长江经济带测土配方施肥技术效果及其改进——基于滇、鄂、苏三省水稻种植的实证分析
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1.华中农业大学经济管理学院;2.云南农业大学经济管理学院

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中国博士后科学基金,国家自然科学基金项目(面上项目,重点项目,重大项目)


The Performance of Adopting Soil Testing and Formulated Fertilization Technology in the Yangtze River Economic Belt and Its Improving strategies - An Empirical Analysis of Rice Farmers in Yunnan, Hubei and Jiangsu Provinces
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1.School of Economics and Management, Huazhong Agricultural University;2.School of Economics and Management, Yunnan Agricultural University

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    摘要:

    本文基于长江经济带省份云南、湖北和江苏的农户调查数据,运用Tran-slog形式随机前沿生产函数测算了水稻种植户的化肥施用效率,进而利用Tobit模型估计了农户采用测土配方施肥技术对其水稻化肥施用效率的影响。研究结果表明:(1)在其他条件不变的情况下,长江经济带的水稻化肥施用效率仍存在31.5%的改进潜力,上游地区(云南)的化肥施用效率相较要低于长江中游(湖北)和下游地区(江苏)。(2)长江经济带的水稻化肥施用效率要低于水稻生产技术效率,说明现阶段减少化肥用量不仅不会导致水稻产量下降,反而有助于提高化肥施用效率。(3)农户采纳测土配方施肥技术显著提高了水稻化肥施用效率,但对于化肥施用效率处于较高水平的农户,测土配方施肥技术对化肥施用效率的提升作用有所减弱。(4)进一步分析发现,通过高标准基本农田建设促成土地连片化经营能够提高测土配方施肥技术对化肥施用效率的改进作用。

    Abstract:

    Based on the survey data of farmers in the Yangtze River economic belt provinces including Yunnan, Hubei and Jiangsu, this paper adopts the Tran-slog stochastic frontier production function to measure the fertilizer application efficiency and then uses the Tobit model to estimate the impact of adopting soil testing and formulated fertilization technology on fertilizer application efficiency in rice production. The research results show that: (1) The fertilizer application efficiency of rice farmers in the Yangtze River Economic Belt can be improved 31.5% potentially; the fertilizer application efficiency in the upper reaches (Yunnan) is relatively lower than the middle (Hubei) and the lower reaches (Jiangsu) of the Yangtze River. (2) The fertilizer application efficiency of rice is lower than the technical efficiency in the Yangtze River Economic Zone, indicating that reducing fertilizer use would not lead to the decline of rice yield and would contribute to the improvement of fertilizer application efficiency. (3) Adopting soil testing and formulated fertilization technology can significantly improve fertilizer application efficiency, but for farmers who originally have higher fertilizer application efficiency, the effect of adopting soil testing and formulated fertilization technology on improving fertilizer application efficiency has been proved to be lower. (4) Further analyses indicate that the well-facilitated capital farmland construction project increases the joint planting scale and thus improves the positive effects of adopting soil testing and formulated fertilization technology on fertilizer application efficiency.

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  • 收稿日期:2021-03-08
  • 最后修改日期:2021-04-01
  • 录用日期:2021-04-01
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