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A humic acid superabsorbent resin with water-saving and water-retaining functions and micro-fertilizer slow-release function

A technology of super absorbent resin and humic acid, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve the problems of unsatisfactory production and sales of micro-fertilizers, insufficient attention, etc., to improve the germination rate, improve the survival rate, The effect of preventing the roots from drying out

Inactive Publication Date: 2016-08-17
JINGGANGSHAN UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the practice of agricultural production, due to the small amount of micro-fertilizers, micro-fertilizer products are generally used as foliar fertilizers. However, due to insufficient attention, the production and sales of micro-fertilizers are not ideal.
[0005] If the trace elements needed for plant growth are introduced into the humic acid superabsorbent resin, the obtained humic acid multifunctional superabsorbent resin can not only have the basic functions of water saving and water retention, but also have the new function of slow-release micro-fertilizer , to achieve the continuous release of water and micro-fertilizers required for plant growth, and at the same time, the humic acid superabsorbent resin can be converted into fertilizers that promote plant growth and improve soil after degradation. There are no research and application reports in this area.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) After removing stones, iron wires and other sundries from the weathered coal, use a pulverizer to crush it into a powder of about 200 mesh;

[0025] 2) Take 10 kg of the above powder, add 1 kg of sodium hydroxide, 0.2 kg of sodium ethylenediamine tetraacetate, 100 kg of water, stir evenly, heat to 90 ° C for 2 hours, cool down and centrifuge to get the supernatant and concentrate it to 30 % about sodium humate solution;

[0026] 3) The weight ratio of the prepared micro-fertilizer is: sodium edetate: Na 2 B 4 o 7 •10H 2 O: ZnSO 4 •7H 2 O: FeSO 4 •7H 2 O: MnSO 4 •H 2 O:(NH 4 ) 2 MoO 4 =15:7: 2: 3: 2: 0.5, add a small amount of water and stir well in advance to make it stable.

[0027] 4) Fully mix according to the raw material weight ratio of sodium humate solution: acrylic acid (neutralization degree is 65%): N,N`-methylenebisacrylamide: micro-fertilizer = 300:100:2:6, 30°C Stir the reaction for 20 minutes, add 12 parts of potassium persulfate, and rais...

Embodiment 2

[0029] 1) After the lignite is removed from stones, iron wires and other sundries, use a pulverizer to crush it into a powder of about 300 mesh;

[0030] 2) Take 10 kg of the above powder, add 1.5 kg of sodium hydroxide, 0.4 kg of sodium ethylenediamine tetraacetate, 150 kg of water, stir evenly, heat to 90 ° C for 2 hours, cool down and centrifuge to get the supernatant and concentrate it to 40 % about sodium humate solution;

[0031] 3) The weight ratio of the prepared micro-fertilizer is: sodium edetate: citric acid: Na 2 B 4 o 7 •10H 2 O: ZnSO 4 •7H 2 O:MnSO 4 •H 2 O=10:6:8: 2: 1, add a small amount of water and stir well in advance to make it stable.

[0032] 4) According to the raw material weight ratio of sodium humate solution: acrylic acid (neutralization degree is 50%): N,N`-methylenebisacrylamide: acrylamide: micro-fertilizer = 300:90:2:1:6 Mix well, stir and react at 40°C for 20 minutes, add 15 parts of ammonium persulfate, heat up to 90°C and react for 0....

Embodiment 3

[0034] 1) After the peat is removed from stones, iron wire and other sundries, use a grinder to crush it into a powder of about 200 mesh;

[0035] 2) Take 10 kg of the above powder, add 2 kg of potassium hydroxide, 0.5 kg of sodium ethylenediamine tetraacetate, and 200 kg of water, stir well, heat to 80 ° C for 1 hour, cool down, and centrifuge to get the supernatant and concentrate it to 35 % about potassium humate solution;

[0036] 3) The weight ratio of the prepared micro-fertilizer is: sodium edetate: oxalic acid: Na 2 B 4 o 7 •10H 2 O: ZnSO 4 •7H 2 O:FeSO 4 •7H 2 O: MnSO 4 •H 2 O=9:8:8:5:1:2, add a small amount of water and stir well in advance to make it stable;

[0037] 4) Fully mix according to the raw material weight ratio of potassium humate solution: acrylic acid (neutralization degree is 77%): N,N`-methylenebisacrylamide: micro-fertilizer = 300:90:2:7, 35°C Stir the reaction for 10 minutes, add 15 parts of ammonium persulfate, and raise the temperature ...

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PUM

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Abstract

The invention discloses a preparation method and application of multifunctional high-water absorption humic acid resin with water conserving, water retention and trace fertilizer sustained-release functions. The preparation method comprises the following steps of chelating borax, zinc sulfate, manganese sulfate, ammonium molybdate, iron sulfate and the like by using a chelating agent, mixing the raw materials at the ratio of sodium (or potassium) humate solution to acrylic acid to cross-linking agent to trace fertilizer being (300-400):(80-100):(1-3):(6-10), adding an initiator, and performing reaction to prepare the high-water absorption humic acid resin. The resin has the water conserving, water retention and trace fertilizer sustained-release functions, and can be applied to the industries of agriculture, forestry, gardening and the like to fulfill the aim of increasing both production and income, and the growth and development requirements of crops can be well met.

Description

technical field [0001] The invention provides a humic acid superabsorbent resin with the functions of water saving and water retention and slow release of micro-fertilizer, which belongs to the field of agricultural production application. Background technique [0002] In recent years, droughts and water shortages have occurred frequently, posing a serious threat to agricultural production. It is a national strategic need to achieve efficient use of water resources and food security. Research and development of superabsorbent resins with functions of water saving, water retention and soil improvement is an important measure to deal with drought and water shortage in the field of agricultural production. [0003] Traditional superabsorbent resins can be classified into starch-based, cellulose-based and synthetic resin-based. In recent years, the research on humic acid superabsorbent resin has aroused people's strong interest in recent years, and it is considered to be the mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F289/00C08F220/06C08H99/00C05G3/04C05G3/80
Inventor 隋岩胡荣华罗志刚钟龙金林海燕张喜如
Owner JINGGANGSHAN UNIVERSITY
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