The Indices and Parameters of Economical Fertilizer Application for High Yield of Wheat
Li Bingshen, Ding Chunguo, Wang Yingxiao
ACTA AGRICULTURAE BOREALI-SINICA . 1992, (4): 68 -72 .  DOI: 10.3321/j.issn:1000-7091.1992.04.013