干旱地区农业研究2018，Vol.36Issue(2)：218-225,8.DOI:10.7606/j.issn.1000-7601.2018.02.32
黄土高原县域农业生产效率时空变化分析
Spatio-temporal change of agricultural production efficiency in the loess plateau
摘要
Abstract
The agricultural production efficiency change of 281 counties in the Loess Plateau was analyzed over 1987 to 2014 using Data Envelopment Analysis (DEA ) ,taking the cultivated area ,sown area of grain ,rural employees ,total power of agricultural machinery ,and the amount of agricultural chemical fertilizers as input indexes ,gross agricultural product ,grain and oil output as output indexes .The results suggest that :(1 ) The average value of comprehensive effi-ciency was 0 .694 ,which is on medium level ,and keeps a moderate rate of growth ,but the regional difference is larger . The coefficient of variation of high value (V>0 .250 ) located in some counties in the northern and eastern parts of the Loess Plateau . (2 ) The variation of pure technical efficiency was divided into three basic types according to the calcula-tion .The number of counties with high value due to pure technical efficiency increased ,and there are more such kind of counties from the south to the north .Comprehensive efficiency affected by both pure technical efficiency and scale effi-ciency ,and pure technical efficiency has more contributed to the comprehensive efficiency than the scale efficiency .(3 ) The scale efficiency value was greater than 0 .9 in the entire area with a high scale efficiency and the better balance in distribution .Most counties were in the stage with increasing scale returns in the Loess Plateau in 2005 to 2014 ,and it is still possible to get higher production efficiency by expanding the scale of agricultural production .关键词
农业生产效率/DEA模型/县域/黄土高原Key words
agriculture production efficiency/DEA/county/the Loess Plateau分类
管理科学引用本文复制引用
张平平,王飞,王蕾钦,杨蒙..黄土高原县域农业生产效率时空变化分析[J].干旱地区农业研究,2018,36(2):218-225,8.基金项目
中国科学院国际合作局对外合作重点项目(16146KYSB20150001) （16146KYSB20150001）
欧盟委员会Horizon2020项目"基于中欧农业生产与环境恢复的交互式土壤质量评价"(635750) （635750）
