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当前农村中老龄果园面临着更新换代的任务,而不少果园采用桃树进行补替过渡,形成了苹果、梨、桃的混交园,这一种植形式造成梨小食心虫发生发展更加严重,下面仅就梨小食心虫对桃树新梢的危害加以说明。
Currently, the middle-aged orchards in rural areas are faced with the task of upgrading. Many of the orchards use peach trees for replacement and transition. Apple, pears and peaches are formed in the mixed orchard. On the pear heartworm Peach new shoots to illustrate the dangers.