نتایج جستجو برای: 15cm depth. the soil physico
تعداد نتایج: 16122947 فیلتر نتایج به سال:
The Present Study was undertaken to assess Depth Wise Studies of Physico-Chemical Properties Soil under Different Land Use System main campus university at Acharya Narendra Deva University Agriculture and Technology, Kumarganj, Ayodhya (U.P.) during 2018-2019.
 samples were collected RWCS (Rice-Wheat cropping system), LBCS (Legume based VBCS (Vegetable System).The land use systems selected...
the fire as one of the ecological factor has positive or negative effects on ecosystems components. therefore, this study was evaluated the effect of fire on some soil physico-chemical properties in winter rangelands of behshahr. so that two burned sites were selected in rangelands and changed rangelands to wheat and barley with two control areas (unburned) in each of them. the soil sampling wa...
According to importance of forests, enforcement of accurate and systematic management about them is necessary; in this regard recognition of soil quality is essential principles. With the aim of studying soil macroelement in each of Populus deltoiedes, Alnus subcordata, Taxodiom distichum stands and around uncultivated area (control), 8 samples taken from each of 0-15cm and 15-30cm depth. Soil ...
Soil tillage management for various crops in different regions needs use available indices and information about condition, manual manner, defects and preferences of various tillage methods. Therefore, this experiment was conducted in summer 2003 on clay soil containing wheat residual in Shawoor agricultural research center, situated in northern Ahwaz. Experiment was conducted as a Randomized C...
Soil tillage management for various crops in different regions needs use available indices and information about condition, manual manner, defects and preferences of various tillage methods. Therefore, this experiment was conducted in summer 2003 on clay soil containing wheat residual in Shawoor agricultural research center, situated in northern Ahwaz. Experiment was conducted as a Randomized C...
today, scouring is one of the important topics in the river and coastal engineering so that the most destruction in the bridges is occurred due to this phenomenon. whereas the bridges are assumed as the most important connecting structures in the communications roads in the country and their importance is doubled while floodwater, thus exact design and maintenance thereof is very crucial. f...
in this study, scour of mashkid bridge pier located in mashkid river of saravan county has been studied and to measure the scour rate, the numerical model hec-ras 4.0 has been used. upon selection of mashkid river as the case study and whereas the studied zone is important with respect to the climatic conditions and showery monsoon raining and flowing the great and destructive floodwaters, ther...
درک الگوی توزیع مکانی ماکروفون خاک بدلیل اثرات آن روی فرآیندهای اکوسیستم بسیار مهم است. لیکن اطلاعات کمی در این خصوص وجود دارد. درمورد تنوع زیستی ارگانیسم ها وجانداران خاکزی که ازاجزای مهم وکلیدی درهرسیستم اکولوژیکی هستند و در بهبود حاصلخیزی خاک و تولیدات زمین وپایداری اکوسیستم ها(ازطریق فرآیندهای بیولوژیک)نقش عمده دارند تحقیقات کمی انجام شده است. این تحقیق جهت بررسی الگوی مکانی پارامترهای تنوع...
in order to study the effects of climate and geomorphology on the development of soils and their physico-chemical peroperties, two transects on the loess parent material were selected in two regions of golestanprovince. the regions were: huttan (maraveh tappeh area) and gorgan with aridic-thermic and xeric-thermic soil moisture and temperature regimes, respectively. four pedons in hutan and fiv...
apart from other aspects, desert is a natural environment and is one of the appealing terrestrial elements. putting its symbolic and fictional senses aside, the term “desert” bears mystic sense more than material sense. in addition to the worlds materialistic experiences, desert has attracted the attention of writers because it creates a kind of inner experience, which returns the individual in...
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