中文摘要：

科技财政对科技创新不同阶段的影响及效果具有不同的特点.运用结构向量自回归模型（SVAR）研究了科技财政对科技创新阶段性的动态贡献作用.脉冲响应函数和方差分解结果表明：科技财政与科技创新正相关,且两者存在长期稳定的均衡关系；科技财政对科技创新的基础研究阶段支持作用显著,尤其在短期内对其带动作用较强,对科技成果转化阶段和产业化阶段的作用较弱.因此,政府应逐步构建稳定增长的科技财政投入机制,探索政学企、政保、政银等多元化合作模式,实施财政补偿与存款支持政策,加大科技财政在基础研究阶段的投入规模,充分发挥政府的引导与支撑作用.

英文摘要：

S＆T Public expenditure has different effect on different period of S＆T innovation. It concerns about dynamic contribution of S＆T public expenditure on S＆T innovation in different period based on SVAR. The results of the im- pulse response function and variance decomposition show that S＆T public expenditure and S＆T innovation are positively related, and have a hmg-term stable relationship; S＆T public expenditure has a significant effect on S＆T innovation in hasic research period, especially in a short term. The effect of S＆T public expenditure on the transformation and indus- trialization of S＆T achievements is weak. Therefore, the government should construct a stable mechanism, explore the diversified cooperation triodes among university and industry, government and bank, government and insurance companies and sn on, implement financial compensation and deposit support policy, increase the scale of S＆T public expenditure in basic research period, and play a significant role on guiding and supporting in S＆T innovation.