耐氨固氮菌分泌物对水稻秧苗生长的影响  

INFLUENCE OF EXUDATES OF AMMONIUM-RESISTANT N_2 -FIXING BACTERIA ON THE GROWTH OF RICE SEEDLING

作　　者：丘明祺[1] 卢秋雁[1] 朱红惠[1] 邱晓颖[1] 丘元盛[1] 

机构地区：[1]广东省微生物研究所,广州510070

出　　处：《微生物学通报》2002年第4期1-4,共4页Microbiology China

基　　金：国家高技术研究发展计划项目("863项目")(No.101-03-04-01)

摘　　要：研究了催娩克氏菌(Klebsiella oxytoca)的不同菌株(耐氨固氮型、野生型、不固氮型)对杯栽水稻秧苗生长的影响,发现耐氨固氮菌可分泌某种植物生长促进物质。此类物质可被阳离子树脂吸附,在80℃下活性不受影响。在适宜浓度下,可使水稻秧苗的根重和苗重增加30％。By using cup culture, influence of different strains (ammonium-resistant N2-fixing type, wild type, none N2-fixing type) of Klebsiella oxytoca on the growth of rice seedling was compared. It was discovered that ammonium-resistant N2 -fixing bacteria could excrete some plant growth promoting substance, which could be adsorbed by cation resin. It' s activity wouldn't be affected at 80℃. At optimal concentration, the weight of rice root and seedling were increased by

关 键 词：耐氨固氮菌分泌物 水稻 秧苗生长 植物生长促进物质 

分 类 号：S144[农业科学—肥料学]