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松材线虫病(Bursaphelenchus xylo-philus(Steiner et Buhrer 1934)Nickle1970)是松萎焉病的病原体,以松褐天牛(Monochamus aiternatus Hope)为主要传播媒介,并随病枝、材转运而加速扩展蔓延.该病最早于1905年在日本九州长崎发现,现在美国、法国、加拿大、朝鲜、香港、台湾等国家和地区,都有松材线虫病的危害.我国于1982年在南京中山陵发现病树,近几年病害迅速发展,已波及南京市近郊6县及江苏镇江、安徽马鞍山等地,为害面积20万亩以上,累计病死树70余万株(本市于1985年发现病树,从1986～1988年为害面积1.0万亩左右,累计病死松树约2.23万株).该病除危害黑松(Pinus thunbergii)外,寄主范围已扩大到黄松(P.thubergii×massoniana)、红松(P.koraiensis)、海岸松(P.pinastcr)、赤松(P.densiflor)、白皮
Pine wood nematode (Bursaphelenchus xylo-philus (Steiner et Buhrer 1934) Nickle1970) is the pathogen of wilting disease, with Monochamus aiternatus Hope as the main transmission medium, The disease was first discovered in Nagasaki, Kyushu, Japan in 1905 and is now endangered by pine wilt disease in the United States, France, Canada, North Korea, Hong Kong, Taiwan and other countries and regions. Diseases, the rapid development of disease in recent years, has spread to 6 counties in suburban Nanjing and Zhenjiang in Jiangsu Province, Anhui Ma’anshan and other places, the damage area of more than 200,000 mu, a total of more than 700,000 dead trees (the city found in 1985, From 1986 to 1988, the damage area was about 10,000 hectares, and a total of about 23,300 pine trees were accumulated. Besides the Pinus thunbergii, the host range extended to P. thubergii × massoniana, P. koraiensis, P. pinastcr, P.densiflor,