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Organic fertilizer capable of reducing absorption of heavy metal cadmium by vegetables and preparation method thereof

A technology for organic fertilizers and heavy metals, which is applied in the preparation of organic fertilizers, the treatment of organic fertilizers, and the treatment of biological organic parts, can solve problems such as affecting crop yield and quality, being easily absorbed and accumulating by plants, and polluting crops, etc. The effect of popularization, environmental protection, and low production cost

Inactive Publication Date: 2019-12-06
GUANGXI ZHUANG AUTONOMOUS REGION ACAD OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, attention has been paid to the production and application of organic fertilizers, which are regarded as an important starting point for improving soil fertility and the quality of agricultural products; however, a large amount of chemical fertilizers are used in cultivated land, and heavy metal cadmium in the soil exceeds the standard, especially in vegetable garden soil. A trace heavy metal element that is toxic to animals and plants. It is easily absorbed and accumulated by plants. If it exceeds a certain limit, it will affect the yield and quality of crops.
Therefore, if a large amount of chemical fertilizers are used in the long run, it will pollute the land, pollute the crops, and then poison the human body.

Method used

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  • Organic fertilizer capable of reducing absorption of heavy metal cadmium by vegetables and preparation method thereof
  • Organic fertilizer capable of reducing absorption of heavy metal cadmium by vegetables and preparation method thereof
  • Organic fertilizer capable of reducing absorption of heavy metal cadmium by vegetables and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] An organic fertilizer that reduces the absorption of heavy metal cadmium by vegetables comprises the following preparation steps:

[0022] Step A: Screen the dominant fermentation strains, select Bacillus subtilis (No. ACCC11060), Bacillus megaterium (No. ACCC10010), Bacillus mucilaeinosus (No. ACCC11103), yeast (Bacillus saccharomyces, No. ACCC20065) and Aspergillus oryzae (Bacillus aspergillus oryzae No. ACCC30163) as fermentation strains, these five strains were purchased from the National Culture Collection Center, and the mass percentages of the five were: subtilis Bacillus 25%, Bacillus megaterium 25%, Bacillus jelly-like 20%, yeast 15%, Aspergillus oryzae 15%, that is, the sum of the mass percentages of the five is 100%.

[0023] Step B: Make mixed koji, use the above-mentioned dominant fermentation strains screened for the production of mixed koji, operate under sterile conditions, inoculate and cultivate the dominant strains after purification, and the strains ...

Embodiment 2

[0032] An organic fertilizer that reduces the absorption of heavy metal cadmium by vegetables comprises the following preparation steps:

[0033] Step A: Screen the dominant fermentation strains, select Bacillus subtilis (No. ACCC11060), Bacillus megaterium (No. ACCC10010), Bacillus mucilaeinosus (No. ACCC11103), yeast (Bacillus saccharomyces, No. ACCC20065) and Aspergillus oryzae (Bacillus aspergillus oryzae No. ACCC30163) as fermentation strains, these five strains were purchased from the National Culture Collection Center, and the mass percentages of the five were: subtilis 20% of bacillus, 20% of bacillus megaterium, 20% of jelly-like bacillus, 20% of saccharomyces and 20% of aspergillus oryzae, the sum of the mass percentages of the five is 100%.

[0034] Step B: Make mixed koji, use the above-mentioned dominant fermentation strains screened for the production of mixed koji, operate under sterile conditions, inoculate and cultivate the dominant strains after purification, a...

Embodiment 3

[0043] An organic fertilizer that reduces the absorption of heavy metal cadmium by vegetables comprises the following preparation steps:

[0044] Step A: Screen the dominant fermentation strains, select Bacillus subtilis (No. ACCC11060), Bacillus megaterium (No. ACCC10010), Bacillus mucilaeinosus (No. ACCC11103), yeast (Bacillus saccharomyces, No. ACCC20065) and Aspergillus oryzae (Bacillus aspergillus oryzae No. ACCC30163) as fermentation strains, these five strains were purchased from the National Culture Collection Center, and the mass percentages of the five were: subtilis 20% of bacillus, 25% of bacillus megaterium, 20% of jelly-like bacillus, 15% of saccharomyces and 20% of aspergillus oryzae, the sum of the mass percentages of the five is 100%.

[0045] Step B: Make mixed koji, use the above-mentioned dominant fermentation strains screened for the production of mixed koji, operate under sterile conditions, inoculate and cultivate the dominant strains after purification,...

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Abstract

The invention provides an organic fertilizer capable of reducing absorption of heavy metal cadmium by vegetables. The organic fertilizer is prepared by the following method: preparing a dominant fermentation strain, wherein the dominant fermentation strain comprises bacillus subtilis, bacillus megaterium, bacillus mucilaginosus, yeast and aspergillus oryzae; making the dominant fermentation straininto a mixed fungus Koji; uniformly mixing crop straws and rice bran with the mixed fungus Koji, and performing fermenting to obtain the organic fertilizer produced by the method. The organic fertilizer obtained by the technical method can reduce absorption of soil heavy metal cadmium by vegetables under the condition that the content of heavy metal cadmium in soil exceeds the standard, so that the cadmium content of cultivated vegetables reaches the standard, and the vegetables meet standards of healthy and safe vegetables. Moreover, the organic fertilizer produced by the method can improveyield and quality of vegetables.

Description

technical field [0001] The invention relates to an organic fertilizer, in particular to an organic fertilizer capable of reducing the absorption of heavy metal cadmium by vegetables when the content of heavy metal cadmium in soil exceeds the standard and a preparation method thereof. Background technique [0002] In recent years, attention has been paid to the production and application of organic fertilizers, which are regarded as an important starting point for improving soil fertility and the quality of agricultural products; however, a large amount of chemical fertilizers are used in cultivated land, and heavy metal cadmium in the soil exceeds the standard, especially in vegetable garden soil. Trace heavy metal elements that are toxic to animals and plants are easily absorbed and accumulated by plants, and if they exceed a certain limit, they will affect the yield and quality of crops. Therefore, if a large amount of chemical fertilizers are used in the long run, it will...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05F17/00
CPCC05F5/002C05F17/00Y02W30/40
Inventor 谭宏伟王淦森
Owner GUANGXI ZHUANG AUTONOMOUS REGION ACAD OF AGRI SCI