Research on the Source of Grain Output Growth Based on SFA Model

This article has estimated the stochastic frontier production function of grain farming through building a parallel data model. It has divided the growth source of grain output into factor input, technical progress and technical efficiency. The research indicates that the growth of the grain output in Hubei during the period from 1980-2005 mainly derived from agricultural technical, following was the improvement of technical efficiency, and the 3rd was the input of material expenditure. Another was also found that the lower technical efficiency suffered from the insufficient derived demand of the technology substituting for labor, Hubei grain farmers are not ldquopoor but efficientrdquo.