Fertilizer applicator for planting banestrian

The fertilizer applicator comprises a water barrel, a sealing ring is connected to the top of an inner cavity of the water barrel in a sleeved mode, a piston is connected to the interior of the sealing ring in a sleeved mode, a push rod is connected to the top of the piston in a sleeved mode, a water outlet hole is formed in the bottom of the water barrel, and threads are formed in the bottom of a barrel body of the water barrel. The surface of the thread is in threaded connection with a nut, the bottom of the nut is sleeved with a fertilizer box, meshes are formed in the bottom of the fertilizer box, a fixing frame is bolted to the bottom of the back of the fertilizer box, a scraper knife is bolted to the bottom of the fixing frame, and a liquid outlet is formed in the bottom of the fertilizer box. Clear water in the water cylinder is pushed by the piston to melt fertilizer in the fertilizer box, the problem that fertilizer in an existing flower fertilizer applicator cannot be automatically melted is solved,