农作物减产量的计算公式

农作物减产量的计算公式

  45

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

Classification(s)

Earth System SubjectEarth Surface SystemAnthroposphere
Geography SubjectHuman GeographyAgricultural Geography

Detailed Description

农作物减产量的计算公式

       

式中,为农作物因灾减产量(kg);D为减产幅度,按照自然灾害统计中成灾减产三成、五成、五成至八成、八成以上至绝收的等级划分,D1D2D3分别取0.3~0.5,0.5~0.8,0.8~1.0的中值;A1A2A3为对应不同D值的农作物成灾面积,取累年的平均值;M为累年农作物播种面积平均亩产。

参考文献:

陈晋,李强:内蒙古农牧交错带农业灾情及其动态变化研究。自然资源学报,1993,84

How to cite

《资源环境数学模型手册》 (2018). 农作物减产量的计算公式, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/bbba528f-df9b-466c-9fe3-666a8cd3b99b
Copy

QR Code

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

QR Code

You can link related {{typeName}} from your personal space to this model item, or you can create a new {{typeName.toLowerCase()}}.

Model Content & Service

These authorship information will be submitted to the contributor to review.