机手在操作拖拉机时，合理使用油门是提高机械生产率、动力性、经济性、操纵灵活性的重要措施之一。因此，机手在掌握正确使用油门的情况下，要学会巧用油门法。 　　(1)若负荷不足，并且农艺或工作条件的要求使拖拉机的作业速度受到较严格的限制时，可选用高档小油门，给发动 When the tractor operates the tractor, the rational use of the throttle is one of the important measures to improve the mechanical productivity, power, economy and maneuverability. Therefore, the master in the proper use of the accelerator to grasp the case, to learn how to use the accelerator method. (1) If insufficient load, and agronomic or working conditions of the tractor’s operating speed subject to more stringent restrictions, the choice of high-end small throttle, to start