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Effects of Tillage Managements in Wheat-maize Whole Season on the Soil Nitrogen and Potassium in Summer Maize
刘淑梅 宋希云 张洪生 姜雯
Chinese Agricultural Science Bulletin . 2014, (6): 198 -202 .  DOI: 10.11924/j.issn.1000-6850.2013-1231