《Table 3 Values and distribution of slack variables for ineffective pure technical efficiency of agr

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《Study of Efficiency of Agricultural Listed Companies Based on DEA Model》

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With the aid of DEA2.1 software，we calculated the DEA effectiveness of 20 agricultural listed companies in 2016 based on the CCR and BCC models.The results are shown in Table 2.From Table 2，it can be seen that Beidahuang，Yasheng Group，Wanxiang Denong，Fengle Seed，and Xinjiang Western Animal Husbandry realized DEA effective in both the technical efficiency and scale efficiency.In the rest 15 companies，four companies（Longping High-Tech，Yisheng Livestock&Poultry Breeding，Denghai Seed，and Luoniushan）were effective in technology but not in scale，so the overall efficiency was not effective，because these companies were influenced by natural factors such as crop rotation and harvest date；six companies（Muyuan Food，Truein Group，Huaying Agriculture，Yunnan Investment Ecology and Environment Technology，and Xinjiang Korla Pear）were effective in scale but not in technology，so the overall efficiency was not effective，these companies had certain scale in respective field，but had no advantage in the technology.Five companies were not effective in the overall efficiency because of ineffective in both the technology and the scale，namely，New Wellful，Minhe Animal Husbandry，Fucheng Wufeng Food，Xiantan，Win-all High-tech Seed.These companies are restricted by the production scale due to natural laws，and their technologies are mature，it is difficult to form unique technical efficiency，so the technical is not high.