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文章从嘉湖稻区三化螟为害历史和1987～1989年试验分析认为,引起嘉湖稻区三化螟急剧回升的主要原因是:现行种植制度和混乱的作物布局造成了虫源田、桥梁田比比皆是;农药品种单一,高效对口农药缺乏,有利三化螟的逐年回升;以二化螟为重点的防治策略,使三化螟得以漏网。鉴于短期内生产方式和种植制度不会有较大变化,提出实行“兼治一代,狠治二代,挑治三代”和调整农药品种结构,推广杀虫双颗粒剂治螟的防治策略和措施。
Based on the history of the damage of the rice stem borer in Jiahu district and the experimental analysis from 1987 to 1989, it is concluded that the main reason for the sharp rise of the rice stem borer in the Jiahu rice area is that the current cropping system and chaotic crop layout have caused the insect fields, Abound; single pesticide varieties, efficient counterparts lack of pesticides, the annual improvement of the stem borer; snakebugs as the focus of the prevention and control strategies, so that the stem borer to slenderness. In the light of the fact that there will be no major changes in the mode of production and planting system in the short term, the prevention and cure strategies and measures for the prevention and control of pest-killing double granules for the treatment of stem borer are proposed by implementing the strategy of “treating one generation while ruthlessly cure the second generation and picking the third generation” and adjusting the variety structure of pesticides.