农地流转对粮食生产投入产出的冲击效应
An Empirical Study on Relationship Between Farmland Circulation and Grain Planting

基于我国粮食主产区4省14县835户农户调查数据,运用二阶段回归及比较均值独立样本检验深入分析了农地转入行为对农户粮食生产投入产出的冲击效应。研究结果表明:在不考虑土地租金的情况下,农地转入行为使农户粮食生产中流动资本投入增加,劳动时间投入减少;从产出角度来看,农地转入户的粮食单产更高,且小麦亩产增加明显。转入户通过农地流转实现了规模经营,在提高资源配置效率及粮食增产方面效果显著。要保障国家粮食安全,政府应鼓励经营土地面积在25亩以上的转入户种植粮食作物,全面提高粮食生产的机械化水平,完善粮食补贴政策,限制农地流转价格快速上涨。
Based on 835 households’ survey data in 4 grain producing provinces, this paper analyzes how farmland circulation behavior affect the households’ inputs and outputs in grain planting with the two stage regression and comparing mean test. The results show that, without considering the land rent, farmland circulation behavior increases farmers’ flowing capital investment and decreases their labor investment. From the angle of output, we can find that the yield of grain per unit area of land flowing into households is higher, and as to the wheat, the increase is more significantly. Farmland circulation help farmers realize the scale operation, it reallocates the resources and improves the grain production. To ensure the national food security, our government should encourage farmers who have land more than 1.7 ha. to plant grain, raise the mechanization level and improve the grain subsidy policy.