The utility model relates to the technical field of protective bags, and discloses a poplar top
grafting head changing protective bag which comprises a transparent bag, a telescopic bag opening is formed in the transparent bag, an elastic
rubber ring is fixedly connected in the telescopic bag opening, a drawing
bandage is arranged in the telescopic bag opening, the drawing
bandage is arranged in the telescopic bag opening in a penetrating mode, and the elastic
rubber ring is fixedly connected with the elastic
rubber ring. A ventilation
assembly is arranged in the transparent bag, the ventilation
assembly comprises a ventilation
pipe, the outer wall of the ventilation
pipe is fixedly connected to the interior of the transparent bag, a plurality of hydrophobic
layers are fixedly connected to the interior of the ventilation
pipe, and a plurality of ventilation holes are formed in the interior of the ventilation pipe. The ventilation pipe penetrates through the transparent bag, and the ventilation holes distributed in the
annular array in the inner wall of the ventilation pipe continuously promote
air exchange inside and outside the bag, so that the effect that air in the protection bag can efficiently circulate is achieved, and the problems that air circulation in the protection bag is insufficient,
water vapor accumulation in the bag is aggravated, and a high-
humidity environment is formed are solved. The normal
breathing of the
grafting part can be inhibited.