香菇菌渣对不同质地土壤团聚体组成的影响  

Effects of Adding Mushroom Residue on Aggregates Composition of Different Texture Soils

作　　者：徐爽 XU Shuang(Hanzhong Vocational and Technical College,Hanzhong 723000,China)

机构地区：[1]汉中职业技术学院,陕西汉中723000

出　　处：《生态与农村环境学报》2023年第4期540-546,共7页Journal of Ecology and Rural Environment

基　　金：陕西省教育厅2020年科学研究计划(20JK0493)。

摘　　要：采用室内恒温培养试验研究了添加香菇菌渣对2种不同质地的土壤水稳性团聚体的组成和性状的影响,以探讨香菇菌渣对土壤物理状态的改善效果。结果表明:添加香菇菌渣主要增加了砂壤土直径1~2 mm和中黏土>3~5 mm团聚体含量。中黏土中添加w=1%的菌渣培养30 d即可明显改善团聚体性状,菌渣添加量w在15%以上时团聚体的平均重量直径和几何均重直径不再随着培养时长的增加而明显增大;砂壤土中菌渣添加量w=15%和30%时,随着培育时长增加,团聚体的平均重量直径和几何均重直径逐渐增大。香菇菌渣培育土壤能够有效改善团聚体状况,对质地较细土壤的改善效果强于质地较粗的土壤。Constant temperature culture experiment was conducted to study the effect of adding mushroom residue on the composition and properties of soil water-stable aggregates with different soil textures.The results show that adding mushroom residue mainly increased the content of 1-2 mm agglomerates in sandy loam soil and the content of 3-5 mm agglomerates in medium clay soil.By adding 1%mushroom residue to the medium clay for 30 days,the properties of the aggregates were significantly improved,while when the proportion of mushroom residue reached to more than 15%.The average weight diameter and geometric average weight diameter of the aggregates did not increase significantly with the increase of the cultivation time.When the proportion of mushroom residue in the sandy loam soil reached to 15%and 30%,the average weight diameter and geometric average weight diameter of the aggregates gradually increased with the increase of the cultivation time.Cultivating soil with mushroom residue can effectively improve the condition of soil aggregates,and the improvement of the finer-textured soil is stronger than the coarser-textured soil.

关 键 词：土壤质地 菌渣 平均重量直径 几何均重直径 

分 类 号：X712[环境科学与工程—环境工程]