Efficiency analysis of wheat production based on DEA in Hebei Plain
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Abstract:
Based on the C-D production function and Data Envelopment Analysis (DEA) method, this study recruited 7 cities’ farmers in Hebei plain as the research objects, selected the wheat production inputs and outputs indexes in 2013, and finally analyzed the returns to scale, effectiveness and the relaxation problems of wheat production on a microscopic level. The results showed that the return to scale for wheat production was in a state of decreasing, and wheat production inputs had reached saturation or redundancy. For the relaxation problems of wheat production in Hebei pain, the maximum redundancy of irrigation was 625.05 m3?hm-2 in Shijiazhuang while the minimum number was 0 m3?hm-2 in Langfang; the maximum redundancy of nitrogen fertilizer was 74.625 kg?hm-2 in Hengshui; for Phosphate fertilizer, there were many redundancies in all of the 7 cities, and the maximum redundancy was 48.45 kg?hm-2 in Baoding; the maximum redundancy of machine was small in Hengshui; the maximum increase of output was 1542.15 kg?hm-2 in Cangzhou. The pure technical efficiency, comprehensive technical efficiency and scale efficiency were all inefficient. Therefore, the pure technical efficiency and scale efficiency were slightly inefficient because the values of them were all above 0.7 which was bigger than the value of comprehensive technical efficiency. Therefore, there is lager space for the improvement of wheat production efficiency in Hebei plain.
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