نتایج جستجو برای: n r g a
تعداد نتایج: 13735886 فیلتر نتایج به سال:
this study aimed at determining the evapotranspiration and crop coefficient (kc) of sugar beet during the plant growth using drainage lysimeter by using water balance and experimental methods for three years in shahrekord. after sugar beet planting and out of lysimeter, evapotranspiration was measured weekly and monthly by measuring the factors of the water- balance equation. results showed tha...
in rainfed areas of iran, cereal yields are low, variable and mainly as a result of inadequate and erratic seasonal rainfall and associated management factor, such as late sowing date (or late crop germination). in order to investigate the effects of single irrigation and nitrogen on bread wheat (triticum aestivum l. var. sabalan) a field experiment was conducted as split plot arranged in a ran...
in order to investigate genetic correlation and path analysis between grain yield and yield components, fifteen early maturing hybrids of grain corn (zea. mays) using a randomized complete block design with 4 replications were evaluated in khoramabad agricultural research center, iran. the data were collected and analyzed for ear emergence date, anthesis date, maturity date, plant height, ear h...
willows due to the rapid growth rate, low nutrient requirements, resistance to many pollutants, and environmental stresses are ideal candidates for developing the landscapes and reducing the environmental degradation. the purpose of this study was to determine the response of salix alba seedling to water deficit conditions. this experiment was set up as complete randomized design with five irri...
to evaluate the effects of accelerated aging and cold stress on seed germination and seedling growth indices in five oilseed rape cultivars (hyola330, hyola401, hyola420, syn3 and pr401/15e), an experiment was carried out in a completely randomized design of three replications. results indicated that the cultivars were significantly different in germination percentage, seed vigour, germination ...
در این رساله با استفاده از مفهوم a – می نیماکس مدول ها ثابت می کنیم به ازای هر زیرمدول a – می نیماکس n از m))h_a^t مجموعه ی ایده آل های اول وابسته ی n/m))h_a^t متناهی می باشد. فرض کنیم r یک حلقه ی جابه جایی و نوتری و a یک ایده آل از r باشد. همچنین فرض کنیم m یک r – مدول a – می نیماکس و t یک عدد صحیح نامنفی باشند. در این صورت ابتدا نشان می دهیم که برای هر i<t، m))h_a^i مدول a – می نیماکس می باشد...
drought stress as the most important abiotic stress plays a significant role in reduction of crops yield. this study was conducted at six agricultural experimental stations (karadj, ardebil, arak, mashhad, jolgerokh and miandoab) during 2006-08 cropping seasons. experiments were carried out under normal irrigation and post-anthesis drought stress conditions using 18 wheat genotypes. experimenta...
the aim of this research was to evaluate the effect of one session of exhaustive exercise with low intensity (55-65% vo2max), moderate intensity (65-75% vo2max) and high intensity (75-85% vo2max) on adiponectin in active women. for this purpose, 30 healthy women (mean age 21.6 years, weigh 59.7+3.35 kg, vo2max 39.1+0.58 ml/kg/min, no history of cardiovascular diseases and diabetes) were selecte...
the goal of this article is mapping urban management science. the main question of the research is “what are the subject areas of urban management science and how is the relation between these subject areas?” the map of urban management science can help to recognize urban management and its subject areas and can help policy makers to get familiar with the priorities in this subject area. for th...
the green lacewing, chrysoperla carnea (stephens) is one of the important predators of many pests including helicoverpa armigera (hübner) and tetranychus urticae koch. in insectaries, the larvae of this predator are mainly reared on anagasta kuehniella egg. in this research, biological and life table parameters of c. carnea in feeding on a. kuehniella egg as a laboratory prey and two natural pr...
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