| Autor: |
Zapata, N., Playán, E., Skhiri, A., Burguete, J. |
| Předmět: |
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| Zdroj: |
Journal of Irrigation & Drainage Engineering; Jan/Feb2009, Vol. 135 Issue 1, p13-24, 12p, 1 Diagram, 3 Charts, 6 Graphs, 2 Maps |
| Abstrakt: |
The modernization of irrigation districts in Spain is based on the construction of collective pressurized networks equipped with remote control systems. In this paper, a simulation approach is used to explore the benefits of introducing a collective solid-set irrigation control software. The controller works in combination with a district management database, real-time evapotranspiration and meteorology information, and a remote control system. Controller decisions are based on the simulation of sprinkler irrigation performance and on crop–water balance. The decision to irrigate a plot can be guided by the use of two simulation parameters: the estimated application efficiency of the irrigation event (heavily affected by wind speed) and a crop–water stress index. Simulation experiments were performed in a district located at the Ebro basin of Spain. The collective controller resulted in water conservation (with respect to the current situation) of 2,234 and 4,664 m3 ha-1 for corn and alfalfa, respectively, and in an increase in water productivity of up to 91%. Although additional research is needed to produce a reliable collective controller, these preliminary results are encouraging. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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