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Effects of NH4+-N/ NO3--N ratios on Yield and Soluble Oxalate Content of Spinach (Spinacia oleracea L.)
Zhang Guoyi, Wang Jianfei, Xing Suzhi, Zhao Jianrong
Chinese Agricultural Science Bulletin . 2007, (9): 58 -58 .  DOI: 10.11924/j.issn.1000-6850.0709358