摘要
用菜青虫和小菜蛾幼虫对曼陀萝、蓖麻等6种植物的提取液进行了室内生物测定。结果表明:蓖麻提取液对菜青虫和小菜蛾幼虫均具有较强的拒食作用和胃毒作用,它们在48h的拒食率都在50%以上,在72h的拒食率均在80%以上。曼陀萝提取液的拒食作用较强,但胃毒作用和生长抑制作用却不太明显,其胃毒死亡率仅达到6.67%。
Extracts from 6 insecticidal plant species were tested for the insectic idal activities against third instar Pieris rapae and third-instar Plutella xylo stella.The results showed that extracts from Ricinus communis possessed high eff ectiveness of antifeeding and stomach poison.Extracts from Datura stramonium pos sessed high effectiveness of antifeedant,but low effectiveness on stomach poison and growth inhibition.
出处
《湖北农业科学》
北大核心
2004年第6期47-48,46,共3页
Hubei Agricultural Sciences
关键词
植物提取液
生物测定
菜粉蝶
小菜蛾
plant extracts
bioassay
Pieris rapae
Plutella xylostella
