Optimized nitrogen and zinc fertilization boosts yield and quality in sugar beet cultivation in Northeast China by reducing nitrogen losses and enhancing photosynthetic efficiency
Copyright © 2025. Published by Elsevier Masson SAS.
| Veröffentlicht in: | Plant physiology and biochemistry : PPB. - 1991. - 229(2025), Pt C vom: 24. Sept., Seite 110520 |
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| 1. Verfasser: | |
| Weitere Verfasser: | , , , , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2025
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| Zugriff auf das übergeordnete Werk: | Plant physiology and biochemistry : PPB |
| Schlagworte: | Journal Article Beta vulgaris L. Chlorophyll fluorescence Eco-efficiency Nitrogen loss Nitrogen use efficiency |
| Zusammenfassung: | Copyright © 2025. Published by Elsevier Masson SAS. Excessive nitrogen (N) fertilizer input and insufficient zinc (Zn) fertilizer application are widespread in China's sugar beet production. These practices limit yield, contribute to resource waste, and cause environmental pollution. Optimizing N and Zn fertilization can promote sugar beet growth. However, the regulatory mechanisms of optimized N and Zn fertilization on photosynthetic characteristics of sugar beet remains unclear. Here, field experiments with three replications of each treatment were conducted in Northeast China (Harbin and Shuangyashan) from 2020 to 2021, comparing conventional fertilization (CF), optimized N and Zn fertilization treatments (OPT), and corresponding no-N treatments (CF-N, OPT-N). The results indicated that OPT significantly improved the photosynthetic rate (Pn) by 8.28%, transpiration rate (Tr) by 9.31%, maximum photochemical efficiency of PSII (Fv/Fm) by 25.04 %, potential photochemical activity of PSII (Fv/Fo) by 8.07%, and light energy absorption per unit reaction center (ABS/RC) by 13.01% in beet leaves. This resulted in a two-year average yield increase of 10.18% and 5.69% in Harbin and Shuangyashan, respectively. Moreover, in Harbin and Shuangyashan, OPT markedly increased the average sucrose content in sugar beet roots by 7.03% and refined sugar content by 7.31%, while decreasing amino N by 21.10% and Na content by 7.93%. OPT reduced total N loss by 16.48% and improved NUE by 20.76%, contributing to increased economic (6.43%), social (28.72%), and ecological (25.15%) benefits. In summary, optimizing N and Zn fertilization practices is an effective way to achieve stable and increased sugar beet yields, improve quality and efficiency, and reduce N losses in Northeast China. This study shows promise in improving planting efficiency, ecological sustainability, and promoting sustainable agricultural production |
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| Beschreibung: | Date Revised 13.10.2025 published: Print-Electronic Citation Status Publisher |
| ISSN: | 1873-2690 |
| DOI: | 10.1016/j.plaphy.2025.110520 |