目的 对玉米秸秆的物理属性进行分析研究，结合理论分析和工艺设计，提出可实现工业化制造的玉米秸秆粉碎装备。方法 在对玉米秸秆超微粉碎进行有效性分析的基础上，科学地确定剪切、挤压、撞击的路径，综合设计出一种高效、高通量、低耗能、高粉碎目数，并且满足玉米秸秆饲料化要求的超微粉碎装备。结果 最终成功完成了玉米秸秆超微粉碎机整体方案的设计。结论 粉碎后的玉米秸秆可用作牲畜饲料和制作包装衬垫，对提高秸秆利用率具有重要意义。

The work aims to study the physical properties of corn stalk and combine theory analysis with process design to create a process route which can achieve industrialized manufacturing of corn stalk crushing process. Based on effectiveness analysis of the ultra-fine pulverization of corn stalk, routes of shearing, extrusion and impaction were determined scientifically. An effective ultrafine grinder featured by high throughput, low consumption and many crushing meshes and meeting fodder requirement of corn stalk was designed comprehensively. The overall scheme of ultrafine grinder for corn stalk superfine was designed. Crushed corn stalk can be used as fodders of livestock and pads of packing. It is significant for improving the use ratio of corn stalk.