农田基本建设包括的内容很广,但主要的内容可概括为“土”、“水”两方面。深耕改土、平整土地、在山区修筑梯田、蓄水抗旱、排水防涝、筑台田、修水沟等,都是农田基本建设的重要项目。用于各项农田基本建设的机具统称为农田基本建设机具。农田基本建设机具的种类很多,本章只介绍常用的推土机、铲运机、平地机、开沟机等。推土机推土机是以推土铲为工作部件的自走式铲运土机械(图1)。推土机主要用于铲土并在短距离(50米之内)内运 Farmland infrastructure includes a wide range of content, but the main content can be summarized as “soil ”, “water ” two aspects. Cultivation of soil improvement, land leveling, terrace construction in mountainous areas, water storage and drought control, drainage and waterlogging prevention, construction of Taitian and Shuikougou are important projects in farmland infrastructures. The equipment used for basic farmland construction is collectively referred to as farmland infrastructure equipment. There are many kinds of farmland infrastructure equipment, this chapter only introduces the commonly used bulldozer, scraper, grader, trencher and so on. Bulldozer bulldozer is a self-propelled shoveling earthwork machine with a bulldozer as a working component (Figure 1). Bulldozers are mainly used for shoveling and are transported within a short distance (within 50 meters)