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Combining active optical sensors, infrared thermometers and ultrasonic height sensors for proximal sensing in irrigated cotton

机译:结合有源光学传感器,红外温度计和超声波高度传感器,用于灌溉棉中的近端感测

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Active optical sensors (AOS) have been widely tested to assess nitrogen (N) status and biomass in crops like cotton (Gossypium hirsutum). Fewer studies have added infrared thermometers (IRTs) to assess canopy temperature and ultrasonic sensors to estimate height. The objective of these studies was to examine relationships among canopy reflectance, canopy temperature and plant height in irrigated cotton as affected by N fertilizer and spatial variation in soil texture. Normalized difference vegetationindex (NDVI) was positively correlated (r>0.70) with plant height, and negatively related to canopy temperature and soil sand content. Information from multiple sensors can assist management of cotton better than NDVI alone.
机译:已广泛测试有源光学传感器(AOS)以评估棉花(Gossypium hirsutum)等作物中的氮气(n)状态和生物量。更少的研究已经增加了红外温度计(IRTS)来评估冠层温度和超声波传感器以估计高度。这些研究的目的是在灌溉棉花的影响下,在灌溉棉花的影响和土壤纹理中的空间变化中检查灌溉棉花冠层反射率,冠层温度和植物高度的关系。归一化差异植物植物(NDVI)与植物高度呈正相关(R> 0.70),与冠层温度和土壤砂含量负相关。来自多个传感器的信息可以单独提供比NDVI更好的棉花。

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