在干旱地区使用AquaCrop模型进行滴灌灌下土豆 (Solanum tuberosum L.) 的灌计划
Juan Yin1,2,3,4, Yingpan Yang1, Rasu Eeswaran4,5
1School of Civil and Water Engineering, Ningxia University, Yinchuan, Ningxia, China.
Frontiers in plant science
|October 20, 2023
概括
优化滴灌对于干旱地区的土豆种植至关重要. 这项研究发现,每7天20毫米的最佳时间表 (1800 m3 ha-1) 可以最大限度地提高土豆产量和用水效率.
科学领域:
- 农业科学 农业科学
- 农业学是一种农业学.
- 水资源管理 水资源管理
背景情况:
- 马是全球重要的粮食作物,中国是最大的生产国.
- 中国宁夏等干旱地区的水资源短缺严重限制了土豆的生产力.
- 在这些缺水地区,滴水灌广泛用于土豆种植.
研究的目的:
- 优化灌策略,在干旱环境下在滴灌下种植土豆.
- 确定最有效的灌计划,以最大限度地提高土豆产量和利用水的效率.
- 评估AquaCrop模型在不同灌模式下模拟土豆生长和产量的适用性.
主要方法:
- 使用两年的实地实验数据校准和验证了AquaCrop模型.
- 在30个不同的灌方案和两个场景下,模拟了土豆生长和结核产量.
- 使用RMSE,d,NRMSE和R指标评估模型性能.
主要成果:
- 在滴灌灌下,AquaCrop模型准确地模拟了土豆的生长和产量.
- 马产量随着总灌增加到2500 m3 ha-1 ,然后下降.
- 确定的最佳灌计划是每7天20毫米 (1800 m3 ha-1总灌).
- 这种最佳计划的结果是,茎产量为46.77t ha-1和用水效率为15.74kg m-3.
结论:
- 在干旱地区,AquaCrop模型是优化土豆灌的可靠工具.
- 具体的灌计划 (每7天20毫米) 显著提高了土豆产量和用水效率.
- 这些发现为全球水资源稀缺的干旱环境中可持续的土豆生产提供了宝贵的见解.
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