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| 施氮对烤烟氮素积累、分配及土壤氮素矿化的影响 | |
| 引用本文： | 马兴华,苑举民,荣凡番,元建,石屹,张忠锋,孙兆学,刘乃雁.施氮对烤烟氮素积累、分配及土壤氮素矿化的影响[J].中国烟草科学,2011,32(1):17-21. |
| 作者姓名： | 马兴华 苑举民 荣凡番 元建 石屹 张忠锋 孙兆学 刘乃雁 |
| 作者单位： | 1. 农业部烟草类作物质量控制重点开放实验室,中国农业科学院烟草研究所,青岛,266101 2. 江西省烟叶科学研究所,南昌,330029 3. 红云红河烟草(集团)责任有限公司,昆明,650022 4. 山东莱芜烟草有限公司,山东,莱芜,271100 5. 山东日照烟草有限公司,山东,日照,276826 |
| 基金项目： | 国家烟草专卖局项目，中央级公益性科研院所基本科研业务费专项资金 |
| 摘 要： | 在田间试验条件下,通过设置不同的施氮量处理研究了施氮对烤烟氮素累积、分配及棕壤氮素矿化的影响。结果表明,随施氮量增加,烟株氮素累积量增加;不施氮处理的氮素快速累积期在移栽后9—11周,之后烟株氮素累积量降低;而施氮处理烤烟的氮素快速累积期提前至移栽后7—9周,之后烟株氮素累积量继续增加。氮素在不同器官中的分配比例为叶片>茎>根系,随生育进程,中部叶及下部叶的氮素分配比例降低,烟茎氮素分配比例增加,根系氮素分配比例变化较小;施氮推迟了上部叶最大氮素分配比例出现的时间,不施氮、施纯氮82.5、105.0 kg/hm2处理分别出现在移栽后11周、13周和15周。随施氮量增加,土壤无机氮含量及氮素表观矿化量增加;施氮推迟了土壤无机氮含量高峰值及阶段氮素表观矿化量高峰值的出现时间。在植烟条件下,移栽后5周内各处理的氮素表观矿化量均为正值,6周后均为负值,与施氮量无关。 |
| 关 键 词： | 烤烟 氮素累积量 分配比例 土壤氮素矿化 |
Effects of Nitrogen Application on Nitrogen Accumulation ,Distribution and Soil Nitrogen Mineralization |
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| MA Xinghua,YUAN Jumin,RONG Fanfan,YUAN Jian,SHI Yi,ZHANG Zhongfeng,SUN Zhaoxue,LIU Naiyan.Effects of Nitrogen Application on Nitrogen Accumulation ,Distribution and Soil Nitrogen Mineralization[J].Chinese Tobacco Science,2011,32(1):17-21. | |
| Authors: | MA Xinghua YUAN Jumin RONG Fanfan YUAN Jian SHI Yi ZHANG Zhongfeng SUN Zhaoxue LIU Naiyan |
| Affiliation: | MA Xinghua1,YUAN Jumin2,RONG Fanfan3,YUAN Jian1,SHI Yi1,ZHANG Zhongfeng1*,SUN Zhaoxue4,LIU Naiyan5 [1.Key Laboratory of Tobacco Quality Control,Ministry of Agriculture,Tobacco Research Institute of CAAS,Qingdao 266101,China,2.Institute of Tobacco Leaf Science of Jiangxi Province,Nanchang 330029,3.Hongyun and Honghe Tobacco(Group) Limited Company,Kunming 650022,4.Laiwu Tobacco Company,Laiwu,Shandong 271100,5.Rizhao Tobacco Company,Rizhao,Shandong 276826,China] |
| Abstract: | A field experiment was carried out to investigate the effect of nitrogen application rates on flue-cured tobacco nitrogen accumulation,distribution and soil nitrogen mineralization on brown soil.The results indicated that the nitrogen accumulation of organs and whole shoot increased with higher nitrogen rates.Fast nitrogen accumulation stage of N0 treatment occurred from 9 to 11 weeks after transplanting(WAT),but for the treatments of nitrogen application,the fast accumulation stage occurred two weeks earli... |
| Keywords: | flue-cured tobacco nitrogen accumulation amount distribution proportion soil nitrogen mineralization |
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