一株耐盐解磷菌的解磷能力及对玉米敏感期生长的影响  

Phosphate-Solubilizing Ability of a Saline-Alkali Fungus Strain and Effects on the Growth of Corn in Sensitive Period

作　　者：李学平[1] 任加云[1] 邹美玲[1] 荣琨[1] 

机构地区：[1]滨州学院资源环境系,山东滨州256600

出　　处：《水土保持研究》2015年第5期276-278,共3页Research of Soil and Water Conservation

基　　金：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)

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85.21mg/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76.08-65.37mg/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。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 85.21mg/L.The optimum pH which was 8was 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 76.08mg/L to 65.37mg/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.

关 键 词：耐盐解磷菌 玉米 无机磷 

分 类 号：S144[农业科学—肥料学] S513[农业科学—农业基础科学]