文献类型： 中文期刊
作者：
作者机构：
期刊名称：昆虫学报
ISSN： 0454-6296
年卷期： 1984 年 04 期
页码： 468-471
收录情况： 北大核心
摘要： 玉米螟微孢子虫病很早就被认为是玉米螟自然平衡的重要因素(Paillot,1928)。它对玉米螟的生存、繁殖和越冬都造成严重影响(zimmack等,1957;Kramer,1959;Frye等,1974;问锦曾,1975;Windels等,1976)。在室内饲养的玉米螟群体,常会因微孢子虫病的污染而毁灭。但在田间,玉米螟自然发病率一般仅0—40％(Weiser,1956;问锦曾.1975)。近年Lewis(1978)在田间小区玉米上人工接种螟虫的试验中发现,螟虫群体初始仅有25％染病,通过粪便传染,后期染病率可高达90％以上。显
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