吡蚜酮不同处理方法对竹茎扁蚜的毒力测定

Comparative Study on Pymetrozine's Toxicity to Pseudoregma bambusicola by Two Kinds of Bioassay Methods

为了明确杀虫剂行为生物学对其毒力表达的影响,通过竹茎浸渍法和在体喷雾法进行吡蚜酮的毒力比较研究。结果表明:在体喷雾法的毒力明显高于竹茎浸渍法,其LC50分别为33.38 mg/L、46.13mg/L。说明,吡蚜酮的行为生物学模式为靶标昆虫口腔、跗节及体壁综合摄入模式。

To explore insecticide behavioral biology effect on the expression of virulence,comparison of toxicities of pymetrozine were studied by stem dipping and body spraying method.The research results showed that the virulence of body spraying method was significantly higher than the stem dipping method,the LC50 were respectively 33.38 mg/L and 46.13 mg/L,the behavioral biology mode of pymetrozine is an integrated intake mode,targeting simultaneously at target insects＇ mouthparts,tarsus and integument.