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一种远程传感方法来评估每日累积的蒸发透气在小麦基因型查中不可或缺的干旱适应性

David Gómez-Candón¹, Joaquim Bellvert¹, Ana Pelechá¹

¹Efficient Use of Water in Agriculture Program, Institute of Agrifood Research and Technology (IRTA), Fruitcentre, Parc AgroBiotech, 25003 Lleida, Spain.

Plants (Basel, Switzerland)

|November 25, 2023

概括

优化小麦产量需要了解用水. 这项研究揭示了农作物产量的用水门,并确定了水资源稀缺地区的高水生产率的小麦品种.

科学领域:

农业科学农业科学
农业学是一种农业学.
植物育种植物育种

背景情况:

准确估计实际蒸发转化率 (ETa) 对于小麦种植的水资源管理至关重要.
传统的ETA模型提供有限的时间分辨率,阻碍了综合用水分析.
开发资源高效的作物品种对于可持续农业至关重要,尤其是在水资源有限的环境中.

研究的目的:

调查每日累积实际蒸发透气 (ETa) 与小麦作物生产率之间的关系.
在不同的水供应条件下,评估不同小麦品种的水生产率.
确定培育节水小麦品种的机会.

主要方法:

实地试验22种小麦品种在两年的灌和雨水条件下进行.
利用遥感 (UAV-RGB) 和多重回归来预测叶面积指数 (R2=0.85).
集成遥感与能量平衡模型,用于每天累积的ETA估计.

主要成果:

在作物产量和Eta之间观察到一种积极的非对称关系,表明产量高原超出了一定水应用值.
遗传分析显示,Eta和产量之间没有直接的相关性,这表明水效率的选择潜力.
在小麦品种之间发现了水生产率的显著差异.

结论:

在特定的蒸发转化值之后,小麦产量的增加显著减少.
育种计划可以选择节水的小麦品种,而不会影响产量潜力.
这些发现支持开发优化适用于缺水环境的农业实践和作物品种.

关键词:

在TSEB模型中,TSEB模型是:蒸发透气是指蒸发透气.叶面积指数叶面积指数无人驾驶飞行器是一种无人驾驶飞行器.水的生产力水的生产力.

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