中文摘要：

农机购置补贴政策在“工业反哺农业”、加快农业现代化进程中发挥着不可替代的“杠杆”作用。文章在梳理农机购置补贴及财政支农支出的传导机制和拓展柯布-道格拉斯生产函数的基础上，基于省际面板数据，分剐对我国粮食主产区和非粮食主产区的农机购置补贴与财政支农支出传导机制的有效性进行实证研究，结果表明：（1）粮食主产区和非主产区的农机购置补贴及财政支农支出的传导机制均是有效的；（2）粮食主产区和非主产区的土地生产率对单位面积土地上农机购置补贴的弹性分别为0．0045、0．0189；（3）粮食主产区和非主产区土地生产率对单位面积土地上财政支农支出的弹性依次为033、025。

英文摘要：

Subsidies policy for purchasing agricultural machines plays a very significant role in the course of feedback from industry to agriculture and acceleration of agricultural modernization. On the basis of analyzing the conduction mechanism of subsidies policy for purchasing agricultural machines and public expenditure on agriculture theoretically and improving the Cobb-Douglas production function, the author makes an empirical research on the effectiveness of conduction mechanism of subsidies for purchasing agricultural machines and public expenditure on agriculture in the main grain producing areas and in the other areas employing Chinese inter-provincial panel data. The regression results indicate： the conduction mechanisms of the subsidies for purchasing agricultural machines arranged by government and public expenditure on agriculture are both efficient in both the main grain producing areas and other areas. The elasticity of land productivity with respect to subsidies/land ratio is about 0.0045 and 0.0189 and that of land productivity with respect to agricultural-public--expenditure/land ratio is about 0.33 and 0.25 respectively in the main grain producing areas and other areas.