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3种杀虫剂对松阿扁叶蜂的田间药效

2017-08-13王新峰孙冬迎杨会玉

安徽农业科学 2017年17期

王新峰 孙冬迎 杨会玉

摘要[目的]筛选防治松阿扁叶蜂的有效药剂。[方法]采用小区试验研究不同杀虫剂对松阿扁叶蜂不同龄期幼虫的田间药效。[结果]施药后72 h,对于1龄幼虫,噻虫啉微囊悬浮剂的防治效果达94.7%~96.9%;高效氯氰菊酯的防治效果达92.6%~94.9%;多杀霉素的防治效果为86.8%~889%。对于2龄幼虫,噻虫啉微囊悬浮剂的防治效果达89.7%~93.0%;高效氯氰菊酯的防治效果达882%~90.4%;多杀霉素的防治效果为81.4%~83.3%。对于3龄幼虫,噻虫啉微囊悬浮剂的防治效果达88.9%~91.0%;高效氯氰菊酯的防治效果达87.1%~89.2%;多杀霉素的防治效果为81.1%~81.9%。[结论]噻虫啉对松阿扁叶蜂幼虫均有较好的防治效果,且最佳防治时期为1龄幼虫期。

关键词松阿扁叶蜂;杀虫剂;田间药效

中图分类号S763.43文献标识码A文章编号0517-6611(2017)17-0131-02

Abstract[Objective] Insecticides were screened out for controlling Acantholyda posticalis.[Method] The field efficacy of different insecticides on the larvae of A. posticalis was studied by plot test.[Result] After 72 hours,the best control effects of thiacloprid against A. posticalis of the 1st instar larvae were between 94.7% and 96.9%.For the 2nd instar larvae, the best control effects of thiacloprid against A. posticalis were between 89.7% and 93.0%.For the 3rd instar larvae, the best control effects of thiacloprid against A. posticalis were between 88.9% and 91.0%.[Conclusion] Thiacloprid can be applied for controlling the larvae of A. posticalis.And the best control period of A. posticalis is the 1st instar larvae.

Key wordsAcantholyda posticalis;Insecticides;Field efficacy

作者簡介王新峰(1973—),男,山东桓台人,高级工程师,从事森林保护及森林培育研究。

收稿日期2017-04-12

松阿扁叶蜂(Acantholyda posticalis)属膜翅目扁叶蜂科,是松树的重要食叶害虫之一,广泛分布于山东、山西、黑龙江等地[1]。该虫在不同松树上的发生程度存在较大差异,油松、赤松、黑松、樟子松、红松发生较重[2]。

鲁山森林以松林、刺槐林等为主,2006年7月,在林场第二营林区杨峪林片首次发现松阿扁叶蜂危害,2008年该虫已扩散到各营林区[3]。鲁山林场松阿扁叶蜂1年发生1代;越冬幼虫于3月下旬开始化蛹,4月23日前后开始羽化;5月10日前后成虫开始大量羽化,并开始产卵,5月25日前后达到产卵盛期,5月下旬幼虫大量孵化并进入为害期,幼虫共4龄,6月20日前后老熟幼虫开始下树,能够在树冠下土层中安全越冬[4]。……

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