N mineralization as affected. by long-term n fertilization and its relationship with crop n uptake
文献类型：期刊论文
| 作者 | Yan, DZ; Wang, DJ; Sun, RJ; Lin, JH |
| 刊名 | Pedosphere
 |
| 出版日期 | 2006-02-01 |
| 卷号 | 16期号:1页码:125-130 |
| 关键词 | Anaerobic incubation Field incubation N application N mineralization N uptake |
| ISSN号 | 1002-0160 |
| 通讯作者 | Yan, dz(dzyan@issas.ac.cn) |
| 英文摘要 | A field experiment established in 1997 was conducted to study the effect of long-term n fertilizer application on n mineralization in a paddy soil determined using a laboratory anaerobic incubation followed with a field incubation and to measure the relationship between in situ n mineralization and crop n uptake. to estimate n mineralization in the laboratory, soil samples were collected from plots with n application at different rates for six years and were incubated. soils treated with fertilizer n mineralized more n than. unfertilized soils and mineralization increased with n application rates. also, the fraction of total n mineralized increased with increasing n fertilizer application. these findings meant that a substantial portion of previously applied n could be recovered slowly over time in subsequent crops. the field incubation of the plot receiving no fertilizer n showed that the nh4+-n concentration varied greatly during the rice-growing season and seasonal changes of n mineralization were due more to accumulation of nh4+-n than no3--n. rice n uptake increased up to a maximum of 82 kg n ha(-1) during the season. the close agreement found between in situ n mineralization and rice n uptake suggested that the measurement of in situ n mineralization could provide useful recommendations for adequate fertilizer n application. |
| WOS关键词 | NITROGEN MINERALIZATION ; AMMONIA VOLATILIZATION ; ORGANIC-MATTER ; SOIL ; WHEAT ; FIELD ; RESIDUES ; ROTATION ; SYSTEMS ; LOSSES |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000235041700016 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2379393 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Yan, DZ |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, DZ,Wang, DJ,Sun, RJ,et al. N mineralization as affected. by long-term n fertilization and its relationship with crop n uptake[J]. Pedosphere,2006,16(1):125-130. |
| APA | Yan, DZ,Wang, DJ,Sun, RJ,&Lin, JH.(2006).N mineralization as affected. by long-term n fertilization and its relationship with crop n uptake.Pedosphere,16(1),125-130. |
| MLA | Yan, DZ,et al."N mineralization as affected. by long-term n fertilization and its relationship with crop n uptake".Pedosphere 16.1(2006):125-130. |
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来源：中国科学院大学
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