Single-wheel double-end spiral uniform-application fertilizer apparatus

A fertilizer inlet and a fertilizer inlet bolt hole are formed in the upper portion of the shell, a fertilizer outlet and a base are arranged on the lower portion of the shell, a mounting hole is formed in the base, the front shaft diameter and the rear shaft diameter of a fertilizer discharging wheel with an inner hexagonal hole in the core portion are rotationally assembled with an end cover front hole and a shell rear hole respectively, and two spiral blades are evenly distributed in the circumferential direction of the fertilizer discharging wheel. The width-depth ratio of the fertilizer guide groove formed by the spiral blades adjacent to the axial surface is 1.5, and the end cover is fixed on the shell through a bolt. According to the fertilizer feeder, the double-end spiral blade fertilizer guide grooves with the width-depth ratio of 1.5 are formed in the fertilizer feeding wheel, the axial fertilizer pushing effect of the fertilizer feeding wheel can be improved under the condition that the rotating s