Abundance and Deficiency Indices of Soil Available K for Wheat and Fertilization Recommendation in Shajiang Black Soil Areas
SUN Ke-gang, LI Bing-qi, HE Ai-ling
ACTA AGRICULTURAE BOREALI-SINICA . 2010, (2): 212 -215 .  DOI: 10.7668/hbnxb.2010.02.042