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首页> 外文会议>2nd IFAC(International Federation of Automatic Control)/CIGR International Workshop on Bio-Robotics, Information Technology and Intelligent Control for Bioproduction Systems 2000, 2nd, Nov 25-26, 2000, Sakai, Osaka, Japan >MOISTURE, SOIL ORGANIC MATTER AND NITRATE NITROGEN CONTENT MAPS USING THE REAL-TIME SOIL SPECTROPHOTOMETER
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MOISTURE, SOIL ORGANIC MATTER AND NITRATE NITROGEN CONTENT MAPS USING THE REAL-TIME SOIL SPECTROPHOTOMETER

机译：实时土壤分光光度法测定水分，土壤有机质和硝态氮含量

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摘要

The soil reflectances, within the wavelength range of 400 to 1700 nm, were collected using the real-time soil spectrophotometer, and investigated for describing the soil parameter variability in the field. Moving average smoothing, Kubelka-Munk transformation and multiple scatter correction were applied to the soil reflectance; and correlation analysis and stepwise multi linear regressions were carried out to the original reflectance, the 1~(st) and the 2~(nd) derivatives. The results indicated that the derivative increased the correlation, and the 2~(nd) derivative gave the best prediction in determination of the soil parameters. The variability distribution maps of soil parameters had been generated by block kriging with the 2~(nd) derivative spectral reflectance.
机译：使用实时土壤分光光度计收集400至1700 nm波长范围内的土壤反射率，并进行研究以描述田间土壤参数的变异性。将移动平均平滑，Kubelka-Munk变换和多次散射校正应用于土壤反射率；对原始反射率，1〜（st）和2〜（nd）导数进行相关分析和逐步多元线性回归。结果表明，导数增加了相关性，而2〜（nd）导数对确定土壤参数提供了最好的预测。利用2阶导数光谱反射率的分块克里金法生成了土壤参数的变异性分布图。

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