湖北省水稻三化螟的发生、消长、防治及其演变

THE INCIDENCE, CONTROL STRATEGY AND ITS DEVELOPMENT OF PADDY BORERS IN HUBEI PROVINCE

通过分析总结湖北省水稻三化螟４８ａ中发生为害的消长演变和防治措施的发展变化，进一步认识了三化螟发生为害的年度间演变规律和周年发生规律。认为冬春气候（气温、雨量）、水稻栽培制度和中稻生育期等因素与三化螟为害密切相关。并从治螟技术的发展历程提出了合理选择药剂、改善施药方式、发挥天敌自然控制作用的治螟策略。

The incidence regularity and control strategy of paddy borers has been worked out by analyzing its 48 years' historical data in Hubei province, which showed that winter-spring climate(tempreture and rainfall), cultural system of rice and growing period of middle-season rice were closely related to the incidence of paddy borers. A series of control strategy have been suggested such as selecting pesticide reasonably, improving pesticide application methods and taking advantage of natual enemies.