二、用昆虫病毒防冶害虫 昆虫病毒较早应用于森林害虫防冶,进而引起了对其它害虫防治的大量试验,目前已有50余种昆虫病毒进行过大田防治试验,均得到好的防治效果。在病毒害虫防冶中应用较多的是NPV和GV,CPV和颗粒体病毒也用于治虫。 1、用核型多角体治虫 核型多角体病毒中应用较广的是棉铃虫的NPV,用该种病毒防治棉铃虫。(1)我国生产的棉铃虫制剂 Second, the use of insect viruses anti-insect pest insect virus earlier applied to the forest pest prevention and cure, which led to a large number of other pest control trials, there are more than 50 kinds of insect viruses have been field control trials, are good control effect . In the application of virus pest control more NPV and GV, CPV and granulovirus are also used for pest control. 1, with nuclear polyhedrosis worm nuclear polyhedrosis virus is widely used in cotton bollworm NPV, with the virus control bollworm. (1) China’s production of cotton bollworm preparations