Effects of Potassium on Yield and Quality in Lettuce
WU Wen-qiang, HE Jian-de, QU Ming-shan, LIU Bin, CUI Liang-man, SHI Wen-xue
ACTA AGRICULTURAE BOREALI-SINICA . 2006, (S1): 119 -121 .  DOI: 10.3321/j.issn:1000-7091.2006.z1.028