Nutrient proportioning device for nori seedling culture

The utility model discloses a nutrient proportioning device for nori seedling culture, which comprises a mixing tank, a discharge pipe is fixedly connected to the outer side of the mixing tank, a centralizing pipe is fixedly connected to the middle of the upper side of the mixing tank, a plurality of supporting plates are fixedly connected to the upper side of the mixing tank, proportioning units are arranged on the upper sides of the supporting plates, and the mixing tank is fixedly connected with the mixing tank. And the proportioning unit comprises a proportioning box, the proportioning box is fixedly connected to the upper side of the supporting plate, a piston plate is arranged on the inner side of the proportioning box, and a moving rod is fixedly connected to the outer side of the piston plate. By arranging the supporting plate, the proportioning box, the moving rod, a piston plate, a connecting plate, a spring, a sliding block, a top block, a limiting groove and a limiting rod, the position of the sli