摘要
对不同利用方式下红壤的溶磷菌进行筛选，得到7株优势菌株，观察并测定了各初选菌株的菌落特征、生长速度及溶磷能力。结果表明，7株溶磷菌株的HD／CD值（溶磷圈直径HD与菌落直径CD的比值）范围在1．47～3．45之间，有效溶磷量在11．27～136．27mg·L^-1之间，均具有较强溶磷作用。其中，CY06菌株在固体培养条件下的HD／CD值和液体培养条件下的有效溶磷量均显著高于其他菌株，且该菌株对磷酸铝的有效溶磷量显著高于其他难溶磷酸盐，有望成为开发红壤高效微生物磷肥的优良微生物资源。
Seven strains of phosphorus solubilizing bacteria were screened out of red soils under different land use patterns and cultured for determination of characteristics, growth rate and phosphorus solubilizing capability. Results show that their HD/CD ratios ranged from 1.47 to 3.45, and their phosphorus solubilizati0n rate in broth culture were in the range between 11.27 and 136.27 mg·L^-1, showing they were all quite high in phosphorus solubilizing capacity. Strain CY06 was the highest among the seven, and moreover it seemed to be more efficient in solubilizing A1PO4 than in other insoluble phosphates. So,it is a promise microbial resource for development of high efficiency biological phosphorus fertilizer.
出处
《生态与农村环境学报》
CAS
CSCD
北大核心
2006年第3期37-40,共4页
Journal of Ecology and Rural Environment
基金
江西省科技重点农业攻关资助项目
关键词
红壤
溶磷菌
筛选
溶磷能力
red soil
phosphorus-solubilizing bacteria
screening
phosphorus solubilizing capability
