From the absolute value of control effect, "Priority of the pathogen inoculation" means the disease has happened in the practice, the case is not meaning for controlling the pine needle blight.

This was beneficial to cooperative role of the mentioned two antagonists in plant disease control, and also showed that two antagonists had combination possibility in biocontrol of pine blight.

Pine wilt disease, Bursaphelenchus xylophilus is a serious disease of pines in Zhoushan city Zhejiang province. It was dealt with occurrence. distribution and control of B. xylophilus.