Cold-proof device for dragon fruit seedling cultivation

The cold-proof device for dragon fruit seedling cultivation comprises a protection frame and a lifting buckle plate, a positioning bolt is arranged on the outer wall of the protection frame, a sliding groove is formed in the inner wall of the protection frame, a sliding column is attached to the inner wall of the sliding groove, a fixing mechanism is welded to the lower end of the outer wall of the sliding column, heat preservation cotton adheres to the inner wall of the protection frame, and the fixing mechanism is welded to the lower end of the outer wall of the sliding column. A windproof mechanism is installed on the outer wall of the protection frame, a clamping groove is formed in the upper end of the outer wall of the protection frame, a clamping block is attached to the inner wall of the clamping groove, and a breathable net is bonded to the upper end of the outer wall of the clamping block. Through the arrangement of the protection frame, the sliding grooves and the sliding columns, the height of the