Fecha de publicación: 22/03/2022 Fuente: Wipo Tobacco Agriculture The utility model belongs to the technical field of plant protection machinery, and particularly relates to a self-propelled water and fertilizer spraying machine. Comprising a spraying mechanism, a driving mechanism and a spraying control mechanism, the spraying mechanism comprises a walking chassis and a liquid medicine box connected with a hydraulic pump, the hydraulic pump is connected with a pressure pump through a first hose, a hydraulic device is arranged on the periphery of the pressure pump and connected with a spraying machine through a hydraulic rod, and a spraying disc is arranged at an opening of the spraying machine; the driving mechanism comprises a seat, a control device and a driving device which are fixed on the walking chassis are arranged in front of the seat, and a protective cover is arranged above the driving mechanism; the spraying control mechanism comprises a control device and a hydraulic pump controller arranged below the seat, the hydraulic pump controller is connected with a hydraulic pump, the hydraulic pump is connected with a pressure pump through a first hose, and the pressure pump is connected with the spraying disc through a second hose. In pesticide spraying operation in the fields of gardens and agriculture, large-capacity and self-propelled spraying and adjustable continuous watering can be achieved, the working efficiency is improved, and the labor cost is saved.