摘要
2010—2012年对苹果叶枯病发病规律研究的结果表明:该病病原菌Rhizctonia solani Kühn寄主范围广泛,蔷薇科果树都可感染,可通过伤口或直接接触感染;以菌丝和菌核在病枝花芽、叶芽、芽鳞痕和病叶上越冬。病原自6月下旬—9月底均有侵染能力。菌丝在雨季扩展迅速,遇干旱或天气变冷停止扩展形成菌核或菌丝团。在豫北苹果栽培区,7月初开始发病,7月中下旬—9月底为发病盛期,10月初为末期。
The occurrence regularity of leaf blight disease was studied between 2010 and 2012. The re- suits showed that the pathogen Rhizctonia solani Ktihn had a wide host range. It could infect all fruit trees of Rosaceae. Rh. solani overwintered as the mycelia and sclerotia in the flower buds,leaf buds, bud scale traces and leaves in the infected branches. The pathogen could infect the hosts directly or by wound between the last ten days of June and the end of September. The mycelia spread rapidly in rainy season and stopped spread to form sclerotia or hyphal coils in cold or drought season. The early, peak and end stages of the disease usually appeared in early July, last 20 days of July to end of September and early October respectively in North Henan.
出处
《中国森林病虫》
北大核心
2013年第6期9-11,共3页
Forest Pest and Disease
基金
濮阳市杰出人才创新基金项目"苹果叶部病害研究"的部分内容
编号:080302
关键词
苹果
叶枯病
丝核菌
发病规律
apple, leaf blight
Rhizctonia solani Kiihn
occurrence regularity
