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نمذجة انتقال النترات في تربة جبسية تحت ظروف جريان غير مشبع
Other Title(s)
Modeling of NO3 transport in gypsiferous soil under unsaturated flow
Joint Authors
رمزي محمد شهاب
مهاوش، نور الدين محمد
أحمد عبد الله فتاح
Source
Issue
Vol. 8, Issue 3 (31 Aug. 2021), pp.1-12, 12 p.
Publisher
Al-Muthanna University Agriculture College
Publication Date
2021-08-31
Country of Publication
Iraq
No. of Pages
12
Main Subjects
Topics
Abstract EN
This study was conducted to determine the effect of gypsum content and depth of water head on displacement and transport of nitrate in gypsiferous soil under unsaturated flow conditions.
Also, to predict the concentration of nitrate using convection dispersion model (CDE).
Soil columns with 63, 97, 142, 180, and 236 g kg-1 of gypsum were prepared.
200 mg L-1 of potassium nitrate were added to the surface of each soil column.
The soil columns were leached by intermittent ponding in 2 pore volumes of water.
A constant head depth of 0.005, 0.01, and 0.015 m of water was kept on the top of soil column.
Samples of effluent were collected for measuring nitrate concentration.
The CDE model was analyzed to estimate the best fitting between measured and predicted nitrate concentration, and to calculate dispersion coefficient (D), the retardation factor (R), and Peclet number (P).
Results showed that CDE can be used to predict nitrate concentration in soil.
Good fit was observed to describe breakthrough curves (BTC's), and predict the transport of nitrates in the leachate of gypsum soil columns.
D values increased with the increase in the content of soil gypsum and decrease with increase the water head.
Its values ranged between 6.48-8.76 m2 h-1.
P and pore water velocity (v) decreased with the increase in soil gypsum content.
The R values were less than 1 for all treatments.
Corresponding author: E-mail(ramzishihab@tu.
edu.
iq) Al- Muthanna University All rights reserved
American Psychological Association (APA)
رمزي محمد شهاب وأحمد عبد الله فتاح ومهاوش، نور الدين محمد. 2021. نمذجة انتقال النترات في تربة جبسية تحت ظروف جريان غير مشبع. مجلة المثنى للعلوم الزراعية،مج. 8، ع. 3، ص ص. 1-12.
https://search.emarefa.net/detail/BIM-1350708
Modern Language Association (MLA)
رمزي محمد شهاب....[و آخرون]. نمذجة انتقال النترات في تربة جبسية تحت ظروف جريان غير مشبع. مجلة المثنى للعلوم الزراعية مج. 8، ع. 3 (2021)، ص ص. 1-12.
https://search.emarefa.net/detail/BIM-1350708
American Medical Association (AMA)
رمزي محمد شهاب وأحمد عبد الله فتاح ومهاوش، نور الدين محمد. نمذجة انتقال النترات في تربة جبسية تحت ظروف جريان غير مشبع. مجلة المثنى للعلوم الزراعية. 2021. مج. 8، ع. 3، ص ص. 1-12.
https://search.emarefa.net/detail/BIM-1350708
Data Type
Journal Articles
Language
Arabic
Notes
-
Record ID
BIM-1350708