نتایج جستجو برای: salinity indices

تعداد نتایج: 106829  

Journal: :journal of agricultural science and technology 2011
t. enayat gholampoor m. r. imanpoor b. shabanpoor s. a. hosseini

this study was carried out to investigate the effects of salinity levels (0, 2, 4, 7 and 10 ppt) on growth indices, blood biochemical parameters, and body composition in rutilus frisii kutum fingerlings (initial weight 1.330.02 g) during 60 days. results indicated that the highest rates of daily growth, specific growth and weight gain per fish were obtained at the levels of 4 and 2 ppt (p0.05)...

Introduction: The spatial and temporal distribution of salts in the soil, the great extent of the Iranian deserts, and the adverse climatic conditions prevailing over them make it difficult to accurately determine the parameters and field measurements in some cases. In the last two decades, the use of field techniques and their combination with remote sensing data has contributed significantly ...

Journal: :مرتع و آبخیزداری 0
طیبه مصباح زاده استادیار گروه احیای مناطق خشک و کوهستانی، دانشکدة منابع طبیعی، دانشگاه تهران حسن احمدی هیات علمی فریدون سرمدیان هیات علمی محمد جعفری هیات علمی حسین آذرنیوند هیات علمی محمد زارع چاهوکی هیات علمی مریم رستمی

this research was done in order to submit a model for salinity map made with tm satellite data and salinity values in a buienzahra. the necessary processings such as principal component analysis and producing of different indices was done on the main bands. the 38 soil samples using random sampling (with 10×10 km dimension) from different horizons were designed and performed on the study area. ...

In order to investigate the effects of priming methods on the improvement of seed germination indices and seedling growth of Lallemantia (Lallemantia Iberica) under different salinity levels, two factorial experiment in a randomized complete block design were carried out in the seed technology laboratory of Agricultural Sciences and Natural Resources University of Khuzestan in 2018-2019. In the...

Maharloo Lake is one of the salty lakes located in the southeast of Fars province, Iran. Presence of salt domes has a significant role in its salinity. Magnesium-sodium chloride and sodium sulfate are dominant salts of the lake. Due to the drying up of lake, widespread lands surrounding the area are exposed to secondary salinity. It seems necessary to investigate the changes to find salinity le...

Journal: :بوم شناسی کشاورزی 0
حمیدرضا فلاحی پرویز رضوانی مقدم محمدبهزاد امیری مهسا اقحوانی شجری رستم یزدانی بیوکی

salinity is one of the important factors that reduce the growth and yield of crops in iran; however, determining appropriate methods for reducing its negative effects is important. in order to study the effects of nutritional condition of mother plant and bacterial biofertilizers seed priming on germination indices of wheat (triticum aestivum l.), in salinity condition, an experiment was conduc...

2016
Hui Yang Jinxiang Hu Xiaohua Long Zhaopu Liu Zed Rengel

The interaction between roots and bacterial communities in halophytic species is poorly understood. Here, we used Jerusalem artichoke cultivar Nanyu 1 (NY-1) to characterise root distribution patterns and determine diversity and abundance of bacteria in the rhizosphere soil under variable salinity. Root growth was not inhibited within the salinity range 1.2 to 1.9 g salt/kg, but roots were main...

2012
Ahmad Bybordi

Salinity is a phenomenon challenging the plantation and growth of grape in arid and semiarid regions. During the present research, tolerance of two grape cultivars (Soltanin and Fakhri) was evaluated against various sodium chloride salinity levels (zero, 50, 100, 150, 200 and 250 mM), which was conducted based on factorial experiment in the form of Randomized Complete Design (RCD) with three re...

Journal: :علوم گیاهان زراعی ایران 0
آرمان آذری دانشجوی دوره دکتری دانشگاه تربیت مدرس تهران سیدعلی محمد مدرس ثانوی استاد دانشگاه تربیت مدرس تهران امین آناقلی مربی پژوهشی مرکز ملی تحقیقات شوری یزد، سیدعلی محمد چراغی استادیار پژوهشی مرکز ملی تحقیقات شوری یزد، محمود غلامی مربی پژوهشی مرکز ملی تحقیقات شوری یزد، حسین عسکری استادیار دانشکده مهندسی فناوری¬های نوین دانشگاه شهید بهشتی بهرام علیزاده

a two years (2006–2007 and 2007-2008) experiment was conducted at national salinity research center, yazd, to evaluate salt-tolerant genotypes of brassica napus, b. rapa and b. juncea. to screen genotypes in the first growing season, 58 genotypes were grown under two irrigation water salinity levels of 2 and 12 ds m-1 in an augmented randomized complete block design with six replicated checks. ...

Journal: :به زراعی کشاورزی 0
معصومه پوراسماعیل استادیار، بخش تحقیقات ژنتیک و بانک ژن گیاهی ملی ایران، مؤسسة تحقیقات اصلاح و تهیة نهال و بذر، کرج، ایران جلال رستگار استادیار، بخش تحقیقات اصلاح و تهیة نهال و بذر، مرکز تحقیقات کشاورزی و منابع طبیعی خراسان رضوی، نیشابور، ایران مهدی زنگی آبادی کارشناس، تحقیقات خاک و آب، مرکز تحقیقات کشاورزی و منابع طبیعی خراسان رضوی، مشهد، ایران

in this study, salinity tolerance of 51 kabuli chickpea genotypes was investigated at vegetative growth phase using 4.5 and 6.5 ds/m salt solution (by adding nacl to 1/2 hoagland solution) and 1/2 hoagland solution (ec= 1.7 ds/m) as control treatment. a split plot design was used in this experiment where the main plot was salinity treatments and the sub plot was genotypes. treatments continued ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید