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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (25): 102-108.doi: 10.11924/j.issn.1000-6850.casb2022-0758

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Research Progress of Humic Acid Fertilizer

ZHANG Peng1(), E Shengzhe1,2(), YUAN Jinhua2, WANG Yuxuan1, ZHAO Tianxin1, LIU Yana1, LU Gangbin1, YE Gengkang1, CAO Kun3, CHEN Zhenyu3   

  1. 1 College of Resources and Environment, Gansu Agricultural University, Lanzhou 730070
    2 Institute of Soil Fertilizer and Water-saving Agriculture, Gansu Academy of Agricultural Sciences, Lanzhou 730070
    3 Qingyang Wozhong Agricultural Technology Co., Ltd., Qingyang, Gansu 745000
  • Received:2022-09-01 Revised:2023-01-16 Online:2023-09-05 Published:2023-08-28

Abstract:

Humic acid has the ability to improve soil, increase fertilizer efficiency and provide nutrients for plants. It plays an important role in the ecological environment. Humic acid is a complex aromatic macromolecule formed by amino acids, amino sugars, peptides and aliphatic compounds. The extraction of humic acid includes microbial dissolution method, alkali-acid precipitation method and acid extractant method. Based on this, the basic concept, properties, mechanism of humic acid and the preparation principle and function of humic acid fertilizer were summarized, and some shortcomings were discussed. It was pointed out that the research focus of humic acid fertilizer in the future would be the main components of humic acid raw materials. More cost-saving method should be studied for the production of humic acid, and a unified quality inspection standard should be established.

Key words: humic acid, properties, classification, humic acid extraction, humic acid fertilizer preparation principle, humic acid fertilizer