期刊论文

中文

热带作物学报

1000-2561

2016

37

5

964-970

10.3969/j.issn.1000-2561.2016.05.018

国家林业公益性行业科研专项

本校为第一机构

为提高降香黄檀-檀香人工林的土壤肥力,从不同林龄的降香黄檀、檀香根际土壤中分离筛选高效解钾菌。从钾细菌富集培养基上初筛和解钾菌筛选培养基复筛得到可培养物89个。采用原子吸收分光光度法测定菌株解钾能力。结果表明, 可溶性钾含量在70 μg/mL以上的菌株有6株, 其中菌株JT-K21、JT-K11和JT-K18的解钾率为80%以上。JT-K21培养液的可溶性钾含量高达132.68 μg/mL, 解钾率达到221.18%。基于形态学、生理生化特性及16S rDNA序列比较分析,初步鉴定JT-K21为恶臭假单胞菌Pseudomonas putida。不同碳氮源试验表明: JT-K21对蔗糖和硫酸铵的吸收效果最好。通过单因素试验及正交试验结果表明: 菌株JT...

To improve the soil fertility of the mixed forests Dalbergia Odorifera and Santalum album L., the high efficiency potassium utilization bacteria were isolated and screened from the rhizosphere soil of different ages of D. Odorifera and S. album L.. By potassium bacteria culture medium and potassium -releasing bacteria culture medium, 89 bacteria strains were obtained and cultivated. The ability of dissolving potassium of the 89 isolates were determined with the atomic absorption spectrophotometer method. As the results showed that six bacteria ...