Optimizing field management to promote the ecologicalization of agriculture in loess hilly-gully region, China
文献类型：期刊论文
| 作者 | Huang, Yunxin1; Li, Yurui1,3; Liu, Yansui1 |
| 刊名 | JOURNAL OF GEOGRAPHICAL SCIENCES
 |
| 出版日期 | 2023-05-01 |
| 卷号 | 33期号:5页码:1055-1074 |
| 关键词 | field management nitrogen fertilization ecologicalization of agriculture gully agriculture loess hilly-gully region |
| ISSN号 | 1009-637X |
| DOI | 10.1007/s11442-023-2119-5 |
| 文献子类 | Article |
| 英文摘要 | Scientific field management is an important path to realize ecological production and sustainable development of agriculture. As the main content of field management, nitrogen (N) management is the key to balance the economic and ecological benefits of agricultural production. In the loess hilly-gully region, for the fragile ecological and social system, ecologicalization of agricultural production is an important direction to promote sustainable agricultural development. However, irrational fertilization has been one of the main constraint factors, hindering the ecologicalization of local agriculture. In order to solve the problem and prove the practical significance of field management to ecologicalization of agriculture, this study aimed at evaluating the effects of different N fertilization rates and timing using Root Zone Water Quality Model (RZWQM) and then optimizing the N management. Experiments were conducted from 2018 to 2019 in Yangjuangou watershed, loess hilly-gully region, to calibrate and validate the model. The root mean square error (RMSE) of soil water content, nitrate N concentration, above-ground biomass, leaf area index ranged from 10.5-13.5 mm, 2.96-3.80 mg center dot kg(-1), 730.3-1273.9 kg center dot ha(-1) and 0.26-0.38, respectively, with the agreement index (d) between observed and simulated values ranging between 0.88 to 0.98. Simulation results showed that N leaching in semi-arid areas was also quite high due to concentrated rainfall and loose soil, which had previously been neglected. When the fertilization rate decreased by 35% (applying the chemical fertilizer at rate of 245.7 kg N ha(-1)) of typical fertilization (applying the chemical fertilizer at rate of 378.0 kg N ha(-1)), the leaching and residual N decreased by 72.2%-75.4% and 35.6%-50.9%, respectively, while NUE increased by 41.5%-45.2% with no reduction in maize yield. Additionally, compared with applying additional N at seedling stage in one batch, applying at seedling and jointing stages in two batches further decreased N leaching and improved NUE. Thus, a 35% reduction of typical fertilization rate combined with applying additional N at seedling and jointing stages is recommended. From the perspective of N management, this study demonstrated optimizing field management can play a positive role in the ecologicalization of agriculture, and more field management measures should be explored. |
| 学科主题 | Physical Geography |
| WOS关键词 | WATER-USE EFFICIENCY ; FERTILIZATION MANAGEMENT ; CROPPING SYSTEM ; N FERTILIZATION ; NITROGEN ; QUALITY ; YIELD ; MODEL ; RICE ; ROTATION |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/193438]  |
| 专题 | 区域可持续发展分析与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Natl Observat & Res Stn Earth Crit Zone Loess Plat, Xian 710061, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 101408, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Yunxin,Li, Yurui,Liu, Yansui. Optimizing field management to promote the ecologicalization of agriculture in loess hilly-gully region, China[J]. JOURNAL OF GEOGRAPHICAL SCIENCES,2023,33(5):1055-1074. |
| APA | Huang, Yunxin,Li, Yurui,&Liu, Yansui.(2023).Optimizing field management to promote the ecologicalization of agriculture in loess hilly-gully region, China.JOURNAL OF GEOGRAPHICAL SCIENCES,33(5),1055-1074. |
| MLA | Huang, Yunxin,et al."Optimizing field management to promote the ecologicalization of agriculture in loess hilly-gully region, China".JOURNAL OF GEOGRAPHICAL SCIENCES 33.5(2023):1055-1074. |
入库方式： OAI收割
来源：地理科学与资源研究所
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