Fertilizer distributor, fertilizer distribution device using same and implementation method of fertilizer distributor

The invention relates to a fertilizer distributor. The fertilizer distributor comprises a fertilizer distribution box, a fertilizer distribution geneva wheel, a fertilizer distribution tongue and a fertilizer distribution tongue adjusting device, wherein the fertilizer distribution geneva wheel is horizontally mounted in the fertilizer distribution box; the fertilizer distribution tongue is mounted in the fertilizer distribution box, is positioned below the fertilizer distribution geneva wheel and is connected with the fertilizer distribution tongue adjusting device; the fertilizer distribution tongue adjusting device is mounted outside the fertilizer distribution box; a fertilizer inlet is formed in the top of the fertilizer distribution box; and a fertilizer outlet is formed in the bottom of the fertilizer distribution box. Smoothness of fertilizer distribution is improved effectively, and blockage of a fertilizer pipe is relieved; by the sealed fertilizer distributor, water in air can be stopped from enter