Nitrogen Balance and Loss in a Greenhouse Vegetable System in Southeastern China
文献类型：期刊论文
| 作者 | Min Ju; Zhao Xu; Shi Wei-Ming; Xing Guang-Xi; Zhu Zhao-Liang |
| 刊名 | PEDOSPHERE
 |
| 出版日期 | 2011-08-01 |
| 卷号 | 21期号:4页码:464-472 |
| 关键词 | ammonia volatilization intensive production N input N leaching N use efficiency |
| ISSN号 | 1002-0160 |
| 通讯作者 | Shi Wei-Ming(wmshi@issas.ac.cn) |
| 英文摘要 | High rates of fertilizer nitrogen (N) are applied in greenhouse vegetable fields in southeastern China to maximize production; however, the N budgets of such intensive vegetable production remain to be explored. The goal of this study was to determine the annual N balance and loss in a greenhouse vegetable system of annual rotation of tomato, cucumber, and celery at five N (urea) application rates (0, 348, 522, 696, and 870 kg N ha(-1) year(-1)). Total N input to the 0-50 cm soil layer ranged from 531 to 1 053 kg ha(-1), and N fertilizer was the main N source, accounting for 66%-83% of the total annual N input. In comparison, irrigation water, wet deposition, and seeds in total accounted for less than 1% of the total N input. The fertilizer N use efficiency was only 18% under the conventional application rate of 870 kg N ha(-1) and decreased as the application rate increased from 522 to 870 kg N ha(-1). Apparent N losses were 196-201 kg N ha(-1), of which 71%-86% was lost by leaching at the application rates of 522-870 kg N ha(-1). Thus, leaching was the primary N loss pathway at high N application rates and the amount of N leached was proportional to the N applied during the cucumber season. Moreover, dissolved organic N accounted for 10% of the leached N, whereas NH(3) volatilization only contributed 0.1%-0.6% of the apparent N losses under the five N application rates in this greenhouse vegetable system. |
| 收录类别 | SCI |
| WOS关键词 | AMMONIA VOLATILIZATION ; CROPPING SYSTEMS ; UREA ; ACCUMULATION ; GROUNDWATER ; EFFICIENCY ; PLAIN ; FATE |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000293202400006 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558911 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Shi Wei-Ming |
| 作者单位 | Chinese Acad Sci, State Key Lab Soil & Sustainable Agr, Inst Soil Sci, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Min Ju,Zhao Xu,Shi Wei-Ming,et al. Nitrogen Balance and Loss in a Greenhouse Vegetable System in Southeastern China[J]. PEDOSPHERE,2011,21(4):464-472. |
| APA | Min Ju,Zhao Xu,Shi Wei-Ming,Xing Guang-Xi,&Zhu Zhao-Liang.(2011).Nitrogen Balance and Loss in a Greenhouse Vegetable System in Southeastern China.PEDOSPHERE,21(4),464-472. |
| MLA | Min Ju,et al."Nitrogen Balance and Loss in a Greenhouse Vegetable System in Southeastern China".PEDOSPHERE 21.4(2011):464-472. |
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来源：南京土壤研究所
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