Many achievements have been accomplished in forest protection against forest diseases and pests, and against forest fire. Comprehensive prevention system and ecological control technical measures have been developed against Dendrolimus punctatus, bamboo locust, Hippota dorsalis, Matsucoccus matsumurae, pine shoot insects, Saperda calcarata, Apocheima cinerarius, Dendroctonus valens, Hyphantria cunea, Gilpinia lipuensis, pine wilt disease, poplar canker, paulownia witch’s broom disease, bacterial wilt of eucalyptus and etc. Long-term and systematic research has been going on against Dendrolimus punctatus, and a system has been set up for the forecast, monitoring and control while the infected area in the trials has decreased by 90% or more; Highly virulent nuclear polyhedrosis virus of Apocheima cinerarius has been obtained, which shows a control effect of over 90%; The new species of Chouioia cunea is published, and the infection rate is reduced to 0.1% in the controlled area against Hyphantria cunea by release of Chouioia cune and nuclear polyhedrosis virus of Apocheima cinerarius. This research result has been applied in two thirds of the controlled area; The technique for the control of longicorn has been developed by the parasite natural enemy insect of Dastarcus helophoroides, the insect population is reduced by 86% when the eggs of Dastarcus helophoroides are released; The control measures against Omphisa fuscidentalis from the perspective of the ecological characteristic show an effect of over 90%; Poplar varieties have been developed with the resistance against poplar canker, and are used in production; The technique for deprivation of pathogen of paulownia witch’s broom disease gives detoxication effect of 100%; An early detection method of Bursaphlenchus xylophilus has been found, which offers the theoretic basis and method for the quarantine and prevention of dangerous biological invasion. The study on the buffering mechanism and effect of fire-preventing forest belts has yielded important results, which are used in the prevention of forest fire.

Controlling Hyphantria cunea by using Chouioia cune

The control of Monochamus alternatus

Poplar canker