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对我国盐碱土壤中丛枝菌根（Ａｒｂｕｓｃｕｌａｒ Ｍｙｃｏｒｒｈｉｚａ，ＡＭ） 菌的种属构成、生态分布状况进行了研究．结果表明，不同地区ＡＭ 菌种属构成不同，其种属组成、分布与土壤类型、碱化度和土壤有机质含量有关．盐渍化砂土、壤土和粘土中，Ｇｌｏｍｕｓ 属的真菌数量最多，Ａｃａｕｌｏｓｐｏｒａ 属次之，而Ｇｌｏｍｕｓ 属中的Ｇ．ｍｏｓｓｅａｅ 则是分布最为广泛的菌种．随土壤碱化度的增加，Ｇｌｏｍｕｓ ｍｏｓｓｅａｅ 出现频率随之相对增加．在一定范围内有机质含量越高，土壤中ＡＭ 菌种和属的种类就越多．ＡＭ 菌的种属组成因不同寄主植物而异，其中豆科植物根围中ＡＭ 菌分布的种属数量最多．
The species composition and ecological distribution of arbuscular mycorrhizal (AM) bacteria in saline-alkali soil of China were studied. The results showed that the composition of arbuscular mycorrhizae in different regions was different, and their species composition and distribution were related to soil type, degree of alkalinity and soil organic matter content. Salinized sandy loam, loamy soil and clay, Glomus genus had the most fungi, Acaulospora genus and Glomus genus G. Mosseae is the most widely distributed species. With the increase of soil alkalinity, the frequency of Glomus mosseae increased accordingly. In a certain range of organic matter content is higher, the soil AM species and genus more. The species composition of AM fungi varies from host plant to host, with the largest number of arbuscular mycorrhizal fungi distributed in the rhizosphere of legumes.