Abstract : To investigate the relationship between spectral characteristics of
tobacco cultivars and their nitrogen use characters, four tobacco
cultivars with different nitrogen use efficiency were used in a
15N pot experiment. The result showed
that, in the visible light range, the spectral reflectance was lower in
higher nitrogen level (N2) than N1, while opposite in near infrared
range. The spectral reflectance of K326 and HD were lower than ZY100 and
NC89 in visible light range, which closely related to their higher
chlorophyll content. Both the nitrogen utilization rate of basal
fertilizer and topdressing fertilizer in HD and K326 were higher than
that in ZY100 and NC89 under N1 and N2 levels. The basal fertilizer use
efficiency was negatively correlated with ρ550, and significantly positively correlated with
RVI (800, 550), DVI (800, 550) and NDVI (800, 550) both in N1 and N2
level. The top dressed fertilizer use efficiency was significantly
positively correlated with RVI (800, 550), DVI (800, 550) and NDVI (800,
550) in N1 level. Therefore, spectral characteristics can be an
important method for diagnosing tobacco nitrogen metabolism
characteristics.
Daoliang Li; Yingyi Chen. 7th International Conference on Computer and Computing Technologies in Agriculture (CCTA), Sep 2013, Beijing, China. Springer, IFIP Advances in Information and Communication Technology, AICT-420 (Part II), pp.239-246, 2014, Computer and Computing Technologies in Agriculture VII. 〈10.1007/978-3-642-54341-8_25〉
https://hal.inria.fr/hal-01220833
Contributeur : Hal Ifip
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Soumis le : mardi 27 octobre 2015 - 08:26:42
Dernière modification le : mercredi 17 janvier 2018 - 10:45:35
Document(s) archivé(s) le : jeudi 28 janvier 2016 - 10:23:19
Taibo Liang, Jianwei Wang, Yanling Zhang, Jiaqin Xi, Hanping Zhou, et al.. Spectral Characteristics of Tobacco Cultivars with Different Nitrogen Efficiency and Its Relationship with Nitrogen Use. Daoliang Li; Yingyi Chen. 7th International Conference on Computer and Computing Technologies in Agriculture (CCTA), Sep 2013, Beijing, China. Springer, IFIP Advances in Information and Communication Technology, AICT-420 (Part II), pp.239-246, 2014, Computer and Computing Technologies in Agriculture VII. 〈10.1007/978-3-642-54341-8_25〉. 〈hal-01220833〉
