农业化肥氮磷钾需求比例分析模型

农业化肥氮磷钾需求比例分析模型

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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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Earth System SubjectEarth Surface SystemAnthroposphere
Geography SubjectHuman GeographyAgricultural Geography

Detailed Description

农业化肥氮磷钾需求比例分析模型

       1)“模拟农作物”的单产量:

                    

式中,Qm为“模拟农作物”的单产Qi为每种主要农作物的单产pi为权重系数;i为农作物种类的代号;n为主要农作物种类数。

2)每公顷播种面积的土壤所提供的养分量:

             

式中,Si为土壤供应的养分Ci为农作物吸收的养分Oi为有机肥供应的养分Fi为化肥供应的养分i为养分种类(氮、磷和钾)的代号。

参考文献:

    陈同斌,陈世庆,徐鸿涛等:中国农业化肥氮磷钾需求比例的研究。地理学报,19983,51

How to cite

《资源环境数学模型手册》 (2018). 农业化肥氮磷钾需求比例分析模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/b053697c-2c15-4ac9-b6e5-852c61b87f4a
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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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