EVALUATION OF AGRICULTURAL PRODUCTIVITY IN CHINA BASED ON INPUT-OUTPUT
使用数据包络分析（DEA）评估2008年中国31个省份的农业生产效率，发现北京等6省市达到最优规模，其余26个省市因投资结构不合理导致生产力较低。
The application of Data Envelopment Analysis(DEA) in economic system is virtually probing resource allocation problems.The study employs DEA theory to evaluate agricultural production efficiency of 31 provinces and cities in China in 2008.Via empirical study on input-output data of agricultural production,this paper concludes that Beijing and five other provinces have reached the optimal scale of agricultural production and their investment structure is effective as well;Due to investment in agricultural production structure is not reasonable,26 other provinces and cities are still relatively low in agricultural productivity.Overall,two-oriented society agriculture degree of agricultural production in China is not very high,scale efficiency and technical efficiency need to be improved,to further increase investment in agricultural technology and modernization.