Large-scale exploration of nitrogen utilization efficiency in Asia region for rice crop: Variation patterns and determinants |
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Authors: | Yuming Sun Limin Gao Xusheng Meng Jian Huang Junjie Guo Xuan Zhou Guohai Fu Yang Xu Leslie G. Firbank Min Wang Ning Ling Xumeng Feng Qirong Shen Shiwei Guo |
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Affiliation: | 1. Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-Saving Fertilizers, Nanjing Agricultural University, Nanjing, China;2. National Agro-Tech Extension and Service Center, Beijing, China;3. School of Biology, University of Leeds, Leeds, UK |
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Abstract: | Improving rice nitrogen utilization efficiency (NUtE) is imperative to maximizing future food productivity while minimizing environmental threats, yet knowledge of its variation and the underlying regulatory factors is still lacking. Here, we integrated a dataset with 21,571 data compiled by available data from peer-reviewed literature and a large-scale field survey to address this knowledge gap. The overall results revealed great variations in rice NUtE, which were mainly associated with human activities, climate conditions, and rice variety. Specifically, N supply rate, temperature, and precipitation were the foremost determinants of rice NUtE, and NUtE responses to climatic change differed among rice varieties. Further prediction highlighted the improved rice NUtE with the increasing latitude or longitude. The indica and hybrid rice exhibited higher NUtE in low latitude regions compared to japonica and inbred rice, respectively. Collectively, our results evaluated the primary drivers of rice NUtE variations and predicted the geographic responses of NUtE in different varieties. Linking the global variations in rice NUtE with environmental factors and geographic adaptability provides valuable agronomic and ecological insights into the regulation of rice NUtE. |
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Keywords: | geography N supply rate N utilization efficiency precipitation rice variety temperature |
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