耕作方法对土壤真菌数量和群落结构的影响  被引量:3

COMMUNITY STRUCTURE ANALYSIS OF SAPROPHYTIC MICROFUNGI IN STRAW MULCH NO-TILLAGE SOILS

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作  者:高云超[1] 朱文珊[2] 陈文新[2] 

机构地区:[1]广东省农业科学院生物技术研究所,广东广州510640 [2]中国农业大学微生物学系,北京100094

出  处:《华南师范大学学报(自然科学版)》2001年第4期30-36,共7页Journal of South China Normal University(Natural Science Edition)

摘  要:不同耕作方法对土壤真菌数量影响不大 ,但对真菌群落结构和种群构成却有显著的影响 ,翻耕 0 - 10cm土层土壤真菌群落含有 2 9种真菌 ,其中以Chrysosporiummerdarium为优势种 ,Acremoni umbutyri为亚优势种 ;翻耕 10 - 2 0cm土层含有 17种真菌 ,以SterileblackA为优势种 ,Stachybotryschartarum为亚优势种 ;翻耕 2 0 - 30cm土层含有 10种真菌 ,其中以Chaetomiumbostrychodes为优势种 ,SterileblackA为亚优势种 .铁茬 0 - 10cm含 16种真菌 ,其中SterileblackA是优势种 ,Chaetomi umbostrychodes为亚优势种 ;铁茬 10 - 2 0cm土层含有 2 6种真菌 ,优势种为SterileblackA ,亚优势种种为Talaromycesflavus,铁茬 2 0 - 30cm含有 14种真菌 ,其中Chaetomiumbostrychodes为优势种 ,Ta laromycesflavus为亚优势种 .免耕 0 - 10cm土层由 2 3种真菌构成 ,Trichodermaviride和T .koningii为优势种 ,Talaromycestrachyspermus为亚优势种 ;免耕 10 - 2 0cm土层由 14个种类构成 ,Talaromycestra chyspermus为优势种 ,Eupenicilliumbrefeldianum为亚优势种 ;免耕 2 0 - 30cm土壤由 9种真菌组成 。The composition and Adynamics of soil fungi in different tillage methods have been studied, the counts of fungi differed insignificantly, but the composition was characteristic for different tillage soils.The fungi recorded were mostly Deuteromycetes. 29 species were isolated from Conventional Tillage 0-10 cm soil layer and Chrysosporium merdarium was the most dominant fungi. 17 species in Conventional Tillage 10-20 cm soil and Sterile black species A fungus dominant, 10 species in Conventional Tillage 20-30 cm soil and Chaetomium bostrychodes dominant; 16 species in Direct Drilling 0-10 cm soil and Sterile black species A fungus dominant, 26 species in Direct Drilling 10-20 cm soil and Sterile black species A fungus dominant, 14 species in Direct Drilling 20-30 cm soil and Chaetomium bostrychodes dominant; 23 species in No-tillage 0-10 cm soil and Trichoderma viride and T. koningii were dominant, 14 species in No-tillage 10-20 cm soil and Talaromyces trachyspermus dominant, 9 species in No-tillage 20-30 cm soil and Talaromyces trachyspermus dominant.

关 键 词:秸秆覆盖 免耕 真菌 数量 群落组成 土壤微生物 耕作方法 群落结构 

分 类 号:S154.36[农业科学—土壤学]

 

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