土地规模化经营对农业生态效率影响及城乡市场分割调节作用探析

土地规模化经营是农业生态效率改善的重要动力,但土地规模化经营作用农业生态效率受到城乡市场分割的门槛调节。该研究借助2001—2017年全国30个地区(因数据缺失,西藏及港澳台地区未涵盖,下同)面板数据,运用面板门槛模型,就城乡市场分割调节土地规模化经营作用农业生态效率过程展开研究。结果表明:(1)我国农业生态效率总体向好,但地区间差异悬殊;(2)土地规模化经营驱动农业生态效率改善,但存在城乡市场分割门槛调节,弱市场分割地区土地规模化经营促进农业生态效率,强市场分割地区作用相反;(3)城乡市场分割调节土地规模化经营作用农业生态效率主要通过限制农产品、劳动力、资本城乡合理流动,削弱农业新型经营主体绿色农业发展意愿和能力途径展开;(4)我国多数地区城乡市场分割水平偏高,区域发展中城市资源偏向和工业优先发展突出,需进行及时改革。该研究可为政府制定绿色农业发展策略提供参考依据。

Analysis Impact of Land Scale Management on Agricultural Eco-efficiency and Regulation of Urban and Rural Market Segmentation

Large-scale land management is an important driving force for the improvement of agricultural ecological efficiency,but the role of large-scale land management in agricultural ecological efficiency is regulated by urban and rural market segmentation.This research studied the adjustment of urban and rural market segmentation during large-scale land management affecting agricultural ecological efficiency using panel data from 30 provinces with panel threshold model.The results showed that,(1)China′s agricultural ecological efficiency was generally better,but the regional differences were large.(2)Large-scale land management drived the improvement of agricultural ecological efficiency,but there was a threshold adjustment for urban and rural market segmentation.Large-scale land management in weak market segmentation areas promoted agricultural ecological efficiency,strong market segmentation had the opposite effect.(3)Urban and rural market segmentation adjust the process land scale operation driving agricultural ecological efficiency mainly weaken the willingness and ability of green agricultural development entities with restricting the rational flow of agricultural products,labor,and capital.(4)The level of urban and rural market segmentation in most provinces was relatively high,and timely reform was needed.This research can provide reference for government to formulate green agricultural development strategies.