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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >Soil Water Sensor Performance and Corrections with Multiple Installation Orientations and Depths under Three Agricultural Irrigation Treatments
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Soil Water Sensor Performance and Corrections with Multiple Installation Orientations and Depths under Three Agricultural Irrigation Treatments

机译：三种农业灌溉条件下多种安装方向和深度的土壤水分传感器性能及校正。

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摘要

Performance evaluations and corrections of soil water sensors have not been studied using different installation orientations under various irrigation treatments in the Texas High Plains. This study evaluated the performance of four sensors using factory calibration and derived field corrections as compared to calibrated neutron moisture meters (NMMs). Sensor performance was assessed using horizontal insertion, laid horizontal placement, and vertical insertion at 15.2, 45.7, and 76.2 cm depths in a clay loam soil with three irrigation treatments. Results indicated the factory-calibrated Acclima 315 L performed satisfactorily using horizontal insertion as compared to NMM measurements at 45.7 and 76.2 cm depths with a ±2% mean difference (MD) and <3.5% root mean square error (RMSE). The factory-calibrated Acclima 315 L using horizontal insertion also performed satisfactorily across all irrigation treatments according to soil profile water storage (MD = 0.36% and RMSE = 3.25%). Generally, the factory-calibrated Decagon GS1 and Campbell Scientific 655 using vertical insertion agreed more closely with NMM measurements compared with other installation orientations. There was a significant underestimation of water storage (>60 mm) in the 0.9 m soil profile using the Watermark 200SS. In summary, field corrections are required for Decagon GS1, Campbell Scientific 655, and Watermark 200SS sensors.
机译：在德克萨斯高平原地区，在各种灌溉处理下，没有使用不同的安装方向来研究土壤水传感器的性能评估和校正。与校准的中子水分仪（NMM）相比，本研究使用工厂校准和派生场校正评估了四个传感器的性能。使用水平灌溉，水平放置和垂直插入在3次灌溉处理的壤土中分别在15.2、45.7和76.2 cm深度处评估传感器性能。结果表明，与NMM在45.7和76.2 cm深度处进行的水平测量相比，使用水平插入的工厂校准的Acclima 315 L性能令人满意，均方差（MD）为±2％，均方根误差（RMSE）<3.5％。根据土壤剖面蓄水量（MD = 0.36％和RMSE = 3.25％），使用水平插入的工厂校准的Acclima 315 L在所有灌溉处理中均表现令人满意。通常，与其他安装方向相比，使用垂直插入进行工厂校准的Decagon GS1和Campbell Scientific 655更符合NMM测量标准。使用Watermark 200SS在0.9 m的土壤剖面中明显低估了储水量（> 60 mm）。总之，Decagon GS1，Campbell Scientific 655和Watermark 200SS传感器需要现场校正。

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