农户层次氮素投入影响因素实证分析——以华北平原冬小麦为例

An Empirical Study on N-fertilizer Input of Winter Wheat Farmers and its Determinants in North China Plain

本文以华北平原冬小麦为倒，利用中德合作教育项目一华北平原集约化作物生产体系中资源可持续利用的农户调查数据，构建双对数模型对农户层次氮肥投入的影响因素进行了研究。结果表明氮素价格、土壤潜在生产能力、种植业收入比重、农业劳动力年龄、种植规模和是否施用有机肥料等因素显著影响着农户冬小麦氮素投入量。在分析和讨论的基础上，提出了合理施用氮肥的政策建议。

With the development of fertilizer industry and increases in fertilizer output, farmers have a tendency to overuse N fertilizer in China. Using doublelogarithm function and data from the farmer survey launched by the Sino-Germany Cooperative Agricultural Project in 2005, this paper analyses the factors which influence a farmer＇s N-fertilizer input during winter wheat production. The results show that the rnaior factors influencing farmers＇ N-fertilizer use are N-fertilizer price, land potential productivity, share age, cropping scale and using of organic provided in for correcting the situation. of farmers＇ cropping income, farmers＇ fertilizer. Finally some suggestions are