Accurate identification of nitrogen fertilizer application of paddy rice using laser-induced fluorescence combined with support vector machine

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	Accurate identification of nitrogen fertilizer application of paddy rice using laser-induced fluorescence combined with support vector machine
	Yang, J.1; Gong, W.1,2; Shi, S.1,2,3; Du, L.1,4; Sun, J.1; Ma, Y. -Y.1,2; Song, S. -L.5
刊名	PLANT SOIL AND ENVIRONMENT
	2015
卷号	61 期号:11 页码:501-506
关键词	remote sensing macronutrient multivariate analysis chlorophyll content Oryza sativa
英文摘要	To identify accurately the doses of nitrogen (N) fertilizer and improve the photosynthetic efficiency of paddy rice, laser induced fluorescence (LIF) technique combined with the support vector machine (SVM) and principal component analysis (PCA) is proposed in this paper. The LIF technology, in which the ultraviolet light (355 nm) is applied as an excitation light source, is employed to measure fluorescence spectra of paddy rice. These fluorescence spectra demonstrate that the fluorescence spectral characteristics of paddy rice leaves with different doses of N fertilizer have distinct differences from each other. Then, PCA and SVM are implemented to extract the features of fluorescence spectra and to recognize different doses of N fertilizer, respectively. The overall recognition accuracy can reach 95%. The results show that the LIF technology combined with PCA and SVM is a convenient, rapid, and sensitive diagnostic method for detecting N levels of paddy rice. Thus, it will also be convenient for farmers to manage accurately their fertilization strategies.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Agronomy
研究领域[WOS]	Agriculture
关键词[WOS]	CANOPY NITROGEN ; VEGETATION ; PERFORMANCE ; INDEXES ; LIDAR
收录类别	SCI
语种	英语
WOS记录号	WOS:000368249900005
公开日期	2016-03-08
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/9149]
专题	武汉物理与数学研究所_高技术创新与发展中心
作者单位	1.Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan 430079, Peoples R China 2.Collaborat Innovat Ctr Geospatial Technol, Wuhan, Peoples R China 3.Wuhan Univ, China Sch Resource & Environm Sci, Wuhan 430079, Peoples R China 4.Wuhan Univ, Sch Phys & Technol, Wuhan 430079, Peoples R China 5.Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan, Peoples R China
推荐引用方式 GB/T 7714	Yang, J.,Gong, W.,Shi, S.,et al. Accurate identification of nitrogen fertilizer application of paddy rice using laser-induced fluorescence combined with support vector machine[J]. PLANT SOIL AND ENVIRONMENT,2015,61(11):501-506.
APA	Yang, J..,Gong, W..,Shi, S..,Du, L..,Sun, J..,...&Song, S. -L..(2015).Accurate identification of nitrogen fertilizer application of paddy rice using laser-induced fluorescence combined with support vector machine.PLANT SOIL AND ENVIRONMENT,61(11),501-506.
MLA	Yang, J.,et al."Accurate identification of nitrogen fertilizer application of paddy rice using laser-induced fluorescence combined with support vector machine".PLANT SOIL AND ENVIRONMENT 61.11(2015):501-506.