Research progress of humic-acid containing fertilizer

A review was drawn on the research and development of multi-functional humic acid-containing fertilizer.Source of humic acid,category,properties,function,mechanism,production process,variety and application of humic acid-containing fertilizer was illustrated.The research and development of humic acid-containing fertilizer was described,such as compounds fertilizer and liquid fertilizer of humic acid,biotechnology humic acid.Also some problems existing in production and suggestions of product development and generalization was presented.