松材线虫病属世界性检疫对象,是一种毁灭性病害。主要分布在日本、美国、加拿大、墨西哥、韩国、香港等国家和地区,我国江苏、安徽、浙江、广东、台湾等地都有发生。松材线虫病具有发病快、死树快、传播快的特点,且目前尚无较为有效的防治方法。松树一旦被侵染,3个月左右即可枯死,后果不堪设想。江苏疫区仅1982年至1989年就累计死树90万株,损失木材5万立方米,烧毁枝梢200多万 Pine wilt disease is a worldwide quarantine object, is a devastating disease. Mainly distributed in Japan, the United States, Canada, Mexico, South Korea, Hong Kong and other countries and regions, China’s Jiangsu, Anhui, Zhejiang, Guangdong, Taiwan and other places have occurred. Pine wilt disease with fast onset, fast dead tree, spread fast, and there is no more effective prevention and treatment methods. Pine trees once infested, 3 months or so dead, the consequences could be disastrous. Jiangsu Province only accumulated 900,000 dead trees from 1982 to 1989, lost 50,000 cubic meters of timber and burned more than 2 million branches