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Effect of Organic Manure Applied during Preceding Crops on Nitrogen Fertilizer Availability of Flue-cured Tobacco Using the Isotope 15N Trace Technique
Xu Zhaoli, Yang Yuhong
Chinese Agricultural Science Bulletin . 2007, (9): 54 -54 .  DOI: 10.11924/j.issn.1000-6850.0709354