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通过虫期生命表方法,对亚洲玉米螟自然种群数量变动进行了Var-ley-Gradwell K-图示分析和Morris-Watt相关回归分析。结果表明影响亚洲玉米螟自然种群数量变动的关键虫期,1代为低龄幼虫潜藏期,2代为卵期。影响亚洲玉米螟自然种群数量变动的主导致死因子,1代为低龄幼虫潜藏期的天敌捕食及自然死亡因子,2代为卵期的中华草龄捕食因子。
The variation of natural population of Asian corn borer was analyzed by Var-ley-Gradwell K-diagram and Morris-Watt correlation analysis by worm life table method. The results showed that the number of the population of Asian corn borer changes in the number of key stages, the first generation of young larvae latent period, the second generation of the egg. The dominant lethal factor affecting the natural population change of Asian corn borer was the first generation of natural enemies and the natural death factor of the young larvae in the latent period, and the second generation was the predation factor of the Chinese grass age in the egg stage.