为可持续的土豆灌采用AquaCrop模型:产量与作物水生产率之间的权衡
Abraham Rai1, Nawab Ali1, Younsuk Dong1
1Biosystems and Agricultural Engineering, Michigan State University, East Lansing, MI, United States.
Frontiers in plant science
|August 27, 2025
概括
使用AquaCrop模型优化土豆灌显示,40%-60%的田间灌能力平衡了产量和水生产率. 这种方法在各种天气条件和土壤类型中有效提高作物管理.
科学领域:
- 农业科学
- 植物生理学
- 水资源管理
背景情况:
- 马产量和作物水生产率 (WP_C) 是受水供应影响的.
- 精确灌对于在不同气候条件下优化土豆生产至关重要.
研究的目的:
- 校准和验证 AquaCrop 的土豆生长模型.
- 模拟和分析不同灌场景对土壤类型和气候条件的土豆产量和WP_C的影响.
- 确定最佳的灌策略,以最大限度地提高土豆产量和用水效率.
主要方法:
- 使用SoilWatch 10湿度传感器对AquaCrop模型进行了校准和验证.
- 在不同降雨模式下 (2014-2024年) 进行模拟.
- 在不同灌水平 (20% - 90% FC) 下,权衡分析评估了产量与WP_C之间的关系.
主要成果:
- AquaCrop模型准确地模拟了土豆产量 (±10%) 和土壤含水量 (IA和NSE接近1).
- 在所有模拟年份和土壤类型中,用40%-60%的田间容量灌显示出"双赢"的情况,提高了产量和WP_C.
- 关键的灌时期是在中端到后端的灌阶段.
结论:
- AquaCrop模型是优化土豆种植灌策略的可行工具.
- 特别是在关键的芽发育阶段,以40%-60%的灌为目标,最大限度地提高了土豆的产量和水的生产力.
- 有效的灌管理对于保证土豆作物在气候变化中的适应性和生产力至关重要.
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