Humic Acid Fertilizer Production from Peat Black Carbon Soil

Description

Humic acid is an amorphous polymer compound formed by the decomposition of dead animals and plants by microorganisms and chemical action. It is widely found in peat soil, peat and lignite. Humic acid contains aromatic groups, carboxyl groups, hydroxyl groups, carbonyl groups, methoxy groups and other active groups, which determine the properties of humic acid, such as acidity, hydrophilicity, cation exchange and physiological activity. Humic acid contains important elements such as carbon, nitrogen, hydrogen, sulfur, and phosphorus that crops need, so it can be used to process and produce corresponding organic fertilizers. The processed humic acid-containing materials, such as peat soil, are added with suitable nitrogen, phosphorus and potassium nutrients to produce humic acid nitrogen, phosphorus and potassium compound fertilizers containing various nutrients.

During production, humic acid raw materials, such as peat, peat soil, black pond mud, etc., are naturally dried to about 20% water content, and crushed to about 0.2mm. Add ammonia water at room temperature, the concentration of ammonia water is 15%, the ratio of solid to liquid is 1:1.5, the ratio of mud to ammonia is 1:0.05, soaked at room temperature for 1 hour, the product is dried (drying temperature is 105 ℃) and then mixed with nitrogen, phosphorus and potassium fertilizer source. Grain, that is, humic acid nitrogen, phosphorus and potassium fertilizer.

Humic acid compound fertilizer not only has high fertilizer efficiency, but also is a fertilizer synergist, which can improve nitrogen utilization rate by 10% to 30%, phosphorus utilization rate by 5% to 10%, and potassium utilization rate by about 5%. .

The type 1 active fertilizer trial-produced by Shanghai Pudong Chemical Plant contains 10% organic nutrients, N> 7.8%, P₂O₅ 5%, K₂0 5%, micro-fertilizer 3%, and the total active ingredient is 30%. After the field test in Jinshan County, Shanghai, the effect is good.

The application of humic acid compound fertilizer is the same as the application method of ordinary compound fertilizer. It can be used as base fertilizer or as top dressing. It has obvious effects on various crops, such as rice, sugarcane, tobacco, vegetables, fruit trees, etc. According to different plant physiological characteristics, the ratio of nitrogen, phosphorus and potassium can be adjusted to become various special compound fertilizers. The humic acid compound fertilizer is applied 50~100kg per acer.