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Composite microbial soil conditioner as well as preparation method and application thereof

A technology of soil improver and compound microorganism, which is applied in the field of soil remediation, can solve the problems of long residence time, irreversibility, and decline of soil fertility, and achieve the effects of improving adsorption performance, increasing yield and quality, and improving disease resistance

Inactive Publication Date: 2020-09-04
河南省科学院地理研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Soil heavy metal pollution has the characteristics of poor mobility of pollutants in the soil, long residence time, and irreversibility, and can cause soil fertility to decline, crop yield and quality to decline
[0003] Using methods such as applying soil improvers and reducing agents can improve soil quality and reduce pollution to a certain extent. However, existing soil improvement products either focus on the adsorption of heavy metals, or focus on increasing soil nutrients and preventing soil erosion, etc., with synergistic effects bad

Method used

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  • Composite microbial soil conditioner as well as preparation method and application thereof
  • Composite microbial soil conditioner as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A composite microbial soil improver, the raw materials include: 25g of silicate, 10g of modified activated carbon, 25g of organic matter, 5-g of microbial agent and 10g of bentonite.

[0030] The organic matter is leaves, pig manure and corn stalks, and the mass ratio is 1:2:2.

[0031] The preparation method of compound microbial soil conditioner comprises the following steps:

[0032] (1) Get silicate and bentonite and mix and pulverize, cross a 100-mesh sieve to obtain a mixture;

[0033] (2) Mix the mixed material and modified activated carbon and place it in an environment of 60° C., and heat it for 8 hours to obtain a soil improvement base material;

[0034] (3) Mix the soil improvement base material, organic matter and microbial bacterial agent, ferment at 30° C. for 5 days, and the humidity is 65%, to obtain a compound microbial soil improver.

[0035] The preparation method of modified activated carbon:

[0036] (1) Pulverize the activated carbon, pass throu...

Embodiment 2

[0041] A compound microbial soil improver, the raw materials include 30g of silicate, 15g of modified activated carbon, 30g of organic matter, 10g of microbial agent and 20g of bentonite.

[0042] Organic matter is leaves, pig manure and corn stalks, with a mass ratio of 1.5:2.5:4.

[0043] The preparation method of compound microbial soil conditioner comprises the following steps:

[0044] (1) Get silicate and bentonite and mix and pulverize, cross a 100-mesh sieve to obtain a mixture;

[0045] (2) Mix the mixed material and the modified activated carbon and place it in an environment of 70° C., and heat for 7 hours to obtain the soil improvement base material;

[0046] (3) Mix the soil improvement base material, organic matter and microbial bacterial agent, ferment at 35° C. for 6 days, and the humidity is 75%, to obtain a composite microbial soil improver.

[0047] The preparation method of modified activated carbon:

[0048] (1) Pulverize the activated carbon, pass thro...

Embodiment 3

[0053] A compound microbial soil improver, the raw materials include: 35g of silicate, 10g of modified activated carbon, 25g of organic matter, 15g of microbial agent and 25g of bentonite.

[0054] The organic matter is leaves, pig manure and corn stalks with a mass ratio of 2:3:5.

[0055] The preparation method of compound microbial soil conditioner comprises the following steps:

[0056] (1) Get silicate and bentonite and mix and pulverize, cross a 120 mesh sieve to obtain a mixture;

[0057] (2) Mix the mixed material and the modified activated carbon and place it in an environment of 80° C., and heat for 5 hours to obtain the soil improvement base material;

[0058] (3) Mix the soil improvement base material, organic matter and microbial bacterial agent, ferment at 40°C for 5 days, and the humidity is 85%, to obtain a compound microbial soil improver.

[0059] The preparation method of modified activated carbon:

[0060] (1) Pulverize the activated carbon, pass through...

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Abstract

The invention discloses a composite microbial soil conditioner as well as a preparation method and application thereof. The invention relates to the technical field of soil remediation. Raw materialscomprise 25-35 parts of silicate, 10-15 parts of modified activated carbon, 25-35 parts of organic matter, 5-15 parts of a microbial agent and 10-25 parts of bentonite. The invention further providespreparation methods of the modified activated carbon and the organic matter. The microbial agent is added into the soil conditioner, so that the disease resistance of crops is remarkably improved, meanwhile, heavy metals are further reduced and adsorbed through the microbial fermentation effect, and nutrients are provided for the crops; through the modified activated carbon, the heavy metal adsorption performance is obviously improved; and through fermentation treatment of the raw materials, nutritional ingredients can be more easily absorbed and utilized by plants and microorganisms. The yield and the quality of crops are effectively improved.

Description

technical field [0001] The invention relates to the technical field of soil remediation, and more specifically relates to a composite microbial soil improver and its preparation method and application. Background technique [0002] At present, China's land pollution situation is relatively serious. Relevant studies have shown that at least 20 million hectares of soil have been polluted to varying degrees. Heavy metal pollution comes from a wide range of sources. Unreasonable discharge of "three wastes" from mineral processing and smelting industries will lead to heavy metal pollution in the soil. Soil heavy metal pollution has the characteristics of poor mobility of pollutants in the soil, long residence time, and irreversibility, and can cause the decline of soil fertility, crop yield and quality. [0003] Using methods such as applying soil improvers and reducing agents can improve soil quality and reduce pollution to a certain extent. However, existing soil improvement pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C05G3/60C05G3/80C05F17/20C09K101/00
CPCC05D9/00C09K17/40C09K2101/00C05F17/20C05G3/60C05G3/80C05F3/00C05F11/00Y02W30/40
Inventor 梁少民
Owner 河南省科学院地理研究所