明确吡虫啉、啶虫脒等7种烟碱类杀虫剂对甘蓝蚜虫的毒力.采用浸渍法对7种烟碱类杀虫剂对甘蓝蚜虫的室内毒力测定.甘蓝蚜虫对啶虫脒的敏感性最高,LC50为1. 7566 mg/L,甘蓝蚜虫对吡虫啉的敏感性最低,其LC50为12. 2627 mg/L,七种烟碱类杀虫剂对甘蓝蚜虫的活性由高到低的顺序依次为啶虫脒> 噻虫嗪> 噻虫啉> 噻虫胺> 呋虫胺> 烯啶虫胺> 吡虫啉.啶虫脒、噻虫嗪对甘蓝蚜虫的活性较高,可以进行推广应用,但要密切注意这类药剂交互抗性的发展.%The purpose of this study was to determine the toxicity of 7 nicotinic insecticides such as imidacloprid and acetamiprid to cabbage aphids. Indoor toxicities of 7 nicotine insecticides to cabbage aphids were determined by dipping method. The sensitivity of cabbage aphid to acetamiprid was the highest, the LC50 was 1. 7566 mg/ L, the sensitivity of cabbage aphid to imidacloprid was the lowest, the LC50 was 12. 2627 mg/ L, the activity of seven nicotine insecticides to cabbage The activities of aphids from high to low were as follows: acetamiprid > thiamethoxam > thiacloprid > clothianidin > dinotefuran > nitenpyram > imidacloprid. Acetamiprid and thiamethoxam have high activities against cabbage aphids, which can be widely applied. However, close attention should be paid to the development of cross-resistance of these agents.
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