Linkages of soil and microbial stoichiometry to crop nitrogen use efficiency: Evidence from a long-term nitrogen addition experiment
文献类型：期刊论文
| 作者 | Gong, Huarui4,5; Li, Jing3,5; Liu, Zhen4,5; Hou, Ruixing3,5; Zhang, Yitao3,5; Xu, Yan1,5; Zhu, Wanxue2; Yang, Linsheng1,5; Ouyang, Zhu1,4,5 |
| 刊名 | CATENA
 |
| 出版日期 | 2024-05-01 |
| 卷号 | 240页码:107961 |
| 关键词 | Nitrogen fertilizer application Stoichiometric imbalance Eco-enzymatic stoichiometry Phospholipid fatty acid Nitrogen use efficiency |
| DOI | 10.1016/j.catena.2024.107961 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Increasing crop nitrogen use efficiency (NUE) has important implications for food security and agricultural sustainability. Changes in nutrient availability due to stoichiometric imbalances in soil under long-term application of nitrogen (N) can limit crop NUE and yield. However, little is known about the linkages across stoichiometric balance, N fertilizer application, and N uptake. We investigated the changes in soil stoichiometry, microbial community, and crop NUE relative to N fertilizer application in a 16-year field experiment in which five levels (0, 70, 140, 210 and 280 kg N ha-1) of mineral N fertilizer treatment were applied to wheat and maize cropland. The results showed that the P storage decreased from 4.3 Mg P ha-1 under the fertilizer dose of 0 kg N ha-1 to 3.5 Mg P ha-1 under the fertilizer dose of 280 kg N ha-1. Thus, long-term N application increased soil C/P and N/P ratios, in a marked decrease in the content of soil available P. The microbial community based on phospholipid fatty acids (PLFAs) increased with increasing N addition rates, from 0 to 140 kg N ha-1, but significantly decreased at application rates above 210 kg N ha-1. Thus, applying N at a rate of 140 kg ha-1 resulted in the N threshold rate for microorganism survival being reached or exceeded. The crop NUE peak occurred at the urea application rate of 140 kg N ha-1 (60.4 %), after which NUE declined. The soil elementary and enzymatic stoichiometric ratios under long-term N addition directly affected crop NUE in the topsoil. Soil elementary stoichiometric ratios affected crop NUE by indirectly altering microbial biomass of the subsoil. Overall, soil stoichiometric imbalances under long-term N addition were the key factors driving NUE across N gradients. |
| WOS关键词 | ORGANIC-MATTER ; COMMUNITY COMPOSITION ; TERRESTRIAL ECOSYSTEMS ; LITTER DECOMPOSITION ; ENZYME-ACTIVITY ; CARBON ; LIMITATION ; RESPONSES ; BIOMASS ; FERTILIZERS |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| WOS记录号 | WOS:001218422300001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/205184]  |
| 专题 | 禹城站农业生态系统研究中心_外文论文 |
| 通讯作者 | Li, Jing |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Univ Gottingen, Dept Crop Sci, D-37075 Gottingen, Germany 3.Chinese Acad Sci, Yucheng Comprehens Expt Stn, Beijing 100101, Peoples R China 4.Chinese Acad Sci, Yellow River Delta Modern Agr Engn Lab, Beijing 100101, Peoples R China 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gong, Huarui,Li, Jing,Liu, Zhen,et al. Linkages of soil and microbial stoichiometry to crop nitrogen use efficiency: Evidence from a long-term nitrogen addition experiment[J]. CATENA,2024,240:107961. |
| APA | Gong, Huarui.,Li, Jing.,Liu, Zhen.,Hou, Ruixing.,Zhang, Yitao.,...&Ouyang, Zhu.(2024).Linkages of soil and microbial stoichiometry to crop nitrogen use efficiency: Evidence from a long-term nitrogen addition experiment.CATENA,240,107961. |
| MLA | Gong, Huarui,et al."Linkages of soil and microbial stoichiometry to crop nitrogen use efficiency: Evidence from a long-term nitrogen addition experiment".CATENA 240(2024):107961. |
入库方式： OAI收割
来源：地理科学与资源研究所
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