1. Product Introduction
Our potassium humate flakes are made from weathered lignite. After
screening and crushing, the raw material is thoroughly stirred and
reacted with a potassium hydroxide solution. The humic acid and
potassium hydroxide react to neutralize, producing water-soluble
potassium humate. After the reaction, the product is centrifuged to
remove the residue (unreacted raw material impurities) and obtain a
potassium humate stock solution. This potassium humate stock
solution is then evaporated and concentrated to remove excess
water, resulting in a highly concentrated potassium humate slurry.
The concentrated slurry is drum-dried to produce potassium humate
flakes.
Potassium humate flakes have the following main functions:
(1) Improve soil
Improve soil structure: Promote the formation of soil aggregate
structure, enhance soil permeability and water and fertilizer
retention capacity, and reduce soil erosion.
Activate soil nutrients: Chelate minerals in the soil that are
difficult for crops to absorb and convert them into easily absorbed
forms, thereby improving nutrient utilization.
(2) Promote crop growth and stress resistance
Stimulate growth and development: Promote crop seed germination and
root growth, enhance photosynthesis, accelerate plant growth, and
increase yield.
Enhance stress resistance: Improve the ability of crops to resist
drought, cold, and pests and diseases, and reduce the impact of
extreme environments on crops.
(3) Fertilizer efficiency and environmental protection
Improve fertilizer efficiency: When applied together with nitrogen,
phosphorus, and potassium fertilizers, the unique pore structure of
humic acid can prevent the loss of nitrogen sources in the soil and
promote the secondary absorption of phosphorus and potassium
elements. This improves fertilizer utilization and reduces the
amount of chemical fertilizers applied. Used in combination with
other chemical fertilizers, it can reduce the amount of chemical
fertilizers used and reduce environmental pollution. Adsorption and
purification function: The unique pore structure of humic acid can
absorb harmful substances such as heavy metal ions and pesticide
residues in the soil, reducing their harm to crops and the
environment.
(4) Improve crop quality
It can promote the synthesis of cellulose and sugar sources in
plants. It can improve the quality of agricultural products, such
as increasing the sweetness and color of fruits and improving the
taste of vegetables. It can also enhance photosynthesis and promote
chlorophyll synthesis.
2.Product Indicators
Potassium Humate Flake
CAS: 68514-28-3
HS: 31059090
Standard:GB/T 33804-2025
Item | Indicators |
TypeⅠ | TypeⅡ | Type Ⅲ |
Humic Acid (dry basis) | ≥60% | ≥50% | ≥40% |
Organic matter (dry basis) | ≥80% | ≥70% | ≥70% |
Potassium (K2O dry basis) | 8%, 10%, 12% | 8%, 10%, 12% | 8%, 10%, 12% |
Water Solubility | 100% | 98% | 95% |
pH | 9-11 | 9-11 | 9-11 |
Moisture | ≤15% | ≤15% | ≤15% |
Size | 1-2mm | 1-2mm | 1-2mm |
3. Usage method
(1) Soil base application: Sprinkle potassium humate flakes directly on the soil surface,
then plow into the soil (depth of 10-20 cm) to fully mix the flakes
with the soil. The dosage is usually 150-450 kg per hectare, which is adjusted according to soil fertility and crop needs.
(2) Topdressing (hole application/furrow application): During the crop growth period, dig holes or furrows around the
root system, place the flakes and cover with soil to avoid direct
contact with the root system (to prevent local concentration from
being too high). Suitable for crops with a long growth period such
as fruit trees and vegetables.
(3) Spraying/flushing after dissolution: Dissolve the flakes in water (dilute at a ratio of 1:100-500,
depending on the concentration), make a solution and spray on the
leaves (spray evenly on both sides of the leaves) or flush with
irrigation water to quickly replenish nutrients and enhance crop
resistance. Stir thoroughly during dissolution to ensure complete
dissolution before application to avoid local concentrations that
affect crops or cause nozzle clogging.
(4) Fertilizer synergists: Other macronutrient fertilizers can be used in combination at a
rate of 5%-10%. Do not use them simultaneously with strongly acidic
or calcium-magnesium fertilizers.
4. Target crops
(1) Field crops
Wheat, corn, and rice: When applied as base fertilizer or topdressing, it can improve
soil aggregate structure, enhance lodging resistance, promote full
grains, and increase thousand-grain weight.
Cotton and soybeans: It can promote root development, improve stress resistance (such
as drought resistance, disease and pest resistance), help flowering
and boll/pod formation, and increase yield.
(2) Cash crops
Fruits and vegetables (tomatoes, cucumbers, peppers, strawberries,
citrus, apples, etc.): It can improve fruit quality, increase sweetness and glossiness,
reduce deformed fruits, and extend shelf life; in facility
cultivation, it can alleviate soil problems caused by continuous
cropping obstacles.
Roots and tubers (potatoes, sweet potatoes, radishes, etc.): It can promote the expansion of the underground part, increase
starch content, reduce cracking, and improve marketability.
Oil crops (peanuts, rapeseed): It can enhance photosynthesis,
promote oil synthesis, and increase oil content.
(3) Other crops
Flowers and seedlings: Promote lush branches and leaves, bright colors, enhance cold and
drought resistance, and enhance ornamental value.
Chinese medicinal materials: Improve the quality of medicinal materials, promote the
accumulation of effective ingredients, protect root growth, and
increase survival rate.
Compared with potassium humate granules, this product has the
advantage of being filtered through a centrifuge to remove
impurities, with almost no water-insoluble matter, and can be 100%
water-soluble, which allows for a wider range of uses. In addition,
this product uses a scraping process, which has a fast production
cycle and high daily output. Therefore, it can be produced
immediately according to customer-customized content, and the
content can be adjusted widely.
