Results 21 to 30 of about 309,903 (363)

An experimental study of the relationship between water content and strength of unsaturated expansive soil on canal slope

open access: yesShuiwen dizhi gongcheng dizhi, 2022
The soil layer in the canal first section of the Middle Route of the South-to-North Water Transfer Project (MR-SNWTP) is mainly composed of expansive soil, and changes in water content of the expansive soil affect the stability of the slope.
Bin LI   +7 more
doaj   +1 more source

Water-repellent soil and its relationship to granularity, surface roughness and hydrophobicity: a materials science view [PDF]

open access: yes, 2005
Considerable soil water repellency has been observed at a wide range of locations worldwide. The soil exhibiting water repellency is found within the upper part of the soil profile.
Newton, Michael   +5 more
core   +1 more source

Experimental Study on the Variation of Soil Dielectric Permittivity under the Influence of Soil Compaction and Water Content

open access: yesGeofluids, 2022
The dielectric permittivity of common soils is mainly controlled by water content and porosity, while the latter is closely related to the characteristics of compaction.
Jun Hu   +3 more
doaj   +1 more source

Experimental study on water transfer of soil-rock mixtures under freezing action

open access: yesYantu gongcheng xuebao
The frost-heaving failure of earth-rock dam slopes is mainly caused by the combined action of sand and gravel cushion, frost heaving of dam fills and water migration.
LI Zhuo 1, 2, JIANG Xin 3, ZHANG Jixun 3, ZHAO Yu 3, WANG Yuqing 3, LU Yang 3
doaj   +1 more source

Vertical distribution of soil organic and inorganic carbon under different vegetation covers in two toposequences of the Liudaogou watershed on the Loess Plateau, China

open access: yes, 2018
Understanding the carbon (C) cycle of the terrestrial ecosystem and estimating the C sequestration potential in soils are critical to evaluate ecosystem function and security.
Mao, N (reprint author), Chinese Acad Sci, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China.   +5 more
core   +1 more source

Estimation of Soil Hydraulic Parameters with Measurment of Soil Water Content, Pressure Head or Measurment the Simultaneously by Inverse Method [PDF]

open access: yesعلوم و مهندسی آبیاری, 2014
Most processes of soil and water in the field occur in unsaturated conditions.In the field, It’s possible to estimate soil hydraulic properties by measurement of soil water content and soil water pressure head in different times, using inverse method. In
Maedeh MahmodianShoshtari   +2 more
doaj  

Mechanical Characteristics of Rice Root–Soil Complex in Rice–Wheat Rotation Area

open access: yesAgriculture, 2022
In order to explore the mechanical characteristics of stubble breaking and provide a theoretical basis for the design of a stubble breaking and crushing blockage prevention device, an orthogonal test with three factors (water content, bulk weight, and ...
Huibin Zhu   +5 more
doaj   +1 more source

Improving wheat yield and water use efficiency through soil water-guided furrow irrigation and hydraulic simulation

open access: yesAgricultural Water Management
Despite the increasing adoption of precision irrigation technologies including drip and sprinkler systems, traditional methods such as furrow irrigation remain widely used among small-scale farmers due to their lower costs and simpler management ...
Dong-Hyeon Kim   +3 more
doaj   +1 more source

Carbohydrates in hot water extracts of soil aggregates as affected by long-term management

open access: yes, 2002
Microbial carbohydrates are immediate by-products of microbial metabolism and play an important role in the formation and stabilization of soil structure.
Laborioau, R., Vognsen, L., Debosz, K.
core   +1 more source

Experimental Study on Determining Unsaturated Property of Soil

open access: yes, 1980
This paper deals with the experimental study of hydraulic properties of unsaturated soil. In treating unsaturated zone, a great deal more data are required than are required for the saturated zone, but these properties of soils must be known to apply the
Nishigaki, Makoto, Kono, Iichiro
core   +1 more source

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