搜索结果: 1-15 共查到“土壤学 clay”相关记录17条 . 查询时间(0.141 秒)
Impact of water quality, cultivation, and cropping systems on infiltration and physical properties of an arid clay soil
aggregate stability crop cover infiltration tillage wastewater
2015/3/10
Irrigation with treated wastewater is essential for increasing crop production in arid and semi arid regions. Field experiments were conducted on rainfed clayey soil to investigate the impact of water...
Temporal variations of runoff and sediment in different soil clay contents using simulated conditions
clay erosion plot rainfall simulator
2015/3/9
Soil clay content (SCC) plays an essential role in the processes of infiltration, seal and crust formation, runoff, and soil erosion. The role played by SCC in water erosion has received much attentio...
Numerical Study of Macropore Impact on Ponded Infiltration in Clay Soils
ponded infiltration macropores and fractures preferential flow single-porosity system dual-permeability system HYDRUS-1D
2015/1/28
The single-porosity and dual-permeability models in HYDRUS-1D (Šimůnek et al. 1998, 2003) were used to simulate variably-saturated water movement in clay soils with and without macropores. N...
Mineralization of nitrogen from 15N labeled crop residues at varying temperature and clay content
Rice and wheat residues straw N-mineralization immobilization
2011/2/22
A laboratory incubation experiment was carried out for 85 days to monitor the N mineralization during the decomposition of 15N labeled wheat and rice straws incorporated at 5 g kg-1 soil at varying te...
Effects of Soil Clay Content on Water Balance and Productivity in Rainfed Lowland Rice Ecosystem in Northeast Thailand
Oryza sativa Paddy Percolation Seepage Water table
2009/7/23
Water availability is one of the determinants of productivity of rainfed lowland rice (Oryza sativa L.). Quantifying water losses from a paddy field, such as deep percolation and lateral seepage, assi...
Effects of Wet Condition and Application of Coated Urea on Yield and Nitrogen Accumulation in Soybean Grown in the Field Converted from Heavy Clay Paddy in Hokuriku Area
Coated urea Hokuriku area Nitrogen content Soybean (Glycine max Merr.) Upland field converted from heavy clay paddy Ureide-N
2009/7/8
In Hokuriku area, the field converted from heavy clay paddy is often wet, but most of soybean is cultivated in such fields. Soybean differentiates flower buds in the rainy season, which is from late ...
Effect of applied water and discharge rate on wetted soil volume in loam or clay-loam soil from an irrigated trickle source
Trickle irrigation wetting front wetted volume
2009/3/4
This study was designated to determine the effect of different applied water by use of different emitter discharges on the wetting patterns of a loam or clay-loam soil under trickle source. Irrig...
The Influence of Clay Content, Organic Carbon and Land Use Types on Soil Aggregate Stability and Tensile Strength
Tensile strength GIS soil aggregate stability organic carbon clay content
2009/1/13
Soil tensile strength (TS) and aggregate stability (AS) values can be used as indicators of soil structural quality. The objective of this study was to determine the influences of land use types, soil...
Clay Minerals, Ca/Mg Ratio and Fe-Al-Oxides in Relation to Structural Stability, Hydraulic Conductivity and Soil Erosion in Southeastern Turkey
Clay minerals structural stability hydraulic conductivity erosion calcium/magnesium ratio
2009/1/12
Studies of clay mineralogy and related chemical composition are rarely connected with implications for soil management in the field. However, this study attempts to manifest the practical utilization ...
Using Advanced Spectral Analyses Techniques as Possible Means of Identifying Clay Minerals
Remote sensing spectral analysis X-ray diffraction clay mineralogy
2009/1/12
Spectral analyses, one of the most advanced remote sensing techniques, were used as a possible means of identifying the mineralogy of the clay fractions that corresponded to the Küçük Menderes ...
Effects of Minimum and Conventional Tillage Systems on Soil Properties and Yield of Winter Wheat（Triticum aestivum L.）in Clay-Loam in the Çanakkale Region
Minimum tillage aggregation penetration resistance bulk density wheat yields
2009/1/12
The experiment was conducted during the 2001-2003 cropping period to evaluate the effects of 3 tillage systems, conventional tillage (CT), and minimum tillage with rototiller (MTR) and disc (MTD), on...
Water repellency of clay, sand and organic soils in Finland
Water repellency hydrophobicity infiltrometer ethanol clay soil sand soil organic soil boreal climate zone
2010/8/9
Water repellency (WR) delays soil wetting process, increases preferential flow and may give rise to surface runoff and consequent erosion. WR is commonly recognized in the soils of warm and temperate ...
Effects of repeated phosphorus fertilisation on field crops in Finland 1.Yield responses on clay and loam soils relation to soil test P values
Acid ammonium acetate method optimal soil test P soil acidity soil phosphorus
2010/8/10
In order to update phosphorus (P) fertiliser recommendations for the Finnish clay and loam soils enriched with applied P, the effects of repeated P fertilisation on the yields of cereal and other crop...
Effect of Eggshell Powder on the Stabilizing Potential of Lime on an Expansive Clay Soil
Eggshell powder stabilization lime clay soil
2010/11/8
Eggshell Powder (ESP) has not been used as a stabilizing material; however, it could be a supplement for industrial lime. This study was meant to study the effect of eggshell powder on the stabilizing...
Effect of preceding crops and green manure on the fertility of clay loam soil
clay loam legume crops green manure humus winter wheat
2010/1/13
Influence of red clover (Trifolium pratense L.), sown lucerne (Medicago sativa L.), vetch and oat mixture (Vicia sativa L., Avena sativa L.) and green material of these legume crops used as green manu...