释放管氏肿腿蜂防治松墨天牛试验

摘要

To evaluate the control effects of Scleroderma guani on Monochamus alternatus, the S. guani female adults were released on the M. alternatus larvae of the infested pine logs both in doors and in forests. The results showed that the control effects increased with the increasing number of S. guani released. The releasing of S. guani should be carried out in early July in the middle of Jiangxi Province, and the later the releasing time, the worse the effects. The corrected parasitism rates could reach to 24.71%­29.17%, when mass releasing of S. guani insects at the quantity of 10 000 per hm2 into a pine forest in Xingan County. The results revealed that the releasing of S. guani was effective to reduce the M. alternatus populations, and thus could serve as auxiliary measures to control pine wood nematode ( Bursaphelenchus xylophilus) in fields.%通过林间释放管氏肿腿蜂研究该天敌防治松墨天牛效果。结果显示，释放管氏肿腿蜂防治松墨天牛效果与放蜂量密切相关，随着接蜂量增加，对松墨天牛幼虫的寄生率提高；7月初在赣中地区放蜂防治效果最好，随着时间推移防效明显降低。林间以10000头/hm2释放量防治松墨天牛，校正寄生率为24.71%~29.17%。这些结果说明：释放管氏肿腿蜂能有效降低松墨天牛虫口密度，可以作为松材线虫病综合治理的辅助措施在生产中应用。