Abstract: In order to select the best combination of sex pheromone lures and traps， effects of four kinds sex pheromone lures， four kinds traps and two heights on trapping efficiency of Grapholitha molesta（Busck） adults were conducted in pear orchards in Tonglu County， Zhejiang province in this paper. The results showed trapping effect of triangle\| and ship\|shape traps was extremely significantly higher than those of cage\| and water basin\|shape traps， in which no significant difference in trapping effect between triangle\| and ship\|shape traps， and between cage\| and water basin\|shape traps was found， respectively. But the order of relative trapping efficiency was triangle\|>ship\|>cage\|>water basin\|shape traps. There was no obvious difference in trapping effect among four kinds of sex pheromone lures， but the higher relative trapping efficiency was the product of Pherobio Technology Co. Ltd. No significant difference in trapping efficiency of lures placed at the height of 1 m and 2 m was also found. It was concluded that the strongest attracting efficiency to G. molesta was the combination of triangle\|shape trap and the sex pheromone lure from Beijing Pherobio Technology Co. Ltd. The conclusion will provide a scientific basis for effectively monitoring and controlling the population of the insect pest by rational utilization of the sex pheromone for G. molesta.

Key words: Grapholitha molesta, trap, lure, height, trapping efficiency