【摘要】 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。更多还原

【Abstract】 Effects of environmental conditions on the quantitative change of thenature population, the asian corn borer (Ostrinia furnacalis (Guenee)), werestudied by using life tables, Varley-gradwell’s diagram and Morris-Watt’s regressionanalysis. The results showed that the key stage affecting population dynamics of1st generation was the hiding larv stage and that of 2nd generation was egg stage.The key factor affecting population dynamics of 1st generation was the przeditionand natural death of the larv on the hiding larv stage and that of 2nd generation wasChrysopa sinica larv fed on egg in egg stage.更多还原