菜青虫颗粒体病毒,是由感病菜青虫体内提取的一种病源物,系杆状病毒属。用颗粒体病毒防治菜青虫,具有杀虫效果好,使用方法简便,成本低廉,无残毒和污染,基本上不感染菜青虫天敌,安全可靠等优点,深受群众欢迎,大有推广价值。菜青虫是白菜、甘兰、萝卜等十字花科蔬菜的主要害虫,每年发生3～4代,重叠为害,十分猖 Pieris rapae granulosis virus, is a pathogen derived from susceptible cabbage body, baculovirus. With cabbage virus prevention and control cabbage worm, with insecticidal effect, easy to use, low cost, no residue and pollution, basically does not infect cabbage insect natural enemies, safe and reliable, etc., welcomed by the masses, great promotional value. Pieris rapae cabbage, cabbage, radish and other cruciferous vegetables, the main pests, occurring 3 to 4 generations each year, overlapping damage, very rampant