【摘要】 使用微分方程理论研究了有投放率时一类云杉蚜虫与其天敌模型在相互作用过程中所呈现的动态性质,通过对反馈增益值的选取,得到了系统达到稳定平衡状态的条件,同时保证了实际中蚜虫的密度相对小．更多还原

【Abstract】 In this paper,the characteristics of some spruce aphides and its predator interac- tional model with constant stocking rate of predator is discussed by using the differential equation theory.The condition to stable state is obtained with calculating the feedback plus value.In the meantime it satisfies that the density of the prey is considerable small.更多还原