Usage And Precautions Of Humic Acid Fertilizers

Humic acid fertilizer is a new type of fertilizer containing humic acid substances, its main types are humic acid, nitro rot Humic acid and purified humic acid products, humic acid compound fertilizer, mainly used as base fertilizer, purified humic acid is mainly used for watering or spraying crops, as a growth regulator. At the same time, it can also be used as seed soaking, which can improve the germination rate and cultivate strong seedlings. Usage: ① Base fertilizer. 300~400 kg of aqueous solution containing 0.02%-0.05% humic acid per mu is mixed with farm fertilizer, or ditching and digging base. The water group can be combined with land preparation irrigation. (2) Topdressing, seedling stage and head stage, 250 kg of aqueous solution containing humic acid (0.01%-0.1%) per mu, irrigated near the roots (do not touch the roots), the application of sodium humate or potassium humate in the paddy field, can be irrigated with water or poured, lifting seedlings, strengthening ears, and promoting growth and development. ③ Spray outside the root. From the late flowering period to the early stage of grouting, spray three or three times outside the root, each mu spray containing humic acid 0.01%~0.05% aqueous solution 50~75 kg, can make the grain full, increase the thousand grain weight, reduce the empty rate. It is best to spray from 2 p.m. to 6 p.m. ④ Soak the seed. Soak seeds with aqueous solution containing humic acid 0.01%~0.05%, soak vegetables, wheat and other seeds for 5~10 hours, rice, cotton and so on for more than 24 hours. It can increase germination rate, advance seedling emergence and enhance seedling root ability. ⑤ Dip seedling root, dip cuttings. Rice, sweet potato, vegetables and other transplanting crops, before transplanting with 0.05%~0.1% of sodium humate, potassium humate solution soaked for a few hours, or when planting dipped seedling root, soak fruit tree cuttings. Fast root, increase secondary root, shorten the slow seedling period, improve the survival rate. Notes: humic acid fertilizer as a base fertilizer, seed fertilizer is better than topdressing, concentrated application is better than spreading, deep application is better than shallow application. At the same time, rotting fertilizer cannot completely replace inorganic fertilizer and farm fertilizer, and must be applied with chemical fertilizer and organic fertilizer, especially with phosphate fertilizer. The input ratio of various kinds of waste fertilizer materials is different, the manufacturing method is different, the nutrient content is very different, and the appropriate concentration should be mastered when applying. Potassium humate and sodium are hormone fertilizers, should pay attention to temperature, the cold effect is slow after application, the hot effect is fast, and the general temperature needs to be effective in more than 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 a decrease in production, so the application should be stopped or the number and amount of application should be reduced. Only in the place where the soil moisture is sufficient and the irrigation conditions are good, can the fertilizer effect be fully exerted.