Method for rapidly providing medium and microelement nutrients to granular fertilizer

Abstract

The present invention relates to a method for rapidly providing medium and microelement nutrients to a granular fertilizer, the method is characterized in that the granular fertilizer is placed in mixing equipment, and the surface of the granular fertilizer is sprayed directly with a layer of medium and microelement nutrient agent according to measurement requirements. The medium and microelement nutrient agent comprises 33% to 76.3% by mass of the medium and trace element nutrients, 1% to 5% by mass of a dispersant, 1% to 5% by mass of a wetting agent, 1% to 5% by mass of a film-forming agent, 0.5% to 5% by mass of a film-forming aid, 0.1% to 5% by mass of a filler, 20% to 40% by mass of water and 0.1% to 2% by mass of a pigment. The method has the advantages that a medium and microelement nutrient layer is rapidly and efficiently formed on the surface of the fertilizer so as to effectively separate the replacement reaction of metal elements and ions in the fertilizer system to ensure the effectiveness of the added medium and microelements, the method is more suitable for BB fertilizer blending; no additional drying is added; the adding process is extremely simple; the method is free of back materials and flexible in formula switching; when the granular fertilizer is marked by colors, and the medium and microelement nutrients are coated, the granular fertilizer can carry different colors, is different from a common fertilizer, also can better meet color marking requirements of BB fertilizers (bulk blend fertilizers).

Description

technical field [0001] The invention relates to the manufacture of novel fertilizers, in particular to a method for rapidly providing nutrient components of medium and trace elements to granular fertilizers. Background technique [0002] China is a large agricultural country. Various fertilizers, especially chemical fertilizers, have made an indelible contribution to my country's food security. The main fertilizers are urea, phosphorus fertilizer and potassium fertilizer, as well as various N:P:K formulations prepared from the above three raw materials. Compared with the compound fertilizer. The use of these fertilizers has played an important role in increasing farmers' production. However, in recent years, farmers have generally reported that no matter how much chemical fertilizers are used, the effect of increasing production is not obvious, that is, the output and the amount of chemical fertilizers used form an S curve. In addition, people also found that the fruits and...

AI Technical Summary

Problems solved by technology

3. Magnesium participates in the conversion process of phosphoric acid, without magnesium, the output cannot be formed

3. Sulfur is not a component of chlorophyll, but it affects the synthesis of chlorophyll

2. Manganese deficiency inhibits protein synthesis, causing nitrate to accumulate in plants, making plants harmful

2. When molybdenum is deficient, molybdenum protein cannot be synthesized, resulting in the accumulation of nitrate in plants, making plant food harmful

3. Molybdenum deficiency affects nitrogen fixation by nitrogen-fixing bacteria

[0018] However, fertilizer companies have encountered a problem in the process of producing fertilizers containing medium and trace elements: among the 10 trace elements required by crops, except for sulfur and boron, the other elements are all metal elements, and these metal elements have only retained ions. state or chelated state or activated state to be absorbed by crops

[0021] In the past few years, we still haven't found a good way to efficiently add medium and trace elements to nitrogen, phosphorus and potassium fertilizers. Because of this problem, to a certain extent, it has affected the increase in the output of agricultural products and the improvement of the quality of agricultural products, and has restricted my country's agricultural development

[0022] At the same time, foreign high-priced nitrogen, phosphorus and potassium fertilizers containing medium and trace elements are exported to China in large quantities, which affects the sales of local fertilizers in China.