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大沙鼠扰动对荒漠土壤微生物数量和水肥状况的影响
Authors
吴楠
杨维康
蒋慧萍
Publication date
1 January 2007
Publisher
Abstract
对比分析古尔班通古特沙漠10组大沙鼠(Rhombomys opimus)洞区和无沙鼠扰动对照区20~30 cm土层微生物各类群(真菌、细菌和放线菌)的数量分布,并比较土壤理化性质的差异。结果表明:大沙鼠的活动改变了洞区土壤水肥状况,有利于土壤微生物,尤其是真菌的生长发育。洞区土壤细菌(3.40×105±6.79×104个/g)、放线菌(7.52×104±1.11×104个/g)、真菌(5.03×103±2.05×103个/g)的数量均高于对照区(3.14×105±1.05×105个/g,6.04×104±1.65×104个/g,1.01×103±6.98×102个/g),(t=0.67,p>0.05;t=2.356,p0.05;t=0.052,p>0.05)
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Last time updated on 29/11/2016