Combined harvester for green Chinese onion seeds

A green Chinese onion seed combine harvester comprises a rack assembly, a power device, a harvesting head, a cyclone separator and a negative pressure conveying pipe. Wherein the harvesting head has a rubbing function on green Chinese onion spherical inflorescences, so that mature green Chinese onion seeds fall off from the green Chinese onion spherical inflorescences; the fallen green Chinese onion seeds and seed coats enter a cyclone separator through a negative pressure conveying pipe, the green Chinese onion seeds and the seed coats rotate along the inner wall of a cyclone separation cylinder, the green Chinese onion seeds rotate and fall down along the inner wall of the cyclone separation cylinder due to the small surface area-weight ratio, and the seed coats rotate and rise along the inner wall of the cyclone separation cylinder due to the large surface area-weight ratio; and finally, the green Chinese onion seeds are discharged from an air outlet of the cyclone separator, so that harvesting and impurit