性诱剂在杏园梨小食心虫防治中的应用

Application of Sex Pheromone to Control Grapholitha molesta Busck in Apricot Orchard

【目的】为性诱剂在杏园防治梨小食心虫提供依据。【方法】利用梨小食心虫性诱剂对新疆库车杏园梨小食心虫进行了使用方法、最佳自制诱捕器种类、1hm2最适诱捕器数量及防治方法的研究。【结果】杏园梨小食心虫3个成虫羽化高峰期分别出现在4月下旬、6月中旬和8月下旬;在板式、管式、瓶式3种自制的诱捕器中,板式胶粘诱捕器的诱虫效果最好,其次是管式诱捕器,瓶式的较差;在发生量较小时诱捕器的数量以90枚/hm2为宜,但在实际推广应用中应随发生量的增大适当增加诱捕器数量;在防治试验中,迷向区的迷向率和防效分别为76.2%和77.78%,诱捕区的迷向率和防效分别为66.11%和90.75%,诱捕区的防治效果较好。【结论】在实际防治中使用诱捕器法为好。

[Objective]The present study was set to provide basis for controlling Grapholitha molesta Busck in Apricot orchard.[Method]Using Sex Pheromone to control Grapholitha molesta Busck in apricot orchard,the optimum type of traps,the right quantity traps per hectare and the rational control method in Xinjiang Kuche apricot orchard.[Result]The results show that the imagos have three eclasion peak periods,which are the last ten days period of April,the middle ten days period of June,and the last ten days period of August.The board-type trapper has the best effect in three type trappers made by ourselves,and followed by the pipe-type trapper and bottle-type trapper.The rate of mating disruption was 76.2% and66.11%,the control effect was 77.78% and 90.75%,repectively.Ninety trappers were used for per hectare when a small number of Grapholiha molesta Busck occurred.But when a number of Grapholitha molesta Busck were increased,the number of trappers should be increased correspondingly.[Conclusion]The trappers had better been used to control Grapholitha molesta Busck in practice.