技术进步对粮食单产的影响是线性的么?——基于非线性视角的验证

Is the Influence of Technological Progress on Grain Yield per Unit Area Linear?--A Verification from Non-linear Perspectives

本研究放宽了技术进步对粮食单产线性影响的假设,验证了非线性条件下技术进步对粮食产量的影响。研究发现:技术进步与水稻、小麦以及玉米粮食作物单产水平之间是由技术进步水平分隔的分段函数;技术进步对三种粮食作物单产水平的非线性影响在由两个门限值所划分的三个区间内都具有正向的影响,其中对水稻单产的影响表现出"L"型的轨迹特征,对小麦和玉米单产的影响表现出"∩"型的轨迹特征。要通过提高技术进步与粮食生产之间的耦合度实现协调发展,尤其要重视在要素层面提高技术进步与粮食生产的匹配关系,进一步发挥技术进步对粮食生产的提高作用。

This study relaxed the assumption of the linear effect of technological progress on grain yield per unit area and verified the effect of technological progress on grain yield under non-linear conditions. The study found that the relationship of technical progress and rice,wheat and maize grain yield per unit area is divided by the level of technological progress,and the non-linear effect of technological progress on the yield per unit area of three kinds of food crops has positive effect in three intervals divided by two threshold values,effects on rice yield showed the trajectory characteristics of the " L" type,and effects on wheat and maize grain yield showed the trajectory characteristics of the " ∩" type. We should improve the matching relation between technological progress and grain production at the level of elements,and give fuller play to the role of technological progress in improving grain production.