Humic acid composite slow release fertilizer and producing method thereof

A slow-release fertilizer and humic acid technology, applied in organic fertilizers, fertilizer mixtures, fertilization devices, etc., can solve the problems of poor product appearance quality and internal quality slow-release properties, and achieve the improvement of seasonal utilization rate, soil fertility, and simplification. Effects of agricultural work
CN101429072AActive Publication Date: 2009-05-13INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
Publication Date
2009-05-13

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Abstract

The invention discloses a humic acid composite slow-release fertilizer and a method for preparing the same. In the fertilizer, weathered coal and the common fertilizer are used as raw materials, and subjected to activation of the weathered coal, material mixing, high-temperature spraying granulation and drying to obtain the fertilizer. By the organic-inorganic combination, the organic-inorganic mutual-aid control and the nutrient slow release, the fertilizer improves the utilization rate of the fertilizer (10 to 15 percent), reduces loss of nutrients and avoids the secondary pollution. The fertilizer has the characteristics of wide material source, high mechanical strength of fertilizer particle (the mechanical strength is more than and equal to 16N), no deliquescence, convenient transportation and use and the like, and has wide application prospect in production.
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Description

【Technical field】

[0001] The invention relates to a slow-release fertilizer and a production method thereof, more particularly, the invention relates to a humic acid compound slow-release fertilizer and a production method thereof. 【Background technique】

[0002] The slow-release fertilizers developed at home and abroad are mainly coated slow-release fertilizers. There are mainly two types of coating materials used, one is organic polymers (such as resin polyolefins), and the other is insoluble or slightly soluble in water. Inorganic materials (such as sulfur, phosphate rock powder, calcium magnesium phosphate fertilizer, etc.). The production of polymer-coated slow-release fertilizers requires special coating towers and solvents. The coating materials are expensive, and the production process costs are high. The coating materials decompose slowly in the soil and tend to remain. However, the controlled release performance of high molecular polymer materials is better. Due ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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