نتایج جستجو برای: irrigation network

تعداد نتایج: 713500  

2008
P. Javadi Kia A. Tabatabaee Far M. Omid R. Alimardani L. Naderloo

The idea of irrigation is not new, irrigation stems as far back as the Egyptians and probably further in unrecorded history. Even the idea of automated irrigation is not new, mankind has figured out how to irrigate large areas of foliage through the use of automated and drop irrigation systems. Efficient, automated irrigation systems, which can irrigate plants to a desired level and supply thos...

2007
Bing Zhang Shouqi Yuan JianSheng Zhang Hong Li

Many factors affecting irrigation model, including irrigation water volume, crop water requirement, production function of irrigation water, rainfall, soil water balance, water sensitive index in different stages of crop growth, the grain market price, irrigation water price, minimum yield, irrigation cost etc are considered. Then a multi-constraints and non-linear optimization irrigation model...

2011
Aadil Nabi Adrian H. Gallardo Shakeel Ahmed

Groundwater is one of the most valuable resources for drinking water and irrigation in the Maheshwaram Catchment, Central India, where most of the local population depends on it for agricultural activities. An increasing demand for irrigation and the growing concern about potential water contamination makes imperative the implementation of a systematic groundwater-quality monitoring program in ...

Journal: :IJISTA 2016
Ambarish G. Mohapatra Saroj Kumar Lenka

In this paper, a partial least square regression (PLSR) and fuzzylogic based smart decision support system (DSS) for crop-specific irrigation notification and control in precision agriculture is proposed, and this can be implemented in farm land, green-house and poly-house. The proposed DSS model continuously acquires real-time soil and environmental data using Zigbee wireless sensor network (W...

Journal: :مدیریت آب و آبیاری 0
بهنام آبابایی دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، باشگاه پژوهشگران جوان و نخبگان، تهران، ایران فرهاد میرازیی دانشیار، گروه مهندسی آبیاری و آبادانی، دانشکدة مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران، ایران تیمور سهرابی استاد، گروه مهندسی آبیاری و آبادانی، دانشکدة مهندسی و فناوری کشاورزی، پردیس کشاورزی و منابع طبیعی کرج، دانشگاه تهران، ایران هادی رمضانی اعتدالی استادیار گروه مهندسی آب، دانشگاه بین المللی امام خمینی قزوین، ایران

the first step in policy making is describing the objectives and choosing the policy instruments and management strategies and then, analyzing and assessing the impacts of them. in this study, farmers’ responses to selected policy instruments and management strategies were assessed using a semi-distributed planning model in qazvin irrigation and drainage network. the proposed model, simulates t...

Journal: :پژوهش آب در کشاورزی 0

water balance components are difficult to measure in short intervals because their measurement is time consuming and costly. therefore, soil-water--plant models can be used for prediction of these components. in this study, to predict grain yield and evaluate water use efficiency, an agro-hydrological model, namely, swap was used. this study covered a 10-years period from 2000-2010. based on th...

Journal: :آب و خاک 0
الهام کلبعلی محمود صبوحی صابونی محمود احمدپور

introduction: in the present study, dealing with water deficit challenges for gorgan river basin has been considered. golestan province's economy is dependent on agriculture but the occurrence of drought periods reduced the agricultural production and consequently the region's economy is in crisis. therefore, performing studies for programming and management of the water resources of the provin...

2016
M. S. Kahlon K. L. Khera

* Department of Soil Science, Punjab Agricultural University, Ludhiana 141 004 Abstract: Different irrigation methods and regimes affect maize (Zea Mays L.) growth differently. The field experiment was conducted to study the interactive effect of three irrigation methods and three irrigation regimes on maize growth under sandy loam soil at the Research Farm of Department of Soil Science, Punjab...

2018
Qingfeng Miao Haibin Shi José M. Gonçalves Luis S. Pereira

The sustainability of the Hetao Irrigation System, located in the water scarce upper Yellow River basin, is a priority considering the need for water saving, increased water productivity, and higher farmers’ incomes. The upgrading of basin irrigation, the main irrigation method, is essential and includes the adoption of precise land levelling, cut-off management, improved water distribution uni...

ژورنال: علوم آب و خاک 2004
صلاح کوچک زاده, , عبدالمجید لیاقت, , علی اصغرمنتظر, , محمدحسین امید, ,

The operation of an irrigation network is the result of a decision-making system in which three elements, i. e. the physical condition of the structures, control capacity, and hydraulic behavior of canal system, have important roles. The impact of these components is incorporated in the hydraulic sensitivity concept. For this purpose, the sensitivity of structures could be considered as the mos...

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