LI Xueping,REN Jiayun,ZOU Meiling,et al.Phosphate-Solubilizing Ability of a Saline-Alkali Fungus Strain and Effects on the Growth of Corn in Sensitive Period[J].Research of Soil and Water Conservation,2015,22(05):276-278.
一株耐盐解磷菌的解磷能力及对玉米敏感期生长的影响
- Title:
- Phosphate-Solubilizing Ability of a Saline-Alkali Fungus Strain and Effects on the Growth of Corn in Sensitive Period
- Keywords:
- saline-alkali fungus strain; corn; inorganic phosphorus
- 分类号:
- S144;S513
- 摘要:
- 从黄河三角洲盐碱化土壤中筛选了一株高效解磷真菌QL1501，经鉴定为草酸青霉菌，菌株QL1501对无机磷的解磷能力远大于对有机磷的解磷，解无机磷最大浓度达85.21 mg/L。菌株QL1501的最适生长pH值为8时菌体生长极好。当NaCl浓度为1%～5%时，菌株解磷能力变化不大，溶液中有效磷浓度为76.08～65.37 mg/L。当溶液中NaCl浓度高于7%时，菌体生长受到较大影响。接种解磷真菌QL1501处理的玉米株高、根干重和植株干重均显著高于未接种的对照处理，说明该解磷菌作为解磷生物肥料具有良好的效果。
- Abstract:
- Fungi strain QL1501 was screened from the Yellow River Delta in the saline-alkali soil and was identified as penicillium oxalate. The strain QL1501 solubilized more inorganic phosphorus than organophosphorus. The maximum concentration of inorganic phosphorus was up to 85.21 mg/L. The optimum pH which was 8 was the best condition for strain QL1501. Phosphate-solubilizing ability of the strain changed little when NaCl concentration was between 1% and 5%, and the available phosphorus concentration ranged from 76.08 mg/L to 65.37 mg/L. The bacteria growth was affected when the concentration of NaCl was higher than 7%. Height, root dry weight and plant dry weight of the corn were significantly higher in inoculation of phosphate-solubilizing fungi QL1501 treatment than that of unvaccinated fungi treatment. The results suggested that as phosphate-solubilizing biological fertilizer, the phosphate-solubilizing bacterium was effective.
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备注/Memo
收稿日期:2015-01-31;改回日期:2015-03-21。
基金项目:山东省自然基金联合专项项目（ZR2012CL05）；山东省重点研发计划项目（2015GNC111018）；滨州学院科研基金项目（BZXYG1414）
作者简介:李学平(1978-),女,山东临沂人,副教授,博士,主要从事陆地环境微生物研究。E-mail:lixueping2008@163.com