Humic acid refers to the natural polymer organic matter produced by the dissolution, transformation and chemical process of organic matter such as plant residues, which is mostly extracted from peat soil, slime and weathered coal, and is an excellent organic matter. It comes from the soil and is also beneficial to the soil. It should be noted that organic matter is not necessarily humic acid, but humic acid must be a good organic matter.

The role of humic acid in improving soil

The method of applying heavy inorganic matter and light organic fertilizer leads to the destruction of soil structure, the decrease of soil fertilizer efficiency, the more and more serious situation of soil agglomeration and salinization, and the more and more barren soil by chemical fertilizer. Humic acid, as a high-quality organic matter, plays a vital role in soil improvement.

After humic acid fertilizer is applied to soil, it can promote the production of soil colloid, improve soil structure and improve soil water-locking and air permeability. Structurally, humic acid has many functions, which can adjust the pH of soil, fix harmful heavy metals on the soil surface through complexation, chelation and oxidation, and reduce the toxic and side effects of heavy metals exceeding the standard. In addition, humic acid can provide rich nitrogen source and energy for soil microbial strains, and improve the vitality of soil microbial strains.

Improve nutrition timeliness

Humic acid can produce complex ions with urea solution, thus achieving the effect of controlling nitrogen and retarding coagulation; The mixed use of phosphorus, potassium fertilizer and humic acid can reduce the fixation of phosphorus by metal ions such as calcium, magnesium and iron, and promote the absorption of phosphorus by rhizomes; Functional groups in humic acid can adsorb calcium ions and avoid leaching of potassium.

Stimulate growth

Humic acid can stimulate the physiological metabolism of plants, promote the early germination of seeds and improve the germination rate; Stimulate the division and perfection of extreme meristem cells of roots and rhizomes, promote the rapid rooting and more rooting of seedlings, and improve the water absorption and water absorption ability of crops.

Improve crop drought resistance

Plants will inevitably be affected by high temperature, drought, flood disaster or disease erosion during their growth. Humic acid can promote the growth of plants, improve their own stress resistance, promote the production of valine and the accumulation of sugar, improve the activities of cell protection enzymes such as lactate dehydrogenase and chloroprene dismutase, and adjust the physiological conditions of green plants in setbacks, such as cytoplasmic water permeability and transpiration rate, so as to resist the threat of external setbacks.

Some studies also show that the mixed application of humic acid and chemical fertilizer can improve quality and increase efficiency, and can effectively reduce the occurrence of some diseases. Usually effective topdressing with humic acid can improve the resistance of crops and reduce the harm caused by setbacks.

Improve quality

Humic acid can complex some insoluble nutrients and promote the absorption, application and transportation of this essential nutrient by rhizomes. Humic acid can also convert sugar into soluble monosaccharide according to the enzyme-promoting activity, improve the formation and accumulation of cassava starch, protein and fatty substances, accelerate the transfer of various nutrients to fruits and seeds, make fruits full and firm, and improve quality.

Humic acid can increase the total number and volume of somatic cells in the swollen part, and has obvious effect on rhizome crops. Humic acid can also promote the production of fruit wax, cuticle and lignocellulose on crop surface. It is very important to improve the color and smoothness of citrus fruit when it is applied in Peng Da and unpacking period.

How to use humic acid? Use time

After planting, the application effect is good at flowering stage, expanding stage and unpacking stage; Apply it before the arrival of dry season, rainy season and cold current to improve crop resistance; Suitable for crops with weak growth and urgent need to resume growth.

usage mode

Washing and spraying are closely combined, and the effect is remarkable; Combined application of inorganic organic fertilizer and bacterial fertilizer can reduce weight, improve quality and increase efficiency; A few times, enough diluent, good humic acid, but not greedy. Only by applying it according to the conditions of crops and soil can we see obvious effects.