宁夏豆科植物根瘤菌资源调查及其生态分布  

Investigation of rhizobium resources of leguminous plants and their ecological distribution in Ningxia

作　　者：杨文权[1] 郭军康[1] 冯春生[1] 韦革宏[1] 

机构地区：[1]西北农林科技大学生命科学学院,陕西杨凌712100

出　　处：《干旱地区农业研究》2007年第5期176-181,共6页Agricultural Research in the Arid Areas

基　　金：全国优秀博士学位论文作者基金(200254);教育部新世纪优秀人才支持计划基金(NCET-04-0953);国家自然科学基金(30470040;30670372);霍英东青年教师基金(101029);高等学校博士点基金(20050712013)

摘　　要：通过对宁夏野生及栽培豆科植物结瘤固氮资源的调查,从24属47种豆科植物根部采集到根瘤样品748份,通过调查显示:兴隆山棘豆和单叶黄芪为新发现的豆科结瘤植物;此地区根瘤主要为黄色或褐色,性状以球形和棒状为主,主要着生在侧根;影响宁夏豆科植物结瘤的因素有水分、土壤肥力和植物的生育阶段;根据生长习性、地理分布和利用状况,将宁夏豆科植物根瘤菌资源分为干旱区、山坡草地区和耕地区。An investigation was made on the nodule and nitrogen fixation resources of wild and cultivated leguminous plants in Ningxia and 748 nodule samples that belonged to 24 genera and 47 species were collected. The results showed： 1） Oacytropis 3cinglongshanica C. W. Chang and Astragalus efoliolatus Hand.-Mazz. were the newly-discovered ones capable of setting nodules. 2） The most nodules were yellow or brown, spherical or claviform, and grown on lateral roots. 3） The water and fertility of soil and the growth stage were important factors that affected the nodulation. 4） According to the growth character, distribution and utilization, the rhizobium of leguminous plants in Ningxia is distributed in aridity, mountainous grassland and plantation area.

关 键 词：豆科植物 根瘤菌资源 生态分布 宁夏 

分 类 号：S154.381[农业科学—土壤学]