建立了病毒与害虫相互作用的害虫管理模型,利用脉冲泛函微分方程的比较原理得到了害虫灭绝周期解的全局吸引性和系统.%In this paper, we consider a viral infection and stage-structured mode. We have shown that there exists a pest-free periodic solution, which is globally attractive. Sufficient condition for the permanence of the model is also given.
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