Quantitative fertilization device for agricultural planting

The invention provides a quantitative fertilization device for agricultural planting, and relates to the technical field of agricultural planting, the quantitative fertilization device comprises a mobile platform, a quantitative tank, a fertilization assembly and a transmission assembly, the top of the mobile platform is provided with a fertilizer storage tank, the bottom of the side edge of the fertilizer storage tank is connected with a conveying pipeline, and the tail end of the conveying pipeline is connected with a feeding channel; the top of the quantitative tank is fixed below the moving platform through a first supporting rod, and moving rolling wheels are installed at the bottoms of the two ends of the moving platform. According to the fertilizing device, the transmission assembly is arranged at the bottom, and when the movable platform synchronously moves through external traction equipment, the transmission assembly can be triggered and the fertilizing assembly at the rear end can be driven to comp