Application Of Insect Enimies In Major Forest Pest Control In Mount Tai

1Application of Scleroderma guani Xiao et WuScleroderma guani Xiao et Wu，belongs to Hymenoptera, Bethyloidea, Bethylidae, is animportant insect enimy of small longhornebeetles and young larvae of large longhornebeetles.Control of Monochamus alternatus Hope and Semanotus bifasciatus Motschulsky was tested,the results are as follows:Optimal ratio is1:6~10Semanotus bifasciatus Motschulsky and wasps with monoclonalmethod.Monoclonal method is better than point method while contrlling of Monochamusalternatus Hope. Effect use in July when the beetle is young is better than one in August whenit is elder. Effect was not significant with2different density of wasp, suggesting that wecould use5000wasps/ha when the beetle is lower density.2Application of Calosoma maximoviczi MarzCalosoma maximoviczi Marz, have a large body, Rapid action, agile activity, abilesearch capibility, can prey many pests in Coleoptera and Hymenoptera. It Adapt to theenvironment, widely distribute, has rich resources, has an important value in use. Controllingof larvae under tree of Acantholyda posticalis Matsumura was tested, The results show that:controlling effect are28%,60%when2beetles,8and10beetles in network room,Respectively.3Application of Thanasimus lewisiWe found A large number of Thanasimus lewisi when Trapping Semanotus bifasciatusMotschulsky. Controlling effect of Semanotus bifasciatus Motschulsky, Phloeosinus aubei,Tomicus piniperda with Thanasimus lewisi was tested, the results are as follows: Controllingeffect to Semanotus bifasciatus Motschulsky, Phloeosinus aubei, Tomicus piniperda is above10%, about30%,38.5%, Respectively.4Application of Dastarcus helophoroides (Fairmaire)Dastarcus helophoroides (Fairmaire), is a only effective natural enemy of largelonghornebeetles, can kill its hosts in6-8days. Its controlling effect to Apriona swainsoni(Hope) was tested, The results show that: The controlling effect of Releasing adults and eggsis better than one of Releasing adults only at the end of June. The controlling effect is better incomplex environment and little human disturbance.