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评估高密度果园的水压力,使用树干周长变化,树脂流量指数和树干水潜在的水

William D Wheeler¹, Brent Black², Bruce Bugbee¹

¹Crop Physiology Laboratory, Department of Plants, Soils, and Climate, Utah State University, Logan, UT, United States.

Frontiers in plant science

|August 21, 2023

概括

自动干径测量准确地跟踪果树的水应力,帮助精确的灌. 简化的树液流量指数也显示出与果园的蒸发需求有很强的相关性.

科学领域:

园艺园艺园艺园艺
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:

基于植物的自动化水压力监测对于推进果园精确灌至关重要.
之前的研究已经确定了果树的树脂流,树脂流量计 (LVDT) 和干旱反应之间的联系.

研究的目的:

通过使用带式树计报告全季自动测量每日最大树干直径变化的情况.
使用加热针来测量简化的液液流量指数 (SFI).
评估这些测量与干水潜力和蒸发需求的相关性.

主要方法:

使用带式树计,自动测量每日最大树收缩率 (MDS).
用加热针测量简化液液流量指数 (SFI).
在果树上进行控制的干旱周期,直到茎水潜力 (Ψ_Stem) 下降到-1.5 MPa以下,灌就被扣留了.

主要成果:

每日最大树干收缩 (MDS) 与树干水潜力 (Ψ) 有很高的相关性 (r2 = 0.85).
简化液液流指数 (SFI) 与蒸发需求 (ET_r,r2 = 0.82) 有很高的相关性,但与 Ψ_Stem 的相关性较小.
在生长季节早期,MDS,SFI和 Ψ_Stem之间的相关性更强.

结论:

带式树仪提供了一种不那么劳动密集,不具侵略性的方法来监测树木水的状态,适合商业化.
自动干径测量是果园精确灌管理的一个有前途的工具.
该研究强调了基于植物的自动化传感对于优化农业用水的潜力.

关键词:

富士是一座富士山.石板酸盐是什么石板酸盐是什么带式树枝测量仪 (Dendrometer) 是一个带式树枝测量仪矮化根茎的根茎变小了高密度的高密度的高密度流水流水流的流水流水流是什么干水的潜力干水的潜力水的压力是水压力.

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