荔枝上垫囊绿绵蜡蚧自然种群动态的研究

Study on the Natural Population Dynamic of Chloropuicinaria psidii Mask in Litchi

摘要: 通过室内饲养观察和田间系统调查的方法，组建了垫囊绿绵蜡蚧Chloropuicinaria psidii Mask．自然种群生命表，研究了其在荔枝上自然种群动态发生趋势，结果表明，在自然条件下，垫囊绿绵蜡蚧的种群趋势指数为3．40；捕食性天敌对该蚧壳虫的种群具有一定的控制作用，其排除作用控制指数（EIPC）为2．414，“其他”类因子的EIPC为7.668，说明“其他”类因子是影响种群数量发展趋势的重要因子．

Abstract: The life table for natural population of Chloropuicinaria psidii Mask was constructed and the natural population development C. psidii in litchi were studied by means of observation in the laboratory and the systematic investigation in the field.The results showed that the index of population development trend of C.psidii was 3.40;The exclusion index of population control(EIPC) of the suppression effect of predators on the pest was 2.414,which meant the predators would effect on the population of C.psidii.The important factor suppressing the natural population of C.psidii was "others" which total EIPC was 7.668.