Abstract:The sex pheromone plus virus dispenser technique is a type of autodissemination with which pest insect population levels can be controlled by using insect sex pheromone and insect virus. The feasibility of the technique has been confirmed by the experiments in the wind tunnel. The results of the field tests showed that under the conditions of hanging one dispenser for every five Paulownia elongata(S. Y. Hu)trees, traps set up in the centre of the 300m×300m treated plot caught male moths having visited the dispensers and being contaminated by the virus every day during the test period 29. 2% of virgin females set up in the centre of the treated plot were contaminated with the virus by mating with the males. The larval CVNPV disease mortality reached 73. 2% in the larvae emerged from the eggs laid by the contaminated females.Therefore, the field tests demonstrated the feasibility of the sex pheromone plus virus dispenser technique under the field conditions.