نتایج جستجو برای: line source sprinkler system
تعداد نتایج: 2866675 فیلتر نتایج به سال:
به منظور تعیین فرایند تغییر عیار قند و عملکرد ریشه ی هیبریدهای جدید چغندرقند در رژیم های مختلف آبیاری مطالعه ای در مرکز تحقیقات کشاورزی و منابع طبیعی فارس _ایستگاه تحقیقاتی زرقان انجام شده پژوهش در قالب چهارچوب مشابه آزمایش اسپلیت بلوک با طرح پایه بلوک های کامل تصادفی دارای دو فاکتور بود. فاکتور رقم شامل شش سطح :1-28064، 2- 28058، 3- 28928 ، 4- زرقان ، 5- جام و 6- رسول (شاهد حساس) در کرت های ...
in order to study the yield and growth indix of potato under water deficit, an experiment was conducted with line-source sprinkler irrigation in khorasan razavi agricultural and natural resource research center. water deficit levels were included, at 0.75m from line-source (control), at 3.75m from line source (very mild deficit), at 6.75m from line-source (mild deficit), at 9.75m from line-sour...
The main objective of this study was determining the best sprinkler system and ranking total operational sprinkler systems in Isfahan province. The data was collected through 262 questionnaires completed by farmers in Feridan and Semirom cities in Isfahan province. Ranking and comparing the systems were done via criteria matrix and qualitative efficiency of objects and compromise programming. B...
The radial water distribution and irrigation performance of an agricultural sprinkler with plastic nozzles were analysed. Twenty-six tests with an isolated sprinkler corresponding to different combinations of three working pressure (p, 200, 300 and 400 kPa) and three nozzle diameters of the main nozzle (4.0, 4.5 and 5.0 mm) were performed to evaluate the radial water distribution curves, All th...
Because of limiting water resources and increasing demand for food, it is necessary to investigate the effect of irrigation systems on water productivity. This research was conducted to evaluate yield and yield characteristics of two potato varieties under sprinkler and trickle irrigation systems. The treatments were two irrigation systems (sprinkler and trickle irrigation) and two potato varie...
The main objective of this study was determining the best sprinkler system and ranking total operational sprinkler systems in Isfahan province. The data was collected through 262 questionnaires completed by farmers in Feridan and Semirom cities in Isfahan province. Ranking and comparing the systems were done via criteria matrix and qualitative efficiency of objects and compromise programming. B...
Due to limited energy resources, excessive emission of CO2, global warming, increase of mean temperature, serious impacts have resulted on our living environment, and thus, energy saving and carbon reduction have become urgent issues. Planting grass, flowers and trees can absorb and reduce CO2, thus meeting the requirements for energy saving and carbon reduction in environmental protection. At ...
Reliability study on a sprinkler system based on the new proposal for old high-rise buildings in Hong Kong was carried out. Fault tree analysis was used to analyze the reliability of the sprinkler system. The mean fractional dead time representing the failure probability of the sprinkler system on demand was calculated. It is found that the design is not so promising because of using smaller ta...
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