基于创新链分析框架和制度逻辑理论，对关键核心技术攻关中创新链断裂的形成机理进行理论分析，并在此基础上探讨新型举国体制支撑关键核心技术全链条突破的实现机制。研究结果发现：关键核心技术攻关始终嵌入国家逻辑、科学逻辑与市场逻辑交织并存的制度复杂性之中，创新链断裂正是这种制度复杂性在不同阶段引发协同困难的集中体现；有为政府通过制度耦合、场域构建与主体编排策略，形成支撑创新链贯通的实现机制，推动基础研究、应用研究与市场化扩散之间的有效衔接，为关键核心技术突破提供全链条支撑。

Drawing on innovation chain analytical framework and institutional logic theory, this research provides a theoretical analysis of the mechanisms underlying innovation-chain fragmentation in key core technology development and, on this basis, explores the mechanisms through which the new system for mobilizing resources nationwide supports end-to-end breakthroughs in key core technologies. The study finds that key core technology development is embedded in institutional complexity, where state logic, scientific logic, and market logic coexist and interact, and innovation-chain fragmentation is a concentrated manifestation of the coordination difficulties generated by such institutional complexity across different stages of innovation. It further finds that an enabling government, through institutional coupling, field construction, and actor orchestration, establishes the mechanisms that support innovation-chain integration, promotes effective linkages among basic research, applied research, and market diffusion, and ultimately provides end-to-end support for breakthroughs in key core technologies.