Fertilizer packing machine capable of achieving quantitative discharging

The fertilizer packer comprises a base, the top of the base is fixedly connected with a support, one side of the support is fixedly connected with a storage bin, the top of the storage bin is fixedly connected with a bin top cover plate, the bottom end of the storage bin is connected with an electric valve through a flange, and the outer wall of the top of the bin top cover plate is fixedly connected with a motor. The output end of the motor is in key connection with a rotating shaft, the rotating shaft penetrates through the bin top cover plate and extends into the storage bin, the outer wall of the rotating shaft is fixedly sleeved with a plurality of stirring rods, the top of the base is fixedly connected with two electric push rods, and the tops of the telescopic ends of the two electric push rods are jointly and fixedly connected with a supporting ring. The inner wall of the bin top cover plate is fixedly connected with a laser radar, and the outer wall of the top of the bin top cover plate is fixedly co