Spacing-adjustable corn planter

The utility model relates to the technical field of agricultural machinery. The utility model relates to a corn planter, in particular to a spacing-adjustable corn planter. Fixing plate, two groups ofuniversal wheel fixing plates are fixedly mounted at the bottom of the fixing plate and are symmetrical to each other; a rotating rod is rotatably connected to one side between the fixing plates, a push rod is fixedly installed on the side, away from the rotating rod, of the top of each fixing plate, a supporting plate is welded to the other side between the fixing plates, two sets of parallel sliding grooves are formed in the supporting plate, the side, sleeving the rotating rod, of the sowing box is concentrically and rotatably provided with a sowing device, and the sowing device comprisesa sowing box. According to the utility model, the blanking rate of the seeding device is changed, so that when the whole machine walks for the same distance, the quantity of the sown corn seeds is changed, and the planting dis