Special cover suitable for selfing pollination of corn selfing line in greenhouse

The utility model relates to a special cover suitable for selfing pollination of a corn selfing line in a greenhouse, which comprises an annular base, an annular top plate and a plurality of support rods, and the top of the annular base is fixedly provided with a plurality of insertion barrels distributed along the circumferential direction; the lower end of the supporting rod is connected with the inserting cylinder in an inserted mode, and the upper end of the supporting rod is detachably and fixedly connected with the annular top plate. An annular rail is fixedly arranged on the bottom face of the annular top plate, a plurality of lifting hooks are connected to the annular rail in a sliding mode, a light-transmitting curtain is hung on the lifting hooks, the annular top plate, the annular base and the transparent curtain define a space for containing potted corn inbred line plants, and air holes penetrating through the annular top plate in the vertical direction are formed in the inner side of a circle whe