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Effects of Nitrogen, Phosphorus and Potassium Application by Stages on Yield and Quality of sweetpotato
王小晶 蔡国学 王 洋 吕慧峰 陈 怡 王正银
Chinese Agricultural Science Bulletin . 2011, (7): 188 -192 .  DOI: 10.11924/j.issn.1000-6850.2010-2360