High-nitrogen type water-soluble fertilizer containing humic acid and preparation method of high-nitrogen type water-soluble fertilizer

Abstract

The invention discloses high-nitrogen type water-soluble fertilizer containing humic acid and a preparation method of the high-nitrogen type water-soluble fertilizer. The high-nitrogen type water-soluble fertilizer is prepared from following raw materials: monoammonium phosphate, potassium nitrate, urea, humic acid, ferrous sulfate, zinc sulfate, magnesium sulfate, a microelement chelating agent and complexing elements. The preparation method comprises steps as follows: the raw materials are weighed; clear water is added to a mixing tank, and the weighed raw materials are added in sequence, heated, stirred and dissolved completely; after an obtained solution is cooled, impurities are removed through filtering, and filling is executed. The high-nitrogen type water-soluble fertilizer containing humic acid is totally water-soluble, is a chelating type, has high activity and reasonable nutrient ratio and can rapidly supplement crops with various required nutrients. The organic liquid fertilizer with good performance, low cost and moderate chelating constant is provided, so that contradiction of balanced fertilizer preparation and balanced absorption of crops can be effectively eliminated.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a high-nitrogen water-soluble fertilizer containing humic acid and a preparation method thereof. Background technique [0002] my country is the world's largest producer of chemical fertilizers. Although the arable land area is less than 10% of the global total, the amount of chemical fertilizers used is close to 1 / 3 of the global total. However, excessive use of chemical fertilizers not only reduces soil fertility rapidly, but also seriously affects crop quality. , but also pollute the environment and seriously damage the ecological environment. Humic acid fertilizer adds humic acid, which is beneficial to land and crops, to a single component of chemical fertilizer, and has gradually become a new direction of fertilizer production. It has obvious advantages such as instant dissolution, high absorption rate, quick effect, no residue, and convenient application. H...

AI Technical Summary

Problems solved by technology

However, the humic acid water-soluble fertilizer currently sold on the market is a small amount of liquid fertilizer containing nitrogen, phosphorus, and potassium. These simple humic acid water-soluble fertilizers cannot meet the normal growth needs of plants due to their low nitrogen, phosphorus, and potassium content. In the manufacturing process of humic acid water-soluble fertilizer, it is very difficult to add humic acid and dissolve it, specifically because most of the humic acid raw materials used to make water-soluble fertilizer are potassium salt or sodium salt of humic acid, which are in the form of powder or fragments If it is directly added into water or slurry like other raw materials during production, even if the addition speed is very slow, many lumps of different sizes will be formed, hanging on the upper part of the liquid layer, and the outside of these lumps will be partially melted The humic acid colloid is dry powder inside, and it is difficult for the liquid components outside the mass to continue to penetrate into the mass. Even with strong stirring, it often takes a long time, and the effect is not ideal, which greatly reduces production efficiency and increases energy consumption. , and seriously affect the product quality, even after a long time of stirring, there are still a lot of undissolved small pieces in the product