摘要
以甜菜夜蛾为试虫，采用点滴法测定了增效醚（PBO）、顺丁烯二酸二乙酯（DEM）、磷酸三苯酯（TPP）、氮酮（NT）、快速渗透刑T对高效氟氰菊酯、毒死蜱以及灭多威的增效作用。结果表明，点滴PBO 1h后再点滴高效氯氰菊酯增效效果最好，达7．9倍，而1．5h后效果开始下降；当PBO用量在10-20μg/头时。增效效果呈递增趋势，用量超过40μg/头增效效果开始下降。NT对高效氧氰菊酯的增效效果随添加量的增加而提高，但达到一定程度后增效效果不再增加，最大增效倍数为4．4倍，但对毒死蜱、灭多威几乎无增效作用。DEM对毒死蜱、灭多威的增效作用较好，增效倍数分别达5．3倍、4．5倍。TPP对3种药剂的增效效果较差，仅对毒死蜱的增效效果可达2．5倍。快速渗透剂T仅对毒死蜱有较好的增效效果．达2．7倍．
Synergism between 5 synergists （ PBO, DEM, TPP, NT and T） and 3 pesticides （ beta-cypermethrin, chlorpyrifos and methmoyl） was measured in Spodoptera exigua （Hübner） by spot test. Highest synergism （7.9 times） was observed between PBO and beta-cypermethrin within one hour after spotting, and the effect declined thereafter. Synergism increased with the dosage of PBO with the range of 10 to 20 μg/larva and decreased at a dosage of 40 μg/larva. The synergism between NT and beta-cypermethrin increased with the dosage of NT, the maximum being 4.4 times. However, NT showed virtually no synergistic effect to ehlorpyrifos and methmoyl. DEM showed satisfactory synergism with chlorpyrifos and methmoyl, the maximum effect being 5.3 and 4.5 times, respectively. TPP showed but little synergistic effect to chlorpyrifos （ 2.5 times）. T had some synergistic effect to chlorpyrifos only （ 2.7 times）.
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450-453,共4页
Journal of Southwest Agricultural University
基金
重庆市科委攻关资助项目(7468)
重庆市自然科学基金重点资助项目(CSTC2005BA1014)
关键词
甜菜夜蛾
增效剂
增效作用
Spodoptera exigua （Htibner）
synergist
synergism
