对不同输入条件模型可以得到相应的模拟结果，据此可以研究稻纵卷叶螟的动态经济阈值和确定最优管理措施。

Simulation results can be obtained under different input conditions. Besides, this model can be used to study dynamic economic thresholds and determine the optimal control strategies.

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建立的系统模型能够提供包括农业防治、生物防治和化学防治措施在内的、对三化螟种群实施有效管理的最优决策方案。

The system model can provide on optimal decision strategy to effectively control PSB population, which contains measures of agricultural control, biological control and chemical control.

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因此，本文在研究风险管理与风险评估的基础上，提出了一种基于成本的安全措施选择方法，此方法同时也是一种最优化信息保障的方式。

So based on the research of risk management, this paper give an approach of security measures selection based on costs which also can optimization IA model.

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因此，本文在研究风险管理与风险评估的基础上，提出了一种基于成本的安全措施选择方法，此方法同时也是一种最优化信息保障的方式。

So based on the research of risk management, this paper give an approach of security measures selection based on costs which also can optimization IA model.

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