کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8878909 | 1624428 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Winter and spring night-warming improve root extension and soil nitrogen supply to increase nitrogen uptake and utilization of winter wheat (Triticum aestivum L.)
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کلمات کلیدی
NRENUEN recovery efficiencyNAEN agronomic efficiencySoil nitrogen supplyN use efficiency - بهره وری استفاده شودRoot growth - رشد ریشهnitrate reductase - نیترات ردوکتازNitrogen - نیتروژنNitrogen utilization efficiency - کارایی مصرف نیتروژنGlutamine synthetase - گلوتامین سنتتازWinter wheat - گندم زمستانه
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Winter and spring night-warming improve root extension and soil nitrogen supply to increase nitrogen uptake and utilization of winter wheat (Triticum aestivum L.) Winter and spring night-warming improve root extension and soil nitrogen supply to increase nitrogen uptake and utilization of winter wheat (Triticum aestivum L.)](/preview/png/8878909.png)
چکیده انگلیسی
Elucidating the effects of asymmetric warming during winter and spring will help develop a feasible crop management strategy for climate change. Field experiments were conducted using the Yangmai-13 (vernal type) and Yannong-19 (semi-winter type) winter wheat cultivars to investigate the effects of night-warming during winter (warming by 1.47-1.53â¯Â°C from tillering to jointing), spring (warming by 1.68-1.77â¯Â°C from jointing to booting), and winterâ¯+â¯spring (warming by 1.53-1.60â¯Â°C from tillering to booting) on plant growth and N utilization in 2014-2016. The results showed that the grain yield, N agronomic efficiency (NAE), and N recovery efficiency (NRE) of both cultivars were highly increased in response to night-warming, which were associated with enhanced dry matter and N accumulation, and winterâ¯+â¯spring night-warming resulted in greater increases than winter night-warming and spring night-warming. Furthermore, the increase in pre-anthesis N accumulation was much higher than after anthesis, resulting in a greater increase in post-anthesis dry matter accumulation due to more leaf N distribution at anthesis to support photosynthetic production. Root growth characteristics (i.e., root length, surface area and volume, and root bleeding intensity) were significantly promoted, which favored plant N uptake. Soil urease and protease activity as well as the net N mineralization rate, which are involved in soil N supply capacity, were increased, whereas soil inorganic N content and apparent N surplus were clearly decreased, which indicated that plant N uptake capacity was highly improved in response to night-warming conditions. In conclusion, winter and spring night-warming improve pre-anthesis root growth and N uptake ability to promote plant growth, resulting in increased N utilization efficiency with reduced N fertilizer loss, and winterâ¯+â¯spring night-warming has more advantages for N uptake and utilization of winter wheat.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Agronomy - Volume 96, May 2018, Pages 96-107
Journal: European Journal of Agronomy - Volume 96, May 2018, Pages 96-107
نویسندگان
Chenxi Hu, Zhongwei Tian, Shilu Gu, Hua Guo, Yonghui Fan, Muhammad Abid, Kai Chen, Dong Jiang, Weixing Cao, Tingbo Dai,