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A kind of green moisture conservation and slow-release compound organic cultivation substrate and preparation method thereof

A cultivation substrate and organic technology, applied in the field of organic cultivation substrates and preparation thereof, can solve the problems of loose structure and poor gelling ability of a water-retaining agent, and achieve the effects of easy degradation, low cost and high water absorption

Active Publication Date: 2021-08-17
HEXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention utilizes a large number of hydroxyl groups distributed on the surface of the attapulgite clay to chemically cross-link with the fermented bacterial chaff to form an organic / inorganic composite gel. Due to the inherent bonding properties of the attapulgite clay, the composite gel is endowed with good mechanical properties and solves the current problem based on fermentation. The problem of loose structure and poor gel ability of the water-retaining agent prepared from fungus chaff

Method used

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  • A kind of green moisture conservation and slow-release compound organic cultivation substrate and preparation method thereof
  • A kind of green moisture conservation and slow-release compound organic cultivation substrate and preparation method thereof
  • A kind of green moisture conservation and slow-release compound organic cultivation substrate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Send the attapulgite raw soil into a pulverizer for crushing, and sieve to obtain 150-mesh clay powder;

[0042] (2) Add the above-mentioned attapulgite clay powder into the sodium pyrophosphate solution with a mass concentration of 1.0%, stir at a high speed until uniformly mixed; then raise the temperature to 40°C, continue stirring for 1.0h, and after standing for stratification, extract the upper layer to suspend solution, and added H 3 PO 4 React until no bubbles escape;

[0043] (3) After ultrasonically dispersing the above suspension for 20 minutes, vigorously stir for 2.5 hours, then age at room temperature for 24 hours, use a high-speed centrifuge to discard the supernatant liquid, and collect the lower layer solid; put it in an oven at 80°C and grind it finely. Pass through a 200-mesh sieve for standby;

[0044] (4) Repeatedly wash the fermented mushroom chaff with distilled water until there is no residue; after drying at 40°C, put it into a ball mill ...

Embodiment 2

[0059] (1) Send the attapulgite raw soil into a pulverizer for crushing, and sieve to obtain 200-mesh clay powder;

[0060] (2) Add the above-mentioned attapulgite clay powder into the sodium pyrophosphate solution with a mass concentration of 2.0%, stir at a high speed until uniformly mixed; then raise the temperature to 40°C, continue stirring for 1.5h, and after standing for stratification, extract the upper layer to suspend solution, and add appropriate amount of H 3 PO 4 , react until no bubble escapes;

[0061] (3) After ultrasonically dispersing the above suspension for 30 minutes, vigorously stir for 5 hours, then age at room temperature for 24 hours, use a high-speed centrifuge to discard the supernatant, and collect the lower solid; 200-mesh sieve for spare;

[0062] (4) Repeatedly wash the bran of Agaricus bisporus fermentation bacteria with distilled water until there is no residue; after drying at low temperature, put it into a ball mill and grind for 10 minute...

Embodiment 3

[0075] (1) Send the attapulgite raw soil into a pulverizer for crushing, and sieve to obtain 200-mesh clay powder;

[0076] (2) Add the above-mentioned attapulgite clay powder into the sodium pyrophosphate solution with a mass concentration of 2.5%, stir at a high speed until uniformly mixed; then raise the temperature to 45°C, continue stirring for 1.5h, after standing for stratification, extract the upper layer to suspend solution, and added H 3 PO 4 React until no bubbles escape;

[0077] (3) After ultrasonically dispersing the above suspension for 40 minutes, vigorously stir for 4.5 hours, then age at room temperature for 36 hours, use a high-speed centrifuge to centrifuge, discard the supernatant, and collect the lower solid; put it in an oven at 95°C and grind it finely. Pass through a 200-mesh sieve for standby;

[0078] (4) Repeatedly wash the chaff of fermented fungus with distilled water until there is no residue; after drying at 60°C, put it into a ball mill and ...

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Abstract

The invention belongs to the technical field of organic cultivation substrates, in particular to a green moisture-preserving slow-release composite organic cultivation substrate and a preparation method thereof. In the invention, raw materials such as edible fungus fermented chaff, attapulgite clay and potassium humate are chemically polymerized, physically cross-linked and mixed to obtain an organic cultivation substrate with the function of moisture conservation and slow release. The method of the invention is simple in process and low in cost, and the prepared organic cultivation substrate has high water absorption and slow-release nutrient effects, and overcomes the shortcomings of traditional polymer water-absorbing resins such as single function, poor gelation, difficult degradation, and high preparation cost . The invention also solves the problems of long composting and fermentation period of organic / inorganic compound organic cultivation substrate, easy loss of nutrients and the like. It is suitable for water absorption, water retention, fertilizer retention, and fertilizer release in agricultural and forestry soils. After use, it can improve soil structure, improve crop resistance to drought and saline-alkali, enhance soil water absorption and moisture retention, reduce fertilizer loss and environmental pollution, and significantly increase crop production.

Description

technical field [0001] The invention belongs to the technical field of organic cultivation substrates, and in particular relates to an organic cultivation substrate and a preparation method thereof. Background technique [0002] In recent years, the scale of edible fungus cultivation in my country has continued to expand, and the cultivation technology of edible fungi has also changed from the original section tree cultivation to the cultivation of fungus chaff. However, except for a very small part of traditional edible fungus chaff (FC) which is used as livestock and poultry feed, most of them are discarded or burned after use, which not only wastes resources, but also easily causes environmental pollution. The fermented fungus chaff contains high crude protein and crude fat, and also contains amino acids, polysaccharides and various mineral elements. Its chemical composition and physical and chemical properties can effectively change the aggregate structure in the soil an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G24/10A01G24/15A01G24/20A01G24/28A01G24/00
CPCA01G24/00A01G24/10A01G24/15A01G24/20A01G24/28
Inventor 禹兴海韩玉琦张奇峰季绪刚李顺利范智博王勤礼王永生
Owner HEXI UNIV
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