2006年12月23日,在“第六届全国绿色环保肥料新技术、新产品交流会暨全国腐植酸行业年会”上,有感于各位专家、学者从多方位对腐植酸的深入研究,追溯到历届会议上有关腐植酸的理论探索,令我思索不已。在结集这些研究成果中,当一位年近八旬的老腐植酸工作者——丁彩萍女士,将她 December 23, 2006, in the “Sixth National Green Fertilizer New Technology and New Products Exchange Conference and the National Humic Acid Industry Annual Meeting”, I feel all experts and scholars from many aspects of the in-depth study of humic acid, I went back to the theoretical discussions on humic acid in previous meetings and made me ponder over. In compiling these research results, when an old humic acid worker, nearly 80 years old, Ms. Ding Caiping brought her