نتایج جستجو برای: adequacy irrigation (adirr)

تعداد نتایج: 57539  

Journal: :مدیریت آب و آبیاری 0
زینب میخک بیرانوند دانشجوی کارشناسی ارشد آبیاری و زهکشی، دانشگاه شهید چمران اهواز، دانشکدۀ مهندسی علوم آب، ایران سعید برومند نسب استاد دانشکدۀ مهندسی علوم آب، دانشگاه شهید چمران اهواز، ایران زهرا ایزد پناه استادیار دانشکدۀ مهندسی علوم آب، دانشگاه شهید چمران اهواز، ایران عباس ملکی استادیار دانشکدۀ مهندسی کشاورزی، دانشگاه لرستان، ایران

todays, productivity and efficiency of irrigation have been in the center of the many water-related issues. by using sprinkler irrigation systems in addition to watering easier and automatic, that is a device for raising water application uniformity and efficiency which ultimately will save water consumption and production increase. in this study, four fixed irrigation systems of khorramabad ci...

2012
S. L. Davis M. D. Dukes

The objective of this article is to present summary findings of multiple research studies concerning evapotranspiration (ET) controllers. Each study provided unique information concerning the performance and implementation techniques necessary to ensure successful integration with irrigation systems to optimize scheduling for water conservation. Based on these studies, ET controllers have the p...

2009
E. Bautista M. Niblack

WinSRFR is an integrated software package for analyzing surface irrigation systems. Software functionalities and technical features are described in a companion article. This article documents an example application. The analyzed field is a graded basin (close-ended border) irrigation system. The event analysis tools of WinSRFR are used first to evaluate performance of the irrigation system and...

ژورنال: علوم آب و خاک 2020

The main purpose of the study is the operational simulation of main irrigation canal and evaluation of water delivery and distribution locally, regionally and overall using adequacy, efficiency, and equity indicators and “Desirability of water delivery and distribution” indicator. To achieve this goal, the hydrodynamic model of Roodasht irrigation network’s main canal was developed. The results...

2015
A. Raj Kumar S. Udayakumar

The present study deals with the performance evaluation of five irrigation subsystems by considering eight different criteria. Two Multi criterion Decision Making (MCDM) methods, namely, stochastic extension of PROMETHEE-2 (STOPROM-2) and Multi-Attribute Utility Theory (MAUT) are employed to select the best one among the five irrigation subsystems. Taguchi methodology is employed to minimize th...

Journal: :تحقیقات مهندسی کشاورزی 0
فرزاد پاسیار کارشناس ارشد دانشگاه تربیت مدرس محمدجواد منعم دانشیار دانشکدة کشاورزی دانشگاه تربیت مدرس

an important problem in performance evaluations of irrigation systems is the difficulty of the determining share of structural and operational elements and determining improvement solutions. in most studies, the combined impact of structural and operational elements on the performance of irrigation systems is assessed. some researchers try to separate the effects of structural and operational e...

ژورنال: علوم آب و خاک 2020

This study focused on proposing a new operational perspective within main and lateral irrigation canals based on the economic value of water. To achieve this objective, the operation-economic framework offered in this study consisted of two main components of the PMP model and Operation model. The estimated economic values of water in different regions of the network were employed as the starti...

A. R. Sepaskhah A.A. Kamgar-Haghighi M. Abdolahipour S. Zand-Parsa T. Honar

Supplemental irrigation under prolonged drought conditions has a key role in providing water for transpiration of rain-fed fig trees. The effect of different times and amounts of supplemental irrigation at different distances from the tree trunk on quantity and quality of Estahban rain-fed fig production was evaluated during two years. A randomized complete block design with four replications o...

Journal: :مدیریت آب و آبیاری 0
میناسادات سیدجواد کارشناس ارشد دانشگاه تهران، پردیس ابوریحان، پاکدشت ، ایران. محمود مشعل دانشیار دانشگاه تهران، پردیس ابوریحان، پاکدشت، ایران

one of the consequences of poor management and operation of irrigation systems, poor water delivery and distribution channels and divisions and consequently improper distribution of water level downstream. the study of simulation and performance evaluation software using hydrodynamic sobek varamin irrigation is done. in order to evaluate the network performance and compare the results of simula...

2005
A Jansen

The Water Administration System (WAS) is designed to be a management tool for irrigation schemes and water control offices that want to manage their water accounts and supply water to clients through canal networks, pipelines and rivers. The ultimate aim of WAS is to optimise irrigation water management and minimise management-related distribution losses in irrigation canals. This research proj...

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