Keywords Nucleopolyhedroviruses;Spodoptera litura;Spodoptera exigua;Approaches for improvement;Peritrophic matrix;virus genotypes;synergism mechanism;

• 昆虫核型多角体病毒;斜纹夜蛾;甜菜夜蛾;增效途径;围食膜;基因型;增效机理;