Determination of Soil Quality from Chinese Apple Plant Area by NIR Spectroscopy
DONG Yi-wei, HUANG Jin-li, SUN Bao-li, BAI Wei, FAN Zhong-nan, WANG Ya-nan, LIU Ya-wei, TONG Cheng-feng*
Institute of Environment and Sustainable Development in Agriculture, the Chinese Academy of Agricultural Science, the Key Laboratory of Agro-Environment & Climate Change,the Ministry of Agriculture, Beijing 100081, China
Abstract：In the present work, 111 soil samples from 11 different Chinese apple plant areas were used to take the diffuse reflection spectra from 12 500 to 4 000 cm-1 by FT-NIR. The models of organic substance and pH value of soil samples were built by using partial least square regression (PLSR). The calibration model gave the correlation coefficients of 0.818 and 0.836 for the two values respectively, with the root mean square error of prediction (RMSEP) of 0.377 (%) and 0.251, respectively. In order to improve the robustness and performance of calibration, several spectra preprocessing methods were employed, including standard normalized variate (SNV), multiplicative scatter correction (MSC) and direct orthogonal signal correction (DOSC). Finally, the performance of DOSC was found to be the best for organic substance and pH value with RMSEP of 0.258(%) and 0.248, respectively. The results showed that the technology of NIR spectroscopy was useful to nondestructive determination of the organic substance and pH value of soil. These research findings provide theoretic base for fertilization and pomiculture by means of NIR diffuse reflection.
董一威，黄金丽，孙宝利，白 薇，范中南，王亚男，刘亚伟，仝乘风* . 我国苹果栽培区土壤参数的近红外光谱检测研究[J]. 光谱学与光谱分析, 2009, 29(08): 2075-2078.
DONG Yi-wei, HUANG Jin-li, SUN Bao-li, BAI Wei, FAN Zhong-nan, WANG Ya-nan, LIU Ya-wei, TONG Cheng-feng*. Determination of Soil Quality from Chinese Apple Plant Area by NIR Spectroscopy . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(08): 2075-2078.
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