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Abundance and Deficiency Indices of Soil Available P for Maize and fertilization recommendation in Shajiang Black Soil AreasIndices of soil Available P Based on ASI Method
孙克刚 李丙奇 李潮海 刘京宝 和爱玲
Chinese Agricultural Science Bulletin . 2010, (21): 167 -171 .  DOI: 10.11924/j.issn.1000-6850.2010-1068