在灌制度下对豆类作物进行AquaCrop模型的校准,测试和应用
Wenderson Nonato Ferreira da Conceição1, Rogério Teixeira de Faria1, Anderson Prates Coelho2
1School of Agricultural and Veterinary Sciences, São Paulo State University (Unesp), Via de Acesso Prof. Paulo Donato Castellane, S/N, São Paulo, Jaboticabal, CEP 14884-900, Brazil.
International journal of biometeorology
|May 13, 2024
概括
这项研究对AquaCrop模型对常见豆生长进行了校准,发现它在模拟水的可用性方面有效,但在热和水应力相结合的情况下不那么准确. 推的灌策略优化了产量和水的生产力.
科学领域:
- 农业科学 农业科学
- 作物建模作物建模
- 水资源管理 水资源管理
背景情况:
- 作物生长模拟模型对于优化灌策略至关重要.
- 了解土壤-水-植物-大气相互作用是估计作物发展和产量的关键.
- AquaCrop模型是一种广泛使用的工具,用于模拟各种环境条件下的作物生长.
研究的目的:
- 为了校准普通豆种类的作物系数 (IAPAR 57).
- 在不同的灌制度和播种日期下评估AquaCrop模型的模拟准确性.
- 确定最佳的灌策略,以提高作物产量和水生产率.
主要方法:
- 对普通豆的作物系数的校准 (IAPAR 57).
- 使用AquaCrop模型在三种灌模式下 (非灌,完全灌,赤字灌) 模拟作物生长.
- 对三个不同的播种日期 (3月21日,4月24日,8月23日) 的模型性能评估.
主要成果:
- 对于具有最佳温度的作物季节 (播种日期为3月21日和8月23日) 实现了成功的模型校准.
- 当与水应激相结合时,AquaCrop模型在低于最佳温度时期 (4月24日播种日期) 过高估计了作物生长和产量.
- 长期模拟准确地反映了受降水变化影响的作物用水供应情况.
结论:
- 对于模拟作物生产,AquaCrop模型显得有前途,特别是在水资源有限的环境中.
- 需要在模型计算热和水应力效应的计算方面进行改进.
- 推的灌策略建议在特定的可用水耗尽点灌,以最大限度地提高产量和水生产率.
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