苹果蠹蛾危害石榴有何特点?怎样防治?

2025-03-25 12:02:16
推荐回答(1个)
回答1:

苹果蠹蛾又名食心虫。分布于新疆全境和甘肃敦煌。为对内对外重要检疫对象。以幼虫蛀食果实,多从果实胴部蛀入,深达果心食害籽粒,虫粪排至果外,有时成串挂在果上,造成大量落果。

1年发生2~3代,以老熟幼虫作茧在树皮缝隙、分枝处和各种包装材料上越冬。成虫昼伏夜出,有趋光性。成虫羽化后不久即可产卵,卵多散产于果树上层果实及叶片上,卵期5~25天。初孵幼虫多从果实梗洼处蛀入,幼虫期30天左右,幼虫可转果危害。

防治要点:

①加强检疫。对从新疆出境的苹果、石榴、桃、杏、梨等果实及包装物,严格检疫,严防该虫传播。

②农业防治。保持果园清洁,随时清理地下落果;冬春季刮刷老树皮,并用石灰水涂干,消灭越冬幼虫;树干基部束草把或破布,诱集幼虫入内化蛹捕杀之。

③药剂防治。在卵临近孵化时,喷洒2.5%溴氰菊酯乳油3000倍液或20%哒嗪硫磷乳油1000倍液、20%氰戊菊酯乳油3000倍液、10%氯氰菊酯乳油2000倍液、20%戊菊酯乳油2000倍液等。

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