【摘要】 以林间调查为基础,作用因子组配的生命表及其相应的分析方法为研究手段,对湿地松粉蚧在白云山风景区的发生发展情况进行了研究,组建了越冬代和第1代的连续世代生命表,分析了本地天敌对湿地松粉蚧自然种群数量的影响。第一世代的种群趋势指数为9.398,在白云山,捕食性天敌EIPC值为2.1557,即排除本地天敌对湿地松粉蚧的控制作用后,下代种群数量将为当代的2.1557倍,说明本地天敌对湿地松粉蚧有一定的控制作用;其他类因子是影响该粉蚧种群数量发展趋势的重要因子,其EIPC值为9.0636。更多还原

【Abstract】 By meas the systematic investigation,the life table and its analysis methods of Oracella acuta were studied.Overwintered generation and 1st generation life table were constructed.The natural enemies effecting on Oracella acuta population were analyzed.The trend of 1st population index was 9.398.The suppression effects on the pest of predators were obvious the exclusion index of population control(EIPC) was 2.155 7 to indicated that the next population will increase 2.155 7 times if the natural enemies were excluded.The important factor influencing the natural population of Oracella acuta was"others" which total EIPC was 9.063 6.更多还原