Adjustable fertilizing device for corn

The invention discloses an adjustable fertilizing device for corn. The adjustable fertilizing device comprises a material collecting box, a supporting seat and a material conveying pipe. According to the adjustable fertilizing device, five sets of sleeves and limiting nuts are arranged on the inner wall of the supporting seat through guide rods so that angle deflection positioning can be effectively performed on the material conveying pipe in the supporting seat, and therefore corn fertilizer in the material collecting box arranged on a supporting frame can be effectively conveyed into the material conveying pipe and a material guiding pipe through a connecting pipe and a corrugated pipe; meanwhile, a screw rod driven by a motor in a mounting seat is used in cooperation, so that the material conveying pipe and the material guiding pipe can adjust the positions of corn fields with different column distances and different height positions when the corn fields are fertilized; and therefore, the spreading precisi