小麦种子投入替代弹性度量分析

Metrics analysis of substitution elasticity of wheat seed input

近年来,随着供给侧结构性改革的深入,小麦需求已由数量型向质量型转变,小麦种子改良可使生产质量大幅提升。以种子作为切入点,基于2005—2020年14个小麦主产区的各指标面板数据,采用超越对数成本函数模型,对小麦种子要素的需求价格弹性、替代弹性进行测算并分析各主产区差异。

In recent years,with deepening of supply side structural reform,wheat demand has shifted from quantity based to quality based.Improvement of wheat seeds can significantly enhance production quality.Using seeds as a starting point,based on panel data of various indicators from 14 major wheat producing areas from 2005 to 2020,a transcendental logarithmic cost function model was adopted to calculate demand price elasticity and substitution elasticity of wheat seed factors,and analyze differences among major wheat producing areas.