Blocking system for preventing deichthyophthirius gramineus from climbing trees

The utility model discloses a blocking system for preventing carex baccans from climbing trees in the technical field of forest protection, which comprises a semi-circular cover A and a semi-circularcover B. Two ends of the semi-circular cover A and the semi-circular cover B are detachably connected into a whole to form an annular protective sleeve wrapping the outer side of a trunk. The rubber ring is arranged between the protective sleeve and the trunk; the adhesive tape surrounds the protective sleeve for at least one circle; and the insect sticking layer is arranged at the lower part of the adhesive tape. The protective sleeve is connected to the outer side of the trunk through the rubber ring in a sealed mode, the adhesive tape and the insect sticking layer are arranged on the outerside of the protective sleeve, the drosicha corpulenta can be effectively prevented from climbing up branches along the trunk, meanwhile, a large number of paramecium is stuck to the insect sticking layer so as to prevent the