不同剂型杀虫剂对小菜蛾的防效比较

氯虫苯甲酰胺、氰氟虫腙、溴虫腈、甲维盐和丁醚脲是小菜蛾常用防控药剂，5 种杀虫剂乳油EC和悬浮剂SC的表面张力室内毒力及盆栽菜和田间持效期测定结果表明，EC 制剂的表面张力值均小于SC 制剂室内杀虫活性也普遍高于SC 制剂，但盆栽菜和田间持效期测定显示SC 制剂室外药效稳定性优于EC 制剂。说明同种药剂EC 制剂和SC 制剂各有优势建议应用时，结合不同环境条件选择合适的剂型。

Control effect comparison of different formulationsof insecticides on Plutella xylostella (L.)

Chlorantraniliprole, metaflumizone, chlorfenapyr, ProclaimR (banleptm) and diafenthiuron are commoninsecticides used for controlling diamondback moth, Plutella xylostella. In this paper, the experiments of surface tensiontest, bioassay analysis in lab, effective duration evaluation in potted and field vegetables were corried out to study the effectof different formulations (EC and SC) of 5 insecticiedes on P.xylostella. The results showed that surface tension values of allEC formulations were lesser than SC formulations, and toxicity of all EC formulations against to P.xylostella were also betterthan SC formulations. But effect of SC formulations had better stability than EC formulations in the open environment. Allthe results indicate that different formulations of the same insecticide have different advantages; we should select theappropriate formulation according to the different environmental conditions