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小麦、夏玉米两茬轮作耕作措施对土壤氮、钾养分及玉米产量的影响
刘淑梅 宋希云 张洪生 姜雯
Effects of Tillage Managements in Wheat-maize Whole Season on the Soil Nitrogen and Potassium in Summer Maize
中国农学通报 . 2014, (6): 198 -202 .  DOI: 10.11924/j.issn.1000-6850.2013-1231