拮抗放线菌G19对模拟再植毛桃根际微生物多样性的影响  

The Effects of Antagonistic Actinomycetes G19 on Microbial Diversity in Replanted Peach Rhizosphere

作　　者：邸宁[1] 刘志民[1] 马焕普[1] 

机构地区：[1]北京农学院植物科学技术学院,北京102206

出　　处：《中国农学通报》2011年第28期225-230,共6页Chinese Agricultural Science Bulletin

基　　金：北京市教委资助项目"Ct-放线菌对核果类根癌病的抑菌效果及工艺研究"(KM200910020001);北京市自然科学基金资助项目"耐氰放线菌G-19产生的桃根癌菌抑制物的纯化与功能分析"(5112010)

摘　　要：为了了解不同处理对微生物多样性变化的影响,试验采用Biolog技术对施用拮抗放线菌发酵液后的毛桃根际微生物的多样性进行了分析,结果表明:施放线菌G-19后,其根际细菌和放线菌数量增加,真菌数量明显减少,与正常土的变化趋势相似;再植土则相反,真菌数量大幅上升,细菌数量下降。微生物代谢活性及微生物群落多样性指数显示施用了放线菌G-19的根际微生物也是最丰富和稳定的,毛桃幼苗的生长也以施放线菌G-19发酵液的效果最好,这说明拮抗放线菌G-19有改善桃再植土壤微生态的作用。The aim was to compare the difference in microbial diversity of different treatments.In this study,microbial diversity of peach rhizosphere which fermented antagonistic actinomycetes was measured by Biolog Eco plate facilities.The results showed that the number of bacteria and actinomycetes in peach rhizosphere increased significantly and the number of fungi decreased.That was similar to the normal soil.By contrast,the number of fungi increased significantly and the number of bacteria and actinomycetes decreased in replant soil.Microbial metabolic activity and microbial community diversity index application of actinomycetes G19 in rhizosphere microorganisms was the most abundant and stable.Seedling growth of peach was the best after strains G19 fermentation broth treatment.It indicated that antagonistic actinomycetes G19 could improve the ecological environment of the soil in replant peach rhizosphere.

关 键 词：BiologEco PLATE AWCD 根际微生物 

分 类 号：S154.3[农业科学—土壤学]