一个用于作物和土壤水相互作用的动态模型的土壤水指标
Edwin Duque-Marín1, Alejandro Rojas-Palma1,2, Marcos Carrasco-Benavides1,3
1Doctorado en Modelamiento Matemático Aplicado, Facultad de Ciencias Básicas, Universidad Católica del Maule, Talca 3460000, Chile.
Mathematical biosciences and engineering : MBE
|September 7, 2023
概括
这项研究引入了土壤含水量的新理论指标,这对于管理农业水资源短缺至关重要. 它有助于确定作物所需的最低土壤水量,有助于更好地管理水资源.
科学领域:
- 农业科学 农业科学
- 水文学的水文学
- 土壤科学 土壤科学
背景情况:
- 缺水对全球农业构成重大挑战,需要可靠的方法来确定土壤含水量.
- 在农业中有效的水资源管理对于确保作物产量和可持续性至关重要.
研究的目的:
- 开发一个新的,理论的,非生理学指标,用于土壤含水量.
- 在不同的灌场景下确定土壤中适用于作物生长的最低可行的含水量.
- 模拟水-土壤-作物动态和在缺水条件下的植物条件.
主要方法:
- 将下一代矩阵方法应用于二维,非线性动态系统.
- 分析局部稳定性,纳入水土作物动态参数.
- 使用果园和番茄作物的现场数据进行校准和验证.
主要成果:
- 建立了一个标准,以确定土壤的最低可行的水含量随时间推移.
- 该理论模型在预测水资源稀缺的植物条件方面表现出优势.
- 该模型通过独立的现场数据成功校准和验证.
结论:
- 提出的理论指标为建模植物对水资源短缺的反应提供了有价值的第一步.
- 该研究强调了理论方法优化农业用水管理的潜力.
- 未来的研究应纳入影响土壤含水量的其他因素,以提高模型的准确性.
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