<正>研究了肿腿蜂的野外生物学、释放技术、防治效果及在大面积防治松材线虫病中的应用 ,发现 :( 1 )释放技术是以点株式放蜂法为优 ,该法对天牛幼虫的校正寄生率为 48.68% ,明显地高于点式放蜂法的 37.5 0 % ;( 2 )最佳放蜂时间为 7月份 ,此时放蜂的校正寄生率为 37.5 0 %～66.82 % ,明显地高于 8月份放蜂寄生率 2 8.75 % ;( 3)放蜂密度以 5 0 0 0头 /hm2 为宜 ,试区对天牛幼虫的校正寄生率为 48.68% ,其防效与 1 0 0 0 0头 /hm2 的 5 2 .86%相近 ;( 4 )经多点、多年和 5 4 0hm2 的大面积放蜂试验 ,其寄生效果均稳定在 33.33%～ 66.82 % ,试区松材线虫病的死树减退率达 98.0 %。试验证明 ,采用管氏肿腿蜂防治松材线虫病的技术是可行的。

By studyng the biology, release techniques and control effect to Monochamus alternatus of Scleroderma guani Xiao et Wu,the results show that:(1)Scleroderma guani can complete its propagation on the larva of Monochamus alternatus in Jiangsu;(2)The optimum release technique is the model of release Scleroderma on single dying tree or weak tree in one point per hectare release 80～100 trees.After 1 month the parasitic results are checked.The rate of parasite of Scleroderma guani to the larva of pine sawyer beetle(PSB)can reach 48.68%.It is higher than the rate of parasite of 37.50% to ues the model of point release method;(3)The optimum release wasp time is in the second ten days of July.Its parasitic rate of Scleroderma guani to the larva of PSB can reach 37.50%～66.82%,which is higher than that in August;(4)The optimum density of release wasp is 5 000 wasps/hm 2 .The rate of parasite is 48.68%.It is very near release 10 000 wasps/hm 2,which the rate of parasite is 52.86%; (5)After releasing wasp in the area of 540 hm 2 the rate of parasite can get 33.33%～66.82%.The Rate of dead trees which was caused by pine wood nematode( Bursaphelenchus xylophilus ) (PWN)reduced 98.0% after release wasp in the test field.The test results show that Scleroderma guani can effectively control PSB & PWN in test field.