摘要
报道了山东省近年来发生的一种新病害—冬枣黑斑病。该病在山东境内冬枣栽培区均有分布 ,主要危害叶片和果实 ,一般病果率在 3 0 %左右 ,感病重的枣园达 80 %以上 ;病原菌以菌丝在枣树牙鳞和皮痕内越冬 ,可通过伤口和自然孔口侵入 ,2 5℃下潜育期 7天左右 ;7月下旬、8月上旬为发病盛期 ;病害的发生与气候、树龄、枣园种植结构、昆虫危害等因子密切相关。
A new disease -'Dongzao' jujuba black patch found in shandong province was reported. The disease existed where 'Dongzao' jujuba was planted , which mainly harmed leaves and fruits. Average infected fruit rate was about 30% . more than 80% of Jujuba garden were diseased. The perula and bark scar were main hibernacles of Pathogenic fungi; Pathogenic fungi infected into by wounds and natural holes. The latent period was about 7 days in 25℃ . The disease was prevalent from last ten days of July to first ten days of August, which had more relevant to climate, tree ages, garden planting structure, and insect injuries.
出处
《山东林业科技》
2004年第3期1-3,共3页
Journal of Shandong Forestry Science and Technology
关键词
冬枣
黑斑病
发生规律
Dongzao' jujuba
Black patch disease
Outbreak regularity
