Forage coverage observation device

The utility model provides a pasture coverage observation device. The pasture coverage observation device comprises a bottom plate, an outer box is arranged on one side of the outer wall of the top end of the bottom plate, grooves are formed in the outer walls of the two sides of the outer box, front columns are arranged on the front sides, close to the grooves, of the outer box, a cavity is formed in the rear side of the outer box, and symmetrically-distributed motors are arranged on the positions, close to the edge, of the outer wall of the bottom of the outer box; and output shafts of the motors are connected with threaded rods through couplings, the circumferential outer walls of the threaded rods are rotationally connected with connecting blocks, the outer walls of the sides, away from the threaded rods, of the connecting blocks are connected with sliding tables, and the sliding tables are in sliding connection with the grooves. Through the motor and the threaded rod which are arranged, the threaded rod