Shape of the water table in tile drained land
نویسندگان
چکیده
منابع مشابه
Treatment of drainage water with industrial by-products to prevent phosphorus loss from tile-drained land.
Tile drained land with phosphorus (P)-rich topsoil is prone to P loss, which can impair surface water quality via eutrophication. We used by-products from steel and energy industries to mitigate P loss from tile drains. For each by-product, P sorption maximum (P(max)) and strength (k) were determined, while a fluvarium trial assessed P uptake with flow rate. Although two ash materials (fly ash ...
متن کاملEvaluation of the CERES-Maize water and nitrogen balances under tile-drained conditions$
The CERES-Maize model was developed to investigate how variations in environmental conditions, management decisions, and genetics interact to aect crop development and growth. A tile drainage subroutine was incorporated into CERES-Maize to improve soil-water and nitrogen leaching under subsurface tile drainage conditions. The purpose of this work was to evaluate the soil-water, soil-nitrogen, ...
متن کاملWater Budget in a Tile Drained Watershed under Future Climate Change Using SWATDRAIN Model
The SWATDRAIN model was developed by incorporating the subsurface flow model, DRAINMOD, into a watershed scale surface flow model, SWAT (Soil and Water Assessment tool), to simulate the hydrology and water quality of agricultural watersheds. The model is capable of simulating hydrology under different agricultural management and climate scenarios. As an application of the SWATDRAIN model, the i...
متن کاملTwo-dimensional modelling of preferential water flow and pesticide transport from a tile-drained field
Preferential flow through soil macropores in tile drained soils can significantly increase the risk of pollution of surface water bodies by agricultural chemicals such as pesticides. While many field studies have shown the importance of preferential flow in tile-drained fields, few have included detailed numerical modelling of the processes involved. The objective of this study was to compare f...
متن کاملPhosphorus transport pathways to streams in tile-drained agricultural watersheds.
Agriculture is a major nonpoint source of phosphorus (P) in the Midwest, but how surface runoff and tile drainage interact to affect temporal concentrations and fluxes of both dissolved and particulate P remains unclear. Our objective was to determine the dominant form of P in streams (dissolved or particulate) and identify the mode of transport of this P from fields to streams in tile-drained ...
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ژورنال
عنوان ژورنال: Hilgardia
سال: 1928
ISSN: 0073-2230
DOI: 10.3733/hilg.v03n05p143