野生麻黄根际有益微生物的研究

Studies on useful microorganism of rhizosphere of wild Herba Ephedra

目的 研究野生麻黄根际的有益微生物。方法 利用土壤微生物研究法分离纯化微生物菌种 ,观察其个体形态和培养特征及主要生理特性。用菌液浸泡处理麻黄种子 ,进行室内发芽试验及田间育苗。结果 野生麻黄根际土壤微生物以细菌为主 ,其次是放线菌 ,真菌最少。从新疆野生中麻黄和膜果麻黄根际土壤中分离纯化出 17株细菌 ,发芽试验及田间育苗结果表明 ,其中 6株可以提高麻黄种子的发芽率并能在高盐碱的条件下生长。结论 麻黄根际微生物可提高麻黄种子的发芽率。该类微生物具有很强的耐盐碱能力。

Object To study the useful microorganism of rhizosphere of wild Herba Ephedra (HE) Methods Strains were isolated, purified and studied by the soil microbiological method After the seeds of E intermedia Schrenk ex Mey. were soaked, the germination test was carried out Results Number of microorganism of rhizosphere of wild HE are: bacteria>actinomycetes>fungi There are 17 strains which were isolated from E intermedia Schrenk ex Mey. and E przewalskii Stapf in Xinjiang Results of the germination test indicate that six strains can make germination rate of E intermedia seed increase and can make it grow under the high concentration of NaCl and NaCO 3 Conclusion The microorganism of rhizosphere of wild HE can make the germination rate of E intermedia seed inerease They are all salt tolerant and alkali tolerant microorganism