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甘肃省土壤养分丰缺状况及肥效研究进展
崔云玲
Research Progress in Abundance and Deficiency Indicators and fertilization of Soil nutrients in Gansu Provice
中国农学通报 . 2010, (21): 182 -185 .  DOI: 10.11924/j.issn.1000-6850.2010-1065