农作物产量的DAISY模型

农作物产量的DAISY模型

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Contributor(s)

Initial contribute: 2018-12-04

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Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
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Method-focused categoriesData-perspectiveGeostatistical analysis
Method-focused categoriesProcess-perspectiveHuman-activity calculation

Model Description

Chinese {{currentDetailLanguage}} Chinese

农作物产量的DAISY模型

(1) 在农作物树冠发育早期,光合作用活动农作物面积指数Ila为:

       

式中,Wt为发芽干物质的累积量;为发芽以来的温度总和;均为经验常数。

(2) 分别表示每天最大毛树冠光合作用由于水和氮不足而减少,可表达为:

                

式中,Nc分别是实际氮供应,极低氮供应和充足氮供应中的农作物中的氮量。

(3) 每天潜在氮需求计算如下:

式中,是农作物中的氮的潜在数量。

参考文献:

    Svendsen HHansen SJensen H E:使用DAISY模型,模拟两个德国农业生态系统中的农作物产量,水和氮平衡。EcologicalModelling 199581

How to Cite

《资源环境数学模型手册》 (2018). 农作物产量的DAISY模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/bd6377e5-63dd-41bc-aaff-7af114184a27
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Last modifier : 
wzh
Last modify time : 
2020-11-06
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Contributor

Initial contribute: 2018-12-04

Co-contributor(s)

Authorship

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

History

Last modifier : 
wzh
Last modify time : 
2020-11-06
Modify times : 
View History

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