基于微张力计的干水潜力与液流量,树冠温度以及灌的"Honeycrisp"果的干水和果子直径变化相关
Victor Blanco1,2, Lee Kalcsits1
1Department of Horticulture, Washington State University, Pullman, WA, United States.
Frontiers in plant science
|June 10, 2024
概括
一个新的微电压计传感器有效地监测果树树干的水潜力 (Ψtrunk). 它的每日范围与收缩和温度相关,显示灌管理的前景.
科学领域:
- 园艺科学 园艺科学
- 植物生理学 植物生理学
- 精准农业 精准农业 精准农业
背景情况:
- 精确的灌管理对于水果作物的产量和质量至关重要.
- 持续监测树木水的状态有助于优化灌策略.
- 基于植物的传感器可以直接测量植物的水状态.
研究的目的:
- 为了评估微电压计监测果树树干水的潜力 (Ψtrunk) 的能力.
- 为了将 Ψtrunk 指标与其他连续树木水状态测量进行比较.
- 评估 Ψtrunk 对灌管理决策的潜力.
主要方法:
- 在"Honeycrisp"果树上安装了微电压计和其他传感器 (液流,温度,直径).
- 收集了 Ψ树干,树液流速 (SF),树冠与空气温度 (Tc-Ta),最大每日收缩 (MDS) 和相对果实生长率 (FRGR) 的连续数据.
- 分析了 Ψtrunk 的每日演变,考虑了黎明前,中午,最小,每日平均值和每日范围的指标.
主要成果:
- 每日 Ψtrunk 的范围与 MDS (R2 = 0.42),Tc-Ta (R2 = 0.32) 和 SF (R2 = 0.30) 显示出强烈的相关性.
- 相对果实生长率 (FRGR) 与最小的 Ψ树干 (R2 = 0.33) 和每日平均 Ψ树干 (R2 = 0.32) 更相关.
- 所有 Ψtrunk指标检测到灌后的水状态变化,显示低变化和高灵敏度.
结论:
- 树干水潜力 (Ψ树干) 是持续监测树木水状况的有希望的指标.
- 需要进一步的研究来完善 Ψtrunk 和其他基于植物的指标之间的关系.
- 优化传感器组合和值可以通过使用 Ψtrunk数据来增强灌管理.
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