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采用浸叶法测定了北京地区6个粘虫Mythimna separata(Walker)田间种群对5种不同类型杀虫剂的抗药性。结果表明:与相对敏感品系相比,6个田间种群对5种杀虫剂均表现出不同程度的抗性水平。其中,对氯虫苯甲酰胺(抗性倍数为1.314~4.213)、甲氨基阿维菌素苯甲酸盐(抗性倍数为1.000~4.385)和毒死蜱(抗性倍数为1.083~5.936)表现为敏感至低水平抗性;对虫螨腈(抗性倍数为1.355~20.80)和氯氟氰菊酯(抗性倍数为1.748~13.98)表现为敏感至中等水平抗性。因此,北京地区的粘虫防治应注重将氯虫苯甲酰胺、甲氨基阿维菌素苯甲酸盐和毒死蜱与虫螨腈或氯氟氰菊酯交替或轮换使用,以延缓抗药性的产生与发展。
The leaf resistance method was used to determine the resistance of five Mythimna separata (Walker) field populations to five different types of pesticides in Beijing area. The results showed that the six field populations showed different levels of resistance to five insecticides compared with the susceptible lines. Among them, for chloroquine benzamides (resistance multiple 1.314 ~ 4.213), emamectin benzoate (resistance multiple 1.000 ~ 4.385) and chlorpyrifos (resistance multiple 1.083 ~ 5.936) showed Sensitive to low level of resistance; the sensitive to the moderate level of resistance to acaron nitrile (resistance multiple 1.355 ~ 20.80) and cyhalothrin (resistance multiple 1.748 ~ 13.98). Therefore, the prevention and control of armyworm in Beijing should focus on the use of chloroquine benzamides, emamectin benzoate and chlorpyrifos alternated with rotifen or cyhalothrin to prevent the emergence of drug resistance And development.