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一个国家的企业保持活跃的R&D投入和技术创新是国家经济可持续发展的基础。但是由于R&D活动存在一定的外部性,政府有必要通过补贴的方式,激励企业增大R&D投入。以我国高技术产业为例,对高技术产业五个细分行业2003—2008年的数据进行面板数据分析。研究发现:(1)政府补贴并不一定会促使企业增加R&D投入水平,其效应与政府补贴率r有关;(2)政府补贴对企业R&D投入的影响具有滞后性;(3)政府补贴对高技术产业的五个细分行业影响存在较大差异。
A country’s enterprises to maintain active R & D investment and technological innovation is the basis for the sustainable development of the country’s economy. However, due to the externality of R & D activities, it is necessary for the government to encourage enterprises to increase R & D investment through subsidies. Taking the high-tech industry in our country as an example, panel data analysis is conducted on the data of five segments of high-tech industry from 2003 to 2008. The results show that: (1) government subsidy does not necessarily promote enterprises to increase R & D investment level, the effect of which is related to the government subsidy rate r; (2) the government subsidy lags behind the impact of R & D investment; (3) There are big differences in the impact of the five industry segments in the technology industry.