کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6773071 | 1431823 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of experimental warming on nitrogen uptake by winter wheat under conventional tillage versus no-till systems
ترجمه فارسی عنوان
اثر گرم شدن آزمایشی بر جذب نیتروژن توسط گندم زمستانه در سیستم های شخم زنی معمولی در مقایسه با سیستم های بدون خنک
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کلمات کلیدی
گرمایش جهانی، نیتروژن معدنی، الگوی جذب نیتروژن، نیتروژن آلی، گندم زمستانه،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Despite the perceived importance of nitrogen (N) to growth and production of wheat, few studies have attempted to examine the effect of warming on wheat N uptake or its preference for NO3â-N vs. NH4+-N, especially under different tillage systems. In the North China Plain, an experimental warming (2â¯Â°C increase in soil during the jointing stage) study was conducted using in situ 15N labeling under till and no-till systems. We aimed to investigate the uptake of NO3â-N, NH4+-N, and glycine-N by winter wheat. Warming strongly enhanced wheat biomass (14.7% and 13.2% for till and no-till, respectively) and N content in biomass (11.1 and 7.4â¯gâ¯Nâ¯mâ2 for till and no-till, respectively). Total N uptake rates increased by 47% and 40% under till and no-till treatments, respectively. Warming changed the uptake pattern for the three N forms by significantly increasing the contributions of NO3--N by 16% and glycine-derived N by 5%, while decreasing the contribution of NH4+-N by 20% under the two tillage systems, on average. Collectively, high soil temperatures accelerated N uptake in winter wheat and improved the preferential contribution of NO3â-N and glycine-N due to the increase in soil glycine and NO3â content. Our findings suggest that enhanced N uptake improved growth of wheat and could reduce N losses through increased uptake of NO3â under till and no-till systems in the North China Plain under the warmer conditions that are likely in future.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil and Tillage Research - Volume 180, August 2018, Pages 116-125
Journal: Soil and Tillage Research - Volume 180, August 2018, Pages 116-125
نویسندگان
Ruixing Hou, Xingliang Xu, Zhu Ouyang,