The invention discloses a leaf surface spraying device for
agricultural plant protection fertilization, and relates to the technical field of
crop leaf fertilization, the leaf surface spraying device comprises a base, four wheels are mounted on the base, a fertilization box is fixedly connected to one side, close to a
handrail, of the top of the base, and a
piston air cylinder is mounted at the top of the fertilization box; two fertilization hoses are fixedly connected to the outer surface of the
piston air cylinder, arc-shaped fertilization plates are fixedly connected to the ends, away from the
piston air cylinder, of the two fertilization hoses, two inserting grooves are formed in the outer surfaces of the two arc-shaped fertilization plates, four spraying heads are arrayed on the inner walls of the two arc-shaped fertilization plates, and a driving
assembly is fixedly connected to the outer surface of the wheel. A double-spraying positioning
assembly is fixedly connected to the outer surface of the fertilizing box, a shielding
assembly is arranged on the base, an adjusting assembly is arranged in the shielding assembly, and natural wind is shielded through a first shielding hopper and a second shielding hopper, so that atomized liquid
fertilizer can directly act on leaf surfaces of crops more efficiently; therefore, the problem that natural wind affects foliage dressing of the device is solved.