Humic including natural humic ( peat , lignite, weathered coal ) , oxidized regenerated humic acid, humic acid biochemistry , fungi humic acid, humic acid , such as soil , containing a variety of functional groups are carboxyl, phenolic hydroxyl , quinone -based and other non- uniform The organic polymer material . Natural humic acid is mainly animal and plant remains, is the result of microbial decomposition , transformation, and geochemical processes caused by a class of accumulated organic matter , “the plant transformation” , ” chemical polymerization ” , ” tissue autolysis ” ” microbial synthesis ” four kinds of scientific hypothesis . The main chemical plant natural peat humic acid and protein composition differences disappear .
Based on plant physiological metabolism and growth is the oxidation – reduction cycle law , the role of natural humic acid has the following aspects.
( 1 ) using its own active functional groups quinone group – phenolic hydroxyl redox changes , regulating plant growth .
( 2 ) using non- quinone carbonyl group , a nitro group , an alcoholic hydroxyl group , an amino group can also be metabolic oxidation – reduction reaction .
( 3 ) as the H receptor redox plants , promote the accumulation of sugar . Under hypoxic conditions, natural humic acid can promote adenosine triphosphate (ATP) synthesis, or as a supply source of polyphenols , from breathing catalyst.
( 4 ) contain steroids , terpenoids , α- naphthaleneacetic acid , succinic acid , cinnamic acid , coumaric acid , phenylacetic acid, ferulic acid and other 13 categories of plant endogenous hormones.
( 5 ) through its carboxyl functional groups to form humic acid , potassium , phosphorus humic acid , humic acid zinc, selenium and humic acid , humic acid boron, calcium humic acid , humic acid and iron plants constitute release organic – inorganic composite nutrition.
( 6 ) the use of its physical properties colloids, polyelectrolytes , surfactants , etc., as the immobilized enzyme carrier , improve target activity , played resilience , infiltration, water retention, promote metabolism , plant nutrition to maintain homeostasis.
( 7 ) under the action of light , natural humic acid radicals present in the molecule can be used with many environmental compounds ( pesticides, fertilizers , metal ions, minerals , etc. ) effects, can detoxify herbicides , increased fertilizer and so on. Natural vegetative form of humic acid fertilizer application in agriculture fruitful, but to explore chemical pesticides, bio- pesticides synergies , nutrient transformation mechanism , and is still deepening in .
For efficacy, phytotoxicity , pesticide residues and other focal point to explore the role of the active ingredient glyphosate and humic acid , quinolinic acid and other low-carbon conditions to form biologically active peptide , polysaccharide derivatives into plant nutrients , promote acid circulating mechanism ; Discussion neonicotinoids , pyrethroids and other hydrolytic enzymes in the oxidoreductase , a coenzyme , and the role of the polymerase , desulfurization, cyanide , and then converted to specific nitrogen and vitamins, proteins radical reaction plant nutrition History ; protection of grain, fruit and vegetable harvest, build a harmonious society for sustainable development has far-reaching significance.
