نتایج جستجو برای: Pressurized irrigation systems

تعداد نتایج: 1225958  

Journal: Desert 2018

In this study was examined the factors affecting the unwillingness to adopt pressurized irrigation methods among farmers' groups (with different levels of drought) in Ardabil province (Iran). Mixed method (Qualitative – Quantitative paradigm) was used for doing this research. First, by drought zoning of Ardabil province (by SPI method and GIS), three regions included the mild, moderate and seve...

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

abstract the main purpose of this study was to determine farmers’ satisfaction towards pressurized irrigation systems in kermanshah province. this study used a mixed method design with descriptive correlation emphasis. a researcher made questionnaire was used to collect data. a random sample of 274 farmers who have been equipped with pressurized irrigation systems during the last three years pa...

Journal: :سنجش از دور و gis ایران 0
سیدجواد ساداتی نژاد دانشگاه تهران محمدرضا شکاری دانشگاه کاشان

the importance of groundwater as a source of water supply in arid, semi –arid areas in recent years due to the uncontrolled exploitation of groundwater have been doubled. uncontrolled exploitation has been caused a drop in the water table in many areas of the country, including this region. with replace methods of modern irrigation instead of traditional irrigation methods can prevent drop the ...

Journal: :تحقیقات اقتصاد و توسعه کشاورزی ایران 0
محمد آقاپور عضو هیئت علمی دانشگاه آزاد اسلامی شوشتر سعید یزدانی استاد گروه اقتصاد کشاورزی دانشگاه تهران حامد رفیعی استادیار گروه اقتصاد کشاورزی دانشگاه

rejection of pressurized irrigation by farmers is the problem in the agricultural sector in the north of the khouzestan province. as the statistics show, only five percent of the farmers used to do this type of irrigation systems. therefore, in this study by using field study and logit model, causes of rejecting pressurized irrigation methods in three townships shosh. andymeshk and dezful have ...

Journal: :اکو هیدرولوژی 0
مریم محمدپور دانشجوی دکتری مهندسی منابع آب، گروه مهندسی آب، دانشکدۀ کشاورزی، دانشگاه ارومیه کامران زینال زاده استادیار گروه مهندسی آب، پژوهشکدۀ مطالعات دریاچۀ ارومیه، دانشگاه ارومیه وحید رضاوردی نژاد استادیارگروه مهندسی آب، دانشکدۀ کشاورزی، دانشگاه ارومیه بهزاد حصاری استادیار گروه مهندسی آب، پژوهشکدۀ مطالعات دریاچۀ ارومیه، دانشگاه ارومیه

in this study, application ofweap model (soil moisture method) have been investigated for simulating hydrological behavior in ahar-chai basin. according to the development of pressurized irrigation systems in this basin, since 2005, two models were carried out for two periods, pre-pressurized period (1998-2006) and pressurized period (2006-2013). irrigation method in first model was surface irr...

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: :اقتصاد و توسعه کشاورزی 0
رضا وحدت ادب حمید بلالی

introduction: nowadays, efficient use of scarce water resources is one of the government’s importantgoals for dealing sustainable development in the agricultural sector. in addition to optimal exploitation and using of surface and groundwater resources, choosing of efficient types of irrigation technologies is a very important factor in sustainable water resource management. this study tries to...

Journal: :آب و خاک 0
ناصر صداقتی سید جواد حسینی فرد اکبر محمدی محمدآبادی

unsustainable harvesting of agricultural water resources in the province of kerman, has caused an annual average of one-meter drop in ground water levels. surface irrigation methods in pistachio trees have low efficiency because of inherent characteristics and its incorrect application, as well as low access to water resource in pistachio regions. therefore under the current critical condition,...

Journal: :journal of agricultural science and technology 2015
a. rahman

pressurized irrigation technologies of course have the potential to raise the productivity of land and water; but, these technologies could not popularize among the smallholders who own millions of farms worldwide. in developing pressurized irrigation technologies, particularly for field crops irrigation, researchers and manufacturers have developed more specialized and expensive technologies w...

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