环境因子和AM真菌分布的关系THE RELATIONSHIP BETWEEN THE DISTRIBUTION OF AM FUNGI AND ENVIRONMENTAL FACTORS
张美庆,王幼珊,邢礼军
摘要(Abstract)：
由我国东、南沿海七省278个土样中的908个AM真菌种次分析了AM真菌属和种的分布和7种环境因子的关系。球囊霉属在各种环境下均占绝对多数，巨囊霉属＋盾巨囊霉属则为最少。球囊霉属在各pH水平土壤中分布较均匀。而其它四属主要出现在pH低于7的土壤中。摩西球囊霉C.mosseae（Nocol．＆Gerd．）Gerdemann＆Trappe在pH低于5的土壤中仍能发现。所有五属AM真菌的出现率都随土壤有机质含量增高而减少，但在有机质含量小于1．5％时出现率均稍低于1．5-3．0％；地球囊霉G．geosporum（Nicolsom＆Gerdemann）Walker的孢子数与属的规律相同，而台湾球囊霉G．formosanumWu＆Chen和弯丝硬囊霉SclerocystissinuosaGerdemann＆Bakshi则在有机质含量小于15％时数量最少。五属在不同速效磷含量土壤中的出现没有明显规律；而不同菌种对土壤含磷量有不同反应。无梗囊霉属随土壤中铁含量增加而减少其出现率;而硬囊霉属在铁含量大于15mg／kg时出现率均较多，摩西球囊霉在高于25mg／kg的土壤中明显减少而台湾球囊霉则多见于25～40mg／kg的土壤中。在15个土类中，无梗囊霉属和硬囊霉属主要分布在赤红壤和砖红壤中，前者在水稻土中也较多;台湾球囊霉主要在红壤和赤红壤中，而细四无梗囊霉A．scrobiculataTrappe则在潮土和棕壤中
关键词(KeyWords)： AM真菌;土壤pH;有机质;速效磷;有效铁;土壤类型和质地;宿主植物
基金项目(Foundation): 国家自然科学基金!39170015;;重大基金!39790100
作者(Author): 张美庆,王幼珊,邢礼军
DOI: 10.13346/j.mycosystema.1999.01.005
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