Water and fertilizer integrated precise fertilization control system

The invention discloses a water and fertilizer integrated precise fertilization control system. The system mainly comprises a fertilizer storage tank, an electromagnetic flowmeter, a pressure sensor, an electric valve module, a screw pump module and an electric control module. The electric valve module comprises a first electric valve and a second electric valve, the screw pump module comprises a pump body and a motor, and the electric control module comprises a main control unit, a power supply subsystem, a man-machine interaction module and a variable-frequency conversion speed regulation device. The fertilizer storage tank is used for storing liquid fertilizer, the screw pump module pumps out the liquid fertilizer in the fertilizer storage tank and discharges the liquid fertilizer into a main water pipeline, the electromagnetic flowmeter collects the amount of applied fertilizer, a power supply subsystem of the electric control module provides required electric energy for the system, the main control unit