Assessing changes in potential yields and yield gaps of summer maize in the North China Plain
文献类型：期刊论文
| 作者 | Zhang, Zemin2; Lu, Changhe1,4 |
| 刊名 | FOOD AND ENERGY SECURITY
 |
| 出版日期 | 2023-07-11 |
| 页码 | e489 |
| 关键词 | North China Plain potential maize yield WOFOST yield gap |
| ISSN号 | 2048-3694 |
| DOI | 10.1002/fes3.489 |
| 产权排序 | 1 |
| 文献子类 | Article ; Early Access |
| 英文摘要 | In recent years, China's crop production growth rate has decreased. This has provoked questions on whether the grain yields have reached their potential. Taking the North China Plain (NCP) as the study area, this study first simulated the potential yield of an irrigated maize crop with the WOFOST model, using daily weather data for 1960-2017. The yield gap was quantified for 1998-2017, and finally, the total potential maize production was estimated. The results indicate that during 1960-2017, the average potential yield for the region varied annually from 9.5 to 13.5 t ha(-1), showing an obvious downward trend at a rate of 37.6 kg ha(-1) per year. The long-term mean potential yield at all 327 counties ranged from 9.9 to 13.7 t ha(-1), increasing from south to north. The annual maize yield gap was between an average of 2.7-6.0 t ha(-1) (29.0%-51.3%) of the potential yield for the NCP during 1998-2017. At county-level, the yield gap varied between 1.9 and 7.8 t ha(-1) and exceeded 5.0 t ha(-1) for 99 counties (30.3% of all counties). Attainable yields can be increased by 0.1-5.2 t ha(-1) at county-level, and by 2.2 t ha(-1) for the whole NCP, implying that the maize production has the potential to increase with 20.8 Mt. To increase maize production, the focus areas should be the southcentral NCP, which have a larger yield gap during 2012-2017. |
| WOS关键词 | PAST 3 DECADES ; WINTER-WHEAT ; CROPPING SYSTEMS ; CLIMATE ; WATER ; IMPACT ; SIMULATION ; PATTERNS ; INTERPOLATION ; PRODUCTIVITY |
| WOS研究方向 | Agriculture ; Food Science & Technology |
| WOS记录号 | WOS:001026883600001 |
| 出版者 | WILEY |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/194352]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Zemin,Lu, Changhe. Assessing changes in potential yields and yield gaps of summer maize in the North China Plain[J]. FOOD AND ENERGY SECURITY,2023:e489. |
| APA | Zhang, Zemin,&Lu, Changhe.(2023).Assessing changes in potential yields and yield gaps of summer maize in the North China Plain.FOOD AND ENERGY SECURITY,e489. |
| MLA | Zhang, Zemin,et al."Assessing changes in potential yields and yield gaps of summer maize in the North China Plain".FOOD AND ENERGY SECURITY (2023):e489. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。