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Mechanisms of soil N dynamics following long-term application of organic fertilizers to subtropical rain-fed purple soil in China
文献类型：期刊论文
| 作者 | Wang, Jing1; Zhu, Bo2 ; Zhang, Jinbo1,3,4,5; Mueller, Christoph6,7; Cai, Zucong1,3,4,5
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| 刊名 | SOIL BIOLOGY & BIOCHEMISTRY
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| 出版日期 | 2015-12-01 |
| 卷号 | 91页码:222-231 |
| 关键词 | Long-term field fertilization Gross N mineralization Nitrification N-15 tracing technique N loss |
| ISSN号 | 0038-0717 |
| 通讯作者 | Zhang, Jinbo |
| 英文摘要 | In this study, a N-15 tracing incubation experiment and an in situ monitoring study were combined to investigate the effects of different N fertilizer regimes on the mechanisms of soil N dynamics from a long-term repeated N application experiment. The field study was initiated in 2003 under a wheat-maize rotation system in the subtropical rain-fed purple soil region of China. The experiment included six fertilization treatments applied on an equivalent N basis (280 kg N ha(-1)), except for the residue only treatment which received 112 kg N ha(-1): (1) UC, unfertilized control; (2) NPK, mineral fertilizer NPK; (3) OM, pig manure; (4) OM-NPK, pig manure (40% of applied N) with mineral NPK (60% of applied N); (5) RSD, crop straw; (6) RSD-NPK, crop straw (40% of applied N) with mineral NPK (60% of applied N). The results showed that long-term repeated applications of mineral or organic N fertilizer significantly stimulated soil gross N mineralization rates, which was associated with enhanced soil C and N contents following the application of N fertilizer. The crop N Make and yield were positively correlated with gross mineralization. Gross autotrophic nitrification rates were enhanced by approximately 2.5-fold in the NPK, OM, OM-NPK, and RSD-NPK treatments, and to a lesser extent by RSD application, compared to the UC. A significant positive relationship between gross nitrification rates and cumulative N loss via interflow and runoff indicated that the mechanisms responsible for increasing N loss following long-term applications of N fertilizer were governed by the nitrification dynamics. Organic fertilizers stimulated gross ammonium (NH4+) immobilization rates and caused a strong competition with nitrifiers for NH4+, thus preventing a build-up of nitrate (NO3-). Overall, in this study, we found that partial or complete substitution of NPK fertilizers with organic fertilizers can reduce N losses and maintain high crop production, except for the treatment involving application of RSD alone. Therefore, based on the N transformation dynamics observed in this study, organic fertilizers in combination with mineral fertilizer applications (i.e. OM, OM-NPK, and RSD-NPK treatments) are recommended for crop production in the subtropical rain-fed purple soils in China. (C) 2015 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Soil Science |
| 研究领域[WOS] | Agriculture |
| 关键词[WOS] | DISSIMILATORY NITRATE REDUCTION ; CHILEAN NOTHOFAGUS FOREST ; NITROGEN TRANSFORMATIONS ; HILLSLOPE CROPLAND ; CROPPING SYSTEMS ; GRASSLAND SOIL ; N2O EMISSIONS ; DAIRY WASTE ; AMMONIUM ; SLURRY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000364502900025 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/13839]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 1.Nanjing Normal Univ, Sch Geog Sci, Nanjing 210023, Jiangsu, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 3.Jiangsu Prov Key Lab Mat Cycling & Pollut Control, Nanjing, Jiangsu, Peoples R China 4.Nanjing Normal Univ, Minist Educ, Key Lab Vitual Geog Environm VGE, Nanjing 210023, Jiangsu, Peoples R China 5.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing, Jiangsu, Peoples R China 6.Univ Giessen, Dept Plant Ecol IFZ, D-35392 Giessen, Germany 7.Univ Coll Dublin, Sch Biol & Environm Sci, Dublin, Ireland |
| 推荐引用方式 GB/T 7714 | Wang, Jing,Zhu, Bo,Zhang, Jinbo,et al. Mechanisms of soil N dynamics following long-term application of organic fertilizers to subtropical rain-fed purple soil in China[J]. SOIL BIOLOGY & BIOCHEMISTRY,2015,91:222-231. |
| APA | Wang, Jing,Zhu, Bo,Zhang, Jinbo,Mueller, Christoph,&Cai, Zucong.(2015).Mechanisms of soil N dynamics following long-term application of organic fertilizers to subtropical rain-fed purple soil in China.SOIL BIOLOGY & BIOCHEMISTRY,91,222-231. |
| MLA | Wang, Jing,et al."Mechanisms of soil N dynamics following long-term application of organic fertilizers to subtropical rain-fed purple soil in China".SOIL BIOLOGY & BIOCHEMISTRY 91(2015):222-231. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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