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土壤水分和施氮水平对紫花苜蓿苗期生长的互作效应分析
王茜, 纪树仁, 沈益新
Interactive effects of soil moisture and nitrogen application rate on seedling growth of alfalfa
WANG Qian, JI Shu-Ren, SHEN Yi-Xin
草业学报 . 2017, (12): 48 -55 .  DOI: 10.11686/cyxb2017079