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质型多角体病毒(CPV)与Bt混用,可迅速降低赤松毛虫幼虫的取食量,提高杀虫效果。与单用CPV相比,处理后第5天幼虫的排粪量约为单用CPV的2/3～1/2,LT50值最大差3.6天,LT90值最大差6.9天。
The combination of protoplast polyhedrosis virus (CPV) and Bt can rapidly reduce the feeding amount of Larvae of Dendrolimus punctatus and enhance the insecticidal effect. Compared with the single CPV, the larval excretion of larvae on the fifth day after treatment was about two thirds to one half of the single CPV, the maximum difference of LT50 was 3.6 days, and the maximum difference of LT90 was 6.9 days.