Water and fertilizer integrated device

The utility model relates to the technical field of agricultural irrigation equipment, in particular to a water and fertilizer integrated device which comprises a water conveying pipeline, a mixing pipeline is installed in the middle of the water conveying pipeline, the mixing pipeline is connected with the water conveying pipeline through a flange, and a fertilizer filling assembly is connected to the outside of the mixing pipeline and comprises a fertilizer storage tank and a weighing tank. The fertilizer is added according to the water flow speed in the water conveying pipeline after weighing is completed, the process is controlled by the host, and the flow speed of the fertilizer in the feeding pipe is set and adjusted according to the total amount of irrigation water, time and the water flow speed. The stirring process is omitted, the liquid fertilizer is directly injected into the water conveying pipeline according to the proportion, the irrigation efficiency is higher, and the input cost of equipment c