摘要：作为深度嵌入地方社会结构的非正式网络，宗族文化在新兴经济体发展中发挥着重要而复杂的作用。尽管已有研究探讨了网络嵌入对企业创新的影响，强调企业在社会网络中的关系与位置如何塑造其行为，但相对忽视了企业经济行动背后的文化与认知动机。基于2008—2019年中国A股民营上市公司数据，本文从文化嵌入与社会网络互动视角出发，利用地区宗族文化强度的异质性，实证检验其对企业创新投入的非线性作用，并探讨在不同类型网络嵌入背景下的调节机制。研究发现：(1)随着宗族嵌入强度上升，内群体网络带来的信任与资源协同等正向收益呈边际递减，而由认知封闭与路径依赖导致的负外部性边际递增，宗族嵌入对创新投入的总体影响呈倒U形。(2)作为正式制度嵌入，政府补贴为企业提供互补性的制度资源，在前期与宗族嵌入的正向作用产生协同，放大其促进效应；在后期则加剧其认知封闭与路径依赖的约束效应，从而强化倒U形作用。(3)作为网络结构嵌入，董事网络接近中心度为企业提供替代性信息与资源通道，稀释宗族嵌入的正向作用，同时路径依赖与认知锁定效应仍然存在，使边际递减更早出现，导致倒U形曲线的转折点向左移动。由此，本文拓展了文化嵌入对微观企业行为的研究，回应了社会网络研究中的文化转向，进一步揭示了文化嵌入与多元关系网络在互动中如何共同塑造企业创新决策。政策上，政府应充分考量本地文化土壤与社会结构特征，在适度嵌入条件下，宗族文化可转化为促进企业协作的治理资源；同时，应引导企业完善现代治理与管理机制，推动其在开放协作中持续释放创新潜力。

Abstract: As an informal network deeply embedded in local social structures, clan culture plays an important and complex role in the development of emerging economies. Although existing studies have explored the impact of network embedding on corporate innovation, attempting to explain how corporate behavior is influenced by relationships and positions within social networks, these studies have overlooked the cultural and cognitive motivations behind the economic actions taken by firms. This paper, based on the interactive perspective of cultural embedding and social networks, focuses on the regional heterogeneity of clan culture intensity and analyzes its nonlinear impact on corporate innovation investment. It also explores the moderating mechanisms in different types of network embedding contexts. An empirical study of Chinese listed private enterprises reveals that as the intensity of clan embedding increases, the positive benefits of trust and resource synergy brought by in-group networks show diminishing marginal returns, while the negative externalities caused by cognitive closure and path dependence show increasing marginal returns. The overall impact on corporate innovation investment follows an inverted U-shape. As an expression of formal institutional embedding, government subsidies provide supplementary institutional resources for firms, synergizing with the positive effects of clan embedding in the early stages, while intensifying its constraint effects in the later stages. As an expression of network structure embedding, board network centrality provides firms with alternative information and resources, diluting the positive effects of clan embedding, while its path dependence and cognitive lock-in effects still persist. This paper expands research on the cultural embeddedness of micro-level corporate behavior, responds to the cultural turn in social network research, and further reveals how cultural embedding and diverse relational networks jointly shape corporate innovation decisions.