Big tree root water and fertilizer feeding device capable of adjusting flow velocity

The utility model relates to the technical field of greening engineering nursery stocks, in particular to a big tree root water and fertilizer applying device capable of adjusting flow velocity, which comprises a base, a water tank, a connecting rod and a pesticide storage box, connecting rods are symmetrically and fixedly connected to the surface of the outer side of the water tank, and a pesticide storage box is installed at the front end of the surface of the center of the outer side of the water tank. Through sliding of a moving plate in a sliding groove and cooperation of springs symmetrically arranged at the bottom of the moving plate, when fertilizer and pesticide need to be applied to trees, a certain amount of fertilizer and pesticide can be automatically provided, manual adding by workers is avoided, and through cooperation of a rotating rod arranged in a water tank and stirring blades, when fertilizer and pesticide are applied to the trees, the fertilizer and pesticide can be automatically added to