既定土地经营规模约束下劳动努力的农业高质量增长效应

既定土地经营规模约束下,非农收入逐渐成为农户的主要收入来源,改变了农 业劳动力的劳动努力及其对农业增长质量的贡献.通过构建包含劳动努力的农业生产函 数,将劳动努力对农业增长质量的贡献分离出来并加以估算.结果显示,１９８５－２０１６年农 业劳动力的劳动努力推动农业增长质量提高了７２．５％,解释了同期农业增长质量增长的 ４１．８％;期间劳动努力对农业增长质量增长的贡献份额呈逐渐下降趋势,但下降趋势趋向减 缓.总体上体现出经济发达地区劳动努力对农业增长质量增长的贡献份额下降幅度较大, 而经济落后地区或农业大省劳动努力对农业增长质量增长的贡献份额下降幅度较小.据此 建议促进土地经营权转让或交换,扩大农户土地经营规模,以提高其劳动努力和农业高质量 增长的经济激励.

The Labor Effort Effect on Agricultural High Quality Growth Under the Restriction of the Household Land Holding

With the restriction of the household land holding,the non agricultural income has gradually become the main income of the rural household,which reduces the labor effort and its contribution to the agricultural high quality growth.Based on the agricultural production function with the labor effort,the contribution of the labor effort to the quality of agricultural growth is estimated after it being isolated from other factors.The results show the labor effort under the restriction of the land holding makes 72.5% of the contribution to the improvement of agricultural high quality growth from 1985 to 2016,which accounts for 41.8% of the agricultural quality growth in the same period and shows a gradual decline,but the decline rate tends to slow down.In general,this decline is more dramatic in developed regions,while in developing regions or large agricultural provinces it is just the opposite.Therefore,it is suggested to promote the transfer or exchange of land management rights,expand the land area of the household and improve their labor effort,so as to increase the market power of high quality agricultural development.