摘要
采用分离培养和生理生化试验等方法,对呼伦贝尔草甸草原优势种群羊草和贝加尔针茅根际土壤微生物多样性及优势菌株进行了研究。结果表明,3类土壤样本微生物总数由高到低依次为:羊草>贝加尔针茅>对照组,但差异不显著(p>0.05);样地中呈现:细菌总数>放线菌总数>真菌总数,细菌与放线菌和真菌均呈显著差异(p<0.01)。在羊草根际土壤中分离到的优势菌株为细菌7个属36株,放线菌4个属21株,真菌3个属17株。
Soil microbes were collected from the root zone of dominant native plants Leymus chinensis and Stipa baicalensis on Hulunber meadow.The diversity and dominant species of microbes were analyzed based on isolation,culture and biochemical analysis.The results demonstrated that the treatments could be ranked according to the gross amount of microbes in a descending order as： Leymus chinensisStipa baicalensisControl.However,no significant difference was found among the treatment（p0.05）.In the samples,bacteria had the highest species numbers,actinomyces had the intermediate,and fungi had the lowest（p0.01）.Specifically,36 colonies of bacteria belonging to 7 genera,21 colonies of actinomyces belonging to 4 genera,and 17 fungi culturists of 3 genera were identified in the root zone soil of Leymus chinensis along.
出处
《水土保持通报》
CSCD
北大核心
2012年第6期250-252,共3页
Bulletin of Soil and Water Conservation
基金
呼伦贝尔学院教学研究项目(YBKT-018)
关键词
微生物数量
种群
多样性
优势菌株
number of microbes
population
diversity
preponderant microbes
