本文立足创新增长与空间整合理论,通过构建包含“创新投入+空间分割→创新收益/增长”机制的内生创新增长模型,从综合视角探讨了创新投入、空间分割影响创新增长分异的理论机制。理论结果表明：较高的创新成本阻碍创新增长；较低的产品空间分割程度、较高的技术空间溢出程度有利于创新增长。实证研究发现：创新的积累对于创新活动具有重要作用,而创新成本对于创新增长具有显著抑制作用；中国高技术产业创新增长存在明显区域差异,全国层面,产品市场分割程度制约创新增长,本地市场规模对于创新增长具有显著正向促进作用；区域层面,产品市场分割程度、本地市场规模对于东部和西部区域创新增长的影响呈现分化现象,实证分析有效验证了理论命题。

Based on the theory of growth and spatial integration, this paper discusses the theoretical mechanism of innovation input and spatial segmentation affecting the differentiation of innovation growth by constructing the endogenous growth model of mechanism innovation including "innovation input + space segmentation → innovation revenue/growth → innovation input" from a comprehensive perspective. The theoretical results show that high innovation cost hinders innovation growth. Lower product space segmentation degree and higher technology space overflow degree are conducive to innovation growth. The empirical study finds that the accumulation of innovation plays an important role in innovation activities, while the innovation cost has a significant inhibitory effect on innovation growth. There are obvious regional differences in innovation growth of China"s high-tech industry. At the national level, the degree of product market segmentation restricts innovation growth, and the local market size has a significant positive effect on innovation growth. At the regional level, the influence of product market segmentation degree and local market size on the innovation growth in the eastern and western regions is divided. Finally, the empirical analysis of China"s high-tech industry as an example validates the theoretical proposition and puts forward some Suggestions.

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国家自然科学基金重点项目资助(41731278,71733001)；中国博士后科学基金面上资助项目资助(2018M6400032,2019M650767)。