云杉八齿小蠹是古北区松林中最具有毁灭性的小蠹虫。在其爆发时,能毁掉数以百万计的云杉。往往在侵害后一个月内便能将云杉致死。它与许多真菌存在着密切的相互关系。科学家已从被云杉八齿小蠹致死的云杉边材中分离出几种能引起蓝色污斑的真菌。其中包括长喙壳属 Ceratocystic 的若干种类。从蓝色污斑前沿分离得到常见的两种真菌是Ceratocystic polonica 和 C.penicillata.在6月中旬将它们接种到健康的云杉树杆上,结果 Spruce Beetle Beetle is the most devastating bark beetle in the Gubei pine forest. When it explodes, it can destroy millions of spruces. Spruce can often be killed within a month after the invasion. It is closely related to many fungi. Scientists have isolated several fungi that cause blue stains from spruce saplings that were lethal by spruce Among them are several species of the genus Ceratocystic. The two common fungi isolated from the front of the blue stain are Ceratocystic polonica and C. penicillata, which were inoculated onto healthy spruce tree stems in mid-June and the results