基于“M-L”模型东北生猪规模结构波动效应研究

Study on hogs' productivity ripple effect in northeast China based on "M-L" model

为探究东北地区不同生猪养殖规模结构波动效应,完善东北地区生猪养殖短板,基于2004-2014年东北三省四种生猪养殖主体,即散户、小规模、中规模和大规模面板数据,利用Malmquist指数法测算各养殖主体生产效率及其构成,通过LMDI模型得出生产效率增长率,从数值和增长率波动趋势分析影响东北地区生猪有效供给主要因素。研究表明,技术进步对东北地区规模化生猪养殖主体有效供给作用强度最大;东北地区散户生猪有效供给主要影响因素不同;东北地区已具备规模化生猪养殖条件;东北三省各自生猪优势养殖规模不同。

For exploring main factors influencing effective supply of different scale hog-breeding and improving the hog- breeding in northeast China, this paper measures production efficiency and its components by Malmquist index and obtains the growth rate of productivity efficiency by LMDI model based on the data of hogs＇ main product output, by-product value, direct costs, indirect costs and labor cost from2004 to 2014 four scale hog-breeding： retail, small-scale, medium-scale and large-scale. Then analyze the main factor influencing production efficiency from two aspects of value and fluctuation trend. The results showed that technological progress was the main factor in northeast scale hog-breeding productivity growth;the main factors affecting productivity of retail in different regions is different; from the average, the productivity of scale hog farming was higher than the retail in northeast; moderate hog scale farming of northeast three provinces were different.