Fecha de publicación: 23/12/2022 Fuente: Wipo "precision agriculture" The utility model belongs to the technical field of precision agriculture, and particularly relates to a precision agriculture automatic irrigation and fertilization device which comprises a mixing box, a servo motor is installed on the left side face of the mixing box, and an output shaft of the servo motor penetrates through the left side face of the mixing box to be fixedly connected with the left end of a stirring paddle. The right end of the stirring paddle is rotationally connected with the right side face of the inner wall of the mixing box, an accurate feeding assembly is arranged on the upper surface of the mixing box, water needed by irrigation is added into the mixing box through a liquid inlet pipe, the amount of water entering the mixing box is controlled through a graduated scale b, and fertilizer is placed through a measuring hopper; the amount of fertilizer in the measuring hopper is accurately controlled through the transparent graduated scale a, the valve b is rotated, the fertilizer in the measuring hopper enters the mixing box through the feeding pipe, then the proportion of the fertilizer and water entering the mixing box is accurately controlled, and the situation that the proportion of the fertilizer in a water and fertilizer mixture is unbalanced due to manual mixing is avoided.