基于拓展型灰色绝对关联度的河南省小麦科技进步贡献率测算

Technology Progress Contribution Rate Calculation of Wheat in Henan Province Based on the Extended Grey Relation Degree

C-D生产函数的几种参数估计方法中,主观偏好和模型的选择对投入要素的弹性系数存在很大的影响。本文将拓展型索洛余值法和灰色关联度结合起来,将河南省小麦作为研究对象,从产出和投入要素序列之间的相似性角度出发,测算出劳动力的弹性系数为-0.31,物质费用的弹性系数为0.50,人均耕地面积的弹性系数为0.70,农业受灾比例的弹性系数为0.10,科技进步贡献率则达到57.61%。

In the methods of parameter estimation by Cobb-Douglas production function,the subjectivism has a significant impact on the elastic coefficient of inputs.Different model will lead to different results.The Solow residual method and the extended grey correlation degree are combined in this paper.It is from the perspective of similarity to analyze between input-output variable sequences,which puts the wheat in Henan province as the research object.The results show that the elasticity coefficient of labor is 0.31,the value of material cost modulus is 0.50,where the per capita arable area'point arrives 0.70,Agricultural disaster elasticity ratio is 0.10.Technological advancement contribution rate reaches 57.61%.