נגישות
menu      
חיפוש מתקדם
תחביר
חפש...
הספר "אוצר וולקני"
אודות
תנאי שימוש
ניהול
קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Relative water uptake rate as a criterion for trickle irrigation system design: II. surface trickle irrigation
Year:
2010
Authors :
פרידמן, שמואל
;
.
קומונר, גרגורי
;
.
Volume :
74
Co-Authors:
Communar, G., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Friedman, S.P., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Facilitators :
From page:
1509
To page:
1517
(
Total pages:
9
)
Abstract:
We previously developed a new, coupled-source-sink modeling approach for evaluating an upper bound to the relative water uptake rate (water use efficiency) for two- and three-dimensional geometries, Because the formulated water-flow problem is linear, the relative water uptake rate for any given collection of point (or line) sources and point (or line) sinks is determined by superposing the appropriate solutions while assuming maximum suction at the soil-sink interfaces, In this study, analytical expressions for the maximum possible water uptake rates were determined for various two- and three-dimensional configurations of surface water sources (emitters) and subsurface point (or line) sinks that represent plant roots. Relative water uptake rates were computed for cases of interacting source-sink couples and also for cases of unequal numbers of sources (emitters) and sinks (plants). The water uptake rate can be determined by using as few as three system parameters: the depth and radius of the conceived rooting zone, the soil sorptive number, and design parameters that represent the distances between sources and sinks within rows or between drip lines, Sample computations demonstrate and elucidate the effects of these parameters on the relative water uptake rate of plant roots beneath various configurations of on-surface water sources, For all scenarios, the water uptake rates increased monotonically with increasing radius of the conceived rooting zone or with decreasing separation between emitters or drip lines, We suggest that the calculated relative water uptake rate be used as a design criterion for trickle irrigation systems. © Soil Science Society of America, 5585 Guilford Rd., Madison WI 53711 USA All rights reserved.
Note:
Related Files :
Design criterion
irrigation
rhizosphere
Soils
Source-sink
water flow
water use efficiency
עוד תגיות
תוכן קשור
More details
DOI :
10.2136/sssaj2009.0339
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
25138
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:12
You may also be interested in
Scientific Publication
Relative water uptake rate as a criterion for trickle irrigation system design: II. surface trickle irrigation
74
Communar, G., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Friedman, S.P., Institute of Soil, Water and Environmental Sciences, Agricultural Research Organization, Volcani Center, Bet Dagan 50250, Israel
Relative water uptake rate as a criterion for trickle irrigation system design: II. surface trickle irrigation
We previously developed a new, coupled-source-sink modeling approach for evaluating an upper bound to the relative water uptake rate (water use efficiency) for two- and three-dimensional geometries, Because the formulated water-flow problem is linear, the relative water uptake rate for any given collection of point (or line) sources and point (or line) sinks is determined by superposing the appropriate solutions while assuming maximum suction at the soil-sink interfaces, In this study, analytical expressions for the maximum possible water uptake rates were determined for various two- and three-dimensional configurations of surface water sources (emitters) and subsurface point (or line) sinks that represent plant roots. Relative water uptake rates were computed for cases of interacting source-sink couples and also for cases of unequal numbers of sources (emitters) and sinks (plants). The water uptake rate can be determined by using as few as three system parameters: the depth and radius of the conceived rooting zone, the soil sorptive number, and design parameters that represent the distances between sources and sinks within rows or between drip lines, Sample computations demonstrate and elucidate the effects of these parameters on the relative water uptake rate of plant roots beneath various configurations of on-surface water sources, For all scenarios, the water uptake rates increased monotonically with increasing radius of the conceived rooting zone or with decreasing separation between emitters or drip lines, We suggest that the calculated relative water uptake rate be used as a design criterion for trickle irrigation systems. © Soil Science Society of America, 5585 Guilford Rd., Madison WI 53711 USA All rights reserved.
Scientific Publication
You may also be interested in