中国工业企业支出规模与R&D波及面:2005～2007

The Expenditure Scale and R&D Involvement Scale of Industrial Enterprises in China: 2005～2007

通过使用2005-2007年我国工业企业面板数据实证检验企业的R&D决策以及R&D支出规模的影响因素,并用2007年企业样本检验R&D对企业产出以及生产率的影响作用。检验表明:企业员工、企业利润、企业固定资产以及企业出口情况都对企业的R&D决策以及支出规模具有显著的正向影响,在引入企业过去的R&D变量时,会更好地解释现在的R&D决策以及支出规模;R&D的产出弹性显著为正,但在引入中间投入变量下,R&D的产出弹性会明显下降,R&D对企业生产率具有显著的促进作用。

This article empirical examines the R&D decision of enterprises and the impact factors of R&D expenditure scale through the panel data of Chinese industrial enterprises from 2005 to 2007 and employs the enterprise samples of 2007 to examine the influence of R&D on the output and productivity of enterprises.The study shows that: the stuff number,the profit,the fixed asset,and the export scale of enterprises are all have positive effects on R&D decision and expenditure scale,which can be more specifically explained when the former R&D variables are taken into account;the output elasticity of R&D is significantly positive,which would notably decrease when the intermediate variables are induced;the enterprise productivity could be significantly promoted by the R&D.