摘要
采用虫体浸渍法测定了增效剂PBO,DEM,TPP对辛硫磷、顺式氯氰菊酯、虫螨腈的增效作用。结果表明,DEM对辛硫磷有显著增效作用,PBO对顺式氯氰菊酯、虫螨腈有显著增效作用。定量测定了增效剂PBO,DEM,TPP对甜菜夜蛾(Spodoptera exigua)3龄幼虫多功能氧化酶脱甲基作用,谷胱甘肽-S-转移酶,羧酸酯酶的抑制作用。结果表明,增效剂剂量在一定范围内与酶抑制率呈正相关关系;当剂量超过一定范围时,酶抑制率保持在一定水平,不再随剂量增加而递增,甚至随剂量增加而下降。
Synergism of three synergists （ PBO, DEM and TPP ） to three insecticides （ phoxim, aiphacypermethrin and chlorhenapyr ） was tested with the dipping method. DEM showed a high synergism to phoxim, and PBO to aiphacypermethrin and chlorhenapyr. The effects of the 3 synergists on the enzymes of 3＇d instar larvae of Spodoptera exigua were studied and the results showed that in a certain range of concentration, the inhibition rate of the enzymes were positively correlated with synergist rate. Beyond that range, the inhibition rate sloped rising and began to drop instead.
出处
《西南农业大学学报（自然科学版）》
CSCD
北大核心
2006年第3期475-477,482,共4页
Journal of Southwest Agricultural University
关键词
甜菜夜蛾
增效剂
增效作用
抑制率
Spodoptera exigua
synergist
synergism
inhibition rate
