不同世代发生区赤眼蜂防治二化螟效果差异分析  

Effects of Trichogramma on Chilo Suppressalis in Different Generation Occurrence Areas

作　　者：周淑香[1] 李丽娟[1] 毛刚 刘剑 孙康娜 李光雪 高月波[1] 鲁新[1] ZHOU Shuxiang;LI Lijuan;MAO Gang;LIU Jian;SUN Kangna;LI Guangxue;GAO Yuebo;LU Xin(Institute of Plant Protection,Jilin Academy of Agricultural Sciences,Gongzhuling 136100;Jinong High-tech Company Biological Control Branch,Gongzhuling 136100,China)

机构地区：[1]吉林省农业科学院植物保护研究所,吉林公主岭136100 [2]吉农高新技术公司生防分公司,吉林公主岭136100

出　　处：《东北农业科学》2021年第6期56-59,共4页Journal of Northeast Agricultural Sciences

基　　金：国家重点研发计划项目(2017YFD0201003、2017YFD0300606);吉林省科技发展计划重点项目(20180201036NY)。

摘　　要：在只对第1代二化螟进行防治,秋季进行防治效果调查的前提下,比较不同世代发生区赤眼蜂防治二化螟效果差异。发现1代发生区的防治效果调查值高于2代发生区,认为在2代发生区,只对第1代进行防治,第2代二化螟仍然会造成危害,导致赤眼蜂防治效果调查值偏低,应当对赤眼蜂防治效果的调查方法进行改进。在2代区用赤眼蜂对不同代数二化螟进行防治,发现1代和2代全防治的处理比只防治1代效果提高10%左右,并可以降低越冬活虫数,有效降低第二年的虫口数量,提议在2代区对1代和2代均进行防治。The control effect of Trichogramma on Chilo suppressalis in different generations occurrence areas was compared in Jilin Province.It was found that the survey values in one generation region were higher than that in two generations region.It is considered that only the first generation of Chilo suppressalis were controlled in two generations region,the second generation of Chilo suppressalis still gave rise to harm,resulted in the low survey values of Trichogramma control effect.Therefore,the investigation method of Trichogramma control effect should be improved.The control effect difference of treatments that both two generations treated by Trichogramma and the first generation treated only were also tested in two generations region.The results showed that the control effect of both two generations treatment was about 10%higher than the first generation treated only,and control both generations could reduce the number of overwintering live insects and effectively reduce the number of population in the second year,so it is suggested that both two generations of Chilo suppressalis should be controlled in two generations region.

关 键 词：水稻二化螟 世代分布 生物防治 赤眼蜂 

分 类 号：S476.3[农业科学—农业昆虫与害虫防治]