Centralized-type fertilizer discharge device

The invention discloses a centralized-type fertilizer discharge device, which includes a fertilizer box, a fertilizer discharge shell, a spiral type fertilizer discharger, and a fertilizer discharge shaft. The fertilizer discharge shell is installed on the lower part of the fertilizer box. A bearing seat is installed on the center of the bottom of the fertilizer discharge shell. The fertilizer discharge shaft is installed on the bearing seat and is provided with the spiral type fertilizer discharger which has a structure of multi-line (3-8 lines) spiral. The upper surface of the spiral type fertilizer discharger is higher than the top of the fertilizer discharge shell. Three or four fertilizer outlets are uniformly distributed on the periphery of the bottom of the fertilizer discharge shell. During production, the spiral type fertilizer discharger stir a fertilizer, so that the device has advantages of discharging and applying fertilizers in poor flowability. By means of the multiple fertilizer outlets, insta