摘要
Abstract
Leaf diping method was used to determine toxicities of 7 types of pesticides (chlorpyrifos, betacypermethrin, spinosad, emamectin benzoate, abamectin, tebufenozide, diafenthiuron) against field population and relatively sensitive population of Diamondback moth, Plutella xylostella L.. Results showed that five pesticides had different levels of resistance to the field population of Plutella xylostella except for chlorpyrifos and diafenthiuron. Tebufenozide had the highest degree of resistance, with virulence multiples 6.17 times;Abamectin had the minimum degree of resistance, with virulence multiples 2.62 times. Compared with relatively sensitive population, Chlorpyrifos toxicity multiples to the field population was 0.58, while Diafenthiuron’s virulence in field populations was almost the same to field population. LC50 of Chlorpyrifos, betacypermethrin, spinosad, emamectin salt, Abamectin, tebufenozide, and diafenthiuron to field population were listed as follows: 39.098 3 μg/mL, 382.908 4μg/mL, 5.414 5 μg/mL, 1.291 8 μg/mL, 8.480 7 μg/mL, 250.561 9μg/mL, and 104.221 1μg/mL, respectively.关键词
小菜蛾/抗性/毒死蜱/高效氯氰菊酯/多杀菌素/甲维盐/阿维菌素/虫酰肼/丁醚脲Key words
Plutella xylostella/resistance/chlorpyrifos/betacypermethrin/spinosad/emamectin benzoate/bamectin/tebufenozide/diafenthiuron分类
农业科技
