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草业科学  2014 

石河子绿洲区苜蓿地丛枝菌根真菌的多样性及与土壤因子的关系

DOI: 10.11829\j.issn.1001-0629.2013-0624, PP. 1666-1672

Keywords: 丛植菌根真菌,孢子密度,多样性,相关性

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Abstract:

?以石河子绿洲区苜蓿(Medicagosativa)田为研究对象,测定各类采样地土壤养分含量、苜蓿根际AM真菌物种多样性及其与土壤因子的关系。在采样地植被根际土壤中共鉴定出3属24种AM真菌,其中无梗囊霉属(Acaulospora)6种,球囊霉属(Glomus)14种,盾巨孢囊霉属(Scutellaspora)4种,各采样地球霉囊属均为优势种群,并且在各类采样地均出现。通过对土壤因子和孢子密度的相关性分析发现,孢子密度与土壤速效磷、碱解氮呈显著负相关关系(P<0.01),与土壤速效钾、pH和有机质呈现一定的相关性,但不显著(P>0.05)。

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