نتایج جستجو برای: varamin irrigation network
تعداد نتایج: 713763 فیلتر نتایج به سال:
Due to water use increasing, attention to optimal water resources allocation is needed. In recent decades, the use of intelligent evolutionary methods for optimization of water allocation was focused more by researchers. The aim of this study is to development on water resources planning model that determined the proper cultivation, optimal exploitation of groundwater and surface water resource...
اطلاعات و پارامترهای موجود در شبکه های آبیاری و زهکشی بواسطه وجود جنبه های مختلف فنی ، مدیریتی ، اجتماعی و اقتصادی از گستردگی بسیار زیادی برخوردار بوده و مدیران با حجم وسیعی از اطلاعات مواجه می باشند. از آنجا که قسمت عمده ای از تصمیمات اتخاذ شده توسط مدیران و برنامه ریزان به نوعی به مکان و موقعیتی خاص مربوط می باشد و در واقع ماهیتی مکان مرجع دارد ، لذا وجود اطلاعات جغرافیائی دقیق و مطمئن و به...
the purpose of this descriptive correlational study was to determine problems and success factors among members of water user associations (wuas) in moqan, tajan and varamin areas in northern iran. the population consisted of farmers who were members of water user associations (n= 2,500). using simple random sampling procedure, 262 farmers were selected for the study. a researcher made structur...
Damage caused by water shortages leads to physiological and biochemical changes in metabolism of plants and make them predispose to attack by pests and diseases and reduce the quality of the crops. In order to evaluate the effect of supplemental irrigation on safflower fly (A. helianthi) population of safflower cultivars, an experiment conducted as a split plot based on randomized complete bloc...
Damage caused by water shortages leads to physiological and biochemical changes in metabolism of plants and make them predispose to attack by pests and diseases and reduce the quality of the crops. In order to evaluate the effect of supplemental irrigation on safflower fly (A. helianthi) population of safflower cultivars, an experiment conducted as a split plot based on randomized complete bloc...
Α two-year field experiment was conducted in Varamin-Pishva Branch, Islamic Azad University, Iran to study the impact of drought stress and foliar application some hormones on safflower growth. The induced at three levels considered as main plots. Irrigating after 75% water depletion be normal irrigation (control), irrigating 60 45% depletion, defined mild severe stress, respectively. humic aci...
The improvement of irrigation systems in the Nile Delta is one of the most important attempts in Egypt to implement more effective irrigation technology by improving the existing irrigation networks. Demand delivery system in the existing irrigation network is using of mechanical gates structures to automatically divert water from one portion of an agricultural field to another in the desired a...
BACKGROUND A recent survey of avoidable blindness in Varamin District, Iran, identified moderately high levels of visual impairment (10%) and blindness (1.5%) in people >50 years. This study aimed to define current provision, identify gaps and suggest practical solutions for improving eye health services in this area. METHODS The World Health Organization (WHO) framework for analyzing health ...
sesame could be an appropriate oilseed crop for water limited environments. this research was aimed at studying growth, leaf chlorophyll fluorescence, proline content, yield and yield components of sesame cultivars under different moisture regimes. a 4-replicate split plot rcbd field experiment was conducted at the lavark research farm, college of agriculture, isfahan university of technology, ...
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