The invention discloses a fertilization device allowing dynamic adjustment of the fertilization amount as well as an adjustment method. The fertilization device comprises a
fertilizer box, wherein thebottom of the
fertilizer box is connected with a base, a feeding hopper is connected to the top of the
fertilizer box, a motor is arranged at the top of the fertilizer box, a rotating shaft is connected to the motor, the rotating shaft is sequentially connected with a crushing wheel, a
brush and a stirring rod from top to bottom, a filter net is arranged in the fertilizer box, baffles penetrate through two sides of the fertilizer box, the baffles are connected with control rods, a screw rod penetrates through the control rods, rotation directions of two ends of the screw rod are opposite, a
discharge hopper is fixedly connected to the lower part of the fertilizer box, a
discharge pipe is connected to the bottom of the
discharge hopper, the right side of the top of the base is fixedly connected with an adjustable push
handle, and a damping moving
assembly is arranged at the bottom of the base. The distance between the two baffles can be adjusted through rotation of the screw rod, so that the fertilization amount is adjusted, meanwhile, the motor drives the crushing wheel to rotate, large-grained fertilizer and caked fertilizer can be crushed, and a user can adjust the height of theadjustable push
handle according to the height of the user.