Influence of fertilizers on nitrogen mineralization and utilization in the rhizosphere of wheat
文献类型：期刊论文
| 作者 | Yuan, Ling2,3; Bao, Dejun J.4; Jin, Yan5; Yang, Yuhong H.5; Huang, Jianguo G.1,2 |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2011-06-01 |
| 卷号 | 343期号:1-2页码:187-193 |
| 关键词 | Rhizosphere N mineralization Microorganism Enzyme |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-010-0640-7 |
| 通讯作者 | Huang, Jianguo G.(jianguoh@hotmail.com) |
| 英文摘要 | Plant roots and microorganisms play an important role in the soil N cycle and plant N nutrition through the release of extracellular enzymes. In the present greenhouse pot experiment, wheat (Triticum aestivum) seedlings were grown in a fluvo-aquic soil (Udifluvent) to investigate N mineralization and utilization in the rhizosphere of wheat. The soil received chemical fertilizer ((15)N-labeled urea), chemical fertilizer plus manure (common urea + (15)N-labeled swine manure) or no N. Plant roots were separated from the soil with a nylon cloth, and 1-mm increments of soil moving laterally away from roots were analyzed for N, microbial C, and the activities of invertase, urease and protease. Chemical fertilizer plus manure promoted wheat growth and N absorption significantly compared with chemical fertilizer. (15)N from both chemical fertilizer and swine manure accumulated significantly in the rhizosphere soil within 5 mm of the roots. Fertilized N could thus move easily laterally towards roots and there was no indication that movement through the soil limited plant N supply. A large proportion of fertilizer N was lost from the soil during the wheat growing period, and N utilization efficiency was 24% for chemical fertilizer and 30% for swine manure. In addition, faster rates of N mineralization, larger amounts of microbial C, and increased activities of invertase, urease and protease occurred in the rhizosphere compared with other parts of the soil. There was a significant correlation between microbial C and N mineralization rate (r = 0.968, P < 0.01) in the whole soil. Microbial C also showed significant positive correlations with activities of invertase (r = 0.892, P < 0.01) and protease (r = 0.933, P < 0.01). Further study showed that adding manure into soil increased microbial C and the activities of invertase and protease; adding urea stimulated urease activity in the same soil. Changes in soil enzyme activities in response to N fertilizers could be considered indicators for different fertilizer managements. |
| 收录类别 | SCI |
| WOS关键词 | MICROBIAL BIOMASS-C ; SOIL ; ROOTS ; DIFFUSION ; CORN |
| WOS研究方向 | Agriculture ; Plant Sciences |
| WOS类目 | Agronomy ; Plant Sciences ; Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000290688000013 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558995 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Huang, Jianguo G. |
| 作者单位 | 1.SW China Univ, Coll Nat Resource & Environm, Chongqing 400716, Peoples R China 2.SW China Univ, Coll Resource & Environm, Chongqing 400716, Peoples R China 3.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China 4.Acad Henan Agr Sci, Inst Resource & Environm, Zhengzhou 450000, Peoples R China 5.Tobacco Res Inst, Yuxi 653100, Yunnan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yuan, Ling,Bao, Dejun J.,Jin, Yan,et al. Influence of fertilizers on nitrogen mineralization and utilization in the rhizosphere of wheat[J]. PLANT AND SOIL,2011,343(1-2):187-193. |
| APA | Yuan, Ling,Bao, Dejun J.,Jin, Yan,Yang, Yuhong H.,&Huang, Jianguo G..(2011).Influence of fertilizers on nitrogen mineralization and utilization in the rhizosphere of wheat.PLANT AND SOIL,343(1-2),187-193. |
| MLA | Yuan, Ling,et al."Influence of fertilizers on nitrogen mineralization and utilization in the rhizosphere of wheat".PLANT AND SOIL 343.1-2(2011):187-193. |
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来源：南京土壤研究所
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