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首页> 外文期刊>Entomologia sinica >SIMULATION AND OPTIMAL MANAGEMENT OF THE PEST-NATURAL ENEMY-INSECTICIDE SYSTEM OF PADDY FIELDS IN MIDDLE SEASON RICE CROPPING REGION
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SIMULATION AND OPTIMAL MANAGEMENT OF THE PEST-NATURAL ENEMY-INSECTICIDE SYSTEM OF PADDY FIELDS IN MIDDLE SEASON RICE CROPPING REGION

机译：季稻区稻田病虫害昆虫共生系统的模拟与优化管理

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摘要

Investigations on the pest-natural enemy-insecticide system, including rice leaf roller -spider-tamaron and planthopper-spider-tamaron system, were carried out in the paddy fields in middle season rice cropping region. The relationship among insect pest, natural enemy and insecticide were studied based on the principle of the pest management system engineering. The optimal management models of the two systems were developed. Their diagrams of optimal feedback control strategy were contoured for computer monitoring of the pest-natural enemy-insecticide system. The population densities of pest and natural enemy in the future could be forecasted and the optimal strategy could be made when the current field densities of pest and natural enemy were input into the computer. The optimal performance index, which is a combination of the total cost of using the chemical and the total cost of pest damage to crops, for pest control is minimized. The objective of the system management is to drive the state of the system towards a beneficial equilibrium of the system generally. A comparison of the new IPM strategy with the ordinary strategy based on a single economic threshold is conducted in this paper. The optimal control strategies suggest that both pest and natural enemy populations should be controlled in the integrated pest management.
机译：在中稻种植区的稻田中进行了害虫-天敌-杀虫剂系统的研究，包括水稻卷叶-蜘蛛-番茄和飞虱-蜘蛛-番茄。基于害虫管理系统工程原理，研究了害虫，天敌和杀虫剂之间的关系。开发了两种系统的最优管理模型。概述了他们的最佳反馈控制策略图，用于计算机监控害虫-天敌-杀虫剂系统。当将当前的有害生物和天敌的田间密度输入计算机时，可以预测未来的有害生物和天敌的种群密度并制定最佳策略。最佳性能指标是使用该化学品的总成本和害虫对农作物造成伤害的总成本的总和，可将害虫控制最小化。系统管理的目标是驱动系统的状态总体上朝着系统的有益平衡发展。本文对基于单一经济门槛的新IPM策略与普通策略进行了比较。最佳控制策略表明，在虫害综合治理中应同时控制害虫和天敌种群。

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