12/08/2019
How to use humic acid fertilizer reasonably？
Humic acid sodium is mainly mixed into solution after pouring, seed or do foliar fertilizer.
Among them, mix into 0.05%-0.1% concentration to do the base fertilizer, mu application 200-250 kg, preferably mixed with farm manure;
Apply 150-200 kg of topdressing fertilizer mu, apply it with water or irrigate the roots of crops.
Before planting, the concentration of seed soaking or page spraying is 0.05%-0.5%, and the soaking time is generally 5-10 hours, and 24 hours for rice and cotton.
Page spraying should be carried out from flowering to early grouting, and sprayed 2-3 times.
The application method and amount of ammonium humate are the same as that of sodium humate.
Humic acid soluble fertilizers are made by adding nitrogen, phosphorus, potassium or trace elements to humic acid.
In terms of application methods, water-soluble solid or liquid products are mainly used as foliar fertilizer, seed fertilizer or topdressing fertilizer, but the cost is high and the release amount is limited, which should be combined with farm manure and conventional fertilizer.
Humic acid fertilizer base fertilizer, seed fertilizer is better than topdressing, concentrated application is better than spreading, deep application is better than shallow.
At the same time, humic acid fertilizer cannot completely replace inorganic fertilizer and farm manure, so it must be applied together with chemical fertilizer and organic fertilizer, especially with phosphate fertilizer for better effect.
Various humic acid fertilizer materials have different input ratios, manufacturing methods and nutrient contents.
Potassium humate and sodium humate are mostly hormone fertilizers. After applying them, the effect is slow in cold days and fast in hot days. If the temperature is appropriate, the effect will be achieved within 18 hours.If the temperature is higher than 38℃, it will accelerate the respiration of crops and reduce the accumulation of dry matter, resulting in reduced production. Therefore, the application should be stopped or the application frequency and dosage should be reduced.
