不同兼业程度农户耕地利用行为及其效率研究——基于甘肃、青海两省部分市县的实证分析

Cultivated Land Use Behaviors and Efficiency of Different Part-time Peasants:Based on Empirical Analysis of Gansu and Qinghai Provinces

运用农户模型构建兼业对耕地利用行为及其效率的分析框架,在分离性成立的前提下,以农户调研数据为基础,利用分组比较、数据包络等方法分析不同兼业类型农户之间的耕地利用行为和效率的差异。研究结果表明:兼业类型对农户耕地利用方式和行为选择有显著的影响,不同类型农户的投入、管理行为和土地规模存在较大差异。总体来说,兼业农户的资本投入、劳动投入等高于纯农户,在兼业户中兼业户Ⅱ高于兼业户Ⅰ;不同的耕地利用行为又导致了耕地利用效率的差异,在分离性成立的条件下,数据包络分析计算出的技术效率表现为纯农户大于兼业户Ⅰ,且两者均大于兼业户Ⅱ。

The model of farmer household is used to construct the analytical framework of cultivated land use behaviors and efficiency of concurrent business. Based on the premise of separability, and using the investigation data of farmer households, this paper analyzes the differences of cultivated land use behaviors and efficiency among different part-time peasants, using group comparison analysis and data envelopment analysis （IDEA）. The result demonstrates that the part-time peasants have had a significant influence on the cultivated land use patterns and behaviors, and that great differences exist among different types of farmer investment, management and land scale. Generally speaking, capital and labor input of the part-time peasant households are high than those of pure farmers. Moreover, different land use patterns lead to the differences in cultivated land use efficiency. When separability is established, DEA calculates that technical efficiency is higher in pure farmer households than Class I part-time farmer households, and both of them are higher than Class II part-time farmer households.