نتایج جستجو برای: rain fed

تعداد نتایج: 101824  

Journal: :Research on World Agricultural Economy 2022

Climate change has severely impacted the rain-fed agricultural production system which is dominant in Nepal. This situation demands implementable strategies like supplemental irrigation for mitigating adverse impacts. In spite of importance irrigation, it not adopted on a wider scale. Hence, this paper aims to assess perceptions climate and identify factors that influence adoption practices. im...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده کشاورزی 1390

بر اساس این اهداف تعداد 5 ترانسکت انتخاب شد که 4 تا از آنها منتهی به دشت تبریز بوده و یک ترانسکت در داخل آن می باشد. در همه ترانسکت ها مجموعاً تعداد 32 پروفیل انتخاب و پس از حفر و تشریح، نمونه برداری از کلیه افقهای پروفیل ها انجام و جهت مطالعات مورفولوژیکی, فیزیکوشیمیایی و کانی شناسی رس آماده شدند. نتایج نشان داد که مواد تشکیل دهنده خاکهای دشت تبریز, از مواد حاصل از فرسایش ارتفاعات اطراف دشت,...

A. Mostafaie A. Najaphy K. Moradpour, S. Mansoorifar

Drought is one of the most important factors limiting crop yields around the world. Drought stress in plants, the change (increase or decrease) in the production of plant proteins. This research was carried out using bread wheat genotypes. For evaluation of leaf protein pattern in wheat, 10 genotypes were assayed with 3 replications under irrigated (non-stress) and rain-fed (stress) conditions....

2006
Rajaa Hassan Mustafa Mau Markus Friedrich Kuhlmann

The rain-fed mechanized agricultural sub-sector of the Sudan has high potential of building a national food stock and foreign exchange earnings, which could contribute substantially to agricultural development and hence the development of the whole economy as well. However, the agricultural production in this sub-sector is generally characterized by a high degree of instability, which arises fr...

Journal: :CoRR 2016
Chang-Hwan Son Xiao-Ping Zhang

— This paper introduces a new rain removal model based on the shrinkage of the sparse codes for a single image. Recently, dictionary learning and sparse coding have been widely used for image restoration problems. These methods can also be applied to the rain removal by learning two types of rain and non-rain dictionaries and forcing the sparse codes of the rain dictionary to be zero vectors. H...

Journal: :پژوهش های جغرافیای طبیعی 0
حمید زارع ابیانه وحید یزدانی خلیل اژدری

quantitative measurement of meteorological drought, z score(z), rainfall anomaly (rai), standard precipitation (spi) indices and percent of normal precipitation (pnpi) based upon seasonal and annual rainfall data of the 15 meteorological stations of meteorological in hamedan province were used. also, in studying influences of drought on agriculture relative yield index of wheat was used. the re...

1996
James S. Diana

Semi-intensive production of Nile tilapia Oreochromis niloticus commonly utilizes organic and inorganic fertilizers to increase primary production and fish yield. Most experiments on such systems are done at fish culture stations where water supplies are readily available, and water loss through evaporation or by seepage is replaced regularly, often weekly. Rainfall during such experiments may ...

2011
Matthew E. Gilbert Michele Holbrook N. Michele Holbrook

Diversification of agricultural systems is a standard suggestion for increasing the resilience of rain-fed subsistence farming to drought. However, grain crops share many physiological characteristics, potentially forming a plant functional type (PFT), a term ecologists apply to groups of species that respond in functionally similar ways to environmental variation. Here we test whether grain cr...

Recently, the quality and safety of organic products is the topic of prime concern. While this demand increases since consumer considers organic products are healthier and harmless than conventional products. In the country like India, organic agricultural is not novel and are effectively performs in varied climates such as tribal mountains, mountainous areas and rain-fed zones of the country. ...

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