Irrigation device for hydraulic engineering

The utility model belongs to the technical field of hydraulic engineering, and particularly relates to an irrigation device for hydraulic engineering, which comprises a frame, a water tank fixedly mounted at the top of the frame, a water inlet fixedly mounted at the top of the water tank, a plug fixedly mounted at the top of the water inlet, and a fertilizer box fixedly mounted on the right side of the water inlet. A feeding pipe is fixedly mounted at the bottom of the fertilizer box, a first valve is arranged on the outer surface of the feeding pipe, and a water spraying device is fixedly mounted on the left side of the top of the water tank. During irrigation, water in a water tank is pumped through a water pump, then the water is sprayed out of a water spraying head through a hose, during adjustment, height adjustment is conducted through a full-automatic telescopic column, water is made to conduct spraying irrigation on the distance, and then through a second motor in a protection shell, the output end of