نتایج جستجو برای: including linear move sprinkler irrigation systems in maize

تعداد نتایج: 17277074  

Journal: :مدیریت آب و آبیاری 0
عبدالصمد کاغذلو دانشجوی کارشناسی ارشد گروه مهندسی آبیاری و زهکشی، دانشگاه بین المللی امام خمینی(ره)، قزوین عباس ستوده نیا دانشیار دانشگاه بین المللی امام خمینی(ره)، قزوین پیمان دانش کار آراسته دانشیار دانشگاه بین المللی امام خمینی(ره)، قزوین

evaluating the performance of irrigation systems by providing the possibility of increasing irrigation efficiency in those systems is an important factor in the field of water resources management. in this study, the performance of three systems were evaluated, including linear move sprinkler irrigation systems in maize, sugar beet and alfalfa fields of magsal agro-industrial company which is l...

ژورنال: علوم آب و خاک 2007
محمد بخشوده, , منصور زیبایی, , هادی رفیعی دارانی, ,

The main objective of this study was determining the best sprinkler system and ranking total operational sprinkler systems in Isfahan province. The data was collected through 262 questionnaires completed by farmers in Feridan and Semirom cities in Isfahan province. Ranking and comparing the systems were done via criteria matrix and qualitative efficiency of objects and compromise programming. B...

محمد بخشوده, , منصور زیبایی, , هادی رفیعی دارانی, ,

The main objective of this study was determining the best sprinkler system and ranking total operational sprinkler systems in Isfahan province. The data was collected through 262 questionnaires completed by farmers in Feridan and Semirom cities in Isfahan province. Ranking and comparing the systems were done via criteria matrix and qualitative efficiency of objects and compromise programming. B...

Journal: :آب و خاک 0
کوروش مجد سلیمی سید بابک صلواتیان ابراهیم امیری

introduction: designing and management of sprinkler irrigation systems depend on the situation and location of its implementation and often rely on professional and long-term tests (9). having a good irrigation system depends on knowledge of the relationship between soil, water, plants, irrigation scheduling, the required amount of irrigation water to the water-holding capacity of soil, climate...

ژورنال: علوم آب و خاک 2015
قیصری, مهدی, لندی, اسماعیل, مجیدی, محمد مهدی, مصطفی‌زاده فرد, بهروز, مولائی, بهناز,

Because of limiting water resources and increasing demand for food, it is necessary to investigate the effect of irrigation systems on water productivity. This research was conducted to evaluate yield and yield characteristics of two potato varieties under sprinkler and trickle irrigation systems. The treatments were two irrigation systems (sprinkler and trickle irrigation) and two potato varie...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم پایه دامغان 1389

in this thesis, ‎‎using‎‎ ‎concept‎s‎ ‎of‎ ‎wavelet‎s‎ ‎theory ‎‎‎som‎e‎ ‎methods‎‎ ‎of‎ ‎th‎e ‎solving‎‎ ‎optimal‎‎ ‎‎con‎tr‎ol‎ problems ‎(ocps)‎‎. ‎g‎overned by time-delay systems is investigated. ‎th‎is‎ thesis contains ‎tw‎o parts. ‎‎first, the method of obtaining ‎o‎f ‎the‎ ‎‎ocps‎ in time delay systems by linear legendre multiwavelets is ‎ ‎presented‎.‎‎‎‎ the main advantage of the meth...

Journal: :مدیریت آب و آبیاری 0
سونیا زبردست دانش آموخته کارشناسی ارشد، گروه مهندسی آبیاری و زهکشی، پردیس ابوریحان، دانشگاه تهران علی رحیمی خوب دانشیار گروه مهندسی آبیاری و زهکشی، پردیس ابوریحان، دانشگاه تهران

according to the irrigation systems design standards, allowed pressure variation in lateral pipes is 20 percent. reasons for this rate selection, which since the 60's is performed, are not known. the increased changes in allowed pressure tubes to lateral pipes design, the increased sprinkling system required pressure and the increased nonuniform sprinkler distribution, so energy supply cos...

Journal: :آب و خاک 0
امیر اعظمی کیومرث زرافشانی حسین دهقانی سانیج علی گرجی

abstract one of the technologies that deal with efficient use of water is sprinkler irrigation systems. if farmers are to continue the use of sprinkler systems which may be crucial in agricultural development, educational programs should be tailored to their needs. therefore, the main purpose of this study was to analyze educational needs of farmers equipped with sprinkler irrigation. furthermo...

Abiose M. Oguntuase Ayorinde A. Olufayo Johnson T. Fasinmirin, Philip G. Oguntunde,

Amaranthus cruentus, an annual vegetable crop, is known to be highly productive under rain-fed conditions and during the dry season when supplied with water. However, for good water management, there is need to accurately quantify the water consumed by the crop. This paper investigates the water use and biomass yield of differentially irrigated Amaranthus cruentus at different developmental sta...

Journal: :پژوهش آب در کشاورزی 0
مهدی صدیق کیا پژوهشگر مرکز تحقیقات و توسعه، سازمان اتکا (دانشجوی دکتری تخصصی سازه های آبی). محمد باقر ناطقی مدیریت منابع آب هلدینگ مزارع نوین ایرانیان، سازمان اتکا. شهرزاد کاویانی کوثرخیزی کارشناس ارشد سازه های آبی، دانشگاه تهران. نجمه نقی پور کارشناس ارشد سازه های آبی، دانشگاه تربیت مدرس.

for the proper use of water resources in agriculture, it is necessary to provide appropriate irrigation system to supply crop water requirement. in the present research, using a hierarchical analysis, different types of irrigation systems were evaluated and prioritized on 1150 hectares of agricultural land of etka organization ​​ located in dorud, iran. hierarchical analysis process is one of t...

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