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期 刊 ：植物保护学报 1994年

关键词：小麦纹枯病；发病规律；影响因素；

Keywords:wheat sharp eyespot disease occurence and development influencing factors,

摘 要 ：研究结果表明,小麦纹枯病田间发生规律大体有冬前发生期、越冬稳定期、返青上升期、拔节盛发期和抽穗后枯白穗显症期五个阶段。小麦越冬前和早春拔节期有2个发病高峰,小麦根围土中病原菌群体数量消长也出现相应的2个高峰,病菌数量高峰较小麦发病高峰约提前20—25天。秋冬降雨量的多少是影响冬前病害发生的主导因子,影响春季病害发生程度的重要气象因素是温度。相关性测定表明,温度与病害发生程度呈显著正相关。因地制宜适期精量播种、平衡施肥和冬前防除麦田杂草等栽培技术,均能有效地控制和减轻小麦纹枯病的发生与为害。

Abstract:This study indicated that the occurence of wheat sharp eyespot in the field can be divided into five periods,i. e. disease appearing period before winter,stabling period during winter,spreading period at the begining of wheat growth in spring, outbreak pe

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