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通过调查研究 ,组建了以作用因子为组分的春季香蕉假茎象甲 (OdoiporuslongicollisOliver)自然种群生命表 ,在此基础上运用排除作用控制指数法分析了各种因子对假茎象甲自然种群的作用 .结果表明 ,春季假茎象甲自然种群趋势指数成长蕉株上平均为 4 .3481,留头蕉茎上平均为 3.6 6 2 8.捕食及其它因子对该虫种群控制作用最大 ,排除作用控制指数成长蕉株为 1.92 5 6 ,留头蕉茎上为 2 .35 77;自然死亡作用次之 ,成长蕉株为 1.36 0 7,留头蕉茎上为 1.35 5 4 ;寄生或疾病因子作用最小 ,成长蕉株为 1.1988,留头蕉茎上为 1.16 6 8.捕食及其他是该虫种群增长的重要控制因子 .
Through the investigation and research, the natural population life table of spring banana pseudostemonellae (Odoiporus longicollis Oliver) was established with the action factor as the component. Based on the results, the exclusion control index was used to analyze the effect of various factors on the natural population The results showed that the trend index of natural population growth of P. pseudocerasus in spring was 4.3481 on average, and 3.6 6 2 on the stems of the left head banana plantation. The predation and other factors had the greatest control effect on the insect population, The index of control growth was 1.92 5 6 for banana plantations and 2.35 77 for stem plantains, followed by natural death, with 1.36 0 7 for plant growth, 1.35 5 4 for stem plantain, and parasitic or disease-inducing effects The minimum was 1.1988 for plant growth and 1.16 6 for stem plantain. Predation and others were important control factors for the population growth.