昌平苹果园旋纹潜叶蛾发生动态及其寄生蜂调查

昌平苹果园旋纹潜叶蛾发生动态及其寄生蜂调查(5900字)
摘 要: 对旋纹潜叶蛾及其寄生蜂发生动态进行了系统调查。6月初至9月初，每日采集标本叶片30放入养虫笼，每两天观察一次出蜂情况及羽化情况，系统记录采集时间和成虫羽化时间、数量；鉴定幼虫寄生蜂种类。调查发现，旋纹潜叶蛾成虫在每月的月底为成虫发生高峰期；在6~9月的每个月初，发现大量旋纹潜叶蛾幼虫开始孵化并取食树叶。调查旋纹潜叶蛾在有机苹果园的发生动态及其幼期寄生性天敌的种类，为寄生蜂特别是姬小蜂等用于旋纹潜叶蛾的生物防治提供实际依据；发现的主要幼虫期寄生蜂种类有：姬小蜂科、茧蜂科、黑卵蜂科、蚜小蜂科和跳小蜂科。保护利用幼期寄生蜂有可能将苹果园内旋纹潜叶蛾种群密度控制在经济阈值水平。
关键词：旋纹潜叶蛾，寄生蜂，有机苹果园，生物防治。

Investigation of growth dynamics and parasitoids of Leucoptera scitella Zell in Changping apple orchard
Abstract：The author systematically surveyed the growth dynamics and parasitoids of Leucoptera scitella Zell.Collected specimen leafes 30,put them into cages to observe the situation, systematically recorded the times and the numbers，then identify the parasitoids. In this paper, five families of natural enemies of insects in Leucoptera scitella Zell have been found,they are: Eulophidae((Hymenoptera: Chalcidoidea), Braconidae , Scelionidae, Aphelinidae and Encyrtidae. host foraging especially for such small bee's for spin lines Leucoptera scitella Zell biological control of providing practical basis; Protection of host foraging is probably going to young period apple park spin lines Leucoptera scitella Zell population density control in economic threshold level.
Key words：Leucoptera scitella Zell； parasitoids；organic apple orchard；biological control