نتایج جستجو برای: keywordson farm water management

تعداد نتایج: 1393936  

Journal: :تحقیقات مهندسی کشاورزی 0
مهدی اکبری استادیار موسسه تحقیقات فنی و مهندسی کشاورزی

the greatest limitations to agricultural development and production in iran are scarcity of water resources, ineffective irrigation scheduling and wasteful water usage. avenues discussed for optimum water use include improving water productivity by improving irrigation scheduling, farm water management and water profitability. the present study evaluated current water use and ways to improve wi...

2004
LR Malcolm

Prologue Introduction Economics as the core discipline of Farm Management Modelling farm systems for decision making Risk and Farm Management decision Real case studies Environmental concerns Farm Management education

M. Mehdi Bateni T. Honar Z. Rabie1

ABSTRACT- Inadequate water supply is the major problem for agriculture in arid and semi-arid regions. Thus, effective management should be considered for water resources planning. In this research, a model was provided which is able to estimate optimal land and water allocation in the Doroodzan irrigation network. Optimal water management model was used at farm level to evaluate different defic...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2010
G Carr S Nortcliff R B Potter

Reclaimed water provides an important contribution to the water balance in water-scarce Jordan, but the quality of this water presents both benefits and challenges. Careful management of reclaimed water is required to maximize the nutrient benefits while minimizing the salinity risks. This work uses a multi-disciplinary research approach to show that soil response to irrigation with reclaimed w...

2018

Management Act (SGMA) in California obligates increased levels of management in highand medium-priority groundwater basins in the near future in order to achieve long-term sustainable groundwater conditions (DWR 2014). An immediate challenge for effective management in many agricultural areas reliant upon groundwater is that little or no information currently exists on the amount of water extra...

Journal: :Nature 1940

2001
Jon F. Bartholic Yung-Tsung Kang Nancy Phillips Chansheng He

There are many reasons to develop a non-point source pollution prioritization system to determine which watersheds require the most attention. Once priority problem watersheds have been determined, an approach for directing specific actions is needed, i.e. targeting the specific areas of greatest potential erosion which can contribute to water quality degradation. Once targeted areas are identi...

2008
Xindan Qi Hua Li Wenqing Yin

The farm machinery statistics is an important task of the farm machinery management, the statistics of farm machinery in Jiangsu Province are very wide. Improving the working of statistical analyses by advanced computer technology, enhancing the efficiency, is a topic which the farm machinery superintendent and the scientific and technical worker explore continuously. The present situation of t...

2009
Xiaohua Wang Shudong Wang Zhenyu Cai Jianli Ding

Excessive water is used by farm field in Tarim river basin, it is very important to deep study on the relation between area of farm field and natural vegetation in recent 50 years. Collecting and processing various decades of remote sensing data, and got area of farm field, grass, forest, town and non-serviceable field. These results indict that: Because of the high flow period between 1950 and...

2013
Cathal Buckley

This paper employs Q methodology to investigate farmer opinions of the operation of the EU Nitrates Directive regulations after the first 4 year National Action Programme phase and explores the level of acceptance and refutation of measures from the view of farmers own knowledge and experience of land stewardship. Results indicate 4 main opinion groups. A “Constrained Productionists”group remai...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید