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Relationship between the best application of potassium fertilizers on sweet potato and yield on red soil hilly dry land in southern Hunan
刘淑军1,2,黄平娜1,2,黄铁平3,谢卫国3,秦道珠1,2
Chinese Agricultural Science Bulletin . 2010, (6): 178 -181 .  DOI: 10.11924/j.issn.1000-6850.2009-2341