中文摘要：

采用DEA—Malmquist指数对全要素生产率增长率进行了分解，以国有企业固定资产投资作为公共投资的代理变量，检验了公共投资对全要素生产率增长率及其分解的影响。结果表明，公共投资对全要素生产率增长具有负向影响，且无显著的区域差异；公共投资对技术进步的促进作用仅体现在东部，而西部公共投资对纯技术效率的负向影响最小；东、中、西部公共投资对规模效率均无显著影响。因此，应从总量上减少公共投资，为稳定经济进行的投资应该向西部地区倾斜，并着力改善东部地区具有技术进步作用的公共投资。

英文摘要：

This paper conducts the decomposition of TFP（i.e. total factor productivity） growth ote by DEA-Malmquist index and with state-owned fixed-asset investment as proxy variable of public investment, examines the effect of public investment on the TFP growth rate and its decomposition, which shows that the effect of public investment on the TFP growth rate, is negative and has no significantly regional differences, only eastern public investment promotes technological progress well, western public investment hinders pure economic efficien- cy least, and public investment has no significant effect on scale economic efficiency. Therefore, public investment should be reduced, in- vestment for stabilizing economy should be inclined to the west, and the eastern public investment about technology should be improved.