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Monitoring Leaf Nitrogen Accumulation in Summer Maize with Canopy Reflectance Spectra
李国强 吴士文 郑国清 张学治 冯晓 张杰 胡峰
Chinese Agricultural Science Bulletin . 2014, (3): 85 -90 .  DOI: 10.11924/j.issn.1000-6850.2013-0800