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黑点银纹夜蛾属鳞翅目夜蛾科,是一种分布较广,食性较杂的害虫。1979年8月至1981年6月,从泰安市城郊东关大队豆田和南关大队的甘蓝上采集的自然患病死亡的黑点银纹夜蛾幼虫尸中分离到两株核型多角体病毒。为了筛选毒力较强的毒株供病毒制剂的生产和使用,对这两株病毒进行了室内活性比较试验。国外一些研究工作者曾就同一种昆虫中分离的不同株病毒间的活性进行了某些研究,其活性差别有的高达几十倍,也有的无明显差别,国内对中国棉铃虫Heliothis armigera Hibner核型多角体病毒的不同分离株之间的活性差别进行了比较研究,其不同分离株间的活性具有明显差别。关于黑点银纹夜蛾核型多角体病毒不同分离株间活性差别的比较试验尚未见报导。现将初步试验结果报导如下。
Spider mite Spider mite Lepidoptera Noctuidae, is a widely distributed, diet more complicated pests. From August 1979 to June 1981, two nuclear type polyhedrosis viruses were isolated from the naturally diseased Spodoptera litura larvae collected from the cabbage of the Dongguan brigade and the South Gate Brigade in the suburbs of Tai’an. . In order to screen virulent strains for the production and use of virus preparations, the two strains of viruses were tested for indoor activity. Some foreign researchers have carried out some researches on the activity between different strains of viruses isolated from the same insects, with the activity varying up to several times, and there is no obvious difference. In China, the Heliothis armigera Hibner nucleus Type polyhedrosis virus between different isolates of the activity differences were compared, the activity of different isolates with significant differences. There has been no report on the difference in activity between different isolates of S. copeporum nuclear polyhedrosis virus. The preliminary test results are reported below.