松枯萎病是林业生产的一大威胁。1978年日本仅由患松枯萎病一项就使木材年损失量达2430000m~3,现已蔓延全国各地。比较新的被害地有山阴、北陆、中部高地、北关东和东北等。在这些较为高寒地区,以往被视为例外之处而现在却相当普遍地发生了。另外,该虫在法国东南部的地中海沿岸和美国的33个州也有发生并造成危害。目前在我国有些地区也陆续发现松枯萎现象。杨宝君(中国林科院林研所)收集了15个省市的死树和病害标本,发现有11个省市的标本中有大量线虫,并鉴定出4个优势种(见表)。为有助于该病的研究和防治,笔者在参考国内外有关文献的基础上,就其病原的传播媒介、致病机理和防治方法介绍如下,供参考。 Pine wilt is a major threat to forestry production. In 1978, Japan alone suffered from pine wilt disease annual loss of 2430000m ~ 3, has now spread throughout the country. Relatively new victims have Sanmin, Hokuriku, the central highlands, North Kanto and Northeast and so on. In these more alpine areas, which were previously treated as exceptions, it is now quite commonplace. In addition, the worm has also taken place in the 33 coasts of the Mediterranean Sea in southeastern France and the United States, causing damage. At present, some areas in our country have also gradually discovered the phenomenon of pine wilt. Yang Baojun (Institute of Forestry, Chinese Academy of Forestry) collected dead trees and disease specimens from 15 provinces and cities. A large number of nematodes were found in 11 provinces and cities and 4 dominant species were identified (see table). In order to contribute to the research and prevention of the disease, the author, referring to the relevant literature at home and abroad, based on the pathogen of the media, pathogenesis and prevention methods are described below for reference.