Stimulated fine root growth benefits maize nutrient uptake under optimized nitrogen management
文献类型：期刊论文
| 作者 | Zeng, X.; Peng, Y. |
| 刊名 | INTERNATIONAL JOURNAL OF PLANT PRODUCTION
 |
| 出版日期 | 2017 |
| 卷号 | 11期号:1页码:89-100 |
| 关键词 | Root length Phosphorous (P) Potassium (K) Leafarea Grain yield Zea mays L |
| ISSN号 | 1735-6814 |
| DOI | 10.1002/ece3.3088 |
| 文献子类 | Article |
| 英文摘要 | Optimized nitrogen (N) management reduces total N application without sacrificing crop yield. However, the underlining mechanisms have not been well investigated, especially lacking the evidence from roots. Here we performed a two-year field experiment with maize grown under zero-N, conventional N and optimized N applications and examined grain yield, N, phosphorous (P) and potassium (K) uptake and root length in diverse diameter classes. Results showed that both conventional N and optimized N managements significantly increased plant nutrient contents and grain yield compared with zero-N treatment, but no obvious difference was observed between the two N-fertilized treatments. Notably, the response of different nutrients to N application was not synchronous temporally over the growth period, following the order of N first, P second and K last. Though N application generally had minor impact on total root length and root biomass, optimized N regime significantly increased fine root (diameter <= 0.2 mm) length compared with conventional N at the eighth leaf emerged stage. The stimulated fine root growth under optimized N management is beneficial for adequate N uptake during the key growth stage, which determines subsequent PK acquisition and final crop yield. Our findings highlight the importance of fine roots in maize NPK uptake and a better understanding of the response of fine roots to changes in N availability may therefore be critical for optimizing N input in maize farming system. |
| 学科主题 | Environmental Sciences & Ecology ; Evolutionary Biology |
| 出版地 | NEW YORK |
| 电子版国际标准刊号 | 1735-8043 |
| WOS关键词 | NITRATE ; YIELD ; WATER ; GRAIN ; PHOSPHORUS ; DYNAMICS ; FIELD |
| 语种 | 英语 |
| WOS记录号 | WOS:000406323100043 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31400417] ; China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2014T70140, 2013M540160] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/22249]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.[Zeng, X.] Chinese Acad Agr Engn, Inst Protected Agr, Beijing 100125, Peoples R China 2.[Peng, Y.] China Agr Univ, Coll Resources & Environm Sci, Ctr Resources Environm & Food Secur, Key Lab Plant Soil Interact,MOE, Beijing 100193, Peoples R China 3.[Peng, Y.] Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng, X.,Peng, Y.. Stimulated fine root growth benefits maize nutrient uptake under optimized nitrogen management[J]. INTERNATIONAL JOURNAL OF PLANT PRODUCTION,2017,11(1):89-100. |
| APA | Zeng, X.,&Peng, Y..(2017).Stimulated fine root growth benefits maize nutrient uptake under optimized nitrogen management.INTERNATIONAL JOURNAL OF PLANT PRODUCTION,11(1),89-100. |
| MLA | Zeng, X.,et al."Stimulated fine root growth benefits maize nutrient uptake under optimized nitrogen management".INTERNATIONAL JOURNAL OF PLANT PRODUCTION 11.1(2017):89-100. |
入库方式： OAI收割
来源：植物研究所
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