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春小麦和苜蓿根际溶磷菌筛选及其溶磷能力测定

The screening of phosphobacteria and solubilizing phosphate ability in the rhizosphere of alfalfa and wheat

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【Author】 FENG Rui-zhang~(1),FENG Yue-hong~(1),YAO Tuo~(1,3),LONG Rui-jun~(1,2),KANG Ai-ming~(4) (1.Faculty of Grassland Science,Gansu Agricultural University,Gansu,Lanzhou 730070;2.Northwest Institute of Plateau Biology,Chinese Academy of Sciences,Qinghai,Xining 810008;3.Key Laboratory of Arid and Grassland Ecology,Ministry of Education,Lanzhou University,Gansu,Lanzhou 730000;4.Institute of Animal Husbandry and Veterinary of Lanzhou,Gansu,Lanzhou 730050,China)

【机构】甘肃农业大学草业学院；兰州市畜牧兽医研究所甘肃兰州730070；甘肃兰州730070；甘肃兰州730070；兰州大学干旱与草地生态教育部重点实验室；甘肃兰州730000；中国科学院西北高原生物研究所；青海西宁810008；甘肃兰州730050；

【摘要】对春小麦(Triticum aestivum)和苜蓿(Medicago sativa)根际和非根际土壤中溶磷菌进行分离得到溶磷菌株368株,小麦和苜蓿根际溶磷菌数量分布为:根际土(RS)>远离根际土(NRS)>根表(RP)>根内(HP)。利用溶磷圈法初步筛选出66株具有较高溶磷能力的菌株,经钼蓝比色法测定其溶磷量,获得12株溶磷量大于100 mg/L的高效溶磷菌,且发现溶磷能力与pH值没有显著相关性。更多还原

【Abstract】 In this paper,368 phosphobacteria strains from rhizosphere of wheat and alfalfa were isolated and the distribution in different section presented as: soil adhering to roots(RS)>soil away from roots(NRS)>rhizoplan of roots(RP)>histoplan(HP).66 strains with higher ability of dissolving phosphorus were identified by means of phosphorus hole.Moreover,12 strains with higher capacity of dissolving phosphorus than 100 mg/L in broth assay were screened.The relationship between pH and phosphorus solubizition were also discussed and there were no close relationship between the ability of phosphorus solubilization and pH.更多还原

【关键词】溶磷菌；溶磷能力； pH值；春小麦；苜蓿；根际；
【Key words】 phosphobacteria； capacity of dissolving phosphorus； pH； Triticum aestivum； Medicago sativa； rhizosphere；

【基金】国家科技公关计划项目(2002BA901A29);甘肃省科学技术攻关项目(2GS035-A41-001-04);中国博士后科学基金(200403517);教育部高等学校优秀青年教师教学科研奖励基金

【文献出处】甘肃农业大学学报 ,Journal of Gansu Agricultural University , 编辑部邮箱 ,2005年05期

【分类号】S512.12;S541.9
【被引频次】64
【下载频次】690

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