Preliminary study on spectra diagnosis model for nitrogen nutrition in rice leaf

Preliminary study on spectra diagnosis model for nitrogen nutrition in rice leaf

[Objective] The aim was to build spectral diagnosis model for nitrogen nutrition in rice leaf. [Method] Through determination of transmission, absorption spectra and nitrogen content on rice leaves of different rice varieties (Xiangyou 109 and Shanyou 98), different growth periods and different nitr...

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Veröffentlicht in:Hunan agricultural science & technology newsletter : HASTN 2011-02, Vol.12 (2)
Hauptverfasser: Li Xiaoli, Guizhou University, Guiyang（China），College of Science, Liu Mingbo, Guizhou University, Guiyang（China），College of Science, Lou Jia, Guizhou University, Guiyang（China），College of Science
Format: Artikel
Sprache:eng
Schlagworte:
ARROZ
AZOTE
FEUILLE
HOJAS
http://www.fao.org/aos/agrovoc#c_4243
http://www.fao.org/aos/agrovoc#c_5192
http://www.fao.org/aos/agrovoc#c_6599
LEAVES
NITROGEN
NITROGENO
RICE
RIZ
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Zusammenfassung:[Objective] The aim was to build spectral diagnosis model for nitrogen nutrition in rice leaf. [Method] Through determination of transmission, absorption spectra and nitrogen content on rice leaves of different rice varieties (Xiangyou 109 and Shanyou 98), different growth periods and different nitrogen levels, we analyzed the correlation between leaf spectra and their nitrogen contents, and built prediction model of spectral index for nitrogen content in rice leaf. [Result] The detection precision of this model was above 80% that can be used on diagnosing of rice nitrogen nutrition. [Conclusion] The study provided evidence for monitoring nitrogen nutrition status of rice.
ISSN:1009-4229