نتایج جستجو برای: analyses of water irrigation efficiency 3

تعداد نتایج: 21460839  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - پژوهشکده مهندسی فرایند 1395

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

Journal: :تحقیقات مهندسی کشاورزی 0
غلامعلی کیخا کارشناس ارشد آبیاری و زهکشی مرکز تحقیقات کشاورزی و منابع طبیعی زابل فاطمه کیخایی کارشناس ارشد آبیاری مرکز تحقیقات کشاورزی و منابع طبیعی اراک ناصر گنجی خرم دل عضو هیأت علمی گروه مهندسی آب دانشگاه اراک مهدی کیخا دانش آموخته کارشناسی ارشد آبیاری و زهکشی دانشگاه تهران

this study evaluates the effect of irrigation method on the water use efficiency and yield of onions at the zahak agricultural research station in sistan province. the testing was conducted using a split plot arrangement and a randomized complete block design with three replications during the 2005-2006 crop seasons. irrigation methods were basin and drip tape irrigation and the irrigation leve...

ژورنال: علوم آب و خاک 2017

Considering water scarcity in Iran, application of deficit irrigation or water stress on some crops is inevitable. We need to provide appropriate design for deficit irrigation. Furrow irrigation management to obtain high efficiency and uniformity is difficult. Therefore, to investigate the variation of the input discharge, the cut-off time and furrow length that are effective on the efficiency ...

Journal: :آب و خاک 0
سیدحسین صدرقاین مهدی اکبری هادی افشار محمدمهدی نخجوانی مقدم

abstract this study was conducted to determine the impacts of different drip irrigation method and amount of water on yield and water use efficiency of tomato in varamin agricultural research center, iran. the study was done during two years. experimental design was randomized complete blocks design (rcbd) in split plot with three replications. three different drip irrigation method; surface dr...

Investigation of different irrigation methods on plants is necessary due to limited water resources and the increasing need for food products. The purpose of this study was to evaluate the effect of sprinkler and drip irrigation systems and hormones on morphological and physiological characteristics of potato. Treatments included sprinkler and drip irrigation systems and hormones (gibbere...

ژورنال: علوم آب و خاک 2010
بابازاده, حسین, سرائی تبریزی, مهدی, مدرس ثانوی, سید علی محمد , پارسی نژاد, مسعود ,

Deficit irrigation is one of the irrigation management methods that is used to increase Water Use Efficiency. Considering the internal plant adaptability characteristic to water shortage, Partial Root Drying method has been introduced in recent years. In this field research improvement of Water Use Efficiency for Soybean was determined. This experiment which was conducted at four furrow irrigat...

2015
Bin Yang Xuefa Wen Xiaomin Sun

Agricultural irrigation in the middle reaches of the Heihe River Basin consumes approximately 80% of the total river water. Whether the irrigation depth matches the water uptake depth of crops is one of the most important factors affecting the efficiency of irrigation water use. Our results indicated that the influence of plastic film on soil water δ(18)O was restricted to 0-30 cm soil depth. B...

2008
Michael D. Dukes Lincoln Zotarelli Johannes M. S. Scholberg Rafael Muñoz-Carpena

Plastic mulch and drip irrigation are commonly used in high intensity vegetable production regions such as Florida. Drip irrigation can be much more efficient than sprinkler irrigation since only the root zone of the cropped area is irrigated. However, improper irrigation management can lead to wasted water and leaching of soluble chemicals such as nitrate. In this project, several irrigation t...

ژورنال: علوم آب و خاک 2007
بهروز مصطفی‌زاده فرد, , سید فرهاد موسوی, , سمیرا اخوان, , علی قدمی فیروزآبادی, ,

To investigate yield and water use efficiency (WUE) of potato with tape and furrow irrigations, an experiment was performed at Hamadan Agricultural and Natural Resources Research Center (Ekbatan station) in 2004. The experiment was arranged in a split-plot experimental design based on completely randomized block with 3 replications of irrigation water amount as the main factor (75%, 100%, 125% ...

علیرضا سپاسخواه, , محمد مهدی قاسمی, ,

In this study, the effect of deficit irrigation with every–other furrow irrigation method, which is an innovated method in farm irrigation management, was examined on sorghum (Sorghum durra L.) in Bajgah and Kooshkak areas of Fars Province. The experimental design was split plot with three main plots of irrigation interval (10, 15 and 20 days), three subplots of irrigation methods (ordinary fur...

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