Compound fertilizer and preparation method thereof

Abstract

The invention relates to a fertilizer, particularly to a compound fertilizer and a preparation method thereof, which are mainly used for the soil nutrition of crops and belong to the technical field of fertilizer production. The compound fertilizer is prepared by using urea, monoammonium phosphate and potassium chloride as main raw materials and adopting the steps of adding a small quantity of one or the combination of trace elements: boron, zinc, manganese and molybdenum; pulverizing the raw materials; granulating; drying and the like. The compound fertilizer has high concentration, large fertilizer effect, uniform quality, uniform fertilizer effect, dispersity and non-agglomeration by granulation and convenient mechanical or manual fertilization, and contains abundant nutritious components without harming the crops.

Description

technical field [0001] The invention relates to a fertilizer, in particular to a compound fertilizer and a preparation method thereof, which is mainly used for soil nutrition of crops and belongs to the technical field of chemical fertilizer production. Background technique [0002] After a certain period of production until maturity, crops can produce fruits thousands of times heavier than their original seeds, and must absorb a large amount of nutrients from the soil, among which nitrogen, phosphorus, and potassium are most needed, because these three types of elements are in the soil. The content in it is far from meeting the growth needs of plants. In order to increase production and income, it is necessary to make appropriate supplements according to the conditions of soil elements, and a chemical fertilizer contains only one elemental chemical fertilizer with nutrient components. It also contains nitrogen, phosphorus, Chemical fertilizers with two or more nutrients suc...

AI Technical Summary

Problems solved by technology

[0002] After a certain period of production until maturity, crops can produce fruits thousands of times heavier than their original seeds, and must absorb a large amount of nutrients from the soil, among which nitrogen, phosphorus, and potassium are most needed, because these three types of elements are in the soil. The content in it is far from meeting the growth needs of plants. In order to increase production and income, it is necessary to make appropriate supplements according to the conditions of soil elements, and a chemical fertilizer contains only one elemental chemical fertilizer with nutrient components. It also contains nitrogen, phosphorus, Chemical fertilizers with two or more nutritional components such as potassium are compound fertilizers. The commonly used compound fertilizers have a single formula, which can no longer meet the nutritional needs of the soil.