通过不灭菌砂培，比较了３１ 株荧光色素产生菌和２２ 株耐寒细菌接种处理麦种后对麦苗株高、地上部干重及总干重的影响，获得具有小麦生长刺激作用的荧光色素产生菌和耐寒细菌各３ 株，其中的２ 株耐寒细菌也是荧光色素产生菌。通过离体拮抗试验，得到了７ 株对小麦根腐病原菌及５ 株对小麦全蚀病原菌有抑制作用的根圈细菌。选取分别对小麦土传根腐病原菌和全蚀病原菌具有较强拮抗作用的２ 个菌株Ｘｌ６ 和Ｘｙｇ９（ 该菌株对麦苗生长也有较强刺激作用） 进行了初步鉴定，分别属于Ｐｓｅｕｄｏｍｏｎａｓｆｌｕｏｒｅｓｃｅｎｓｂｉｏｖａｒ Ⅰ和Ⅲ By means of non-sterile sand culture, the effects of 31 fluorescent pigment-producing bacteria and 22 cold-resistant bacteria inoculated on wheat plant height, shoot dry weight and total dry weight were compared to obtain fluorescent pigment with wheat growth stimulating effect Producing bacteria and cold-resistant bacteria each 3 strains, of which 2 cold-resistant bacteria are also fluorescent pigment-producing bacteria. Seven isolates of root rot were obtained from the antagonistic test in vitro and five rhizobacteria were found to inhibit the total pathogen of wheat. Two strains Xl6 and Xyg9 which had strong antagonistic activity against root rot pathogens and total ectomycorrhizal pathogens of wheat were also identified, which are also strongly stimulated to wheat seedling growth. They belong to Pseudomonas fluorescensbiovar Ⅰ And Ⅲ