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| 典型植烟土壤氮素矿化研究 | |
| 引用本文： | 马兴华,荣凡番,苑举民,刘光亮,石屹.典型植烟土壤氮素矿化研究[J].中国烟草科学,2011,32(3):61-65. |
| 作者姓名： | 马兴华 荣凡番 苑举民 刘光亮 石屹 |
| 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. 红云红河烟草(集团)责任有限公司,昆明,650022 3. 江西省烟叶科学研究所,南昌,330029 |
| 基金项目： | 国家烟草专卖局项目"我国主要植烟土壤氮素矿化特性、供氮潜力应用研究"，中央级公益性科研院所基本科研业务费专项资金 |
| 摘 要： | 以湖南、湖北和山东烟区的主要植烟土壤为研究对象,采用Warning淹水培养方法,研究了不同类型土壤的氮素矿化过程。结果表明,淹水培养0~14 d为土壤铵态氮含量快速增长期,培养14 d的土壤铵态氮含量显著高于培养始期,土壤氮素矿化速率为正值,表现为氮的矿化。15~28 d土壤铵态氮含量变化较小。28 d后土壤铵态氮含量逐渐降低,各阶段的土壤氮素矿化速率为负值,表现为氮的固定。在氮素矿化阶段,土壤铵态氮含量表现为水稻土>黄棕壤(南漳)>黄壤>黄棕壤(利川)>红壤、褐土。在整个培养过程中,水稻土的铵态氮含量最高,棕壤和褐土的铵态氮含量最低,说明水稻土的氮素供应能力较高,棕壤和褐土的氮素供应能力较低。回归分析表明,培养7、14、21和28 d的氮累积矿化量与土壤有机质含量和全氮含量呈极显著或显著正相关关系,说明有机质和全氮含量是评价土壤供氮能力的有效指标。 |
| 关 键 词： | 植烟土壤 有机氮矿化 矿化速率 累积矿化量 |
Studies on Nitrogen Mineralization of Typical Tobacco-growing Soils |
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| MA Xinghua,RONG Fanpan,YUAN Jumin,LIU Guangliang,SHI Yi.Studies on Nitrogen Mineralization of Typical Tobacco-growing Soils[J].Chinese Tobacco Science,2011,32(3):61-65. | |
| Authors: | MA Xinghua RONG Fanpan YUAN Jumin LIU Guangliang SHI Yi |
| Affiliation: | MA Xinghua1,RONG Fanpan2,YUAN Jumin3,LIU Guangliang1,SHI Yi1 [1.Key Laboratory of Tobacco Quality Control,Ministry of Agriculture,Tobacco Research Institute of CAAS,Qingdao 266101,China,2.Hongyun and Honghe Tobacco(Group) Limited Company,Kunming 650022,3.Institute of Tobacco Leaf Science of Jiangxi Province,Nanchang 330029,China] |
| Abstract: | In order to investigate the organic nitrogen mineralization of tobacco-growing soils,six typical tobacco-growing soils: Paddy soil(sampled from Shaoyang),Yellow brown soil from Nanzhang,Yellow soil(sampled from Shaoyang),Yellow brown soil from Lichuan,Red soil(sampled from Nanzhang) and Cinnamon soil(sampled from Yishui),were chosen to measure the nitrogen mineralization by using the Warning incubation method.The soils were waterlogged for 56 days.The results indicated that soil ammonium nitrogen showed a t... |
| Keywords: | tobacco-growing soil organic nitrogen mineralization mineralization rate accumulative mineralization amount |
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