枣黑腐病发病规律研究  

Study on the Regularity of the Outbreak of Black-rotted Disease of Jujube

作　　者：李志清 常聚普 乔趁峰 郭利民 程国华 邓桂芬 

机构地区：[1]河南省濮阳林业科学研究所,濮阳457000

出　　处：《果树科学》1997年第4期252-256,共5页Journal of Fruit Science

基　　金：河南省科委"八五"攻关课题"枣黑腐病研究"部分内容

摘　　要：1990～1994年对枣黑腐病(Dothiorella gregaria Sacc.)进行研究,结果表明:该病原菌主要以分生孢子器及分生孢子在落地病果和干枯枝上越冬。病菌可以通过伤口或直接侵入,人工接种潜育期2～7d。从6月底至9月中旬病菌均可侵染果实,有潜伏侵染和再侵染。田间8月上旬为发病初期,8月下旬至9月上旬为发病盛期。侵染率与7～8月降雨量和阴雨天数呈正相关;发病程度与果实成熟度、树势、间作物种类及虫害防治等有密切关系。The results of the study in the North of Henan in 1990～1994 showed that the Dothiorella gregaria Sacc.passes the winter in rotted fruit and dry branch by conidium.The pathogen infects directly or through the wound and the latent development of the desease by inoculation lasts 2～7 days.The pathogen can infect or reinfect fruit from July 1st to the end of September.The disease is most serious from the end of August to the first decade of September.The rate of infected fruits is closely correlated with the precipitation and the number of overcast raining days from July to August.The damage level of the fruit is affected by mature de- gree of the fruit,the tree condition,the variety of intercropping crop and the damage of Carposina niponensis Walsingham.

关 键 词：枣 黑腐病 发病规律 防治 

分 类 号：S436.65[农业科学—农业昆虫与害虫防治]