Characteristics of Different Humic Acid and its Effects on Soil and Crops
LUO Yu1, LI Xiao-liang2, ZHANG Shan-shan1,3, ZHU Ming1, LV Yi-zhong3, DAI Zhong-
. 2015, (2): 118 -125 .  DOI: 10.13304/j.nykjdb.2014.474

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