安徽农学通报2026，Vol.32Issue(16)：51-55,5.DOI:10.16377/j.cnki.issn1007-7731.2026.16.014
基于中红外光谱的植烟土壤的光谱特征解析与分类
Spectral characteristic analysis and classification of tobacco-planting soil based on mid-infrared spectroscopy
摘要
Abstract
To investigate the spectral characteristics of tobacco-planting soils in Shilin Yi Autonomous County,Yunnan Province,and their application in soil classification,this study collected 409 topsoil samples from 7 regions within the study area.Mid-infrared(700-4 000 cm-1)attenuated total reflection spectra were measured,and analytical methods including principal component analysis(PCA),hierarchical clustering,and probabilistic neural network(PNN)were employed to explore soil heterogeneity at the county scale.The results showed that the soil spectra exhibited characteristic kaolinite doublets at 3 693 and 3 619 cm-1,while a broad peak at 3 440 cm-1 indicated contributions from organic matter hydroxyl groups.Both PCA and hierarchical clustering confirmed the spatial heterogeneity of soil spectra among the 7 regions,though high similarity in some areas made spectral differentiation challenging.Based on these findings,the 7 regions were consolidated into 4 a priori categories,and a four-class PNN classification model was constructed,achieving an overall recognition accuracy of 88.5%.Collectively,the results demonstrated that mid-infrared spectroscopy can effectively identify spatial heterogeneity characteristics of tobacco-planting soils in the study area and achieve classification with high accuracy,providing a reference for precision management in tobacco production.关键词
植烟土壤/中红外光谱/光谱特征/分类模型Key words
tobacco-planting soil/mid-infrared spectroscopy/spectral characteristics/classification model分类
农业科技引用本文复制引用
杨兴,吕高强,杜昌文,包锐倩,蒋碧霞,贺艳杰,岳蕊,周圣傑,周文瑾,彭建国,桂艺萌..基于中红外光谱的植烟土壤的光谱特征解析与分类[J].安徽农学通报,2026,32(16):51-55,5.基金项目
云南省烟草公司昆明市公司办公室科技计划项目"昆明石林县土壤光谱信息系统的构建与应用"(KMYC202403) （KMYC202403）
云南省作物生产与智慧农业重点实验室开放课题(2024ZHNY03). （2024ZHNY03）
