The Correlation of Peel Browning Spot with Nutrition of Ca, Mg, K in Huangguan Pears
GUAN Jun-feng, JI Hua, FENG Yun-xiao, LI Li-mei, SUN Yu-long, SI Jian-li
ACTA AGRICULTURAE BOREALI-SINICA . 2006, (3): 125 -128 .  DOI: 10.3321/j.issn:1000-7091.2006.03.029