Spraying device for preventing and controlling white spot of corn plants

The utility model discloses a spraying device for preventing and controlling white spot of corn plants, and relates to the technical field of spraying devices. Comprising an output mechanism, a plurality of spraying mechanisms are fixedly connected to the back face of the output mechanism, each spraying mechanism comprises a base, inserting columns are fixedly connected to the bottom of the base at equal intervals in a circumferential shape, a hollow liquid guide rod is arranged on the base in a vertically-penetrating mode, and the bottom end of the liquid guide rod is connected with the output mechanism; the bottom of the spraying box is fixedly connected with an outer ring, the inner wall of the outer ring is fixedly connected with a rotating bearing, and the inner wall of the rotating bearing is fixedly connected with the outer wall of the liquid guide rod. The spraying mechanisms are always arranged on the periphery and the center of a corn field, so that comprehensive spraying and covering of pesticide c