【摘要】 在田间比较了赤眼蜂种间(广赤眼蜂、螟黄赤眼蜂)和广赤眼蜂的不同群体间对菜粉蝶卵的寄生力。连续两年在不同地区进行了重复。结果表明,广赤眼蜂的LG-46、DH-9和DG-11等3个群体对菜粉蝶卵的田间寄生率均在63％以上,优于广赤眼蜂的其他群体和螟黄赤眼蜂。更多还原

【Abstract】 Results of the field studies conducted in two counties of Shaanxi Province during 1988 to 1989 revealed differences in parasitization of imported cabbage worm, Pieris rapae by different species or strains of Trichogramma. Among two species, Trichogramma evanescens and T. chilonis arid different strains of the former, three strains of T. evanescens (LG-46, DH-9, and DG-11) produced egg parasitization of over 63%, which was significantly higher than that by other strains of the species and by T. chilonis.更多还原