Dynamics of crop yields and soil organic carbon in a long-term fertilization experiment in the Huang-Huai-Hai Plain of China
文献类型：期刊论文
| 作者 | Cai, Z. C.; Qin, S. W. |
| 刊名 | GEODERMA
 |
| 出版日期 | 2006-12-15 |
| 卷号 | 136期号:3-4页码:708-715 |
| 关键词 | balanced fertilization long-term experiment carbon sequestration food security |
| ISSN号 | 0016-7061 |
| DOI | 10.1016/j.geoderma.2006.05.008 |
| 通讯作者 | Cai, Z. C.(zccai@issas.ac.cn) |
| 英文摘要 | We analyzed the dynamics of crop yields and soil organic carbon content (SOC) in a long-term fertilization experiment carried out in the Huang-Huai-Hai Plain of China. The experiment with crop rotation of winter wheat and summer maize started in 1990 and had seven treatments receiving N, P, and K at the same rates if it was applied. The treatments were inorganic fertilization (NPK, NP, PK, NK), organic fertilization (ON), half amount of N from inorganic fertilizer and another half from compost (1/2ON), and no fertilization as control (CK). On average, over 14 years (1990-2003), both wheat and maize yields were the highest and most stable in the NPK treatment. Average wheat and maize yields were 23.7% and 18.0% lower in ON, respectively, and slightly but significantly lower (1.9% and 1.5%, respectively) in 1/2ON than those in NPK. Unbalanced inorganic fertilization without K (NP) was not sustainable for achieving high yields. There was a significant logarithmic relationship between roots and compost input and SOC content in 0-20 cm in 2003. Over the time of the study SOC storage in 0-20 cm increased by 12.2 Mg C ha(-1) in ON, 7.8 Mg C ha(-1) in 1/2ON, and 3.7 Mg C ha(-1) in NPK, and decreased by 1.6 Mg C ha(-1) in NK and 1.4 Mg C ha(-1) in CK. Measured dynamics of SOC and model simulation predictions showed that the SOC in NPK, ON and 1/2ON almost reached equilibrium in 2003. These results indicate that although the balanced application of chemical fertilizers of N, P, and K maintains the crop production in the region, it is not an ideal practice from the point view of carbon sequestration in soil. Application of compost alone has a reverse effect on crop yields and carbon sequestration in soil. Therefore, mixed application of organic and inorganic fertilizers is a compromise between food security and soil carbon sequestration in the region. (c) 2006 Elsevier B.V All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | BROADBALK WHEAT EXPERIMENT ; NITROGEN-FERTILIZER ; SEQUESTRATION ; PRODUCTIVITY ; MANAGEMENT ; MATTER ; REGION ; MANURE ; ROTHC |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000243080400021 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558537 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Cai, Z. C. |
| 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 | Cai, Z. C.,Qin, S. W.. Dynamics of crop yields and soil organic carbon in a long-term fertilization experiment in the Huang-Huai-Hai Plain of China[J]. GEODERMA,2006,136(3-4):708-715. |
| APA | Cai, Z. C.,&Qin, S. W..(2006).Dynamics of crop yields and soil organic carbon in a long-term fertilization experiment in the Huang-Huai-Hai Plain of China.GEODERMA,136(3-4),708-715. |
| MLA | Cai, Z. C.,et al."Dynamics of crop yields and soil organic carbon in a long-term fertilization experiment in the Huang-Huai-Hai Plain of China".GEODERMA 136.3-4(2006):708-715. |
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来源：南京土壤研究所
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