捕食者具脉冲扰动与食饵具有化学控制的阶段结构时滞捕食-食饵模型,利用脉冲微分方程的比较定理及周期解存在定理,得到了食饵灭绝周期解的全局吸引和系统持久的充分条件,证明了系统的所有解的一致完全有界,所得的结论为现实的害虫管理提供了可靠的策略依据,也丰富了脉冲时滞微分方程的理论。
A stage-structured delayed predator-prey system with impulsive perturbations on predator and chemical control on prey is investigated.Based on the comparison theorem and periodic solution existing theorem of impulsive differential equations,sufficient conditions of the global attractivity of pest-extinction periodic solution and permanence of the system are obtained.It is shown that all the solutions of the system are uniformly ultimately bounded.The obtained results provide reliable tactical basis for the practical pest management and enrich the theory of impulsive differential equations.