烟草气候斑病病原物的探讨  

AN EXPLORATION ON THE AETIOLOGICAL AGENT OF TOBACCO WEATHER FLECK

作　　者：孙恢鸿[1] 李清标[1] 朱桂宁[1] 周兴华 

机构地区：[1]广西农业科学院植物保护研究所,南宁530007 [2]广西烟草公司

出　　处：《植物保护学报》1998年第4期305-310,共6页Journal of Plant Protection

摘　　要：在我国对烟草气候斑病的主要病原物尚存在两种不同的见解。1993～1996年多次采用人工模拟的研究结果表明,SO_2和O_3对烟株叶片伤害症状存在较大的差异,O_3伤害形成的白斑型症状又与气候斑病田间一般症状相同,故烟草气候斑病确系O_3为主的大气污染所致。O_3引起烟草气候斑病的临界剂量为0.321～0.358μl/L·0.25h。The aetiological agent of tobacco weather fleck was studied by simulative stress exposure methods in 1993 to 1996. The results indicated that the symptom of tobacco leaves induced by O3 was different distinctly from those caused by SO2 but it was similar to those observed in the fields. This disease was therefore caused mainly by O3 injury. The threshold dose tested for O3 injury to tobacco leaves was 0. 321 - 0. 358μl/L ·0. 25h.

关 键 词：烟草气候斑病 病原物 大气污染 

分 类 号：S435.72[农业科学—农业昆虫与害虫防治]