نتایج جستجو برای: first irrigation

تعداد نتایج: 1478745  

2018
Di Zhang Ruiqi Li William D Batchelor Hui Ju Yanming Li

The North China Plain is one of the most important grain production regions in China, but is facing serious water shortages. To achieve a balance between water use and the need for food self-sufficiency, new water efficient irrigation strategies need to be developed that balance water use with farmer net return. The Crop Environment Resource Synthesis Wheat (CERES-Wheat model) was calibrated an...

Journal: :چغندرقند 0
حسین محمدی مزرعه مربیان پژوهشی بخش تحقیقات فنی و مهندسی مرکز تحقیقات کشاورزی و منابع طبیعی آذربایجانغربی

in order to evaluate the effects of sub soiling and irrigation level treatments on yield of sugar beet and wheat in rotation, an experiment was conducted at agricultural research station ofwest azerbaijanprovince. the plots were arranged as a strip plot experiment in randomized complete block design with three replications. horizontal plot (sub soiling treatment) consisted of sub soiling depth ...

Journal: :علوم گیاهان زراعی ایران 0
جعفر نباتی پرویز رضوانی مقدم

crop production in arid and semi arid environments has been affected by drought stress. forage production have important role on animal production in this area. in order to determine the effect of irrigation intervals on the yield and morphological characteristics of forage millet, sorghum and corn, an experiment was conducted in a split plot with a randomized complete block design with four re...

Journal: :آب و خاک 0
سید حسین صدرقاین جواد باغانی سید ابوالقاسم حقایقی مقدم مهدی اکبری

abstract this study was conducted to determine the best drip irrigation method for pepper cultivation with the objective of water saving and obtaining maximum yield. the study was done during two years. experimental design was randomized complete blocks design (rcbd) in split plot with four replications. three different drip irrigation methods; drip irrigation with in-line emitter tubes, drip i...

Journal: :پژوهش های حبوبات ایران 0
جعفر زارع زارگز محمد گلوی

water scarcity is a major factor for limiting crop growth and development in arid and semi-arid regions. in order to study the effects of varying timing and severity of water deficit on mung bean phenological traits, a field experiment was carried out during 2009 growing season at agricultural research institute of zabol university. the experiment was laid out in split plot by using a randomize...

Journal: :JCP 2011
Xiuqing Wang Guodong You Shifeng Yang

Precision irrigation in fuzzy control system based on crop water stress acoustic monitoring was designed in the paper. Moreover, conventional double fuzzy control model was found to carry out two work mode, normal irrigation and precision irrigation, which aims to both ensure normal growth of crops and achieve effective water-saving. Since five input signals affect output in different degree, t...

2014
Zhou Beibei Wang Quanjiu Tan Shuai

A theory based on Manning roughness equation, Philip equation and water balance equation was developed which only employed the advance distance in the calculation of the infiltration parameters and irrigation coefficients in both the border irrigation and the surge irrigation. The improved procedure was validated with both the border irrigation and surge irrigation experiments. The main results...

2008
Reimar Carlesso Mirta Teresinha Petry Celio Trois

Despite of the water use increment for other sectors than agriculture, the water use for irrigation is the main water consumer in global scale. However, irrigation has been pressured by the civil society to improve water use efficiency in agriculture, to prevent water scarcity for human population that grows continuously, mainly in developing areas of the planet. On the other hand, the irrigati...

Journal: :International braz j urol : official journal of the Brazilian Society of Urology 2014
Onder Canguven Raidh A Talib

PURPOSE Ischemic priapism, which is a compartment syndrome, needs urgent treatment in order to nourish corpora cavernosa. As the first step, the aspiration of blood and/or the irrigation of the cavernosal bodies are performed to prevent fibrotic activity and secure erectile capability. While performing aspiration and irrigation, there are some risks of the procedure in which most refrained one ...

2013
Robert I. McDonald Evan H. Girvetz

Agricultural irrigation practices will likely be affected by climate change. In this paper, we use a statistical model relating observed water use by U.S. producers to the moisture deficit, and then use this statistical model to project climate changes impact on both the fraction of agricultural land irrigated and the irrigation rate (m³ ha⁻¹). Data on water withdrawals for US states (1985-2005...

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