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Effects of nitrogen and phosphorus fertilizer rate on hay yield and nutritional quality of alfalfa under drip irrigation
MIAO Xiao-rong, SUN Yan-mei, YU Lei, MA Chun-hui, ZHANG Qian-bing
Acta Prataculturae Sinica . 2019, (9): 55 -66 .  DOI: 10.11686/cyxb2018566