| The response of the agronomical traits and chemical components of tobacco to organic materials with varied carbon/nitrogen ratios |
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| DOI：10.7606/j.issn.1000-7601.2017.04.10 |
| Key Words: flue-cured tobacco carbon and nitrogen ratio organic materials agronomical traits chemical component |
| Author Name | Affiliation | | JIANG Gui-ying | College of Resources and Enviromental Sciences, Henan Agricultural University, Zhengzhou, Henan 450002, China | | ZHANG Hong | College of Resources and Enviromental Sciences, Henan Agricultural University, Zhengzhou, Henan 450002, China | | ZHANG Yu-jun | College of Resources and Enviromental Sciences, Henan Agricultural University, Zhengzhou, Henan 450002, China | | ZHU Jin-feng | Luohe City Tobacco Corporation of Henan Province, Luohe, Henan 462000, China | | LIU Shi-liang | College of Resources and Enviromental Sciences, Henan Agricultural University, Zhengzhou, Henan 450002, China | | LIU Fang | College of Resources and Enviromental Sciences, Henan Agricultural University, Zhengzhou, Henan 450002, China |
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| Abstract: |
| The carbon (C) and nitrogen (N) metabolism directly affects chemical component and quality of Tobacco, and the soil carbon-nitrogen ratio (C/N) is the major factor responsible for the C and N metabolism of tobacco and its chemical composition. In this study, six C/N ratio treatments were set: 0, 6, 20, 40, 60, 90, the C/N ratio in all of these treatments were adjusted by the maize straw and sesame manure, with the objectives to explore the effect of C/N ratio on the agronomic traits and chemical component of tobacco by the pot experiment. The results were showed that the dry matter of tobacco roots, stem, and leaves were decreased under the treatments with the C/N ratios of 90, 0, and 6. While under the treatments with C/N of 20 and 40, the tobacco leaf area was increased, approximately to 600 m2, resulting in increase of dry matter of tobacco roots, stems, and leaves in the relevant treatments (i.e. the dry matter of tobacco leaf was around 80～95 g·plant-1). For chemical component, under C/N of 90, the N and phosphorus absorption of tobacco leaf was reduced, and the content of nicotine in the tobacco leaf at middle and bottom part decreased, while the potassium (K) content increased to the maximum level of 31.3 g·kg-1. The content of total sugar and reducing sugar of tobacco increased as C/N ratio increased. In conclusion, C/N ratio of 20 to 40 is favorable for tobacco growth and chemical composition. |
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