四十年前由于当时检验条件的限制,仅发现各类昆虫病毒47株,其中还包括由昆虫作媒介传递的病毒。截至1981年,世界各地已发现的昆虫病毒累计达1270种以上。我国最新材料报告发现的200余种昆虫病毒中,大部分为杆状病毒。应用昆虫杆状病毒防治害虫,经过近卅年的验证,已经从实验室的试验发展到较大规模的应用于田间、林区,取得了令人信服的实效,不 Forty years ago, only 47 strains of various types of insects were found because of the restrictions on the test conditions at that time. Among them, viruses were also transmitted by insects. As of 1981, 1270 or more insect viruses have been found in all parts of the world. Of the more than 200 species of insect viruses found in the latest material reports in our country, the majority are baculoviruses. Application of insect baculovirus control pests, after nearly a year of validation, has been developed from the laboratory test to a larger scale applied to the field, forest, and achieved convincing results, not