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| 1 | Optimization of equitable irrigation water delivery for a large-scale rice irrigation scheme显示文摘Equitable water allocation is essential in an irrigation scheme for obtaining potential crop yields from the entire scheme,especially when water supply is inadequate.An optimization model achieved this goal by coupling an optimal water allocation model with available water supply and irrigation water demand for a river-fed rice irrigation system in Malaysia.This model consists of a paddy field water balance module and an optimization module.The outputs from the module are daily irrigation demand and surface runoff,if there is any.The optimization module consists of an objective function,which minimizes water shortage across the scheme area while maintaining equity in water allocation.This model performs optimization subject to several system constraints,and the decision variable of the model is daily releases or supply to the tertiary canals.Performance of this model remained unaffected under different water supply conditions,and the optimization model reliably examined the effects of alternate water allocation and management rules with field information.It improves efficiency and equity in water allocation with respect to crop growth stages and water shortages rather than simply cutting irrigation supply on a proportional basis to overcome water shortages. | Md Rowshon Kamal Muhammad Iqbal Md Abdul Mojid Mohd Amin Mohd Soom Lai Sai Hin | 2018 | International Journal of Agricultural and Biological Engineering2018，11，5： | 3 |
| 2 | GIS-based irrigation water management for precision farming of rice显示文摘Precision farming aims to manage production inputs over many small management zones rather than on large zones.It is difficult to manage inputs at extremely fine scales,especially in the case of the rice irrigation system.However,site-specific irrigation management can potentially improve the overall water management in comparison to irrigated areas of hundreds of hectares.A critical element of the irrigation scheduling and management is the accurate estimation of irrigation supplies and its proper allocation for the irrigation offtake structures based on the actual planted areas.All irrigation scheduling procedures consist of monitoring indicators that determine the need for irrigation.The final decision depends on the irrigation criterion,strategy and goal.Irrigation scheduling is the decision of when and how much water to apply to a field.The amount of water applied is determined by using a criterion to determine irrigation need and a strategy to prescribe how much water to apply in any situation.The right amount of daily irrigation supply and monitoring at the right time within the discrete irrigation unit is essential to improve the irrigation water management of a scheme.This paper presents the GIS capability to achieve the goal in the view of irrigation strategy and goal with special reference to precision farming of rice.The GIS-based water management model was developed for the scheduling daily irrigation water deliveries and regular monitoring of irrigation delivery performance.The“Scheduling”program computes the right amount of irrigation deliveries based on crop water requirements.The“Monitoring”program gives information on the uniformity of water distribution and the shortfall or excess.The displayed results allow the manager to view maps,tables and graphs in a comprehensible form to ease decision making that where the irrigation amount will be delivered as the season progresses.GIS was used as a useful tool to assist the irrigation water management program in the context of precision farming. | Rowshon M K Amin M S M | 2010 | International Journal of Agricultural and Biological Engineering2010，3，3： | 2 |
| 3 | GIS-based scheduling and monitoring irrigation delivery for rice irrigation system, Part Ⅰ~Ⅱ 显示文摘 | M K Rowshon C T Kwok T S Lee | 2003 | Agricultural Water Management2003，，： | 1 |
| 4 | GIS-Integrated Rice Irrigation Management Information System for a River-Fed Scheme显示文摘 | M. K. Rowshon M. S. M. Amin T. S. Lee A. R. M. Shariff | 2009 | Water Resources Management2009，，14： | 1 |
| 5 | GIS-based scheduling and monitoring irrigation delivery for rice irrigation system,Part Ⅰ~Ⅱ显示文摘 | C T Kwok T S Lee | 2003 | Aricultural Water Management2003，，： | 1 |
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