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| 云南曲靖烟区典型植烟土壤氮素矿化规律研究 | |
| 引用本文： | 马兴华,荣凡番,苑举民,王程栋,董建新,石屹.云南曲靖烟区典型植烟土壤氮素矿化规律研究[J].中国烟草学报,2011,17(6):66-69. |
| 作者姓名： | 马兴华 荣凡番 苑举民 王程栋 董建新 石屹 |
| 作者单位： | 1. 中国农业科学院烟草研究所,农业部烟草生物学与加工重点实验室,青岛科苑经四路11号 266101 2. 红云红河烟草(集团)责任有限公司,昆明红锦路181号,650022 3. 江西省烟叶科学研究所,南昌洪城路298号,330029 |
| 基金项目： | 特色优质烟叶开发重大专项“低危害烟叶研究开发(110201101006(ts-06))” |
| 摘 要： | 以云南曲靖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宣威水稻土、罗平黄壤、罗平红壤、宣威红壤和宣威紫色土土壤铵态氮含量迅速增加,此期间的氮累积矿化量约占最高氮矿化量的83.7%。14 d后,宣威水稻土、罗平黄壤、宣威红壤和罗平红壤土壤铵态氮含量缓慢增加,表现为氮素的持续矿化;罗平红壤培养28 d土壤铵态氮含量达到最高值,其他3个土壤在42 d达到最高值;而宣威紫色土在14 d后土壤铵态氮含量持续减少,表现为氮素的固定。培养过程中(除42 d外),土壤铵态氮含量均表现为罗平黄壤、宣威水稻土>宣威红壤>罗平红壤>宣威紫色土。土壤氮累积矿化速率随培养时间逐渐降低且符合对数函数,罗平黄壤最高,宣威紫色土最低。罗平黄壤、宣威水稻土、罗平红壤土壤氮矿化率随培养时间逐渐增加,罗平黄壤的土壤氮矿化率最高,宣威紫色土最低。说明罗平黄壤和宣威水稻土的供氮能力较强,生产中应适当降低氮肥用量;宣威紫色土的供氮能力较弱,生产中适当补充氮肥,促进烟苗生长。 |
| 关 键 词： | 植烟土壤 有机氮矿化 氮矿化率 供氮能力 |
Study on nitrogen mineralization of typical tobacco-growing soils in Qujing of Yunnan province |
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| MA Xing-hua , RONG Fan-pan , YUAN Ju-min , WANG Cheng-dong , DONG Jian-xin , SHI Yi.Study on nitrogen mineralization of typical tobacco-growing soils in Qujing of Yunnan province[J].Acta Tabacaria Sinica,2011,17(6):66-69. | |
| Authors: | MA Xing-hua RONG Fan-pan YUAN Ju-min WANG Cheng-dong DONG Jian-xin SHI Yi |
| Affiliation: | MA Xing-hua1,RONG Fan-pan2,YUAN Ju-min3,WANG Cheng-dong1,DONG Jian-xin1,SHI Yi11 Tobacco Research Institute of CAAS,Key Laboratory of Tobacco Biology and Processing,Ministry of Agriculture,Qingdao 266101,China,2 Hongyun and Honghe Tobacco(Group) Limited Company,Kunming 650022,3 Institute of Tobacco Leaf Science of Jiangxi Province,Nanchang 330029 |
| Abstract: | Five typical tobacco-growing soils,i.e.Paddy soil(sampled from Xuanwei,S1),Yellow soil(sampled from Luoping,S2),Red soil(sampled from Xuanwei,S3),Red soil(sampled from Luoping,S4),and Purple soil(sampled from Xuanwei,S5),were chosen to measure the nitrogen mineralization by the Warning incubation method to investigate the organic nitrogen mineralization of tobacco-growing soils in Qujing of Yunnan province.Results showed that soil ammonium nitrogen content of all soils samples was increased significantly fr... |
| Keywords: | soil tobacco-growing organic nitrogen mineralization nitrogen mineralization rate soil N-supplying capacity |
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