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Fertilizer special for reducing cadmium in soil and preparation method of fertilizer

A special fertilizer and cadmium-reducing technology, which is applied in the field of soil cadmium-reducing special fertilizer and its preparation, can solve the problems of reducing soil economic benefits, and achieve the effects of increasing effective time, reducing cadmium content, and reducing cadmium absorption

Inactive Publication Date: 2016-12-07
郴州市通源生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Chinese invention patent CN103521511A discloses a method of using turfgrass to ecologically restore cadmium-contaminated soil. This method screens cadmium-resistant bermudagrass, and then performs ecological restoration of cadmium-contaminated soil. However, this method must plant bermudagrass on the land. It can only meet the needs of greening and reduce the economic benefits of soil. In order to improve the economic and social benefits of cadmium-contaminated soil, it is necessary to develop a special fertilizer for cadmium pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation method of soil cadmium-reducing special fertilizer is carried out according to the following steps:

[0038] A. Put distiller's grains, chicken manure, manure and straw into the mixer, and stir evenly;

[0039] B. After taking it out, spray the microorganisms with water into the above fertilizer, stir evenly and then ferment for 12 days;

[0040] C. Put the fermented fertilizer into the mixer, add expanded vermiculite powder and plant ash in turn, and stir evenly;

[0041] D, drying and granulating to obtain the special fertilizer for reducing cadmium in soil.

[0042] The particle size of the expanded vermiculite powder is 50-200 μm.

[0043] The special fertilizer for reducing cadmium in soil comprises the following main components in parts by weight:

[0044] Distiller's grains 20%

[0045] Chicken manure 4%

[0046] Manure 8%

[0047] Ash 35%

[0048] Microorganisms 3%

[0049] Expanded vermiculite powder 4%

[0050] Straw surplus.

[0051]De...

Embodiment 2

[0054] A preparation method of soil cadmium-reducing special fertilizer is carried out according to the following steps:

[0055] A. Put distiller's grains, chicken manure, manure and straw into the mixer, and stir evenly;

[0056] B. After taking it out, spray the microorganisms with water into the above fertilizer, stir evenly and then ferment for 15 days;

[0057] C. Put the fermented fertilizer into the mixer, add expanded vermiculite powder and plant ash in turn, and stir evenly;

[0058] D, drying and granulating to obtain the special fertilizer for reducing cadmium in soil.

[0059] The particle size of the expanded vermiculite powder is 50-200 μm.

[0060] The special fertilizer for reducing cadmium in soil comprises the following main components in parts by weight:

[0061] Distiller's grains 15%

[0062] Chicken manure 3%

[0063] Manure 8%

[0064] Ash 30%

[0065] Microorganisms 2%

[0066] Expanded vermiculite powder 5%

[0067] Straw surplus.

[0068] D...

Embodiment 3

[0071] A preparation method of soil cadmium-reducing special fertilizer is carried out according to the following steps:

[0072] A. Put distiller's grains, chicken manure, manure and straw into the mixer, and stir evenly;

[0073] B. After taking it out, spray the microorganisms with water into the above fertilizer, stir evenly and then ferment for 8 days;

[0074] C. Put the fermented fertilizer into the mixer, add expanded vermiculite powder and plant ash in turn, and stir evenly;

[0075] D, drying and granulating to obtain the special fertilizer for reducing cadmium in soil.

[0076] The particle size of the expanded vermiculite powder is 50-200 μm.

[0077] The special fertilizer for reducing cadmium in soil comprises the following main components in parts by weight:

[0078] Distiller's grains 15%

[0079] Chicken manure 3%

[0080] Manure 5%

[0081] Ash 40%

[0082] Microorganisms 2%

[0083] Expanded vermiculite powder 5%

[0084] Straw surplus.

[0085] De...

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Abstract

The invention provides fertilizer special for reducing cadmium in soil and a preparation method of the fertilizer. Main components of the fertilizer comprise expanded vermiculite powder, vinasse, animal manure, straws, chicken manure, microorganisms and plant ash. The alkaline fertilizer plant ash has a certain passivation effect on cadmium; by the adoption of mutual cooperation of flora such as black aspergilus and saccharomycetes in the vinasse, the fertilizer has a very good cadmium passivation effect; the added expanded vermiculite powder has a certain slow release effect on microbial flora, can prolong the effective time of the fertilizer and also has a certain adsorption effect on the cadmium. The fertilizer and the preparation method of the fertilizer can greatly reduce the content of effective cadmium in the soil and reduce cadmium absorption of plants so as to achieve the effect of reducing the cadmium in the soil.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a special fertilizer for reducing cadmium in soil and a preparation method thereof. Background technique [0002] Cadmium is one of the most toxic heavy metal elements, and its hazards are extremely serious. About 1.4*106 hectares of cultivated land in my country have been polluted by cadmium to varying degrees, and 25 areas in 11 provinces and cities have been designed, seriously affecting the sustainable use of soil and water bodies and the safety of agricultural and livestock products. How to effectively control pollution and restore the ecological environment is an issue of great concern to the whole society. [0003] The main ways that soil cadmium pollution causes harm to the environment are as follows: ①The leaching of rainwater infiltrates downwards, which leads to groundwater pollution; ②The cadmium-contaminated soil is exposed and directly or indirectly absorbed by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/80
CPCC05D1/00C05G3/00C05G3/80C05D9/00C05F3/00C05F5/008C05F9/04C05F11/00C05F11/08
Inventor 盛建平欧琴华陈光星李国恒
Owner 郴州市通源生物科技有限公司
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