关于优化边缘土壤中大麦水和管理的建模研究
Renaldas Žydelis1,2, Rafaella Chiarella3, Lutz Weihermüller3
1Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, 58344 Kėdainiai, Lithuania.
Plants (Basel, Switzerland)
|March 17, 2025
概括
在边缘土壤上最大限度地提高大麦产量需要平衡水和 (N) 的可用性. 即使采用最佳的肥,水压也会显著降低作物产量,这凸显了综合管理策略的必要性.
科学领域:
- 农业科学 农业科学
- 农业学是一种农业学.
- 土壤科学 土壤科学
背景情况:
- 水和是限制作物生产的关键投入,特别是在边缘土地上.
- 边缘性土壤对由于资源限制而实现最佳作物产量提出了独特的挑战.
研究的目的:
- 评估水和应激对边缘土壤春季大麦产量的影响.
- 使用AgroC模型模拟大麦生长并识别产量差距.
主要方法:
- 实地试验于2020-2022年在立陶宛与春季大麦 (cv. KWS Fantex) 的使用情况.
- AgroC模型使用实验数据进行参数化,以模拟不同水和条件下的作物生长.
- 通过模拟评估了由于非生物压力的收益潜力和损失.
主要成果:
- 在最佳条件下,潜在产量在4.8至6.02t DW ha-1之间.
- 产量损失达到了54.4%的应力和59.2%的水应力,即使有100公斤N ha-1yr-1.1.
- 最佳的肥率 (100-120公斤Nha-1yr-1) 随着气候条件的变化而变化,引入了不确定性.
结论:
- 可持续的农业实践和先进的建模对于提高边缘土壤的产量潜力和弹性至关重要.
- 整合遥感数据可以提高仿真准确性,并为受精策略提供信息.
- 优化水和管理对于改善边缘土地上大麦生产至关重要.
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