Precise fertilization can truly achieve the purpose of saving water, increasing efficiency and increasing production, and vigorously improve the scientific management level of agricultural water-saving irrigation. The control center can control a head controller or field controller individually. The monitoring center can display and control the irrigation situation of the entire irrigation area in real time. It is connected to the head controller through GPRS communication. The irrigation plan is sent from the control center to the head controller, which stores and executes the instructions issued by the control center. According to the irrigation plan Real-time control of the opening of the field controller. The head controller itself comes with a simple irrigation management software, which can issue an irrigation plan through the head controller. The controller can monitor parameters such as pump conditions, pool water level, pipeline pressure, water supply flow and electricity, and can control the inlet gate of the canal , water pump, filter flush and fertilization valve, etc. At the same time, it has fault monitoring and alarm functions such as undervoltage, phase loss, phase sequence, pipeline pressure loss, excess irrigation or unplanned water use