在不同降水模式下,的最佳应用策略:平衡产量,肥使用效率和土壤残留量
Yanbiao Wang1, Yuanbo Jiang1, Haiyan Li1
1College of Water Conservancy and Hydropower Engineering, Gansu Agricultural University, Lanzhou 730070, China.
Plants (Basel, Switzerland)
|January 28, 2026
概括
优化化肥的应用可以提高的产量,减少对环境的影响. 该研究确定了不同天气条件的最佳率,平衡生产与土壤健康.
科学领域:
- 农业科学 农业科学
- 农业学是一种农业学.
- 环境科学 环境科学
背景情况:
- 合理的气应用对于提高营养使用效率和最大限度地减少气漏造成的环境污染至关重要.
- 的生产受益于优化的策略,这也增强了生态优势.
研究的目的:
- 校准和验证APSIM-卢塞恩模型,用于模拟子产量和土壤气动态.
- 探索合理的应用策略,以在各种天气条件下提高的生产和生态效益.
主要方法:
- 实地实验从2021年到2023年进行.
- APSIM-卢塞恩模型经过校准和验证.
- 模拟评估了 (0-240公斤/公) 在产量,土壤残留物 (NO3--N,NH4+-N) 和干旱,正常和潮湿年份的使用效率上的应用水平.
主要成果:
- APSIM-卢塞恩模型准确地模拟了的产量和土壤残留量 (R2: 0.670.91,NRMSE: 6.55%24.03%).
- 增加的应用增加了土壤残留物,但的产量最初增加,然后下降,而使用效率持续下降.
- 与干旱或正常年相比,潮湿年有利于更高的产量,更低的残留量和更高的使用效率.
结论:
- 为了最大限度地提高的产量和效率,最佳的应用值因年种而异:每公107140公斤 (干),每公135160公斤 (正常),每公150183公斤 (湿).
- 这些发现为在种植中制定可持续管理策略提供了关键数据.
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