摘要
本文报道释放中华卵索线虫防治粘虫,不同益害比的寄生效果,及田间防治试验结果。当益害比为100:1时,可取得60％的发生效果;200:1时,寄生率增加到76.4％。按益害比为400:1,释放侵染期幼虫,防治麦田一代粘虫,第3天调查校正寄生率71.7％;第5天增加到84.13％,对粘虫起到很好的控制作用。
During the spring of 1988, infective juveniles of Ovomermis sinensis were released into the wheat fields of Zhumadian Prefecture, Henan Province, for the control of the first generation armyworm. When the nematode was released at parasite:pest, ratios of 100:1 and 200:1, the parasitization rates of the armyworm larvae were 60% and 76.5%, respectively. When the ' releasing ratio was increased to 400:1, the parasitization rate was 71.7% on the third day after the release, and was 84.1% on the 5th day. These results merit the native mermithid nematode as a potential biological control agent of the armyworm.
关键词
中华卵索线虫
粘虫
生物
防治
线虫
Mvthimna separata Ovomermis sinensis Mermithidae entomopathogenic nematode augmentation
