| 光谱学与光谱分析 |
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| Real-Time Analysis of Soil Moisture, Soil Organic Matter, and Soil Total Nitrogen with NIR Spectra |
| SUN Jian-ying1,LI Min-zan1*,ZHENG Li-hua1,HU Yong-guang1, 2,ZHANG Xi-jie1 |
1. Key Laboratory of MOE on Modern Precision Agriculture System Integration Research, China Agricultural University, Beijing 100083, China
2. School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China |
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Abstract The grey-brown alluvial soil in northern china was selected as research object, and the feasibility and possibility of real-time analyzing soil parameter with NIR spectroscopic techniques were explored. One hundred fifty samples were collected from a winter wheat farm. NIR absorbance spectra were rapidly measured under their original conditions by a Nicolet Antaris FT-NIR analyzer. Three soil parameters, namely soil moisture, SOM (soil organic mater) and TN (total nitrogen) content, were analyzed. For soil moisture content, a linear regression model was available, using 1 920 nm wavelength with correlation coefficient of 0.937, so that the results obtained could be directly used to real-time evaluate soil moisture. SOM content and TN content were estimated with a multiple linear regression model, 1 870 and 1 378 nm wavelengths were selected in the SOM estimate model, and 2 262 and 1 888 nm wavelengths were selected in the TN estimate model. The results showed that soil SOM and TN contents can be evaluated by using NIR absorbance spectra of soil samples.
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Received: 2005-03-03
Accepted: 2005-06-17
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Corresponding Authors:
LI Min-zan
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| Cite this article: |
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SUN Jian-ying,LI Min-zan,ZHENG Li-hua, et al. Real-Time Analysis of Soil Moisture, Soil Organic Matter, and Soil Total Nitrogen with NIR Spectra [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(03): 426-429.
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https://www.gpxygpfx.com/EN/Y2006/V26/I03/426 |
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