胶质芽孢杆菌对黑麦草根际微生物数量的影响  

Effects of Bacillus mucilaginosus agents on the quantity of microorganism in ryegrass rhizosphere

作　　者：张晓波[1,2] 赵艳[1] 

机构地区：[1]海南大学农学院,海南海口570228 [2]热带作物种质资源保护与开发利用教育部重点实验室海南大学,海南海口570228

出　　处：《草业科学》2012年第6期889-893,共5页Pratacultural Science

基　　金：海南省教育厅高等学校科学研究项目(Hjkj2010-16)

摘　　要：本试验采用稀释涂布平板法研究了从玉米(Zea mays)、草地早熟禾(Poa pratensis)、披碱草(Elymus dahu-ricus)、多年生黑麦草、匍匐剪股颖(Agrostis palustris)根际土壤中分离到的5株胶质芽孢杆菌(Bacillus mucilag-inosus)菌株对多年生黑麦(Lolium perenne)草根际微生物数量的影响。结果表明,分离筛选到的5株胶质芽孢杆菌菌剂施入土壤后,黑麦草根际3个采样时期的细菌、放线菌数量都分别高于无施胶质芽孢杆菌菌剂的对照;但3个采样时期的根际真菌数量与对照相比均呈降低趋势,说明5株胶质芽孢杆菌菌剂施入土壤后对真菌的生长具有抑制作用,但对多年生黑麦草根际细菌、放线菌数量的提高具有促进作用。This experiment was aimed to investigate the effect of 5 strains of Bacillus mucilaginosus, isola-ted from rhizospheres of Zea mays （K02）, Poa pratensis （K05）, Elyrnus dahuricus （K09）, Lolium perenne （K11） and Agrostis palustris （K12） resipectively, on the quantity of microorganism in ryegrass （L. perenne） rhizosphere by using a dilution coating flat method. The result showed that after fertilizing with the agents, the quantities of bacteria and actinomycetes of three different sampling periods in ryegrass rhizosphere were significantly higher than those in control. The fungi quantity of three different sampling periods in ryegrass rhizosphere tended to decrease compared with control. It indicated that the effect of B. rnucilaginosus agents on fungus quantity was negative, but they were beneficial to increase the quanti- ties of bacteria and actinomycetes in ryegrass rhizosphere.

关 键 词：胶质芽孢杆菌 土壤微生物 多年生黑麦草 根际 

分 类 号：S543.6[农业科学—作物学]