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５种杀虫剂对烟青虫的毒力试验表明：质量分数为 ８０％～ ８３％的高效氯氰菊酯和 ８６．７％的氰成菊酯分别稀释２ ０００和１０００倍对烟青虫的防治效果较好，ＬＣ_（５０）分别为０．０３２ ２μｇ·头~（－１）和０．０５８ ２ μｇ·头（－１），久效磷和乙酸甲胺磷稀释１０００倍的效果次之，吡虫啉效果最差．
Five kinds of insecticides on tobacco budworm virulence test showed that: mass fraction of 80% to 83% of the beta-cypermethrin and 86.7% of the cypermethrin diluted 2000 and 1000 times better against tobacco budworm control effect , Respectively. The results of LC 50 were 0.032 2 μg · head -1 and 0.058 2 μg · head -1, respectively. The results showed that the effects of monocrotophos and methamidophos 1000 times dilution were the second, difference.