Water and fertilizer integrated device

The utility model discloses a water and fertilizer integrated device which comprises a machine frame and idler wheels arranged on the periphery of the bottom of the machine frame, a fertilizer box is arranged at the upper end of the machine frame, a conical discharging hopper is arranged in the middle of the lower end of the fertilizer box, a fertilizer discharging device is arranged at the lower end of the conical discharging hopper, and a fertilizer discharging shaft of the fertilizer discharging device is rotationally arranged on the machine frame. A first fertilizer discharging driven chain wheel and a second fertilizer discharging driven chain wheel are arranged on the fertilizer discharging shaft, an impeller supporting rod is arranged at the rear end of the rack, one end of the impeller supporting rod is rotationally arranged on the rack through an upper rotating shaft, and a bearing seat is arranged at the other end of the impeller supporting rod; an impeller shaft is rotationally arranged in the bear