【摘要】 采集鉴定出青海云杉母树林害虫的天敌昆虫 135种 ,其中寄生性昆虫 54种 ,捕食性昆虫 81种。查到天敌昆虫省内新记录 6 5种 ,查清了主要害虫天敌种类。种实害虫优势种云杉球果小卷蛾的寄生蜂 14种 ,总寄生率 10 %～ 6 0 % ,主要为曲姬蜂、马尾姬蜂和球果平胸姬小蜂 3种。在结实大年结合采种收集球果 ,于结实小年释放寄生蜂 ,可提高害虫的天敌寄生率 36 .5%～ 38.2 % ,降低虫果率 55.1%更多还原

【Abstract】 One hundred and thirty five species (including subspecies) of natural enemies of the insect pests in the seed stands of Picea crassifolia Kom.in the Qilian Mountains in Qinhai Province were collected and identified.Among them 54 species were parasitoids and 81 predatory insects.The major species of the natural enemies of the important pests and the 14 species of the parasitoids of Pseudotomides strobibellus, which is the predomitory species of the seed and cone pests,were found.The total parasitic rate is 10%～60%,primarily by Scambus sp., Megashyssa sp.and Hyssopus nigritulus. Collecting the damaged seed cones in the on year and releasing parasitoids in the off year can increase the parasitic rate to 36.5%～38.2% and decrease the rate of damaged seed cones to 55.1%.更多还原