作物十分生产弹性系数(elasticity ofcrop water production);当时,ET增加而增加,繁反之,当时,ET增加而减小;当时,YET增加而增加,反之,当时,YET增加而减小;当分别等于10时,Y分别取得最大值(如果曲线Y=f(ET)下凹,或先上凸后下凹);当恒等于1,不醉ET变化,则表明为常数。

参考文献:
   刘文兆:作物生产、水分消耗与水分利用效率间的动态联系。自然资源学报,1998,131

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How to Cite

《资源环境数学模型手册》 (2018). 作物水分利用效率模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/3f1699ec-c93b-4248-b7b0-538dc464fd7d
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Last modifier : 
Zihuan Wang
Last modify time : 
2020-11-07
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Contributor(s)

Initial contribute: 2018-12-04

Authorship

Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
Homepage:  
View
Is authorship not correct? Feedback

History

Last modifier : 
Zihuan Wang
Last modify time : 
2020-11-07
Modify times : 
View History

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