中文摘要：

作者于2011年10月对山东潍坊、青岛和烟台等地果树种植园土壤中丛枝菌根（AM）真菌物种多样性进行了调查。共分离到AM真菌4属：无梗囊霉属（Acaulospora）、球囊霉属（Glomus）、巨孢囊霉属（Gigaspora）和盾巨孢囊霉属（Scutellospora）共29种。其中，无梗囊霉属和球囊霉属是山东东部地区果园的优势属，双网无梗囊霉（Acaulosporabireticulata）和网状球囊霉（Glomusreticulatum）则是优势种。梨（Pyrus bretschneideri）、葡萄（Vitis vinifera）、樱桃（Cerasus pseudocerasus）、苹果（Malus pumila）和枣（Zizyphus jujuba）根围AM真菌孢子密度分别为137个／50g、109个／50g、268个／50g、216个／50g和188个／50g；种丰度分别为12、14、12、12和11。该区果园中AM真菌Shannon指数大小依次为梨园〉樱桃园〉葡萄园〉苹果园〉枣园。本调查土壤理化特性范围内，土壤速效P含量与AM真菌孢子密度呈正相关，pH值与Shannon指数则呈负相关。

英文摘要：

In order to investigate the species diversity of arbuscular mycorrhizal （ AM } fungi in fruit tree plantations, root zone soil samples of pear （ Pyrus bretschneideri ） , grape （ Vitis vinifera ） , cherry { Cerasus pseudocerasus }, apple { Malus pumila } and Chinese date （ Zizyphus jujuba ） grown in orchards in Weifang, Qingdao, and Yantai of Eastern Shandong were collected in October 2011 to isolate and iden A total of 29 species belonging to Acaulospora, Glomus, Gigaspora and Scutellospora were tify AM fungal species. identified. Acaulospora and Glomus were the dominant genera, and Acaulospra bireticulata and Glomus reticulatum were the dominant species in all of the orchard investigated. The spore density of AM fungi in the root zone soil of pear, grape, cherry, apple and jujube trees was 137/50g, 109/50g, 268/50g, 216/50g and188/50g soil respectively, while the species richness was 12, 14, 12,12 and 11 respectively. Shannon indexes AM fungal species in various orchards showed pear orchard 〉 grape orchard 〉 Cherry orchard 〉 apple orchard 〉 Chinese date orchard. There were signifi cant positive correlation between available P contents and spore density, and a negative correlation between soil pH and Shannon indices of AM fungi under the conditions of within the range of chemical and physical property of the present investigation regions.