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中国生物防治学报 ›› 2021, Vol. 37 ›› Issue (2): 356-361.DOI: 10.16409/j.cnki.2095-039x.2021.03.028

• 研究简报 • 上一篇    

棉铃虫卵龄和密度对松毛虫赤眼蜂寄生效能的影响

李耀发, 赵玉敬, 安静杰, 党志红, 潘文亮, 宋健, 高占林   

  1. 河北省农林科学院植物保护研究所/河北省农业有害生物综合防治工程技术研究中心/农业农村部华北北部作物有害生物综合治理重点实验室, 保定 071000
  • 收稿日期:2020-01-10 发布日期:2021-04-14
  • 通讯作者: 高占林,学士,研究员,E-mail:gaozhanlin@sina.com。
  • 作者简介:李耀发,博士,研究员,E-mail:liyaofa@126.com
  • 基金资助:
    河北省农林科学院创新工程项目(2019-1-1-3);河北省现代农业产业技术体系(HBCT2018040204);国家重点研发计划(2016YFD0300705)

Effects of Egg Age and Density of Helicoverpa armigera on Parasitical Efficiency of Trichogramma dendrolimi

LI Yaofa, ZHAO Yujing, AN Jingjie, DANG Zhihong, PAN Wenliang, SONG Jian, GAO Zhanlin   

  1. Plant Protection Institute, Hebei Academy of Agricultural and Forestry Sciences/IPM Center of Hebei Province/Key Laboratory of Integrated Pest Management on Crops in Northern Region of North China, Ministry of Agriculture and Rural Affairs, Baoding 07100, China
  • Received:2020-01-10 Published:2021-04-14

摘要: 为进一步优化赤眼蜂田间释放技术,提高松毛虫赤眼蜂对棉铃虫的田间防治效果,本文开展了棉龄虫卵龄和密度对松毛虫赤眼蜂寄生效能影响的研究。结果表明,松毛虫赤眼蜂对棉铃虫1~2日龄卵偏好性明显高于0~1日龄和2~3日龄卵。不同“蜂-卵”比结果表明,随着“蜂-卵”比值增加,赤眼蜂单蜂寄生效能逐渐下降,从14.33粒/蜂降至0.73粒/蜂,而棉铃虫卵被寄生率逐渐上升,从17.92%上升至73.33%。综合两者的关系,发现在“蜂-卵”比为1∶20时,两者出现了交汇,此时,赤眼蜂单蜂寄生效能约7.50粒/蜂,棉铃虫卵被寄生率约为37%。基于此,得出松毛虫赤眼蜂对棉铃虫的田间防治应综合“蜂-卵”比、田间棉铃虫种群密度及落卵量等指标来确定田间释放赤眼蜂数量,以达到棉铃虫田间最佳防治效果。

关键词: 松毛虫赤眼蜂, 棉铃虫, 寄生效能, 卵寄生蜂, 天敌昆虫

Abstract: To optimize the field release technology of Trichogramma dendrolimi and to further improve the Trichogramma control of the cotton bollworm, effects of egg age and density of Helicoverpa armigera on parasitical efficiency of T. dendrolimi was evaluated in the laboratory. The results showed that T. dendrolimi preferred 1-2 day eggs over 0-1 day and 2-3 day eggs. With the increase of ‘wasp to egg’ ratio, the parasitic efficiency of individual female wasp declined gradually from 14.33 eggs/per wasp to 0.73 eggs/per wasp, whereas the parasitism rate of cotton bollworm eggs rose gradually from 17.92% to 73.33%. When the ‘wasp to egg’ ratio was 1:20, the parasitic efficiency of female wasp and the parasitism rate of cotton bollworm eggs converged at 7.50 eggs/per wasp and 37%, respectively. The ‘wasp to egg’ ratio can serve to improve the field control of the cotton bollworm if it is considered in determining the releasing density of T. dendrolimi together with the adult population density and egg density.

Key words: Trichogramma dendrolimi, Helicoverpa armigera, parasitic efficiency, egg parasitoid wasps, natural enemy

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