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近红外光谱是利用漫反射来分析物质的某些化学性质,已在农业及其他许多领域得到广泛应用。尽管在实验室条件下,研究证明可以应用近红外光谱分析技术来快速、方便地测定土壤参数,但在田间大范围内应用红外光谱快速测定来分析土壤性质,仍然缺乏研究;该研究以田间行走式设备获取的红外光谱数据为基础,分析和比较了不同数据处理技术下红外光谱信息与土壤质地之间的相关性,发现应用基于算术运算的波段组合技术可以明显地提高红外光谱信息与土壤质地之间的相关性,为田间光谱数据的分析处理与应用提供了依据。
Near infrared spectroscopy is the use of diffuse reflection to analyze certain chemical substances, has been widely used in agriculture and many other fields. Although laboratory studies have shown that near-infrared spectroscopy can be used to quickly and easily determine soil parameters, the rapid determination of soil properties using infrared spectroscopy has not been well studied in the field. In this study, field walking Based on the infrared spectroscopy data acquired by the infrared spectrometer, the correlation between the infrared spectral information and the soil texture under different data processing technologies was analyzed and compared. It was found that the application of the band combining technology based on the arithmetic operation can obviously improve the relationship between the infrared spectrum information and the soil texture The correlation between the data provided the basis for the analysis and application of field spectral data.