| 菜园土壤微生物生态特征与土壤理化性质的关系 |
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| 引用本文： | 黎宁,李华兴,朱凤娇,刘远金,邝培锐.菜园土壤微生物生态特征与土壤理化性质的关系[J].应用生态学报,2006,17(2):285-290. |
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| 作者姓名： | 黎宁 李华兴 朱凤娇 刘远金 邝培锐 |
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| 作者单位： | 1. 华南农业大学资源环境学院,广州,510642
2. 广州市白云区农业局,广州,510405 |
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| 摘 要： | 对广州白云区64个菜园土壤样本的研究表明，微生物碳与土壤全氮、碱解氮、有效钾、阳离子交换量和有机质,微生物氮与土壤全氮、全磷、阳离子交换量及有机质,土壤基础呼吸与土壤全氮、碱解氮、全钾、阳离子交换量及有机质,AWCD值与全氮及有机质含量,以及Shannon多样性指数与全氮和阳离子交换量均呈显著正相关关系.较低的碱解氮含量使土壤微生物碳、土壤基础呼吸和呼吸商的值升高，过高的碱解氮则使呼吸商下降；过高的土壤有效磷降低微生物碳、微生物氮和微生物呼吸商.有效磷/碱解氮比值过高降低了土壤微生物碳、微生物氮、微生物碳氮比及土壤基础呼吸.土壤微生物生态特征与土壤理化性质关系密切,有效养分过高及养分比例不适当对土壤微生物均存在不利影响.
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| 关 键 词： | 菜园土 土壤微生物生态特征 土壤理化性质 |
| 文章编号： | 1001-9332(2006)02-0285-06 |
| 收稿时间： | 2005-04-26 |
| 修稿时间： | 2005-08-08 |
Relationships between soil microbial ecological characteristics and physical-chemical properties of vegetable garden soil |
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| LINing,LI Huaxing,ZHU Fengjiao,LIU Yuanjin,KUANG Peirui.Relationships between soil microbial ecological characteristics and physical-chemical properties of vegetable garden soil[J].Chinese Journal of Applied Ecology,2006,17(2):285-290. |
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| Authors: | LINing LI Huaxing ZHU Fengjiao LIU Yuanjin KUANG Peirui |
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| Affiliation: | 1.College of Resources and Environmental Science, South China Agricultural University, Guangzhou 510640, China ; 2. Agricultural Bureau of Baiyun District, Guangzhou 510405, China |
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| Abstract: | The study on the 64 vegetable garden soil samples in the Baiyuan District of Guangzhou City showed that there were significantly positive correlations of soil microbial biomass carbon (C_ mic ) with soil total N,alkali-hydrolygable N,available K,cation exchange capacity (CEC) and organic matter (OM),of soil microbial biomass nitrogen (N_ mic ) with soil total N,total P,CEC and OM,of soil basal respiration (SBR) with soil total N,alkali-hydrolygable N,available K,CEC and OM,of AWCD with soil total N and OM,and of Shannon diversity index with soil total N and CEC.Low alkali-hydrolygable N increased C_ mic ,SBR,and metabolic quotient (qCO_2),while high alkali-hydrolygable N decreased qCO_2.High available P decreased C_ mic ,N_ mic and microbial quotient,and a high ratio of available P to alkali-hydrolygable N was related to the decrease of C_ mic ,N_ mic ,C_ mic /N_ mic and SBR.It was suggested that there were significant correlations between soil microbial ecological characteristics and physico-chemical properties,and excessive available nutrients or inappropriate ratios of alkali-hydrolygable N to available P in soil were harmful to soil microbes. |
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| Keywords: | Vegetable garden soil Soil microbial ecological characteristics Soil physical and chemical properties |
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