【摘要】 试验表明，大豆根瘤菌、园褐固氮菌、胶质芽孢杆菌、根霉和５４０６放线菌等均有助于土壤团聚体的形成，使粒径＞５ｍｍ，２～５ｍｍ的粒级量明显增多；供试菌株也表现有腐殖质化的作用和产生多糖的能力，使土壤水稳性团聚体含量相应提高。更多还原

【Abstract】 The experimental results showed that Rh. japanicum, Az. chroowccum,Bac. mucilaginosus, Rhizopus sp, and Str. microflavus etc. had the abilities helpful toform soil aggregates thereby to make soil aggregates with particle sizes over 5mm and 2-5mm increase greatly. The tested strains also indicated that they had the roles in hu-munification and the abilities to produce polysaccharides, thus, rendering the contents ofsoil waterstable aggregates increase correspondingly.更多还原