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Preliminary Study Recommend Top dressed Nitrogen Quantity Based on Chlorophyll SPAD of Rice in Different Growth Stage
陈晓群1,张学军1,白建忠2,郝中华3,李广成4,冒海军5
Chinese Agricultural Science Bulletin . 2010, (7): 147 -151 .  DOI: 10.11924/j.issn.1000-6850.2009-2491