中文摘要：

根据制度观理论,采用主板和中小板上市公司的2003～2013年数据,实证分析了国家创新体系促进企业研发投入时受到企业特征的影响。国家创新体系与滞后一期企业研发投入显著正相关,且负债水平和企业年龄都会显著调节国家创新体系与企业研发投入之间的关系,但两者的调节效应有所不同。具体而言,负债水平会显著削弱国家创新体系对企业研发投入的促进作用,而企业年龄则会加强国家创新体系对企业研发投入的促进作用。

英文摘要：

Based on the IBV（Institution-Based View of Business Strategy）,this study investigates the impact of NIS（National Innovation System）on RD with a pooled data sample of the 8 312 main board and SMEB companies for the period 2003~2013.The result showed that there was a significantly positive relationship between the NIS and the next-year RD input of main board and SMEB companies,and then the leverage and firm age was the moderator of the relationship between NIS and the RD input of main board and SMEB companies,but the moderating effect was different.Specifically,the leverage could reduce the incentive effect of NIS on the firm RD input.The firm age could improve the incentive effect of NIS on the firm RD input.