农作物秸秆是一种巨量农业副产品，已被作为可再生资源进行了广泛的开发利用，以应对严峻的能源短缺和环境问题。介于宏观尺度、微观尺度分析之间的介观尺度分析能兼顾精度和效率，深化补充秸秆特性的知识体系。本研究基于分子振动光谱与介观化学成像技术，选择玉米、小麦、水稻等主要农作物秸秆为研究对象，创造性的以"化学"的视角表达细胞级别的植物组织，对其化学组分分布进行无损、全组分的原位同步分析方法研究，为秸秆深入认知开拓全新、高效的表征技术。拟解决关键问题：1）不同农作物秸秆高质量红外/拉曼显微图像获取方法；2）光谱图像数据特征提取和特定成分模式识别方法；3）介观尺度下秸秆全组分化学组成分布变化规律；4）应用探索：秸秆温和碱处理过程中介观尺度下化学组成溶解机理。研究成果能够为开发全新的秸秆精细利用技术提供高效、准确、丰富的表征方法，为实现秸秆的深加工、高值资源化应用铺设技术支撑通道，具有重要的现实应用价值。

Crop straw is one kind of vast agricultural by products, which is now being broadly developed as renewable resource for responding to the serious energy shortage and environmental issue. Mesoscopic analysis，an concept of analysis between microscopic and macroscopic，has the capacity to successfully combine analytical accuracy and efficiency in enhancing the knowledge complex of crop straw characteristics. The study is to develop a totally new and high-efficiency characterization technique for deeper understanding crop straw, of which corn, wheat and rice are included, by creatively "seeing" plant tissue in a chemical sense on cellular level. Based on vibration spectrum and mesoscopic chemical imaging research, the technique is developed for nondestructive and in-situ synchronized analysis of full chemical composition within kinds of crop straw. Main issues need to be solved in this study include: 1) the methods to obtain high-resolution image of infrared- Raman microspectroscopy for different crop straw; 2) the methods for spectral image data characteristics extracting and the composition discrimination; 3) Research on the discipline of full composition distribution and variation of crop straw in mesoscale; 4) Application exploration: the mesoscale resolution mechanism of the chemical composition of crop straw in mild alkali solution. The study is to effectively supply accurate, abundant characterization method for developing new and delicate practical straw utilization technology, and to build a technical supporting pathway for achieving crop straw further processing and high-value recycling application.