| 玉米根际与非根际解磷细菌的分布特点 |
| |
| 引用本文： | 赵小蓉,林启美,孙焱鑫,张有山,张美庆.玉米根际与非根际解磷细菌的分布特点[J].生态学杂志,2001,20(6):62-64. |
| |
| 作者姓名： | 赵小蓉 林启美 孙焱鑫 张有山 张美庆 |
| |
| 作者单位： | 1. 中国农业大学土壤和水科学系,
2. 北京市农林科学院植物营养与资源研究所, |
| |
| 基金项目： | 北京市自然科学基金重点项目(6971003)资助. |
| |
| 摘 要： | 植物光合作用产物约有 12 %～ 5 0 %通过根系进入根际土壤中 ,不同的植物 ,同一植物不同的生长发育时期 ,不仅根际分泌物的数量有差异 ,而且分泌物的种类也不同4 ] 。这些分泌物不仅是微生物很好的培养基 ,而且一些分泌物可能抑制或有利于甚至刺激某些微生物的繁殖 ,从而导致根际微生物种群结构的变化。根际微生物的数量、活性和群落结构及其变化 ,直接影响到植物吸收水分、养分 ,也影响植物对恶劣环境的抵抗能力 ,尤其是与病菌的侵入和感染关系非常密切6] 。Ｐ是植物最重要的营养元素之一 ,大多数土壤都具有很强的固定Ｐ的能力 ,Ｐ肥的利…
|
| 关 键 词： | 玉米 非根际土壤 解磷细菌 微生物 分布 |
| 文章编号： | 1000-4890(2001)06-0062-03 |
| 修稿时间： | 2000年3月10日 |
Phosphobacteria Distribution in Rhizophere and Nonrhizosphere Soil of Corn |
| |
| Zhao Xiaorong,Lin Qimei.Phosphobacteria Distribution in Rhizophere and Nonrhizosphere Soil of Corn[J].Chinese Journal of Ecology,2001,20(6):62-64. |
| |
| Authors: | Zhao Xiaorong Lin Qimei |
| |
| Abstract: | Rhizosphere and nonrhizosphere soils were sampled from corn field at harvest time.Total number and genus of the bacteria mineralizing lecithin or dissolving phosphate were measured.It was found that the number of either organic or inorganic phosphobacteria in the rhizosphere soil was 10 to 20 times higher than those in the nonrhizosphere soil.The community structure was much more complicated in the rhizosphere than in the nonrhizosphere.Pseudomonas and Flavobacteria were advantageous orgainc phosphobacteria in the rhizosphere, but Erwinia for inorganinc phosphobacteria.In nonrhizosphere, most of organic phosphobacteria were Bacillus. However, no advantageous genus of inorganic phosphobacteria were found in the nonrhizosphere soil. |
| |
| Keywords: | corn rhizosphere pohsphobacteria |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
