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根据2004年浙江省粮油作物主要病虫发生情况、冬前病虫残留基数及省气象台2005年1至9月份天气预报,并结合今年粮油作物种植结构变化及病虫历史演变规律,经综合分析:2005年粮油作物病虫仍呈中偏重发生态势。其中稻纵卷叶螟为大发生;小麦赤霉病、麦蚜、油菜菌核病、水稻螟虫、纹枯病、稻飞虱为中偏重发生;黑条矮缩病、条纹叶枯病发生范围逐渐扩大,黑条矮缩病在温台局部稻区有重发的可能。
According to the occurrence of main pests and diseases of cereals and oil crops in Zhejiang Province in 2004, the base number of pests and diseases before winter and the weather forecast from January to September in 2005 of the Provincial Meteorological Observatory, and combining with the changes of planting structure of grain and oil crops and the historical evolution of pests and diseases in this year, In 2005, pests and diseases of grain and oil crops still showed a tendency to be more prevalent. Among them, the rice leafroller was the largest occurrence; the wheat scab, the wheat aphid, the rape sclerotinia, the rice stem borer, the sheath blight and the rice planthopper were moderately weighted; the incidence of black-streaked dwarf and stripe leaf blight Gradually expanded, black-streaked dwarf disease in the local rice area has the possibility of re-transmission.