Quantitative packaging equipment for carbon-based compound fertilizer

The invention discloses carbon-based compound fertilizer quantitative packaging equipment, and belongs to the technical field of fertilizer packaging equipment. When an opening supporting mechanism is closed, one end of a bag opening of a packaging bag is clamped on a first clamping part, two second clamping parts are used for clamping the two sides of one end of the bag opening of the packaging bag correspondingly, the opening supporting mechanism is opened, and then the packaging bag is sealed; the first clamping part is close to the rotating shaft to pull the packaging bag, a bag opening slides along the second clamping parts, the first clamping part and the two second clamping parts open the bag opening of the packaging bag, and the bag bottom of the packaging bag abuts against the base. A plurality of positions, close to one end, of a bag opening of a packaging bag are clamped through the opening expanding mechanism, when the opening expanding mechanism is opened, the multiple clamping positions are far