Effect of sublethal dose of emamectin benzoate on growth and development of Helicoverpa armigera (Hübner) A mini review on effects of sublethal doses of insecticides on the sex pheromone communication system of insects 两种亚致死剂量的农药对亚洲玉米螟化学通讯系统的干扰作用 SYSTEMIC ANALYSIS OF SUBLETHAL EFFECT OF INSECTICIDE ON PLUTELLA XYLOSTELLA AND ITS PARASITOID DIADEGMA EUCEROPHAGA