Effect of urea fertilizer concentration on water and nitrogen transport and transformation in soil in a film‐hole multi‐line interference infiltration system*

2021 ◽  
Author(s):  
Yunfei Tuo ◽  
Fangyuan Shen ◽  
Cuiping Yang ◽  
Lijuan Zhang ◽  
Fei Wang ◽  
...  
Keyword(s):  
Nitrogen Transport ◽  
Transport And Transformation ◽  
Urea Fertilizer ◽  
Line Interference

scholarly journals Numerical Analysis of the Transport and Fate of Nitrate in the Soil and Nitrate Leaching to Drains

2001 ◽  
Vol 1 ◽  
pp. 170-180 ◽  
Author(s):  
Alaa El-Sadek ◽  
Mona Radwan ◽  
Jan Feyen
Keyword(s):  
Nitrate Leaching ◽  
Initial Conditions ◽  
Continuous Cropping ◽  
Nitrogen Transport ◽  
State Variables ◽  
Nitrogen Application ◽  
Transport And Transformation ◽  
Bottom Boundary Condition ◽  
Rainfall Depth ◽  
Simulation Results

In this study, the transport and fate of nitrate within the soil profile and nitrate leaching to drains were analyzed by comparing historic field data with the simulation results of the DRAINMOD model. The nitrogen version of DRAINMOD was used to simulate the performance of the nitrogen transport and transformation of the Hooibeekhoeve experiment, situated in the sandy region of the Kempen (Belgium) and conducted for a 30-year (1969–1998) period. In the analysis, a continuous cropping with maize was assumed. Comparisons between experimentally measured and simulated state variables indicate that the nitrate concentrations in the soil and nitrate leaching to drains are controlled by the fertilizer practice, the initial conditions, and the rainfall depth and distribution. Furthermore, the study reveals that the model used gives a fair description of the nitrogen dynamics in the soil and subsurface drainage at field scale. From the comparative analysis between experimental data and simulation results it can also be concluded that the model after calibration is a useful tool to optimize as a function of the combination “climate-crop-soil-bottom boundary condition” the nitrogen application strategy resulting in an acceptable level of nitrate leaching for the environment.

Nitrogen transport and transformation in the saturated-unsaturated zone under recharge, runoff, and discharge conditions

2016 ◽  
Vol 23 (9) ◽  
pp. 8741-8748 ◽  
Author(s):  
Zhifei Ma ◽  
Xinying Lian ◽  
Yonghai Jiang ◽  
Fanhua Meng ◽  
Beidou Xi ◽  
...  
Keyword(s):  
Unsaturated Zone ◽  
Nitrogen Transport ◽  
Transport And Transformation

Aspects of Nitrogen Transport and Transformation in Headwater Streams

1981 ◽  
pp. 113-139 ◽  
Author(s):  
N. K. Kaushik ◽  
J. B. Robinson ◽  
W. N. Stammers ◽  
H. R. Whiteley
Keyword(s):  
Headwater Streams ◽  
Nitrogen Transport ◽  
Transport And Transformation
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