不同种类赤眼蜂对田间玉米螟的防治效果比较

Keywords:

Trichogramma;  species; maize borer; control effect

分类号:

S435.132

DOI:

10.11942/j.issn1002-2767.2015.09.0069

文献标志码:

A

摘要:

为筛选对北方玉米螟防治效果较好的赤眼蜂种类，于2013-2014年，对玉米螟赤眼蜂、松毛虫赤眼蜂、螟黄赤眼蜂防治玉米螟进行田间试验，调查3个种类的赤眼蜂对玉米螟卵块的寄生率及对玉米螟的平均防治效果。结果表明：2013年，玉米螟赤眼蜂、松毛虫赤眼蜂、螟黄赤眼蜂对玉米螟卵块的寄生率分别为97.35%、71.06%、39.48%；2014年，玉米螟赤眼蜂、松毛虫赤眼蜂、螟黄赤眼蜂对玉米螟卵块的寄生率分别为98.79%、76.83%、42.66%，综合田间试验结果，2 a使用玉米螟赤眼蜂防治玉米螟均达到最佳防治效果，平均防效在95%以上。

Abstract:

In order to select the appropriate species of Trichogramma?which can effectively improve the control effect for maize borer,the field test of?Trichogramma ostriniae,Trichogramma dendrolimi?and Trichogramma chilonis?was carried out on the maize borer in 2013~2014,the parasitic rate of three species of Trichogramma?on maize borer egg masses and the average control effect were researched.The results showed that the parasitic rate of Trichogramma ostriniae,Trichogramma dendrolimi?and Trichogramma chilonis?on mzie borer egg were 97.35%,71.06% and 39.48% in 2013;the parasitic rate of Trichogramma ostriniae,dendrolimTrichogrammai,Trichogramma chilonis?on maize borer egg were 98.79%,76.83% and 42.66% in 2014.Comprehensing field test results,the use of Trichogramma ostriniae?against maize borer achieved the best control effect,average control effect was more than 95%.