Special fertilizer for lawn and granulating method thereof

Abstract

A fertilizer specially for lawn includes the following components: 35-75% of inorganic fertilizer, 25-35% of organic fertilizer, the total amount of the inorganic fertilizer being 1.5-2 times of the organic fertilizer; and balance of stuffing and adhesive. The inorganic fertilizer is a combination of urea superphosphate, calcium-magnesia phosphate fertilizer, potassium sulfate and potassium chloride, and the N, P and K are preferably mixed according to 9-11: 7-9: 5-7. THe organic fertilizer is mixture of dry animal stool and plant ash, wherein the animal stool accounts for 60-85% of the total amount of the organic fertilizer, and the balance of the plant ash. The invention also improves the granulation technology, namely rebuilding a granulating disc, adding accessories in the granulating disc, increasing the balling rate, the shape being fine and even; rebuilding a drier from inner heating into outer heating, secondary balling under a temperature of 60-65 DEG C; rebuilding a sieving system, besides sieving, polishing and milling, rounding and shaping, enveloping and coating with oil, fine machining the product, which is called third balling to make the product bright and round. The technology is a new breakthrough to the granulation technology at present.

Description

technical field [0001] The invention belongs to the technical field of soil fertilizers, in particular to special fertilizers for lawns. Background technique [0002] The compound fertilizer characterized by organic and inorganic compound fertilizer products began in the middle and late 1980s. The appearance of this new type of fertilizer is the need of the modernization of organic agriculture, and it is the product of the eager demand of the farmers and the efforts of the majority of scientific and technological personnel. Over the past 10 years, the research and application of this compound fertilizer has made considerable progress. In terms of organic raw materials, it is expanded to more than 20 types of solid and liquid wastes, including sugar industry, animal husbandry, metallurgy, mining, chemical industry, food processing, sanitation and other industries. On the basis of the research on the properties of these wastes, the organic-inorganic formulation principle and...

AI Technical Summary

Problems solved by technology

[0006] Although the compound fertilizer industry has been greatly developed, the current compound fertilizers are mainly used for crops, and there is still a big gap between the requirements for lawns and crops.

[0007] There are a small amount of imported lawn fertilizers on the market, but their localization ability is poor, the nutrients are single, and the fertilizer efficiency is not good. They are mainly inorganic chemical fertilizers, and the price is very expensive (about 5,000 yuan per ton). Replacing agricultural chemical fertilizers has exacerbated the compaction of the soil, causing serious breeding of pests and physiological diseases

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