小麦雪霉叶枯病发病的生态条件研究  

Studies on the Ecological Infection Conditions of Gerlachia Leaf blight in Wheat

作　　者：康业斌[1] 商鸿生[1] 王树权[1] 

机构地区：[1]洛阳农业高等专科学校,西北农业大学

出　　处：《河南农业大学学报》1996年第3期293-296,共4页Journal of Henan Agricultural University

摘　　要：室内模拟研究结果表明，霉腐格氏霉（Ｃｅｒｉａｃｈｉａｎｉｖａｌｉｓ）侵染小麦的适宜温度为１７℃，２０℃以上有利于病菌在寄生组织中扩展。在相对温度９３％以上的条件下，２～３ｄ病害就会普遍发生，持续时间越长，发病越严重。光强８０００～１００００１ｘ每天光照６ｈ最适于病菌侵入和扩展，长时间光照不利于病害发生。The indoor simulated tests results showed that the optimum temperature was17℃ for Gerlachia niualis penetration and above 20℃C for disease development in its hosttissuse.When infection occured above RH 93%the disease would be widespread within 2or 3 days,the longer the time of RH 93%～100%lasted,the severer the disease would be.The best lightcycle for penetration and development of the pathogen in wheat plant was6h.light and l8h.darkness per day with 8 000～10 000lx,long time of lasting light was notsuitabe for disease occurrence.

关 键 词：雪霉叶枯病 发病条件 小麦 

分 类 号：S435.121.4[农业科学—农业昆虫与害虫防治]