The utility model discloses a fertilization uniformity's agriculture fertilizer injection unit, including conveying pipe, conveying pipe has cup jointed the inlet pipe in the top, the storage case hasbeen cup jointed on the top of inlet pipe, the bottom of conveying pipe inner wall just is located the below fixedly connected with distributing block of inlet pipe, the equal fixedly connected withslide in the left and right sides of conveying pipe inner wall bottom, and relative one side of two slides respectively with minute stream block's left and right sides fixed connection. The utility model discloses an improvement to the transfer gear, conical hopper's bottom is located the annular, when passing the material mouth and is removing to the conical hopper under, in fertilizer conveyingto the biography material mouth, conveying to the fertilizer that passes the material mouth moves under the restriction of stopper, when 30 degrees angles are extremely personally submitted with ground to mouthful removal of biography material, fertilizer falls into ground, to pass a material mouthful equidistance sets up in the annular, thereby it can scatter by even quilt to have guaranteed fertilizer, thereby when solving the traditional approach fertilization, inhomogeneous problem is just scattered to the inefficiency.