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Author:
Journal / Book Title:
Year:
Volume:
Issue:
ma ling shu zao yi bing zha fang zhi
Author(s):
YANG Guang
Pages:
39
Year:
2011
Issue:
21
Journal:
Pesticide Market News
Keyword:
马铃薯早疫病
;
叶片
;
分生孢子梗
;
防治方法
;
病原菌
;
病斑
;
块茎
;
圆形
;
染病
;
侵染
;
Abstract:
<正>马铃薯早疫病主要发生在马铃薯叶片上,也可侵染块茎。叶片染病病斑黑褐色,圆形或近圆形,具同心轮纹,大小3~4毫米。湿度大时,病斑上生出黑色霉层,即病原菌分生孢子梗和分生孢子。发病严重的叶片干枯脱落,田间一片枯黄
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