粮食产业是关系国计民生的重要产业，依托科技创新推动粮食产业高质量发展是建设农业强国、推进中国式现代化的根本要求。基于中国式现代化新征程对粮食产业高质量发展的新要求，分析了科技创新赋能粮食产业高质量发展的理论机理和现实诉求，从科技供给、科技配套、科技吸纳3个方面分析了当前中国科技创新赋能粮食产业高质量发展的制约因素，包括科技创新效率偏低，科技供给能力有待加强；协同合作创新不足，科技配套能力有待加强；经营主体素质不高，科技吸纳能力有待加强。重点从顶层设计、供需联动、集成融合、保障支撑4个维度分析了科技创新赋能粮食产业高质量发展的实现机制，包括构建顶层设计机制，引领科技创新赋能粮食产业高质量发展的科学方向；构建供需联动机制，激发科技创新赋能粮食产业高质量发展的长效动力；构建集成融合机制，提升科技创新赋能粮食产业高质量发展的现实功效；构建保障支撑机制，突破科技创新赋能粮食产业高质量发展的瓶颈约束。

The grain industry, which is related to the national economy and the people’s livelihood, is an important industry. Promoting high-quality development of the grain industry though sci-tech innovation is the fundamental requirement for building a strong agricultural country of China and promoting Chinese path to modernization. Based on the new requirements of China’s new journey to modernization for the high-quality development of grain industry, this paper analyzes the theoretical mechanism and practical demands of the high-quality development of grain industry enabled by sci-tech innovation. It also analyzes the constraints of sci-tech innovation to empower high-quality development of the grain industry in China from three aspects, which are technology supply, technology support, and technology absorption. These constraints include the low efficiency of sci-tech innovation, and the need to strengthen sci-tech supply capacity; lack of collaborative innovation and insufficient technological support capabilities; the quality of the business entity is needs to be improved, and the ability to absorb technology needs to be strengthened. Focusing on four dimensions: top-level design, supply-demand linkage, integration and fusion, and guaranteed support, this paper analyzes the implementation mechanisms of sci-tech innovation empowering the high-quality development of grain industry. In other words, the top-level design mechanism is constructed as a scientific direction which will lead the highquality development of the grain industry empowered by sci-tech innovation; the supply-demand linkage mechanism will work as long-term driving force to stimulate sci-tech innovation and empower the high-quality development of the grain industry; the integration and fusion mechanism is built to enhance the practical effectiveness of sci-tech innovation in empowering the highquality development of the grain industry; the guaranteed support mechanism is to break the bottleneck of sci-tech innovation in empowering the high-quality development of the grain industry.