Organic bacterial fertilizer for remediation of manganese ore polluted soil and preparation method thereof

A technology of polluting soil and organic bacteria, applied in the preparation of organic fertilizers, organic fertilizers, inorganic fertilizers, etc., to achieve the effects of enhancing fertilizer efficiency, reducing soil heavy metal toxicity, and low production costs

Inactive Publication Date: 2017-03-01
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But at present there is no special organic bacterial fertilizer whose formula is determined according to the composition and pollution degree of heavy metal pollutants in manganese ore polluted soil. Organic bacterial fertilizer is required to improve the growth environment of plant roots in polluted areas, provide necessary nutrients for plant growth, enhance the water holding capacity of rhizosphere soil and effectively reduce the toxicity of heavy metals in rhizosphere soil

Method used

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  • Organic bacterial fertilizer for remediation of manganese ore polluted soil and preparation method thereof
  • Organic bacterial fertilizer for remediation of manganese ore polluted soil and preparation method thereof

Examples

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Effect test

Embodiment 1

[0032] An organic bacterial fertilizer used for manganese ore contaminated soil remediation of the present invention, after measuring the heavy metal content in the soil of the test area, the formula of the special organic bacterial fertilizer is determined to be: 5 parts by mass of basic nutrient solution, 20 parts by mass of relieving compound organic fertilizer Raw materials, 70 parts by mass of water-retaining medium (the water-retaining medium used in this embodiment is peat soil plus plant ash) and 5 parts by mass of anti-manganese ore composite microbial bacterial agent.

[0033] The preparation method of the organic bacterial manure that is used for manganese ore polluted soil remediation in aforementioned embodiment 1 specifically comprises the following steps:

[0034] (1) Prepare basic nutrient solution: mix calcium superphosphate, potassium sulfate, sodium hydroxide, disodium hydrogen phosphate and sodium dihydrogen phosphate to obtain basic nutrient solution; in ba...

Embodiment 2

[0052] An application of the organic bacterial fertilizer for manganese ore-contaminated soil remediation of Example 1 in the remediation of manganese ore-contaminated soil, using the slag collected from Hunan Zixing manganese tailings pond as a substrate to carry out a pot test.

[0053] Experimental group: the organic bacterial fertilizer of Example 1 and the slag from the manganese tailings pond were evenly mixed according to the mass ratio of 1:4 and put into pots. A total of 8 pots of parallel samples were set up.

[0054] Control group: Add N, P, and K chemical fertilizers in the same amount as the organic bacterial fertilizer in Example 1 to the slag of manganese tailings, and put them in pots. A total of 8 pots of parallel samples were set up.

[0055] Three selected plant seedlings were transplanted into each pot. After one year of planting, the changes in the increase in plant height and biomass of the test plants were investigated, and the results of the investiga...

Embodiment 3

[0059] Embodiment 3: The organic bacterial fertilizer used in the manganese ore contaminated soil remediation of embodiment 1 is used in the ecological restoration project of the manganese tailings polluted area.

[0060] 4hm 2 For the demonstration project of ecological restoration of manganese ore waste slag land, in the early stage of restoration, the slag samples in the project area were measured and analyzed, the nutrient level of the slag land, the types of polluting elements and their pollution degree, and the contents of Mn, Pb, Zn, and Cd elements in the soil in the 0-50cm section were respectively It is 12251mg / Kg, 37301mg / Kg, 4304mg / Kg, 100mg / Kg, much higher than the background value of Hunan Province and China; it belongs to the heavy pollution of multiple metal elements.

[0061] Experimental area: plant paulownia and eucalyptus mixedly in this demonstration area. The afforestation method is to dig a hole of 0.5m×0.5m×0.5m, and then add the organic fertilizer for ...

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Abstract

The invention discloses an organic bacterial fertilizer for the restoration of manganese ore-polluted soil, as well as a preparation method thereof. The organic bacterial fertilizer comprises the following raw materials in parts by mass: 3-5 parts of basic nutrient solution, 20-25 parts of remissive complex organic raw materials, 70-75 parts of water retention media and 3-5 parts of anti-manganese complex microbial agent. The preparation method comprises the mixing and fermentation steps. The organic bacterial fertilizer for the restoration of manganese ore-polluted soil has the effects that the soil structure is modified, the water retention and constant temperature can be achieved, the toxicity of heavy metals around roots can be reduced, the survival rate of plants can be increased, and the growth of plants can be promoted; in addition, the toxicity of manganese elements in the soil of plant roots can also be effectively relieved, the effect of the organic fertilizer can be enhanced, and the restoration capability of plants can be enhanced.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to an organic bacterial fertilizer used for repairing manganese ore polluted soil, and also to a preparation method of the organic bacterial fertilizer. Background technique [0002] There are many types and wide distribution of manganese mines in my country. The soil pollution caused by mining and smelting activities is usually compound pollution of multiple heavy metals, and the main polluting elements are Mn, Pb, Zn, Cd, etc. [0003] The soil vegetation of the manganese slag accumulation site is severely damaged, the water and nutrients are insufficient, and the toxicity of heavy metals is too high, so that most microorganisms and plant species are difficult to survive in this environment, so it becomes the main limiting factor for the vegetation restoration of heavy metal contaminated soil. Due to the different types of heavy metal elements and pollution levels in different...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/04C05G3/06C05G3/70C05G3/80
CPCC05B1/02C05F17/00C05G3/80C05B17/00C05D1/02C05F3/00C05F11/00C05F11/08
Inventor 吴晓芙冯冲凌蒋丽娟李科林陈永华陈明利
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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