前言棉铃虫(Heliothis armigera(Hübner))是棉花的三大蛀虫之一,特别是从1970年以来,棉铃虫在我国各大棉区更是活动狂獗。经调查,棉铃虫为害严重的田,每百株虫卵量达1,300多粒,造成棉花严重损失。棉铃虫除为害棉花外,还为害玉米、高粱、小麦、绿肥、向日葵、蔬菜等作物。因此,如何防治棉铃虫,已成为当前的一个重要课题。国内外都试图从各方面解决这个问题,即研究高效低毒农药,以虫治虫,以菌治虫,以病毒治虫等。目前,对棉铃虫病毒的研究方面,已作了很多工作据文献报道,一种玉米夜蛾(Heliothis zea)核多角体病毒,已经分 Introduction Heliothis armigera (Hübner) is one of the three major moths of cotton. Especially since 1970, the cotton bollworm is very active in the major cotton areas of our country. After investigation, cotton bollworm serious damage to the field, the number of eggs per one hundred strains of 1,300 more than a grain, resulting in serious loss of cotton. In addition to damage cotton bollworm cotton, but also damage to corn, sorghum, wheat, green manure, sunflowers, vegetables and other crops. Therefore, how to control the cotton bollworm has become an important issue at present. At home and abroad are trying to solve this problem from all aspects, that is, research efficient and low toxicity pesticides to insects pests to bacteria pest control virus and other insects. At present, a lot of work has been done on the research of the cotton bollworm virus. According to the literature, a Heliothis zea nuclear polyhedrosis virus has been divided