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首页> 外文期刊>International journal of remote sensing >Exploring the applicability of field measurements of mid-infrared reflectance using a portable band-pass filter type radiometer to assess paddy rice yields
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Exploring the applicability of field measurements of mid-infrared reflectance using a portable band-pass filter type radiometer to assess paddy rice yields

机译：探索使用便携式带通滤光片式辐射计评估水稻产量的中红外反射率现场测量的适用性

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摘要

There are few case studies concerning field radiometric measurements in the mid-infrared (MIR) wavelengths for crop plants. This article describes radiometric experiments measuring reflectance in the MIR bands (3.425 ± 0.1 and 3.9 ± 0.1 an) to evaluate the number of panicles (NP, m~2) of ripening paddy rice using a portable band-pass filter type spectroradiometer. First, laboratory experiments were conducted using containers filled with rice grains of various 1000-grain weights and fresh and dry slashed rice culms plus leaf sheaths, leaf blades and panicles. The intensity of light from the sun or electric bulbs reflected from the grains or plant organs was measured in the MIR, visible (VIS), near-infrared (NIR) and short-wave infrared (SIR) bands. Heavier grains and dense panicles reflected less in the MIR bands than lighter grains and the same occurred in the SIR bands. Field measurements were conducted for several plots of ripening rice where the panicles were partly plucked beforehand. The trial showed that the instrumentation and the method for measuring MIR band reflectance factors were usable for investigating the possibility of MIR measurements for NP.
机译：关于农作物的中红外（MIR）波长的现场辐射测量的案例研究很少。本文介绍了使用便携式带通滤波器型光谱辐射计测量中红外波段（3.425±0.1和3.9±0.1 an）的反射率以评估成熟水稻的穗数（NP，m〜2）的辐射实验。首先，使用装有各种1000粒重的米粒，新鲜和干燥的大米切碎的茎秆加上叶鞘，叶片和圆锥花序的容器进行实验室实验。在MIR，可见（VIS），近红外（NIR）和短波红外（SIR）波段中测量了来自太阳或谷物或植物器官反射的电灯泡的光强度。较重的籽粒和密集的穗在MIR波段反射少于较轻的籽粒，而在SIR波段也出现同样的情况。对几个成熟的水稻田进行了田间测量，其中部分穗被预先拔出。该试验表明，用于测量MIR波段反射系数的仪器和方法可用于调查对NP进行MIR测量的可能性。

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  • 来源
    《International journal of remote sensing》 |2011年第14期|p.3589-3609|共21页
  • 作者

    M. SHIBAYAMA; T. SAKAMOTO; A. KIMURA;

  • 作者单位

    National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba,Ibaraki, 305-8604, Japan;

    National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba,Ibaraki, 305-8604, Japan;

    Kimura Oyo-Kogei Inc., 292-4 Takagi, Nishi-ku, Saitama, Saitama, 331-0071, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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