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tao dai li huang fen ya de zong he fang zhi ji shu
Author(s): 
Pages: 55-56
Year: Issue:  1
Journal: Deciduous Fruits

Abstract: 套袋有效改善了梨果的外观品质,降低了农药残留,也隔离了部分害虫对果实的直接危害,但同时也为个体小的梨黄粉蚜创造了适宜的生长环境.2013年齐河县梨果受黄粉蚜的危害率达到40%.笔者在齐河县殷屯梨园、锦绣千村梨园进行该虫的防治试验,选择不同药剂、不同施药时期、不同用药量进行防治,探索了套袋梨果的黄粉蚜防治技术. 1 梨黄粉蚜发生规律 梨黄粉蚜又叫梨黄粉虫,食性单一,只危害梨果,群集于果肩、果柄及萼洼处危害,严重时整个果面呈黄粉状.该虫喜温暖干燥、喜阴忌光,成虫活动能力差,因果袋恰好为其营造了良好的生活环境,故套袋梨果受害严重.
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