نتایج جستجو برای: 10 and 15 tonha

تعداد نتایج: 16998024  

Journal: :علوم گیاهان زراعی ایران 0
فاطمه افغانی دانشجوی کارشناسی ارشد دانشکده کشاورزی دانشگاه بیرجند سید وحید اسلامی استادیار دانشکده کشاورزی دانشگاه بیرجند

the effects of environmental factors on germination and emergence of hoary cress seeds were examined in laboratory and field experiments. germinability of hoary cress under light/dark conditions (90%) was significantly higher than when seeds were incubated under continuous dark (78%). hoary cress could germinate in a broad range of temperatures (15/6, 20/10, 25/15, 30/15, and 35/20?c). the germ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...

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