粮食产量及粮食产量变率计算公式

粮食产量及粮食产量变率计算公式

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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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Earth System SubjectEarth Surface SystemAnthroposphere
Geography SubjectHuman GeographyAgricultural Geography

Detailed Description

粮食产量及粮食产量变率计算公式

(1) 粮食产量计算公式:

 

            

           

式中,Y为粮食产量;f(Q)f(T)f(W)f(S)f(M)分别为辐射、温度、降水、土壤特性和农技措施对产量影响地订正系数;f(I)为作物固有的生物特性所决定的粮食产量基础;R为降水量;ET0为潜在蒸散;C为径流系数;T为作物生育期间的平均温度;Tm分别为作物生育所需的上、下极限温度。

(2) 粮食产量变率计算公式:

式中,下标1,2分别代表2种不同气候情节;R为降水。

参考文献:

    郭建平:气候变化对我国东部地区粮食产量的影响初探。地理研究,1992,111

How to cite

《资源环境数学模型手册》 (2018). 粮食产量及粮食产量变率计算公式, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/70a96381-1a30-4f72-8d9c-b3067525108c
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Contributor

contributed at 2018-12-04

Authorship

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

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