中文摘要：

借助DEA模型,系统地分析了2001-2011年中原经济区农业生产效率,并将之分解为纯技术效率和规模效率,探讨农业效率的时空特征及其演变因素.研究发现：（1）综合效率总体上处于中低层次,存在较大的区域差异.（2）研究时段总体上下波动明显;综合效率、纯技术效率变异系数变化波动性较为显著,且二者变化趋势较为一致.（3）综合效率受纯技术效率和规模效率共同作用;纯技术效率对综合效率的影响及制约能力略强于规模效率.（4）规模效率整体较高,且分布较为均衡.（5）中原经济区目前大多数县域单元处于规模报酬递减阶段.

英文摘要：

This paper measured agricultural efficiency of Central Plains Economic Zone in 2001-2011 using the method of data envelopment analysis（DEA）.Then it classified the agricultural efficiency into categories,pure technological efficiency and scale efficiency for exploring the spatial and temporal characteristics of the agricultural efficiency and its evolution factors.The results suggest the following.（1）The overall efficiency of the whole is in the low-level,and there are large regional differences.（2）Overall study period fluctuated significantly;the coefficients of variation of the overall efficiency and pure technical efficiency have more significant changes,exhibiting the consistent trend.（3）Pure technical efficiency and scale efficiency of combined action in the overall efficiency.Pure technical efficiency of the overall efficiency is slightly stronger than the scale efficiency.（4）Scale efficiency is higher,and more balanced distribution.（5）Most of the efficiency of agricultural production is in the stage of decreasing returns to scale in Central Plains Economic Zone.