About Humic acids

1.Humic acid source and classification

Component of Humic Acid

Component of Humic Acid

Humic acid is generally considered complex, heterogeneous mixture of molecular weight hydroxy carboxylic one. Lignite, peat and weathered coal humic acid content is high, the main source of extraction of humic acid. Humic acid from weathered coal extraction rate in the highest, followed by lignite, peat minimum.

According to the conventional method of soil science, it can be divided into humic acid, fulvic acid and humin three components. It was also divided into three categories: not dissolved in an alkaline solution, can be dissolved in an acidic solution, called black rot acid; only dissolved in an alkaline solution, can not be dissolved in an acidic solution, called brown rot acid; dissolved in both alkaline solution and acidic solution, called fulvic acid.

2.Humic acid characteristics

humic substances

Humic substances

Humic acid is an organic acid from a polymer composed of aromatic and variety of functional groups, and has good physical activity and absorption, complexation, switching and other functions. Humic acid can promote the formation of soil aggregate structure, enhance soil permeability, enhance soil water, fertilizer capacity; also has a stimulus effect on plant growth, enhance its drought, cold, diseases and pests and other capabilities, also improve the quality of agricultural products ; stimulate soil microbial activity and improve adequate carbon, nitrogen, improve the microbes living environment, increase the number of beneficial microorganisms in soil and soil enzyme activities.

3. Classification of humic acid fertilizer

Preparation of different humic acid fertilizer is generally divided into the following categories:

腐植酸与腐植酸钾水溶对比_副本1

Potassium humate solution and humic acid solution

– Humic acid salts (sodium humate, potassium humate, potassium fulvate, fulvic acid, etc.)

– Humic a resin copolymer (humic Superabsorbent, humic acid soil conditioner)

– Fulvic acid fertilizer (fulvic acid drought-resistant agents, fulvic acid nutrient liquid fertilizer, compound fertilizer fulvic acid particles)

– Long elemental fertilizer humic acid (long-acting humic acid urea, long-acting humic acid fertilizer)

– Humic acid organic and inorganic fertilizer (various specialty fertilizer)

According to different modes of administration,humic acid fertilizer can be divided into the following categories:

fertilizer application

Spray irrigation

– Soaking, dipping fertilizer (sodium humate, potassium humate, potassium fulvate, fulvic acid, etc.)

– Foliar spray or root fertilization (sodium humate, potassium humate, fulvic acid drought-resistant agents, fulvic acid nutrient liquid fertilizer, humic acid liquid fertilizer)

– Field with the basal or top dressing (humates, humic acid derivatives, long-term humic acid elemental fertilizer, humic acid organic and inorganic fertilizer, humic acid fertilizer)

– Amelioration soil fertilizer (humic acid Superabsorbent, humic acid soil conditioner)

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