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Porous solid granular slow release fertilizer

A porous solid and granular technology, applied in solid/semi-solid fertilizers, animal carcass fertilizers, nitrogen fertilizers, etc., can solve the problems of harmful, combustible and irritating to the body, achieve high utilization rate, high water absorption rate, and reduce irrigation times Effect

Inactive Publication Date: 2018-08-31
合肥慧明瀚生态农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The patent application with publication number CN107698326A discloses a slow-release fertilizer and its preparation method, including the following raw materials in parts by weight: 20-30 parts of compound fertilizer, 5-10 parts of polyvinyl alcohol, 1-5 parts of polyacrylic acid, polyacrylamide 3-8 parts, 5-10 parts of inorganic minerals, 0.3-0.8 parts of emulsifier, 0.1-0.5 parts of surfactant, 0.3-0.7 parts of crosslinking agent, 0.3-0.5 parts of coupling agent; inorganic minerals are attapulgite, Diatomaceous earth and bentonite are composed at a mass ratio of 1:1.3:2.1. This kind of slow-release fertilizer has a good slow-release effect, and the slow-release time can last up to three months, but its composition contains polyvinyl alcohol, which is widely used in the world. Included in the list of carcinogens by the International Agency for Research on Cancer of the World Health Organization, it is flammable and irritating, and it is harmful to the body after absorption

Method used

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  • Porous solid granular slow release fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This embodiment relates to a porous solid granular slow-release fertilizer and a preparation method thereof;

[0053] Weigh the following raw materials in parts by weight in advance:

[0054] 48 parts of compound organic matter;

[0055] 11 parts of waxy cornstarch;

[0056] 8 parts of phosphated starch;

[0057] 4 parts of degradable cross-linking agent;

[0058] 2 parts carrageenan;

[0059] 5 parts of 40 mesh shell powder;

[0060] 1 part of palm fiber with a length of 600 μm;

[0061] 3.5 parts of 40 mesh palygorskite powder;

[0062] 1.5 parts of compound blowing agent;

[0063] 1 part of compound coupling agent;

[0064] 0.3 parts of trace elements;

[0065] 0.2 parts of mixed strains;

[0066] The preparation of the above-mentioned part of raw materials is selected as shown in the following table 1:

[0067] Table 1

[0068]

[0069] (1) protein foaming agent: get the ox hoof horn powder slag of 3 parts, the corn bran bran of 4 parts, the concentrati...

Embodiment 2

[0076] This embodiment relates to a porous solid granular slow-release fertilizer and a preparation method thereof;

[0077] Weigh the following raw materials in parts by weight in advance:

[0078] 50 parts of compound organic matter;

[0079] 12 parts waxy cornstarch;

[0080] 9 parts of phosphated starch;

[0081] 4.5 parts of degradable cross-linking agent;

[0082] Carrageenan 2.3 parts;

[0083] 5.5 parts of 45 mesh shell powder;

[0084] 1.2 parts of palm fiber with a length of 650 μm;

[0085] 4 parts of 45 mesh palygorskite powder;

[0086] 1.8 parts of compound blowing agent;

[0087] 1.2 parts of compound coupling agent;

[0088] 0.35 parts of trace elements;

[0089] 0.23 parts of mixed strains;

[0090] The preparation of above-mentioned part raw material is selected as shown in following table 2:

[0091] Table 2

[0092]

[0093] (1) protein foaming agent: get the ox hoof horn powder slag of 3.5 parts, the corn bran bran of 4.5 parts, the concentr...

Embodiment 3

[0100] This embodiment relates to a porous solid granular slow-release fertilizer and a preparation method thereof;

[0101] Weigh the following raw materials in parts by weight in advance:

[0102] 52 parts of compound organic matter;

[0103] 13 parts of waxy cornstarch;

[0104] 10 parts of phosphated starch;

[0105] 5 parts of degradable cross-linking agent;

[0106] Carrageenan 2.5 parts;

[0107] 6 parts of 40-60 mesh shell powder;

[0108] 1.5 parts of palm fiber with a length of 700 μm;

[0109] 4.5 parts of 40-60 mesh palygorskite powder;

[0110] 2 parts of compound foaming agent;

[0111] 1.5 parts of compound coupling agent;

[0112] 0.4 parts of trace elements;

[0113] 0.25 parts of mixed strains;

[0114] The preparation of the above-mentioned part of raw materials is selected as shown in the following table 3:

[0115] table 3

[0116]

[0117]

[0118] (1) protein foaming agent: get the ox hoof horn powder slag of 4 parts, the corn bran bran...

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Abstract

The invention discloses a porous solid granular slow release fertilizer, and relates to the technical field of fertilizers. The slow release fertilizer comprises compound organic matter, trace elements, mixed bacteria, a degradable crosslinking agent, waxy corn starch, phosphate esterified starch, carrageenan, 45-mesh shell powder, palm fiber with a length of 650 microns, 45-mesh palygorskite powder, a compounding foaming agent and a compounding coupling agent. The slow release fertilizer has better environmental protection, water retention, slow release effect, applicability, fertilizer efficiency, soil improvement, control efficiency and yield increase. The slow release fertilizer can better meet the demands of crops and is in line with the market for novel green, environmentally friendly and multifunctional fertilizers, and has good market prospects and competitiveness.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a porous solid granular slow-release fertilizer. Background technique [0002] Slow-release fertilizer (SRFS), also known as long-term fertilizer, is a new type of fertilizer that slows down the release rate of nutrients in fertilizers through chemical and biological factors. Generally, the solubility in water is very small. After being applied to the soil, under the action of chemical and biological factors, the fertilizer will gradually decompose, and the fertilizer effect will be released slowly to meet the needs of crops for nutrients throughout the growth period; [0003] Compared with quick-acting fertilizers, slow-release fertilizers have the following advantages: [0004] 1. The solubility in water is small, and the nutrients are released slowly in the soil, which reduces the loss of nutrients. [0005] 2. The fertilizer effect is long-term and stable, and the energ...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05G3/80
CPCC05B7/00C05G3/00C05G3/80C05G5/12C05B15/00C05C3/00C05C5/04C05D9/00C05D9/02C05F1/005C05F3/00C05F5/002C05F11/00C05F11/08
Inventor 徐仙峰
Owner 合肥慧明瀚生态农业科技有限公司
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