广西蚕桑产业生产效率及影响因素研究——基于超效率SBM-Tobit模型

运用超效率SBM-DEA模型对2008—2017年广西12个地市蚕桑产业生产效率进行测算,在此基础上运用面板Tobit模型对广西蚕业生产效率的影响因素进行初步探究。结果表明,广西蚕桑产业生产效率的整体水平偏低;财政支农、蚕茧收购价格、蚕农协会农户数、桑园规模对蚕桑产业生产效率具有正向相关性,养蚕收入和农村居民纯收入对蚕桑产业生产效率具有负向相关性。建议推行技术导向和规模导向型的政策,稳定蚕茧收购价格,制定蚕种投入量与桑叶产量技术标准,推行蚕桑业种养分离模式,优化财政支农支出结构。

Study on production efficiency and influencing factors of sericulture in Guangxi:based on super-efficient SBM-Tobit model

Estimation was made on the production efficiency of sericulture in 12 cities in Guangxi from 2008 to 2017 with super-efficient SBM-DEA model,and preliminary study was conducted on the influencing factors on production efficiency of sericulture in Guangxi with panel Tobit model on this basis.The results show that the overall production efficiency of sericulture industry in Guangxi is low;financial support for agriculture,purchase price of silkworm cocoon,number of peasant households in silkworm farmers association and scale of mulberry plantation have positive correlation with production efficiency of sericulture industry,while income from silkworm rearing and net income of rural residents have negative correlation with production efficiency of sericulture industry.It is suggested to carry out technology-oriented and scale-oriented policies,stabilize the purchase price of silkworm cocoons,formulate technical standards for the input amount of silkworm seeds and the yield of mulberry leaves,implement the separation mode of silkworm and mulberry breeding,and optimize the structure of financial support for agriculture.