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室内毒力测定和田间药效试验证明，西维因对抗性棉蚜和棉铃虫有较好防效。其对棉铃虫的ＬＤ５０为１．７５０２μｇ／头，较对照药剂甲胺磷、马拉硫磷和氯氰菊酯的毒力弱；对棉蚜的ＬＤ５０为０．３０９４μｇ／头，较对照药剂的毒力强。田间防治棉蚜及在陕西、河北两地对棉铃虫的药效均在６０％以上，同对照药剂的药效相当。西维因对小菜蛾（深圳种群）的ＬＣ５０为４６５．０５７３ｍｇ／Ｌ，较对照药剂毒力强，田间防治菜青虫第１～７天的防效在８２．７％以上，与对照药剂无明显差异
Laboratory tests on indoor virulence and field efficacy showed that XIV was effective against cotton aphid and cotton bollworm. Its LD50 against Helicoverpa armigera was 1.7502μg / head, which was lower than that of the control agents methamidophos, malathion and cypermethrin. The LD50 against cotton aphid was 0.3094μg / head, which was higher than that of the control . Field control cotton aphid and in Shaanxi, Hebei, the efficacy of the two bollworm were above 60%, with the comparable efficacy of the control agent. The LC50 of civicidin to Plutella xylostella (Shenzhen population) was 465.0573mg / L, which was more virulent than that of the control. The control effect of cabbageworm from days 1 to 7 was above 82.7%, which was not significantly different from the control difference