中文摘要：

本文基于公共物品模型和基础设施实物指标，采用双向固定效应模型分析了灌溉设施、等级公路和等外公路对中国以及东中西部各地区1995—2010年农业经济增长的影响。结果表明：整体上，灌溉设施、等级公路和等外公路都对中国农业生产总值有正向促进作用，其中灌溉设施的促进作用最大;分地区来看，灌溉设施和等级公路的农业生产效应分别体现在中部地区和西部地区，而等外公路的农业生产效应在东部地区较为显著。

英文摘要：

In this article, an empirical model has been constructed based on the public goods model and thephysical indicators about infrastructure, and a two-way fixed effects model has been used to analyze the effects of irrigation facility, standard highway and substandard highway on China＇s agricultural economic growth from 1995 to 2010, from national level to interprovincial level. The results show that irrigation facility, standard highway and substandard highway all have positive effects on China＇s agricultural GDP, and the influence of irrigation facility is more obvious. From the district level, irrigation facility has a positive impact on agriculture of central China, while standard highway affects that of west China. And the substandard highway promotes agricuhural economic growth in the East. Based on the conclusions, we advise that Chinese central government and the local government of the East should take different investment policies in infrastructures.