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Acta Agron Sin ›› 2008, Vol. 34 ›› Issue (12): 2223-2227.doi: 10.374/SP.J.1006.2008.02223

• RESEARCH NOTES • Previous Articles    

Nitrogen Use Efficiency of Base Fertilizer and Top Dressing in Flue-Cured Tobacco in Rainy Regions

YUAN Shi-Hao12,YI Jian-Hua2,PU Wen-Xuan2,HAN Jin-Feng1,WANG Yao-Fu12*   

  1. 1 Agronomy College of Henan Agricultural University, Zhengzhou 450002, Henan; 2 Research Center of China Tobacco Hunan Industrial Co. Ltd, Changsha 410007, Hunan, China
  • Received:2008-05-07 Revised:2008-07-16 Online:2008-12-12 Published:2008-10-10
  • Contact: WANG Yaofu E-mail:yaofuwang@163.com

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Abstract:

A field experiment was conducted using tobacco (Nicotiana tobacum L.) cultivar K326 grown in random block design with three replications in three treatments by 15N isotopes tracer in Liuyang institute of Hunan in 2007. The traits associated with nitrogen use efficiency were investigated during different growth stages of flue-cured tobacco. The results showed that tobacco plant mainly absorbed nitrogen from fertilizers in root elongation and vigorous growth stages and from soil in maturing stage. Nitrogen uptake reduced from base fertilizer, but increased from top dressing with the increase of top dressing under the same fertilizer application amount. At the same time, nitrogen use efficiency rose for base fertilizer, but declined for top dressing. The utilization of top dressing was significantly higher than that of base fertilizer in different treatments at different growth stages. After harvesting of tobacco leaves, nitrogen residue in base fertilizer was less than that in top dressing with the increase of top dressing ratio, but the total nitrogen residue and loss decreased. So enhancing properly the ratio of top dressing can improve nitrogen use efficiency of flue-cured tobacco in rainy regions.

Key words: Flue-cured tobacco;Basic dressing;Top dressing;Nitrogen use efficiency

[1]Han J-F(韩锦峰), Wang Y-F(汪耀富), Qian X-G(钱晓刚). To-bacco Physiology of Cultivation (烟草栽培生理). Beijing: China Agriculture Press, 2003. pp 163-184(in Chinese)
[2]Qin Y-Q(秦艳青), Li C-J(李春俭), Zhao Z-X(赵正雄), Wu X-P(武雪萍), Zhang F-S(张福锁). Effects of rates and methods of N application on growth and N uptake of flue-cured tobacco. Plant Nutr Fert Sci (植物营养与肥料学报), 2007, 13(3): 436-442 (in Chinese with English abstract)
[3]Guo P-G(郭培国), Chen J-J(陈建军), Zheng Y-L(郑燕玲), Han J-F(韩锦峰). Study on utilization of nitrogen by flue-cured to-bacco at different nitrogen levels. Trop Subtrop Soil Sci (热带亚热带土壤科学), 1996, 5(3): 145-148(in Chinese with English abstract)
[4]Chen P(陈萍), Li T-F(李天福), Zhang X-H(张晓海), Ran B-D(冉邦定), Wang S-H(王树会), Xie P(谢萍), Yang S-Y(杨硕媛), Yang B-S(杨璧愫). Exploring tobacco plant's absorption and distribution of nitrogen fertilizers by using 15N tracing technique. J Yunnan Agric Univ (云南农业大学学报), 2003, 18(1): 1-4 (in Chinese with English abstract)
[5]Shi Y(石玉), Yu Z-W(于振文), Wang D(王东), Li Y-Q(李延奇), Wang X(王雪). Effects of nitrogen rate and ratio of base fertil-izer and topdressing on uptake, translocation of nitrogen and yield in wheat. Acta Agron Sin (作物学报), 2006, 32(12): 1860-1866 (in Chinese with English abstract)
[6]Shan D-X(单德鑫), Yang S-H(杨书海), Li S-Q(李淑芹), Xu J-G(许景钢). Absorption and distribution of nitrogen of flue-cured tobacco with 15N tracer. Chin Soil Fert Sci (中国土壤与肥料), 2007, (2): 43-45 (in Chinese with English abstract)
[7]Zhu Z-L(朱兆良). Loss of fertilizer N from plants-soil system and the strategies and techniques for its reduction. Soil Environ Sci (土壤与环境), 2000, 9(1): 1-6 (in Chinese with English ab-stract)
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