云南省宣威市马铃薯晚疫病发病规律研究  

Occurrence and Epidemic Conditions for Potato Late Blight

作　　者：唐旭兵[1] 杨艳丽[1] 展康[2] 钱彩霞[2] 杨艳芬[2] 罗文富[1] 

机构地区：[1]云南农业大学云南省植物病理重点实验室云南,昆明650201 [2]宣威市农业技术推广中心云南,宣威655400

出　　处：《中国马铃薯》2007年第3期134-138,共5页Chinese Potato Journal

基　　金：云南省科技攻关项目(2002NG09)

摘　　要：本研究用定点观察的方法,连续3年对云南省宣威市马铃薯种植田块中田间气候、种植习惯、品种等因素进行调查记录,同时观察记录该区域马铃薯晚疫病田间发生、发展情况。结果表明:马铃薯疫病在云南宣威市的发生与流行受主栽品种的抗性、种薯带菌率以及田间气候条件等多因素综合影响。新品种滇薯6号在当地表现出较好的抗性;种薯带菌率越高,田间晚疫病发生越重,流行越快;田间相对湿度高,对晚疫病发生与流行十分有利。In the period of 2003 to 2005, climate data in field, cropping pattern, and potato cuhivars used in Xuanwei, Yunna were recorded, and at the same time occurrence and development of potato late blight were observed. The occurrence and epidemic of potato late blight in Xuanwei, Yunna were determined by resistance level of extensively cultivated cultivars, percentage of infected seed tubers, and climate conditions in field. The new cuhivar Dianshu 6 had good resistance to late blight. The more the percentage of infected seed tubers was, the more the severity Of late blight. High relative humidity in field was favorable for occurrence and epidemic of late blight.

关 键 词：马铃薯 晚疫病 发病规律 

分 类 号：S435.32[农业科学—农业昆虫与害虫防治]