玉米生长条件下农田土壤水分动态预报模型

玉米生长条件下农田土壤水分动态预报模型

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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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Classification(s)

Earth System SubjectEarth Surface SystemAnthroposphere
Geography SubjectHuman GeographyAgricultural Geography

Detailed Description

玉米生长条件下农田土壤水分动态预报模型

(1) 土壤水分运动基本方程:

    

式中,θ为土壤容积含水率;t为时间;z为垂直坐标,以土壤表面为参考面,向下为正;D(θ)为土壤水分扩散率;k(θ)为土壤导水率;S(z,t)为作物根系吸水率。

(2) 玉米根系吸水模式:

式中,ET(t)t时刻玉米的实际蒸发蒸腾率;Zr为玉米根系层深度;为玉米冠层叶面积指数。

(3) 玉米蒸发蒸腾模型:

         

式中,kc(t)Kw(t)分别为t时刻的作物系数和土壤水分修正数;ET0(t)为由气象因素计算的参考作物蒸发蒸腾。

参考文献:

    康绍忠,张富仓,梁银丽:玉米生长条件下农田土壤水分动态预报方法的研究。生态学报,1997,173

How to cite

《资源环境数学模型手册》 (2018). 玉米生长条件下农田土壤水分动态预报模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/1527f3a6-efc6-462e-83e5-7c518b39e628
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Contributor

contributed at 2018-12-04

Authorship

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

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