نتایج جستجو برای: irrigation systems

تعداد نتایج: 1221594  

Ashraf Alizadeh Amraie, Hamdollah Eskandari,

A field experiment was conducted to evaluate the effect of planting pattern and irrigation system on antioxidant activity of wheat and Persian clover. The experiment was carried out as a two-factor factorial with three replications. The first factor was irrigation system (conventional and partial root-zone irrigation) and the second was planting pattern (sole wheat, sole Persian clover, alterna...

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: :تحقیقات مهندسی کشاورزی 0
منصور معیری عضو هیئت علمی بخش تحقیقات فنی و مهندسی کشاورزی مرکز تحقیقات کشاورزی صفی آباد فریدون کاوه عضو هیئت علمی دانشگاه آزاد اسلامی واحد علوم تحقیقات تهران.

this study was conducted to evaluate the current management of furrow and border irrigation systems in the dez irrigation network. of the eight farms studied, three grew wheat and one each grew corn, sugar beets, lettuce, sesame and mung beans. the study found water application efficiency in the five farms with furrow irrigation systems to be 25.8% and for the three farms with border irrigation...

2009
R. J. Smith J. N. Baillie

Although the term precision irrigation is now quite widely used, often to mean drip irrigation, there is no commonly accepted definition or conceptualisation of the term, and no cohesive framework to guide research, development or adoption. This paper is reporting on a review of precision irrigation funded by NPSI. This review is considering the role of current irrigation application technologi...

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...

Journal: Desert 2007
M. Dastorani, M. Heshmati M. Sadeghzadeh

This research was designed to evaluate and compare the applicability of two different types of irrigation including traditionally (surface irrigation) and simple sub-surface drip irrigation (using pricked-pipe covered with plastic cloth). Two plots containing 39 pistachio trees with 720 m2 area were selected in Rafsanjan, Iran. Both plots were irrigated using exactly the same quantity and quali...

تقوایی, مسعود , سالاروند, اسماعیل ,

Development of new irrigation technologies is one of the most important solutions for agricultural development and increasing production which is discussed as an important issue of country due to serious constraint on water resources. Thus the main objective of this research is to study the development constraints of pressurize irrigation systems in Rural regions which are induced as a case stu...

2015
John Dalrymple Barry O'Mahony Elizabeth Levin Steven Greenland

The availability of water is a global issue which is predicted to become more pronounced in the future. As a large and relatively dry continent Australia is presented with a series of challenges within the agriculture sector. As a result, the adoption of appropriate, efficient and effective irrigation systems is an important element for future sustainability. In various Australian growing regio...

Journal: :Annual Reviews in Control 2005
Iven M. Y. Mareels Erik Weyer Su Ki Ooi Michael Cantoni Yuping Li Girish N. Nair

In Australia gravity fed irrigation systems are critical infrastructure essential to agricultural production and export. By supplementing these large scale civil engineering systems with an appropriate information infrastructure, sensors, actuators and a communication network it is feasible to use systems engineering ideas to improve the exploitation of the irrigation system. This paper reports...

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