调查了发生松树死亡的武汉市、黄石市、咸宁市等16点松材内的线虫种类。具长尾尖突的Bursaphelenchusmucronatus（Bm）是优势种，以新死树木材内群体数量较大。接种试验表明，Bm数量达到一定程度时，可以引起黑松和马尾松苗死亡。提出有必要对湖北各地的Bm的致病性作进一步测定。 The species of nematodes in 16 pine woods, such as Wuhan, Huangshi and Xianning where pine trees died were investigated. Bursaphelenchus mucronatus (Bm) with caudate tail is the dominant species, with a larger population within the tree of the new dead tree. Inoculation experiments showed that when the amount of Bm reaches a certain level, it can cause the death of Pinus thunbergii and Pinus massoniana seedlings. It is necessary to make further determination of the pathogenicity of Bm around Hubei.