Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
RZWQM simulation of nitrate concentrations in subsurface drainage from manured plots
The root zone water quality model (RZWQM) simulates the effect of swine manure applications on nitrate-nitrogen (NO3-N) concentrations in subsurface drain water from continuous corn for Iowa soils. Measured values of subsurface drain flow, NO3-N concentrations in drainage water, and residual NO3-N in the soil profile from three chisel plow plots for the growing seasons of 1993 and 1995 were used to evaluate the RZWQM. Linear regression between the predicted values for 1993 and 1995, and the measured data gave an R2 value of 0.88 with a slope of 0.96. The overall results of the study indicate that RZWQM is capable of simulating various rate of manure applications in different weather and soil conditions.
RZWQM simulation of nitrate concentrations in subsurface drainage from manured plots
The root zone water quality model (RZWQM) simulates the effect of swine manure applications on nitrate-nitrogen (NO3-N) concentrations in subsurface drain water from continuous corn for Iowa soils. Measured values of subsurface drain flow, NO3-N concentrations in drainage water, and residual NO3-N in the soil profile from three chisel plow plots for the growing seasons of 1993 and 1995 were used to evaluate the RZWQM. Linear regression between the predicted values for 1993 and 1995, and the measured data gave an R2 value of 0.88 with a slope of 0.96. The overall results of the study indicate that RZWQM is capable of simulating various rate of manure applications in different weather and soil conditions.
RZWQM simulation of nitrate concentrations in subsurface drainage from manured plots
Kumar, A. (Autor:in) / Kanwar, R.S. (Autor:in) / Ahuja, L.R. (Autor:in)
Transactions of the ASAE ; 41 ; 587-597
1998
11 Seiten, 32 Quellen
Aufsatz (Zeitschrift)
Englisch
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