增产增收视角下玉米种植户适度规模分析——基于全国8423份调查数据

Moderate scale for the corn-planting farmer from the perspective of increasing food production and increasing farmers' income: Based on 8423 national investigation data

基于全国农村固定观察点8423个玉米种植农户2010年的调查数据，采用Tobit回归模型估计，分别估计了粮食经营规模与粮食单产、农民收入之间的关系，并从促进粮食增产和农民增收视角对土地适度规模进行探讨。结果显示：粮食经营规模与粮食单产水平存在倒U型相关关系，土地经营规模与农民收入呈正相关；根据粮食单产水平和农民收入的变化，土地规模经营可划分为五个规模区间，当前中国玉米种植农户的适度规模应在87～142亩之间。

Using 8 423 corn-planting households survey data of the national rural fixed point in the year 2010, we estimated the relationship between grain size and grain yield, and the relationship between grain size and the farmers＇ income. We discuss the moderate scale of land under the perspective of increase food production and increase farmers＇ income. The results show： the grain size and grain yield has an inverted U-shape relationship, and the land scale has a positive correlation withthe farmers＇ income. Subsequently, we divided the five-scale range according to the changes in grain yields and farmers＇ income. Finally, we proposed the moderate scale for the corn-planting farmers are from 87 mu to 142 mu.