天敌对落叶松绶尺蠖的种群调节作用  

THE REGULATION OF NATURAL ENEMIES TO THE POPULATION OF ZETHENIA RUFESCENTARIA MOTSCH

作　　者：岳书奎[1] 王志英[1] 岳烨[1] 刘家志[1] 高玉梅[1] 栾新大 李秀章[1] 杨权[1] 崔相臣 

机构地区：[1]东北林业大学,黑龙江省鸡西市林业局,黑龙江省鸡东县林业局

出　　处：《东北林业大学学报》1995年第1期28-33,共6页Journal of Northeast Forestry University

基　　金：黑龙江省"八五"攻关课题

摘　　要：落叶松绶尺蠖的天敌共有２２种．其中寄生性天敌１６种；捕食性天敌４种；病原微生物２种。寄生性天敌在落叶松绶尺蠖的低密度区内的寄生率为５．０％；在中密度区内的寄生率为１６．７％；在高密度区内的寄生率为２１．０％。蚂蚁的捕食率为３．０％。由核型多角体病毒导致的死亡率在５９．０％～７５．０％，白僵菌引起的死亡率在３０．０％左右。由于这些天敌的综合调控作用使落叶松绶尺蠖种群密度下降到经济允许水平以下，但是，寄生性天敌昆虫作用缓慢，常常在落叶松绶尺蠖的中或低密度区内发挥作用，仅在一定水平上抑制害虫，当落叶松绶尺蠖的种群数量超过寄生性昆虫的调节能力时，主要是核型多角体病毒使该害虫的种群数量降低到经济允许水平以下．从而控制了该害虫的猖獗危害。There are twenty-two species of natural enemies of Zethenia rufescentaria Motsch., sixteen species of parasitoids, four species of predators, two species of microbial pathogen. The parasitic percentage is 5% in Low-density area. 16. 7% in middle-density area and 21. 0% in high-density area respectively. The mortality of pupae caused by ants is 3. 0%. The mortality of larvae caused by nuclear polyhedrosis virus (ZrNPV) is 59. 0% ～ 75. 0%; The mortality of larvae and pupae caused by Beauveria bassiana is 30. 0%. The population density of the pest can be decreased below the economic tolerate level owing to the regulation of the natural enemies.The Parasitic insects are likely to play an important role when the population is in low and middle densitys but the effects are very slow, so they can control the population in a certain degree. It is first reduced below the economic tolerate level by nuclear polyhedrosis virus when the population is beyond the ability of regulation of parasitic insects so that the outbreak can be avoided.

关 键 词：天敌 落叶松绶尺蠖 种群调节 

分 类 号：S763.302[农业科学—森林保护学] S763.712.2[农业科学—林学]