نتایج جستجو برای: water saving irrigationirrigation water salinityplanting method rapeseedsoil salinity

تعداد نتایج: 2152223  

Journal: :تحقیقات مهندسی کشاورزی 0
آرش محجوبی مدیر دفتر فنی و مهندسی شبکه های آبیاری و زهکشی سازمان آب و برق خوزستان عدنان صادقی لاری استادیار گروه مهندسی آب دانشکده کشاورزی و منابع طبیعی دانشگاه هرمزگان

sugarcane, which has high water requirements, is grown in khuzestan province (iran). climate and optimizing the use of water is very important to sustainable cultivation of sugarcane. studies of water requirements for sugar cane in khuzestan show that in parts of sugarcane agro-industry, the water applied is more than the actual water requirement of the plant. the present study was conducted to...

A.R. Sepaskhah, R. Talebnejad

Salinization of soil is primarily caused by capillary rise from saline shallow groundwater orapplication of saline irrigation water. In this investigation, the transient state analytical modelwas modified to predict water uptake from saline shallow groundwater, actual cropevapotranspiration, soil water content, dry matter, seed yield and soil salinity under differentsaline groundwater depths, i...

A.R. Sepaskhah, M. Noshadi S. Fahandej

In this research, the effects of irrigation with saline and fresh water through drip irrigation method and using two irrigation management strategies: M1, M2 (M1 is irrigation with fresh water in alternative with saline water, M2 is saline water in first half time of each irrigation event and fresh water in the second half), on the yield, water productivity (WP), soil salinity, plant height...

Journal: :The Journal of experimental biology 1994
Neufeld Cameron

Blue crabs (Callinectes sapidus Rathbun) acclimated to a salinity of 2 approximately doubled in wet mass (excluding carapace) during the period from 10 h before moult to 2 h after moult. Both in blue crabs acclimated to 2 salinity and in crabs acclimated to 28 salinity, the drinking rate increased from approximately 0.4 ml 100 g-1 h-1 at 1 day prior to moult to approximately 8 ml 100 g-1 h-1 du...

Journal: :پژوهش های زراعی ایران 0
حمیدرضا خزاعی احمد نظامی حمید رضا عشقی زاده شهرام ریاحی نیا کورش شجاعی

both poor germination and crop establishment due to water stress and salinity are among the most important limitations for production in semi-arid regions such as iran. to evaluate the response of four genotypes of triticale (et-82-15، et-82-8، et-79-17 and juanillo-92) to different water potentials caused by salinity and/or drought and recognizing the germination and seedling establishment, a ...

Journal: :Colloids and surfaces. B, Biointerfaces 2007
Hong-Bo Shao Chu Li-Ye Wu Gang Zhang Jin-Heng Lu Zhao-Hua

The First International Conference on the Theory and Practices in Bio-water-saving (ICTPB) was held from May 21 to 25, 2006 in Beijing, China. This indicated that the work related to this hot topic on the globe has been paid more attention to. Most progress in this field has been presented from near 300 participating people worldwide, who were meeting together to discuss about the theory and pr...

Journal: :journal of tethys 0

today, saving and storing water are among the most critical and important issues which have attracted the world's attention. history of storing water in the form of ghanat and water reservoir by iranians goes back to ancient times. studies on this field show that benefiting from underground dams was one of the methods employed for exploiting water in past times. in countries like iran, due...

Journal: :Evolution; international journal of organic evolution 2003
Ivan Gomez-Mestre Miguel Tejedo

Water salinity is an intense physiological stress for amphibians. However, some species, such as Bufo calamita, breed in both brackish and freshwater environments. Because selection under environmentally stressful conditions can promote local adaptation of populations, we examined the existence of geographic variation in water salinity tolerance among B. calamita populations from either fresh o...

Journal: :The Journal of the Acoustical Society of America 2016
Satish K Sinha Pawan Dewangan Kalachand Sain

Seismic oceanographic studies from various oceans worldwide have indicated that the acoustic reflections are mostly observed along thermal boundaries within the water column. However, the authors present a case study of seismic data from Krishna-Godavari Basin which shows that salinity variations also play an important role in the occurrence of water column reflections. The observed reflection ...

Journal: :شیلات 0
معظمه کردجزی کارشناسی ارشد شیلات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران محمد رضا ایمانپور دانشیار گروه شیلات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران بهاره شعبانپور دانشیار گروه شیلات، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران

this study was carried out within 7 months in dikjeh area, golestan province, iran. during that time the relationship between water salinity and ec with hematocrite, blood serum ionic parameters, growth, survival and stress indices in common carp (cyprinus carpio) were investigated. hematocrite as stress index was measured by hemocitometry standard method using microhematocrite reader. fish bio...

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