A multilayer slow release functional fertilizer and a preparing method thereof

A functional fertilizer and slow-release technology, applied in layered/coated fertilizers, nitrogen fertilizers, potash fertilizers, etc., can solve the problems of low utilization rate of chemical fertilizers, and achieve the effects of avoiding nutrient loss, reducing use and improving soil.

Inactive Publication Date: 2015-04-01
HEFEI ZHISHANG AGRI DEV
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  • Abstract
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Problems solved by technology

[0002] Chemical fertilizer is the largest material input in agricultural production. According to the statistics of the Food and Agriculture Organization of the United Nations, chemical fertilizers account for 40-60% of the increase i

Method used

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Embodiment 1

[0013] A multi-layer slow-release functional fertilizer, characterized in that it is made of the following raw materials in parts by weight (Kg): 30 parts by weight of quartz stone, 60 parts of peanut cake powder, 45 parts of rice straw, 20 parts of corn stalk, 15 parts of bean curd residue, 10 parts of rice washing water, Attapulgite 70, EM fermentation agent 3, urea 10, zinc sulfate 4, ammonium phosphate 10, potassium bicarbonate 18, ammonium molybdate 3, magnesium chloride 7, vermiculite powder 12, lime powder 20, bone meal 3, coating agent 5 and adequate amount of water;

[0014] The coating agent is made of the following raw materials in parts by weight: divinylbenzene 1, calcium oxide 6, melamine formaldehyde resin 3, isopropanol 6, bamboo charcoal powder 5, acetic acid 2, glycerin 1, limestone powder 10, persulfuric acid Potassium 0.5 and appropriate amount of water; the preparation method is: dilute isopropanol with 3 to 4 times of water, then add divinylbenzene, glyce...

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Abstract

A multilayer slow release fertilizer is disclosed. NPK components are enveloped by using an enveloping agent and are adopted as an inner layer structure. An outer layer is prepared by covering with a mixture of fermented organic materials and smashed quartz stone granules. The fermented organic materials contain a plurality of organic acids to be supplied for direct absorption for plants. Using of chemical components is reduced. When the fertilizer enters the surface of soil, firstly, the mixed quartz stone granules can destroy hardened soil, makes the soil loose and soft so as to allow components to enter, and plays a role of improving the soil; the fermented organic materials are absorbed by roots along with water streams so as to expose the inner enveloping structure; and the special enveloping agent is slowly dissolved along with time to release inner chemical components, thus avoiding nutrient loss and plant root cell water loss due to overhigh salinity. The chemical components and the organic materials are reasonably divided in labor and cooperated, supplement each other and bring out the best in each other.

Description

technical field [0001] The invention relates to a multilayer slow-release functional fertilizer and a preparation method thereof, belonging to the field of multilayer slow-release fertilizers in fertilizers. Background technique [0002] Chemical fertilizer is the largest material input in agricultural production. According to the statistics of the Food and Agriculture Organization of the United Nations, chemical fertilizers account for 40-60% of the increase in yield. However, the production time shows that due to the nature of the fertilizer itself and the soil Due to the impact of environmental conditions and agricultural measures, the utilization rate of chemical fertilizers is very low. The waste of nutrient resources caused by the low utilization rate of fertilizer nutrients in China is astonishing. According to statistics, the annual production and application of nitrogen fertilizer in China is about 20 million tons, and the seasonal utilization rate of fertilizers is...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05G3/08C05G3/80C05G3/90
CPCC05B7/00C05G3/00C05G3/80C05G5/30C05G5/37C05B17/00C05C3/00C05C9/00C05D1/00C05D3/02C05D5/00C05D9/02C05F5/002C05F5/004Y02P60/21Y02A40/22
Inventor 庄蕙瑛
Owner HEFEI ZHISHANG AGRI DEV
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