松林火灾对松材线虫病流行关系的研究

The Relations between the Fire of Pine Forest and the Epidemic of Pine Wilt Disease

松林火灾与松材线虫病的发生和传播有着密切的关系。从火烧松林内羽化的松墨天牛 ,平均每头可携带 736 4条松材线虫 ,侵入松林后就会导致松材线虫病的发生和蔓延。火烧松林诱发松材线虫病可分为当年发病型、次年发病型和隐匿发病型。治理火烧松林能有效地控制松材线虫病的发生与传播。根据研究结果 ,提出了

Close relations existed between the pine forest fire and the epidemic spread of pine wilt disease (PWD).The adults of Monochamus alternatus emerged from the fire injury pine trees carried an average of 7 364 nemateodes,which will infect the healthy pines and causes the mortality of pine and epidemic spread of PWD.There are 3 types of PWD associated with the fire of pine forest,i.e.PWD occurs in the same year when forest is burned,PWD occurs in the next year after forest fire,and occurs several years later.It is an effective method for controlling PWD by clear cutting all the fire dead pines parasitized by beetles and nematodes according to the results of studies.4 new methods can be used in the practice of breaking up the combination of PWD and fire of pine forest.