检索结果-南通市图书馆

Effect of Long-Term Soil Management on the Mutual Interaction Among Soil Organic Matter, Microbial Activity and Aggregate Stability in a Vineyard

引用

Pedosphere 2018年第2期28卷 288-298页

作者： Sergio A.BELMONTE Luisella CELI Ruby J.STAHEL Eleonora BONIFACIO Vittorino NOVELLO Ermanno ZANINI Kerri L.STEENWERTH Department of Agricultural Forest and Food Sciences Turin University USDA-ARS Crops Pathology and Genetics Research Unit

Vineyard management practices to enhance soil conservation principally focus on increasing carbon(C)input,whereas mitigating impacts of disturbance through reduced tillage has been rarely ***,information is lacking on the effects of soil management practices adopted in the under-vine zone on soil *** this work,we evaluated the long-term effects(22 years)of alley with a sown cover crop and no-tillage(S+NT),alley with a sown cover crop and tillage(S+T),and under-vine zone with no vegetation and tillage(UV)on soil organic matter(SOM),microbial activity,aggregate stability,and their mutual interactions in a California vineyard in *** biomass,microbial biomass and activity,organic C and nitrogen(N)pools,and SOM size fractionation and aggregate stability were *** characteristics only partially reflected the differences in vegetation biomass *** C and N pools and microbial biomass/activity in S+NT were higher than those in S+T,while the values in UV were intermediate between the other two ***,S+NT also exhibited higher particulate organic matter C in *** differences were found in POM C between S+T and UV,but the POM fraction in S+T was characterized by fresher *** stability was decreased in the order:S+NT>UV>S+***,even if shallow and performed infrequently,had a negative effect on organic C and N pools and aggregate ***,the combination of a sown cover crop and reduced tillage still limited SOM accumulation and reduced aggregate stability in the surface soil layer of vineyards,suggesting relatively lower resistance of soils to erosion compared to no-till systems.

关键词： loamy Ultisol microbial biomass permanent grass soil organic matter fractionation soil respiration tillage vegetationbiomass

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Evaluation of Shear Strength and Cone Penetration Resistance Behavior of Tropical Silt Loam Soil under Uni-Axial Compression

引用

Open Journal of Soil Science 2012年第2期2卷 95-99页

作者： Seth I. Manuwa Omolola C. Olaiya Department of Agricultural Engineering School of Engineering and Engineering Technology The Federal University of Technology Akure Nigeria.

Laboratory investigations were conducted to study strength characteristics of silt loam soil of Ilorin, Kwara State, Nigeria, under uni-axial compression tests. The main objective of this study was to evaluate the effects of applied pressure and moisture content on strength indices such as bulk density, penetration resistance and shear strength of the soil and to develop relationships between the strength indices for predictive purposes necessary in soil management. The compression was carried out at different moisture contents determined according to the consistency limits of the soil. The applied pressure ranged from 75 to 600 kPa. Values of bulk density, penetration resistance and shear strength increased with increase in moisture content up to peak values after which the values decreased with further increase in moisture content. Regression models were used to describe the trends in the results for the soil. Results also showed that bulk density and soil strength normally regarded as indicators of soil quality are affected by moisture content and applied pressure and that these properties can be predicted using the models generated from the study.

关键词： loamy Soils Applied Pressure Bulk Density Penetration Resistance Moisture Content Shear Strength Nigeria

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：