| 陕北地区油松根际真菌资源初步调查及其与土壤理化性质的关系 |
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| 引用本文： | 杨韧,张好强,唐明.陕北地区油松根际真菌资源初步调查及其与土壤理化性质的关系[J].西北林学院学报,2016,31(5):203-210. |
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| 作者姓名： | 杨韧 张好强 唐明 |
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| 作者单位： | （西北农林科技大学 林学院，陕西 杨陵 712100） |
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| 摘 要： | 为研究陕北不同地区油松（Pinus tabulaeformis）根际真菌的资源与分布，以及与土壤理化性质的关系，分别选择陕北神木、府谷、米脂、榆林、安塞、延安6个样地的油松纯林采集样本分离纯化油松根际真菌，经分离鉴定共得到21种、92株真菌。结果表明，神木、府谷、安塞地区的真菌种类较多，榆林、米脂、延安地区的真菌种类相对较少；不同地区土壤理化性质差异显著，同一地区的不同土层差异不显著。菌根侵染率与土壤理化性质的相关性表明，速效氮、速效磷、有机质与菌根侵染率呈正相关；全氮、全磷、全钾在榆林地区与侵染率呈显著正相关；速效钾在延安地区与侵染率呈显著正相关；含水量在府谷地区与侵染率呈显著正相关。此外，研究还发现陕北地区的油松根部真菌资源分布与土壤理化性质的相关性存在差异，其中外生菌根真菌(ectomycorrhizal fungi,ECMF)与含水量、有机质、速效氮、速效钾的含量呈正相关，与全钾含量呈显著负相关；深色有隔内生菌(dark septate endophytic fungi,DSE)和内生真菌与含水量、有机质、速效氮、速效磷、速效钾呈正相关。因此，菌根侵染率和油松根部真菌资源分布受不同土壤理化性质的影响。
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| 关 键 词： | 油松 真菌资源分布 土壤理化性质 陕北地区 |
A Survey of Root Fungal Resources of Pinus tabulaeformis and ITS Relationship with Soil Physicochemical Properties in Northern Shaanxi |
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| YANG Ren,ZHANG Hao-qiang,TANG Ming. A Survey of Root Fungal Resources of Pinus tabulaeformis and ITS Relationship with Soil Physicochemical Properties in Northern Shaanxi[J].Journal of Northwest Forestry University,2016,31(5):203-210. |
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| Authors: | YANG Ren ZHANG Hao-qiang TANG Ming |
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| Institution: | (College of Forestry,Northwest A&F University,Yangling,Shaanxi 712100,China) |
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| Abstract: | In order to investigate the relationship between Pinus tabulaeformis root associated fungus resources and soil physicochemical properties in north part of Shaanxi,the P.tabulaeformis roots were collected from 6 sampling plots to isolate fungi,including Shenmu,Fugu,Mizhi,Yulin,Ansai,and Yanan.A total of 21 species,92 strains of fungi were isolated.The analyses of fungi resources and soil physicochemical properties indicated that in different samples,fungus species were different,and soil physicochemical properties were significantly different,but no significant difference in different soil layers.Correlation analysis between mycorrhizal infection and soil physicochemical properties indicated that available nitrogen,available phosphorus and organic matter were positively correlated with ectomycorrhizal fungus (ECMF) infection rate.Total nitrogen,total phosphorus,total potassium were positively correlated with ECMF infection rate in Yulin,available potassium was positively related with ECMF infection rate in Yanan,water content was positively correlated with ECMF infection rate in Fugu.In addition,this study also showed that the distribution of fungi resources of the P.tabulaeformis roots was differently correlated with soil physicochemical properties in northern Shaanxi.The ECMF was positively correlated with water content,organic matter,available nitrogen,available potassium,and significantly negative correlated with total potassium.The dark septate endophytic fungus (DSE) was positively correlated with water content,organic matter,available nitrogen,available phosphorus and available potassium.Thus,ECMF infection rate and the distribution of fungus resources of P.tabulaeformis root were differently affected by soil physicochemical properties. |
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| Keywords: | Pinus tabulaeformisPinus tabulaeformis fungus resource distribution soil physicochemical properties Northern Shaanxi |
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