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湖南水稻3大害虫(稻螟虫、稻飞虱、稻纵卷叶螟),发生面积大,危害重。根据近年这3大害虫的发生危害情况,从食料条件、气候条件、天敌因子及农药使用中存在的问题等方面分析了导致3大害虫致灾的主要原因。为了农业的可持续发展和有害生物的可持续治理,提出了以“生态调控为主,化学防治为辅”的防治策略,采用“改变种植结构,优化稻田景观;选用抗性品种,实行健身栽培;保护利用天敌,拓展生物防治;辅以化学防治,合理使用农药”的防治措施。
Hunan rice three pests (rice stem borer, planthopper, rice leaf roller), the occurrence of large area, endangering heavy. According to the occurrence of the three major pests in recent years, the main causes of the three pests were analyzed from the aspects of foodstuffs, climatic conditions, natural enemies and problems in the use of pesticides. In order to promote the sustainable development of agriculture and the sustainable management of pests, we put forward the strategy of prevention and control with “ecological regulation as the main and chemical prevention and treatment as the second supplement”, adopting the strategy of “changing planting structure, optimizing the landscape of paddy field, selecting resistant varieties and practicing fitness cultivation ; Protection and use of natural enemies, to expand biological control; supplemented by chemical control, rational use of pesticides ”prevention and control measures.