The content of this course is to guide students to understand and recognize the characteristics and uses of various agricultural machinery and their operation and maintenance. The content includes two parts, agricultural power machinery and agricultural work tools. Agricultural power mainly introduces the principle, operation and maintenance of engines (engines), petrol engines including single cylinder and multi-cylinder, diesel engines and electric motors. Agricultural work tools are introduced: seedling cultivation, soil preparation, seeding, transplantation, cultivating management, irrigation, pest control, fertilization, harvesting and other equipment, as well as the transportation and processing equipment for agricultural products after harvest, crop cultivation environmental control facilities, and other engineering machinery Agricultural applications.