Preemergence composite herbicide application equipment for protective farming

The invention relates to the technical field of agricultural instruments, in particular to protective tillage pre-emergence composite herbicide application equipment which comprises a pesticide storage box, a mounting plate is arranged on the outer wall of the bottom of the pesticide storage box, a second telescopic part is fixedly arranged on the outer wall of the mounting plate in a penetrating mode, and a movable plate is arranged at the telescopic end of the second telescopic part. A movable plate is arranged on the outer wall of one side of the mounting plate, a movable cylinder penetrating through the mounting plate is arranged on the outer wall of one side of the movable plate, a rotating shaft is rotationally arranged in the movable cylinder, moving wheels are arranged at the end of the rotating shaft, a transverse pipe is connected to the outer wall of the pesticide storage box through a liquid guide pipe, an electromagnetic valve is arranged on the outer wall of the liquid guide pipe, and a liquid a