Yield and Nicotine Content of Flue-Cured Tobacco as Affected by Soil Nitrogen Mineralization

JU Xiao-Tang; CHAO Feng-Chun; LI Chun-Jian; JIANG Rong-Feng; P.CHRISTIE; ZHANG Fu-Suo

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Yield and Nicotine Content of Flue-Cured Tobacco as Affected by Soil Nitrogen Mineralization

机译：土壤氮素矿化对烤烟产量和尼古丁含量的影响

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Nitrogen (N) supply is the most important factor affecting yield and quality of flue-cured tobacco (FCT).A field experiment and an in situ incubation method were used to study the effects of soil N mineralization in the later stages of growth on yield and nicotine content of FCT in Fenggang and Jiusha,Guizhou Province.The yield and market value of FCT at Fenggang were much lower than those at Jinsha.However,the nicotine content of middle and upper leaves was much higher at Fenggang than at Jiusha when the same rate of fertilizer N was applied,which might be due to a higher N supply capacity at the Fenggang site.At later stages of growth (7-16 weeks after transplanting),the soil net N mineralization at Fenggang (56 kg N ha-1) was almost double that at Jiusha (30 kg N ha-1).While soil NHa-N and NO3-N were almost exhausted by the plants or leached 5 weeks after transplanting,the N taken up at the later growth stages at Fenggang were mainly derived from soil N mineralization,which contributed to a high nicotine content in the upper leaves.The order of soil N contribution to N buildup in different leaves was:upper leaves > middle leaves > lower leaves.Thus,soil N mineralization at late growth stages was an important factor affecting N accumulation and therefore the nicotine content in the upper leaves.

机译：氮的供应是影响烤烟产量和质量的最重要因素。田间试验和原位培养方法研究了土壤氮矿化在生长后期对产量的影响。丰冈和九寨的FCT含量和烟碱含量。凤冈的FCT的产量和市场价值远低于金沙。但是，凤冈中叶和上叶的烟碱含量却比九沙高得多。施用相同的氮肥比例，可能是由于凤岗基地的氮素供应量较高。在生长的后期（移栽后7-16周），凤岗土壤净氮矿化（56 kg N ha- 1）几乎是九寨（30 kg N ha-1）的两倍。虽然土壤NHa-N和NO3-N几乎被植物耗尽或在移植后5周淋滤，但氮在凤岗的后期生长阶段被吸收主要来自土壤氮的矿化作用在上部叶片中烟碱含量较高。土壤氮在不同叶片中对氮积累的贡献顺序为：上部叶片>中部叶片>下部叶片。因此，生长后期土壤氮的矿化是影响氮积累的重要因素。因此，上部叶片中的尼古丁含量。

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来源
《土壤圈（英文版）》 |2008年第2期|227-235|共9页
作者
JU Xiao-Tang; CHAO Feng-Chun; LI Chun-Jian; JIANG Rong-Feng; P.CHRISTIE; ZHANG Fu-Suo;
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作者单位

Key Laboratory of Plant-Soil Interactions,MOE;

College of Agricultural Resources and Environmental Sciences,China rnAgricultural University,Beijing 100094 (China);

Key Laboratory of Plant-Soil Interactions,MOE;

College of Agricultural Resources and Environmental Sciences,China rnAgricultural University,Beijing 100094 (China);

Key Laboratory of Plant-Soil Interactions,MOE;

College of Agricultural Resources and Environmental Sciences,China rnAgricultural University,Beijing 100094 (China);

Key Laboratory of Plant-Soil Interactions,MOE;

College of Agricultural Resources and Environmental Sciences,China rnAgricultural University,Beijing 100094 (China);

Key Laboratory of Plant-Soil Interactions,MOE;

College of Agricultural Resources and Environmental Sciences,China rnAgricultural University,Beijing 100094 (China);

Agricultural and Environmental Science Department,Queen's University Belfast,Belfast BT9 5PX (UK);

Key Laboratory of Plant-Soil Interactions,MOE;

College of Agricultural Resources and Environmental Sciences,China rnAgricultural University,Beijing 100094 (China);

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
原文格式 PDF
正文语种 chi
中图分类农业基础科学;
关键词
flue cured tobacco,nicotine content,soil N mineralization,tobacco quality,tobacco yield;

机译：烤烟;烟碱含量;土壤氮矿化;烟草品质;烟草产量;

Yield and Nicotine Content of Flue-Cured Tobacco as Affected by Soil Nitrogen Mineralization

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