作　　者： (杨肖）; (钟方雷）; (郭爱君）;

机构地区： 兰州大学经济学院,甘肃兰州730000

出　　处： 《干旱区地理》 2017年第4期913-919,共7页

摘　　要： 绿洲农业是中国西北干旱区农业的精华,面临自然要素稀缺和生态环境脆弱的双重限制。基于制种玉米种植农户数据,在采用数据包络分析法(DEA)测算生产效率的基础上,依据测算结果对冗余投入要素进行改进模拟,得出以下结论:该地区制种玉米生产效率均值为0.863 3,且小规模农地效率值最高,大规模农地效率值最低。针对冗余投入要素的改进模拟后,提出了主要针对贡献率高的生产要素优化的建议。 Oasis agriculture is the essence of agriculture in arid areas of northwest China. With the double constraints of scarce natural endowment and fragile ecological environment,the high production efficiency of low investment and high yield is an important way to crack the double limits. Therefore,it is very necessary to evaluate the production efficiency,analyze its influence factors and further put forward the improvement strategies. However,due to the availability of data,the current evaluation of agricultural efficiency is often limited to the macroregional level and lacks micro-level research. Farmer is the most basic agricultural production units,therefore,to evaluate the production efficiency,summarize the representative area of the oasis agriculture efficiency,and put forward the corresponding improvement measures and policy suggestions from a micro operational level of the farmers’ input and output undoubtedly has better operability. Middle Zhangye in Heihe Basin has been developing agriculture since the ancient times,it is a typical representative of the northwest arid oasis agriculture,and the biggest seed corn production base in China. Based on input-output survey statistics of Zhangye,this paper supplemented special surveys. Taking seed corn farmers as the research object,this paper first evaluated the production efficiency of seed corn farms,and analyzed the regional factor and scale factor for the efficiency differences,by using data envelopment analysis（DEA）evaluation method. Results show that the regional average production efficiency was 0.863 3,and the production efficiencies differed at different scales of farmland： production efficiency was up to 0.934 0 in small farmland,0.847 6 in middle-scale farmland,and 0.828 9 in large-scale farmland.Then,based on the results of the CCR model based on input angle,the target value of input elements was used to replace the initial value to reevaluate the efficiency value,finally,the improved percentage of efficiency value were calculated by comparing

关 键 词： 农户生产效率 制种玉米 模型 规模效益