梨小食心虫是我县梨的主要害虫，在梨、桃、李、杏等水果混栽区为害猖撅。据１９９８年在部分梨园调查，被害果率达８５．３％。其中烂果占１０％。 多年来，对梨小食心虫采取药剂防治，效果甚微。我们于６月下旬进行了套袋试验，果袋分自制纸袋、保鲜袋和食品袋３种。套袋果虫 Pear Moxibustion is the main pest in my county pears, Pear, peach, plum, apricot and other fruit mixed planting area rampant. According to a survey conducted in some pear parks in 1998, the rate of victimization reached 85.3%. Which rotten fruit accounted for 10%. Over the years, the small borer Pear to take chemical control, with little effect. We carried out the bagging test in late June. There are three types of fruit bags: homemade paper bags, fresh-keeping bags and food bags. Bagged fruitworms