Agricultural water and fertilizer irrigation device and method

The invention relates to the field of agricultural water and fertilizer irrigation, and discloses an agricultural water and fertilizer irrigation device and method.The four corners of the bottom of a base are fixedly connected with rolling wheels, the rear side of the top of the base is fixedly connected with a push rod, the center of the top of the base is further fixedly connected with an irrigation box, and the top of the irrigation box fixedly communicates with a liquid injection opening; water pumps are fixedly connected to the two sides of the irrigation box, fine adjustment mechanisms are installed on the front surface and the rear surface of the irrigation box, and a transmission mechanism is further installed in the irrigation box. The water pipe and the spray head can be driven to swing up and down through the fine adjustment mechanism, the irrigation range of the spray head can be increased, the irrigation requirement can be met in a short time, the irrigation efficiency is improved, the transmissi