Precise application equipment for open field vegetable fertilizer and pesticide and control system of precise application equipment

The invention discloses an open field vegetable fertilizer and pesticide precise application device and a control system thereof. A frame is connected with a main supporting frame and a side supporting frame through a spraying rod height adjusting piece, and the lower portion of the main supporting frame and the lower portion of the side supporting frame are connected with an air conveying spraying rod spraying assembly through a transverse moving mechanism; the air-assisted spray boom spraying assembly comprises a wind wheel motor, centrifugal fan impellers are connected to the two ends of the wind wheel motor, a guide cover is arranged along the outer contours of the centrifugal fan impellers, an air conveying rod and a spray boom are arranged in an air outlet channel of the guide cover, air output connectors are arranged on the air conveying rod at intervals, spray nozzles are arranged on the spray boom at intervals, and fan-shaped air caps are arranged on the spray nozzles in a sleeving mode; the guide co