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tao shu zhu guo hai chong de fa sheng ji fang zhi
Author(s): 
Pages: 57-58
Year: Issue:  1
Journal: Deciduous Fruits

Abstract: 桃树的蛀果害虫主要有桃蛀螟、梨小食心虫、桃小食心虫、桃象鼻虫、茶翅蝽5种.果实受害后,严重降低品质和经济效益;蛀害重的果实完全不能食用,造成丰产不丰收.对蛀果害虫的危害情况、发生规律及防治方法简介如下. 1 桃蛀螟 以幼虫蛀食果实并可转果危害,导致果实变黄脱落,对品质和产量影响极大.桃蛀螟一年发生2代,以老熟幼虫在树干翘皮缝中、土石块下、落叶上,玉米、高梁、葵花秆中等处越冬,次年4月开始化蛹,5月上中旬开始羽化.成虫白天隐伏,夜晚活动,有趋光性,产卵于枝叶茂密的桃果上或果与果连结处.幼虫孵化后,由果梗、果蒂部蛀入至果心危害,由果外蛀孔流出胶质,并排出褐色颗粒状粪便与流胶粘结,附贴于果面,果内堆满虫粪.老熟幼虫在结果枝及两果相连处结白色茧化蛹,也有在果内化蛹的.第2代成虫于6月下旬开始发生.
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