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根据浙江省植物保护总站新近对晚稻中后期病虫发生趋势预测,今年晚稻中后期病虫呈偏重发生态势,其中五(3)代、六(4)代稻纵卷叶螟在杭、嘉、湖、绍稻区大发生,其它地区偏重发生;白背飞虱和纹枯病偏重发生,局部大发生;二化螟在单双季混栽区、稻曲病在粳糯稻种植区偏重发生;细菌性条斑病在温台稻区、穗瘟在山区和半山区的感病品种上偏重发生,潜在威胁较大。针对今年晚稻病虫发生重,近期稻纵卷叶螟蛾峰多、卵量大、来势凶,防治难度大,对晚稻生产构
According to the recent prediction of pest occurrence in the middle and late stages of late rice in Zhejiang Province Plant Protection Station, pests in the middle and late stages of late rice tended to be more serious in this year. Five (3) and 6 (4) generations of Cnaphalocrocis med Lake and Shaodao area occurred in large areas, while other areas were more prevalent. Whitebacked planthopper and sheath blight occurred heavily and local occurrence occurred. In the single and double season mixed planting area, Bacterial leaf streak in the warm rice area, head blast in susceptible varieties in mountainous and semi-mountain prone to occur, the potential threat. In view of this year’s late rice pests and diseases occur heavy, the recent rice curly moth moth peak, the amount of eggs, the potential fierce, prevention is difficult, the late rice production structure