Nitrogen dynamics in the intact grasses Poa trivialis and Panicum maximum receiving contrasting supplies of nitrogen
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منابع مشابه
Nitrogen dynamics in the intact grasses Poa trivialis and Panicum maximum receiving contrasting supplies of nitrogen.
The C(3) grass Poa trivialis and the C(4) grass Panicum maximum were grown in sand culture and received a complete nutrient solution with nitrogen supplied as 1.5 mol m(-3) NH(4)NO(3). (15)N tracer techniques were used to quantify the relative use of root uptake and mobilization in supplying nitrogen to growing leaves in intact plants which either continued to receive nitrogen or which received...
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L. Song, X. M. Bao, X. J. Liu, Y. Zhang, P. Christie, A. Fangmeier, and F. S. Zhang College of Resources and Environmental Sciences, Key Laboratory of Plant-Soil Interactions of the Ministry of Education, China Agricultural University, Beijing 100193, China State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences (CAS), Urumqi 83...
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امروزه سالیتون ها بعنوان امواج جایگزیده ای که تحت شرایط خاص بدون تغییر شکل در محیط منتشر می-شوند، زمینه مطالعات گسترده ای در حوزه اپتیک غیرخطی هستند. در این راستا توجه به پدیده پراش گسسته، که بعنوان عامل پهن شدگی باریکه نوری در آرایه ای از موجبرهای جفت شده، ظاهر می گردد، ضروری است، زیرا سالیتون های گسسته از خنثی شدن پراش گسسته در این سیستم ها بوسیله عوامل غیرخطی بوجود می آیند. گسستگی سیستم عامل...
Impacts of water and nitrogen supplies on the physiology, leaf demography and nitrogen dynamics of Betula pendula.
We determined the response of Betula pendula Roth. trees to a restricted water supply, and quantified the interactions between tree N and water status on leaf demography and internal N cycling. In April 1993, 3-year-old trees were planted in sand culture and four treatments applied: high-N supply (56 mg tree(-1) week(-1)) with either 2 dm(3) water week(-1) (HN+) or 0.9 dm(3) water week(-1) (HN-...
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ژورنال
عنوان ژورنال: Journal of Experimental Botany
سال: 2002
ISSN: 1460-2431
DOI: 10.1093/jxb/erf066