石刁柏斑点病的病原菌发生规律及防治  

STUDIES ON ASPARAGUS SPOT DISEASE CAUSED BY Stemphylium botryosum WALLR

作　　者：史士英[1] 匡开源[1] 

机构地区：[1]上海市农业科学院植物保护研究所

出　　处：《上海农业学报》1995年第1期59-63,共5页Acta Agriculturae Shanghai

摘　　要：石刁柏斑点病是国内石刁柏的一种新病害。主要侵害茎、枝和拟叶，形成斑点症状，引起石刁柏落叶枯枝和早衰。病原菌分生孢子梗单生或丛生，圆筒状；分生孢子单生，卵形至长方圆形，呈砖隔状。经鉴定，该病原菌为匍柄孢霉（ＳｔｅｍｐｈｙｌｉｕｍｂｏｔｒｙｏｓｕｍＷａｌｌｒ．）。研究结果表明，８月下旬至１０月是石刁柏斑点病的盛发期，秋季温暖多雨会加速病害扩展。化学防治，以８０％大富丹可湿性粉剂效果最好。The asparagus spot disease caused by Stemphylium botryosum Wallr is a new disease in China. The characteristic symptom of the disease is the presence of spotted lesions mainly on stems and branches, which may also occur on leaflet. Coalescing spots might cause drop of leaf and kill whole stem or branches. The causal fungus was identified as Stem phylium botryosum Wallr. Its conidiophores were cylindrical, emerged from stomata, solitary or clustered. Conidia were ovoid to oblong and septate. This study showed that the disease occurred seriously in asparagus fields from the last ten days of August to October. The result of chemical control experiment showed that Dafolaten(80%WP) was most effective.

关 键 词：石刁柏 斑点病 病原菌 防治 发生规律 

分 类 号：S436.44[农业科学—农业昆虫与害虫防治]