摘要
研究表明，用人工卵繁殖的松毛虫赤眼蜂和螟黄赤眼蜂对夏玉米田２～３代玉米螟均有较好的控害效果。放蜂区校正卵粒寄生率为６５．４４％～６８．１６％；百株玉米蛀孔数和雄穗被害较对照分别减少６６．６７％～７０．３７％和７３．３３％～８０．００％。防治玉米雌穗上棉铃虫的效果，螟黄赤眼蜂要明显好于松毛虫赤眼蜂（２０．０％），虫口减退率达７１．１％。另外还研制了适合人工卵赤眼蜂田间放蜂的放蜂器，出蜂率达９０％以上。
Results of field experiments using Trichogramma dendrolimi and T.chilonis reared on artificial host egg to control summer generations corn borer Ostrinia furnacalis were satisfactory. The egg parasitism was 65.44%￣68.16%. In comparison with the chemical control CK, the percentage of borer hole and broken tassel was reduced 66 67%￣70.37% and 73.33%￣80.00%, respectively. The control effect of Helicoverpa armigera on corn by T.chilonis (71.1%) was significantly better than that of T.dendrolimi (20.0%). A releasing container for Trichogramma reared on artificial host eggs was designed and the emergence rate was over 90%.
出处
《中国生物防治》
CSCD
1999年第3期97-99,共3页
Chinese Journal of Biological Control
基金
国家"九五"攻关项目
关键词
人工卵
赤眼蜂
玉米害虫
控害效果
放蜂器
Trichogramma dendrolimi
T.chilonis
artificial host egg
insect pests of corn
control effect
