THE RELEASING PROPORTION OF STERILE MALE MOTH AND THE COMBINED EFFECTS OF CONTROLLING WILD SILKWORM IN FIELD EFFECT OF ~(60)Co-γ IRRADIATION ON MALE GERM CELL OF CHINESE CITRUS FLY Dacus citri THE EFFECT OF 60Co-GAMMAIRRADIATION ON THE CHROMOSOMES OF CHINESE CITRUS FLY Research on the Sterile Effect of Radiation on Monochamus alternatus