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›› 1988, Vol. 24 ›› Issue (1): 34-40.

• 论文及研究报告 • 上一篇    下一篇

应用拟青霉等真菌防治油松毛虫

武觐文   

  1. 北京林业大学
  • 收稿日期:1986-03-24 修回日期:1900-01-01 出版日期:1988-02-25 发布日期:1988-02-25

USE PAECILOMYCES FARINOSUS AND BEAUVERIA BASSIANA TO CONTROL OVERWINTERING DENDROLIMUS TABULAEFORMIS

Wu Jinwen   

  1. Beijing Forestry University
  • Received:1986-03-24 Revised:1900-01-01 Online:1988-02-25 Published:1988-02-25

摘要: 本文讨论了应用粉拟青霉(Paecilomyces farinosus)以及球孢白僵菌(Be-auveria bassiana)防治越冬油松毛虫(Dendrolimus tabulaes formis)。该虫在石块下、土缝、草丛或落叶层中越冬,而这些地方具有较高的湿度,适宜真菌侵染。上述两种真菌的孢子在5℃下可以萌发,粉拟青霉比白僵菌更适宜低温,因此适宜用来防治越冬油松松毛虫。秋季施撒于林地石块下的上述真菌制剂,过冬后在次年春季采回,经平板稀释培养计数,其中活孢子含量只稍有降低。在越冬期间,施撒菌剂的林地,越冬松毛虫死亡率约为70%。

Abstract: The results of controlling overwintering Dendrolimus tabulaeformis by Paecilomyces farinosus and Beauveria bassiana are discussed.D.tabulaeformis overwinters under stones,in the soil and in a thick growth of grass where the higher humidity and lower temperature are combined of suitable for fungal infection.The spores of the two fungi can geminate at 5℃,P.farinosus is more suitable for the control of overwinteing D.tabulaeformis because it is more suitable for low temperature than B.bassiana.In autumn,put fungal preparation of wheat bran under the stones,in spring of next year took some samples for test.According to the counts of plate dilution culture,the spore contents were only decreased slightly. The mortality of the pest can reach about 70% during winter time.