科学技术能够为经济社会发展提供方案，技术创新是方案得以实施的关键因素与核心动力。企业是技术创新的主体，在企业发展过程中，企业异质性问题对技术创新造成较大障碍且难以避免，技术创新也会因企业异质性使其发展不均衡。论文的研究主题为企业异质性对技术创新的影响，通过探讨空间溢出效应下企业异质性对技术创新的作用机制，以期能够给推动技术创新长足发展提供建议。

首先，论文梳理了企业异质性与技术创新的相关研究成果，设计了在空间溢出视角下研究企业异质性对技术创新影响的总体框架，界定了企业异质性与技术创新的相关概念及理论基础。其次，论文对我国近十年企业异质性和技术创新现状进行了描述，使用欧式距离方法对企业异质性系数进行了衡量，以专利授权数对技术创新强度进行了测度，并进一步分析了企业异质性系数与技术创新强度的空间分布情况。最后，论文对模型变量、空间计量模型、空间权重矩阵进行了设计，基于空间杜宾模型在空间溢出视角下研究了企业异质性对技术创新的影响，得出以下结论：（1）企业规模对技术创新有正向影响，企业性质、企业盈利水平、企业集中度、企业无形资产对技术创新有负向影响；（2）考虑空间滞后效应后，企业规模与企业无形资产能够促进技术创新，企业性质、企业盈利水平、企业集中度能够抑制技术创新；（3）效应分解后，企业规模与企业无形资产对技术创新的空间溢出效应为正，企业性质、企业盈利水平、企业集中度对技术创新的空间溢出效应为负；（4）分地区来看，东部地区企业性质、企业集中度以及企业无形资产的正向空间溢出效应显著，中部地区企业规模、企业性质、企业集中度、企业无形资产的正向空间溢出效应显著，西部地区仅有企业盈利水平的空间溢出效应显著，东北地区仅有企业集中度的空间溢出效应显著，且都为抑制作用。

Science and technology can provide solutions for economic and social development, and technological innovation is the key factor and core driving force for the implementation of the plan. Enterprises are the main body of technological innovation. In the process of enterprise development, the problem of enterprise heterogeneity has caused great obstacles to technological innovation and is unavoidable. Technological innovation will also develop unbalanced due to enterprise heterogeneity. The research theme of the thesis is the impact of corporate heterogeneity on technological innovation. By exploring the mechanism of corporate heterogeneity on technological innovation under the spatial spillover effect, it is expected to provide suggestions for promoting the rapid development of technological innovation.

First of all, the thesis sorted out the related research results of enterprise heterogeneity and technological innovation, designed an overall framework for studying the impact of enterprise heterogeneity on technological innovation from the perspective of spatial spillover, defined the related concepts and theoretical basis about enterprise heterogeneity and technological innovation. Secondly, the thesis described the status quo of enterprise heterogeneity and technological innovation in our country in the past ten years, used the Euclidean distance method to measure the coefficient of enterprise heterogeneity, measured the technological innovation intensity by the number of patents granted, and further analyzed the Spatial distribution of firm heterogeneity coefficient and technological innovation intensity. Finally, the thesis designed the model variables, spatial econometric model, and spatial weight matrix. Based on the spatial Durbin model, the thesis studied the impact of firm heterogeneity on technological innovation from the perspective of spatial spillover, and drew the following conclusions: (1)Firm size had a positive impact on technological innovation. The nature of the enterprise, the level of enterprise profitability, the concentration of the enterprise, and the intangible assets of the enterprise had a negative impact on technological innovation.(2) After considering the spatial lag effect, the size of the enterprise and the intangible assets of the enterprise could promote technological innovation, and the nature of the enterprise, the level of enterprise profitability, and the degree of enterprise concentration could inhibit technological innovation. (3)After decomposing the effect, the spatial spillover effect of enterprise scale and enterprise intangible assets on technological innovation was positive, and the spatial spillover effect of enterprise nature, enterprise profitability, and enterprise concentration on technological innovation was negative.(4)From a regional point of view, the positive spatial spillover effect of enterprise nature, enterprise concentration and enterprise intangible assets was significant in eastern China. The positive spatial spillover effect of enterprise scale, enterprise nature, enterprise concentration and enterprise intangible assets was significant in central China. In western China, only the spatial spillover effect of corporate profitability was significant, and in northeastern China, only the spatial spillover effect of corporate concentration was significant, and both played a restraining role.

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