| 塔里木河下游几种荒漠植物根际土壤微生物及其活性 |
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| 引用本文： | 王卫霞,罗明,潘存德.塔里木河下游几种荒漠植物根际土壤微生物及其活性[J].中国沙漠,2010,30(3):571-576. |
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| 作者姓名： | 王卫霞 罗明 潘存德 |
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| 作者单位： | 1. 新疆农业大学,林学与园艺学院,新疆,乌鲁木齐,830052
2. 新疆农业大学,农学院,新疆,乌鲁木齐,830052 |
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| 基金项目： | 国家科技支撑计划，新疆科技重大专项 |
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| 摘 要： | 研究了塔里木河下游7种典型的优势荒漠植物的根际微生物数量、群落组成及其活性。结果表明:荒漠植物根际微生物数量、组成与根外有较大差异,具有不同的根际效应。黑果枸杞、刚毛柽柳、花花柴、盐穗木具有显著的根际正效应,其根际细菌的R/S为1.26~150.42,以黑果枸杞根际效应最为突出。骆驼刺、罗布麻和河西苣则产生负根际效应。生理群微生物氨化细菌和纤维素分解菌均表现出强烈的正根际效应,而硝化细菌未检出。荒漠植物的生长对根际土壤脲酶、碱性磷酸酶具有较强的促进作用,活性大于非根际土壤,但不同荒漠植物根际对土壤呼吸作用强度,过氧化氢酶活性的影响表现出较大差异。总体而言,荒漠植物增加了根际微生物的数量及活性,促进了土壤养分的积累和转化,对于维持荒漠生态系统的功能具有重要的作用。灌木的根际效能优于草本植物,可作为新疆受损荒漠生态系统植被恢复与重建优先考虑的物种。
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| 关 键 词： | 荒漠植物 根际 微生物 生物活性 塔里木河下游 |
| 收稿时间： | 2009-10-10; |
Microorganisms and Its Biological Activity in Rhizospheric Soil around Desert Plants at the Lower Reaches of Tarim River,Xinjiang,China |
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| WANG Wei-xia,LUO Ming,PAN Cun-de.Microorganisms and Its Biological Activity in Rhizospheric Soil around Desert Plants at the Lower Reaches of Tarim River,Xinjiang,China[J].Journal of Desert Research,2010,30(3):571-576. |
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| Authors: | WANG Wei-xia LUO Ming PAN Cun-de |
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| Institution: | WANG Wei-xia1,LUO Ming2,PAN Cun-de1(1.College of Forestry,Xinjiang Agricultural University,Urumqi 830052,China,2.College of Agronomy,China) |
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| Abstract: | The microbial population,community composition and biological activity in rhizospheric soil of seven kinds of typical dominant desert plants at the lower reaches of Tarim River were studied.The results indicated that the rhizospher of the desert plants were quite different from non-rhizosphere in microbial population and composition,and rhizosphere effect is obvious.Several desert plants,such as Lycium ruthenicum,Tamarix hispida,Karelinia caspica and Halostashys caspica,showed obvious positive rhizosphere e... |
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| Keywords: | desert plants rhizosphere microorganism biological activity lower reaches of Tarim River |
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