نتایج جستجو برای: perlit and soil

تعداد نتایج: 16864146  

2003

A and how the response of management affects them are considered. The information collected in a soil survey helps in the development of land-use plans and evaluates and predicts the effects of land use on the environment. Soil surveys were first authorized in the United States in 1896. Although extensive writings on husbandry by L.J.M. Columella were published in the first century A.D., practi...

Journal: : 2022

Peyzaj ve süs bitkiler yetiştiriciliği; dış mekân, iç mekân kesme çiçekçilik başlıkları altında incelenmektedir. İç bitkileri diğer iki sınıfın gerisinde kalmıştır. Bu araştırmada, bir bitkisi olan çelikle çoğaltılmasında takım sorunlar yaşanan Schefflera abicola (Hayata) Merr. bitkisinin çoğaltımında değişik yetiştirme ortamlarının büyümeyi düzenleyici hormonların etkisi araştırılmıştır. Çalış...

Journal: :مرتع و آبخیزداری 0
جواد معتمدی استادیار دانشکدة منابع طبیعی دانشگاه ارومیه آرزو علیزاده دانشجوی دکتری مرتع داری، دانشگاه علوم کشاورزی و منابع طبیعی ساری آزاده عالم زاده گرجی دانشجوی دکتری مرتع داری، دانشگاه علوم کشاورزی و منابع طبیعی گرگان

plants change their environment characteristics and especially soil properties while their growth and adaptation, to develop plant communities. in this study effect of halophyte patches from urmia lack in a vegetation type of salsola nitraria and aeluropus littoralis on chemical and physical properties of soil was investigated. so 4 vegitation patches along 2 transect with the length of 150 met...

Journal: :E3S web of conferences 2021

3D concrete printing is a perspective technology for sustainable construction and realization of sophisticated architectural projects. The current research proposes the thermal engineering calculation wall structure based on printed element total thickness 150 mm with internal air layer about 75 mm. mixture was designed addition perlite as filler in dosage 8 % by weight cement. process performe...

Journal: : 2021

Son yıllarda ucuzlayan bazı toprak nem sensörlerinin kullanımı Arduino mikroişlemci kontrol kartları sayesinde giderek artmaktadır. Buradan hareketle çalışma kapsamında, oldukça ekonomik olan 3 farklı sensörünün son sıklıkla kullanılan kartıyla nemini belirlemede kullanılabilirliği araştırılmıştır. Bu amaçla yapılan çalışmada 4 tipte sensör ele alınmıştır. sensörlerden biri sensörü (10HS, DECAG...

Journal: :علوم باغبانی ایران 0
مسعود موسوی رحیمی دانشجوی سابق کارشناسی ارشد پردیس کشاورزی و منابع طبیعی دانشگاه تهران مجتبی دلشاد دانشیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران عبدالمجید لیاقت استاد پردیس کشاورزی و منابع طبیعی دانشگاه تهران امیر رحمتیان دانشجوی سابق کارشناسی ارشد پردیس کشاورزی و منابع طبیعی دانشگاه تهران

soilless culture of greenhouse vegetables has been a fast developing section in iran during recent years. most growers fertigate plants without enough knowledge about plant water requirements. since some soilless substrates have low water retention capacity, wasting a great amount of nutrient solution can be occurred due to poor management. in this research work, effects of hydro gel amendment ...

Journal: :journal of rangeland science 2015
habib yazdanshenas mohammad jafari hossein azarnivand hossein arzani

plant life and food production for human closely depend on fertile and healthy soil. knowledge about qualitative properties of soil and its potential production can contribute us in the plantation, fertilization, utilization and land management. in addition, rangelands cover a very large portion of the earth's surface and play an important role in food security and other ecosystem services. the...

Journal: :desert 2013
m. mousaei sanjerehei m. jafari a. mataji n. baghestani meybodi m. r. bihamta

the purpose of this study was to evaluate the species-environment relationships in arid and semi-arid rangelandsof nodushan, yazd. the plant species cover and the environmental variables were measured at 9 sites. soil sampleswere taken for measurement of 12 attributes in 0-10 cm and 10-80 cm layers. vegetation was classified using twowayindicator species analysis (twinspan). data was analyzed u...

Journal: :محیط زیست طبیعی 0
علیرضا خداشناس مرکز تحقیقات کشاورزی و منابع طبیعی خراسان رضوی، ایران علیرضا کوچکی گروه زراعت، دانشکده کشاورزی، دانشگاه فردوسی مشهد، ایران پرویز رضوانی مقدم گروه زراعت، دانشکده کشاورزی، دانشگاه فردوسی مشهد، ایران امیر لکزیان گروه خاکشناسی، دانشکده کشاورزی، دانشگاه فردوسی مشهد، ایران

soil biodiversity is the origin of considerable goods for maintenance and extension of above ground biodiversity and environmental soundness. this study was carried out in shirvan, mashhad and gonabad, three regions of razavi and northern khorasan provinces, to determine soil characteristics and biodiversity in natural systems of arid and semi-arid regions. in each studied system, 10 locations ...

Journal: :iran agricultural research 2015
maryam khozaei ali akbar kamgar haghighi ali reza sepaskhah najaf ali karimian

the effect of 10-year continuous saffron cultivation on physical and chemical properties of a silty clay loam soil was investigated in a research farm of college of agriculture, shiraz university, shiraz (52 º 33ʹ e longitude and 29º 36ʹ n latitude), iran. this farm was irrigated with different regimes (100% of saffron's potential evapotranspiration (etp), 75%etp, 50%etp) including rain fed tre...

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