نتایج جستجو برای: cultivation temperature

تعداد نتایج: 483879  

Journal: :journal of agricultural science and technology 2010
f. shahbazi a. a. jafarzadeh f. sarmadian m. r. neyshabouri sh. oustan

regional impact studies of the future climate change effects are necessary because projected changes in meteorological variables differ from one region to another, and different climate systems can react in varied ways to the same changes. in this study, the effects of climate change on bioclimatic deficiency were compared in two cultivation methods (irrigated and rainfed) in a semi-arid region...

Journal: :پژوهش های جغرافیای طبیعی 0
رشید سعیدآبادی استادیار اقلیم شناسی، دانشگاه ارومیه محمدسعید نجفی دانشجوی دکتری اقلیم شناسی، دانشگاه تبریز شعیب آب خرابات دانشجوی دکتری اقلیم شناسی، دانشگاه تبریز

introduction today, with the increasing population and the need for strategic and industrial crops the farmers are simulated to grow these kinds of crops. thus, this subject has now been caused the inappropriate use of land and natural resources. on the other hand, the natural environment resources have limited the ability to use its resources and the climate change intensifies this limit abili...

2002
S. K. Chatterjee

India (8-30 N and 68-97.5 E) exhibits a wide range in topography and climate, which has a bearing on its vegetation and floristic composition. This subcontinent is one of the World’s 12 leading Biodiversity Centres, encompassing 16 different agro-climatic zones, 10 vegetation zones, 25 biotic provinces and about 426 habitats of specific species. It has been estimated that about 45,000 plant spe...

Journal: :تولید گیاهان زراعی 0
احمد نظامی هیات علمی حمیدرضا خزاعی هیات علمی فرزین پورامیر فارغ التحصیل امیر حسین سعیدنژاد هیات علمی حمید رضا مهرآبادی هیات علمی

in general, spring cultivation of sugar beet is prevalent, but nowadays because of water sources limitation and also plants low water use efficiency in this time of cultivation, autumn cultivation is growing up. several assessments also have showed that in compare with spring cultivation, autumn cultivation of sugar beet has other benefits including reducing the likelihood of plant disease and ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 0

a semi-empirical mathematical model for predicting physical part of ignition delay period in the combustion of direct - injection diesel engines with swirl is developed . this model based on a single droplet evaporation model . the governing equations , namely , equations of droplet motion , heat and mass transfer were solved simultaneously using a rung-kutta step by step unmerical method . the...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده علوم 1391

abstract in the present research solution of chalcopyrite in sulfuric acid in hydrometallurgy method using electrochemistry with cyclic voltammetry technique has been investigated. the value of maximum reduction peak current of copper ions represents the measure of solubility. in this research different parameters temperature, potential, potential exert time, chalcopyrite concentration, sulfur...

Journal: :بوم شناسی کشاورزی 0
مهدیه رشید سرخ آبادی عباس خاشعی سیوکی علی شهیدی

between of effective factors in agricultural crops production, climatic conditions is an important task from the view of environmental variables. on the other hand the basic in agricultural development is having detailed knowledge of the environmental characteristics in any place and applying specific management. saffron as the world's most valuable agricultural and medicinal product is among t...

2012
Kamilya Tazhibayeva Robert Townsend

We specify a three-stage production function for rice cultivation which incorporates the sequential nature of both production shocks, including weather, and input choices based on sequentially updated information sets of history of realized shocks and observed changes in crop growth. The production function is CES across stages, thus taking into account substantial complementarities between dif...

2012
Heikki Laurila Pirjo Mäkelä Jouko Kleemola Jari Peltonen

In this study Mixed structural covariance, Path and Cultivation Value analyses and the CERES-Wheat crop model were used to evaluate vegetation and yield component variation affecting yield potential between different highlatitude (> 60° N lat.) and mid-European (< 60° N lat.) spring wheat (Triticum aestivum L.) genotypes currently cultivated in southern Finland. Path modeling results from this ...

In order to investigate the effect of planting date and sowing method on ear yield, water use efficiency and some physiological characteristics of sweet corn, an experiment was carried out as a split plot based on a randomized complete block design with three replications in Yasouj, south-west of Iran. Planting date consisted of five levels (4 May, 19 May, 4 June, 19 June, 5 July) and considere...

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