Effect of Different Potassium Application Rate on Some Enzymes Activity During the Course of the Growth of Flue-cured Tobacco
YE Xie-feng, LIU Guo-shun, GUO Zhan-wei, LI Xue-li, SI Hui, WANG Hong-feng
ACTA AGRICULTURAE BOREALI-SINICA . 2004, (3): 88 -91 .  DOI: 10.3321/j.issn:1000-7091.2004.03.022