ACTA AGRICULTURAE BOREALI-SINICA ›› 2016, Vol. 31 ›› Issue (5): 159-166. doi: 10.7668/hbnxb.2016.05.024

Special Issue: Tobacco Soil fertilizer

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Effects of Biochar Application Combined with Nitrogen Fertilizer on Growth of Flue-cured Tobacco and Main Chemical Composition of Tobacco Leaves

LIU Hui1, ZHOU Qingming1, LI Juan1, ZHANG Liming2, ZHANG Mingfa2, SUN Min1, LIU Zhixuan1, CHEN Jialiang1   

  1. 1. College of Agronomy, Hunan Agricultural University, Changsha 410128, China;
    2. Xiangxi Autonomous Prefecture Branch of Hunan Provincial Tobacco Company, Jishou 416000, China
  • Received:2016-07-12 Published:2016-10-28

Abstract: In order to study the effects of different amount of biochar application combined with nitrogen fertilizer on the growth of flue-cured tobacco and the main chemical composition of tobacco leaves.Yunyan 87 was selected as testing material and a field experiment was designed to study the effects of nine different amount of biochar application combined with nitrogen fertilizer on the growth of flue-cured tobacco and the main chemical composition of tobacco leaves.The results showed that biochar application combined with nitrogen fertilizer could regulate and promote the growth of flue-cured tobacco,accelerate the speed of the leaves,but amount of biochar application was not positively correlated with the role of promotion tobacco growth,when applied to the biochar more than 3 750 kg/ha,and nitrogen fertilizer at 112.5 kg/ha,the role in promoting tobacco growth gradually decreased.Biochar application combined with nitrogen fertilizer could promote root growth,and improve the amount of dry matter accumulation of flue-cured tobacco.Coordinate the content of total sugar and reducing sugar,decline the content of starch,and improve the content of potassium in tobacco leaves and improve the combustibility of tobacco leaves.At the same time,it could also improve the ratio between sugar and nicotine,the ratio between sugar and nitrogen and the ratio between sugar and nitrogen of tobacco leaves.It was harmful to improve the ratio between sugar and nitrogen and the ratio between potassium and chlorine of tobacco leaves that a lower proportion of biochar application combined with nitrogen fertilizer that was 3 000 kg/ha biochar and 75.0 kg/ha nitrogen fertilizer.It was concluded that 3 750 kg/ha biochar and 112.5 kg/ha nitrogen fertilizer was the optimal proportion which had faster growth of tobacco plant and the appropriate content of main chemical composition of tobacco leaves.

Key words: Flue-cured tobacco, Biochar, Nitrogen fertilizer, Chemical composition

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Cite this article

LIU Hui, ZHOU Qingming, LI Juan, ZHANG Liming, ZHANG Mingfa, SUN Min, LIU Zhixuan, CHEN Jialiang. Effects of Biochar Application Combined with Nitrogen Fertilizer on Growth of Flue-cured Tobacco and Main Chemical Composition of Tobacco Leaves[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2016, 31(5): 159-166. doi: 10.7668/hbnxb.2016.05.024.

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