财政支农政策提高了农民生产的积极性,促进了"三农"发展,也激励了农民生产经营中污染性要素化肥、农药的投入.基于我国2007～2015年省份面板数据,检验了财政支农规模对农业面源污染及其EKC曲线拐点的影响.研究发现,财政支农规模对农业生态环境存在"负外部性",扩大财政支农规模不仅刺激了化肥农药的施用,还可能延迟农业面源污染EKC曲线拐点的到来.因此,不能片面强调财政支农的总量和规模,应当大力推进建立以绿色生态为导向的农业补贴政策体系,优化对农林等产业的支持结构和质量,促进农业面源污染的降低.%The policy of financial support for agriculture has increased the enthusiasm of farmers'p roduction, promoted the development of agriculture, rural areas and farmers, and also stimulated the input of chemical fertilizers and pesticides in agricultural production which lead to pollution. Based on the panel data of China in 2007～2015, in this paper, the impacts of financial expenditure scale on agriculture on agricultural non-point source pollution and the inflection point of EKC curve are examined. The study results show that the scale of fiscal expenditure has a "negative externality" to the agricultural ecological environment. Expanding the scale of fiscal expenditure not only stimulates the utilization of fertilizer and pesticides, but delays the arrival of the inflection point of EKC curve of the agricultural non-point source pollution as well. Therefore, it should not have the one-sided emphasis of the quantity and scale of financial support for agriculture. Nevertheless, establishment of a green ecology-oriented agricultural subsidy policy system should be promoted vigorously, and the support structure and quality of the agricultural and forestry industry should be optimized, aiming at promoting the reduction of agricultural non-point source pollution.
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