摘要
五十年代,国外开始研究菜粉蝶(Pieris rapae,以下称菜青虫)颗粒体病毒,采用喷雾防治、建立种群和诱发流行病等方法,一般均能取得良好效果。苏联七十年代生产了菜青虫颗粒体病毒制剂。我国1972年在广州分离到此种病毒,1977年正式报道。
Outbreaks of epizootics caused by granulosis virus(GV)of Pieris rapae were recorded from Guangzhou,Beijing,Baoding,Wuhan,Chengdu,Hengyang,Shanghai,Jinan and Hefei in 1972-1978.The inclusion bodies of the virus are ovoid or elliptical in shape,150-350×250-450 nm in size,while the virions are 40-75×170-330 nm in size.The LC_(50)for the fourth instar larvae is 10^(-6.57)to 10^(-5.81)g larvae/ml.The crude or partially purified preparations of GV were used to control the cabbageworms.In 1981,over 52,000 mu of vegetable crops were treated with GV.It caused a high incidence(70-98%)of virulent disease in the larvae of P.rapae.The density of larvae population of P.rapae on the GV-treated plots was lower than that on the DDVP-,Diterex-or Diazinon-treated plots.Owing to the high efficacy and low cost of GV preparation,it can be used as an important means in the integrated control of cabbageworms.
出处
《中国农业科学》
1982年第6期6-14,共9页
Scientia Agricultura Sinica
