The stimulating effects of isolates on soil aggregates changed with supplying different organic materials. The effect was the best when supplying with sucrose. And the content of >0.25mm soil WSA was more than 80%.

• 筛选到的菌株在灭菌土壤中均能生长和繁殖，其团聚土壤颗粒的效果与所供给的碳源物质密切相关：供给易利用的碳源如蔗糖效果最好，土壤中大于0.；25mm水稳性团聚体含量达80%25以上；