本文对广州桑园土壤分离的病原线虫进行了形态观察和杂交试验,鉴定此线虫为苹果蠹蛾线虫广州品系Steimsrnoma car pocapsoeGZ。通过与目前世界上广泛应用的苹果蠹蛾线虫苏联品系Agriotos比较,显示出广州品系无论是侵染寄主的能力、数量、还是在土壤中迁移的速度、深度和耐高温的能力,均优于Agriotos品系,预示了这个品系在害虫生物防治上具有较大的应用潜能。 In this paper, Morphological observation and hybridization experiments were carried out on the pathogenic nematodes isolated from the mulberry field in Guangzhou. The nematode was identified as Steinermacium pocapsoe GZ. Comparing with Agriotos, a strain of Soviet nematode Caterpillar codling nematode widely used in the world at present, it shows that Guangzhou strain is superior to Agriotos in ability and quantity of host infection, and its speed, depth and temperature tolerance in soil migration Lines, indicating that this line has great potential in pest biological control.