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复合型苜蓿银纹夜蛾核型多角体病毒制剂主要由苜蓿银纹夜蛾核型多角体病毒(AcNPV)和斜纹夜蛾核型多角体病毒(PlNPV)两株病毒毒株和苏云金杆菌(Bt)按一定比例复合而成,经单一型、复合型病毒制剂的毒力测定比较,获得增效比值为5.1～9.5的最佳配比,并以甜菜夜蛾为宿主进行扩大增殖形成雏型产品(SBN-3)。经田间试验表明,对甜菜夜蛾Spodoptera exigua Hübner、斜纹夜蛾Prodenia litura Fabricius、菜螟Hellula undalis Fabricius的防治效果达90％以上,对小菜蛾Plutella xylostella Linnaeus、菜粉蝶Artogeia rapae (Linnaeus)的防治效果达80％～85％以上。
The compound Autographa californica nuclear polyhedrosis virus preparation mainly comprises two strains of Autographa californica nuclear polyhedrosis virus (AcNPV) and Spodoptera litura nucleopolyhedrovirus (PlNPV) and Bacillus thuringiensis (Bt ) By a certain percentage of composite made by a single type of complex virus toxicity comparison to obtain the ratio of efficiency of 5.1 to 9.5 the best ratio and the beet armyworm as the host to expand the proliferation of the formation of prototype products (SBN-3). The field trials showed that the control efficacy against Spodoptera exigua Hübner, Prodenia litura Fabricius and Hellula undalis Fabricius was more than 90%, and the control effect on Plutella xylostella Linnaeus and Artogeia rapae (Linnaeus) 80% ~ 85% above.