自主R&D、技术引进和生产率增长——对中国分行业大中型工业企业的实证研究

Own R&D、Technology Purchased and Productivity Development

本文运用DEA思想将中国32个分行业大中型工业企业的生产率增长进行分解,并在此基础上,对自主R&D、国外技术引进的产出和生产率回报率进行了实证研究。我们发现尽管高R&D投资行业具有更高的生产率增长,但R&D投资并不是造成增长的原因;如果各R&D投资的产出回报率为负值,R&D投资强度太大和预算软约束等则是主要的原因。同时,研究还发现国外技术引进只对技术进步有促进作用,自主R&D和国内技术购买的生产率回报率较差。

This paper examines the effect of the own R＆D, foreign technology purchased and domestic technology purchased of Chinese large and medium-sized enterprises by industries to the productivity growth, using the data of thirty-two industries during the period 1996～2003. The results find that although the industries owning higher R＆D investment have higher productivity growth rate, R＆D investment is not the reason that causes the difference.