First aid techniques and mechanisms for dying pine trees damaged by pine wilt disease.

This paper shows that the dying pine trees caused by Bursaphelenchus xylophilus will relive by the methods of first-aid with proper drugs .After mixed drug (nematocide insecticide)were injected into stem of dying pine trees , 83.3 % of dyingPinus massoniana and 75.0 % of dyingPinus thunbergii relived .On the practice of first-aid then relive , it proves that pine wilt is the result from the double factors of combining B . xylophilus with Monochamus alternatus .It is the basic reason of dying pine tree relive through killing larvae of M . alternatus with insecticide and killing B .xylophilus with nematocide .