耕地流转对农户水稻生产成本效率的影响研究

Impact of Cultivated Land Transfer on Rice Farmers' Cost Efficiency

揭示在完全竞争要素市场和不完全竞争要素市场条件下,耕地流转对农户水稻生产成本效率的影响。通过构建柯布—道格拉斯成本函数模型,利用武汉都市圈393份水稻种植户调查数据对研究假说进行验证。结果表明:样本农户的平均成本效率为0.768,仍有23.2%的进步空间;转入户的成本效率比非转入户高5.54%,其中转入规范户的成本效率比非转入户高12.93%,转入不规范户的成本效率比非转入户高3.30%;转入户的成本效率与耕地经营规模存在正向关系,其中转入规范户的成本效率与耕地经营规模存在正向关系,转入不规范户的成本效率与耕地经营规模存在倒"U"型关系。

This paper firstly analyzed the impact of cultivated land transfer on rice farmers' cost efficiency under the conditions of perfectly and imperfectly competitive markets,and then an empirical study was carried out based on stochastic frontier cost function and survey data collected from 396 rice farmers in Wuhan Metropolitan.The results indicated that the mean cost efficiency of sample farmers was 0.768,still leaving 23.2% room for improvement.The cost efficiency of tenants was 5.54% higher than that of those hadn't transferred their cultivated land,and the cost efficiency of standard tenants was 12.93% higher than that of those hadn't transferred their cultivated land,while the cost efficiency of non-standard tenants was 3.30% higher than that of those hadn't transferred their cultivated land. There was a positive relationship between the cost efficiency of tenants and cultivated land operation scale,and there was a positive relationship between the cost efficiency of standard tenants and cultivated land operation scale,while there was an inverted U-shaped relationship between the cost efficiency of non-standard tenants and cultivated land operation scale.