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Microbial fertilizer for restoring acidic soil and preparation method thereof

A technology for microbial fertilizer and acid soil, applied in the field of microbial fertilizer for remediation of acid soil and its preparation, can solve the problems of reducing the degree of nutrient absorption of crops, neglecting the improvement of microbial activity in acid soil, etc., so as to improve crop yield, increase microbial activity, The effect of adaptability

Inactive Publication Date: 2017-02-22
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, acidified soil will inhibit the activity of microorganisms in the soil, and these microorganisms can decompose and mineralize the nutrients in the soil and turn them into various nutrient forms that can be directly absorbed by crops. degree of absorption
[0003] At present, the improvement of acidic soil mostly uses chemical methods to neutralize the soil pH, while ignoring the improvement of microbial activity in acidic soil. It cannot achieve the improvement of soil pH while enhancing the activity of microorganisms in acidic soil itself, so as to achieve comprehensive improvement of acidity. soil effect

Method used

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  • Microbial fertilizer for restoring acidic soil and preparation method thereof

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Embodiment 1

[0033] The preparation method of the acid soil conditioner of the present embodiment may further comprise the steps:

[0034] (1) Microbial agent preparation: Take 5g of glucose, 5g of beef extract, 10g of peptone, 5g of NaCl and 1L of distilled water and mix well, adjust the pH value to 7.0, and sterilize to obtain the primary medium; After being respectively transferred to the primary medium prepared above, they were cultured separately for 48 hours at a temperature of 37°C and a rotational speed of 250r / min; Then, the fermented liquid was obtained by expanding the culture at a temperature of 37°C and a rotating speed of 250r / min for 48 hours; then the fermented liquid of each bacteria was mixed in proportion, and the bran after sterilizing and cooling was mixed according to its sum The mass ratio of the mixed bacteria is 30:1, mixed evenly, air-dried naturally, sealed in bags, and made into bacterial agents. Among them, Desulfovibrio desulfuricans, Bacillus subtilis, Bacil...

Embodiment 2

[0037] The preparation method of the acidic soil conditioner of the present embodiment may further comprise the steps:

[0038] (1) Microbial agent preparation: Take 5g of glucose, 5g of beef extract, 10g of peptone, 5g of NaCl and 1L of distilled water and mix well, adjust the pH value to 7.0, and sterilize to obtain the primary medium; After being transferred to the primary medium prepared above, they were cultured separately for 48 hours at a temperature of 37°C and a rotational speed of 250r / min; the obtained strains were mixed according to the weight ratio of wet bacteria, and then added to the Amplify in the obtained primary culture medium, expand and cultivate for 48 hours at a temperature of 37°C and a rotation speed of 250r / min to obtain a fermentation broth; The bran is mixed evenly according to the mass ratio of 30:1 to the mixed bacteria, air-dried naturally, bagged and sealed to make a bacterial agent. The sulfate-reducing bacteria (Desulfovibrio desulfuricans), ...

Embodiment 3

[0041] The preparation method of the acidic soil conditioner of the present embodiment may further comprise the steps:

[0042](1) Microbial agent preparation: Take 5g of glucose, 5g of beef extract, 10g of peptone, 5g of NaCl and 1L of distilled water and mix well, adjust the pH value to 7.0, and sterilize to obtain the primary medium; After being transferred to the primary medium prepared above, they were cultured separately for 48 hours at a temperature of 37°C and a rotational speed of 250r / min; after mixing the obtained strains according to the weight ratio of wet bacteria, they were added to the prepared Amplify in the obtained primary culture medium, expand and cultivate for 48 hours at a temperature of 37°C and a rotation speed of 250r / min to obtain a fermentation broth; The bran is mixed evenly according to the mass ratio of 30:1 to the mixed bacteria, air-dried naturally, bagged and sealed to make a bacterial agent. The sulfate-reducing bacteria (Desulfovibrio desul...

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Abstract

The invention discloses an acidic soil conditioner; a microbial composite bacterial agent is prepared by mixing Desulfovibrio desulfuricans, Bacillus subtilis, Bacillus megaterium and Bacillus licheniformis according to a mass ratio of (3-10):1:1:1. The prepared microbial composite bacterial agent is mixed with plant ash, peat and nitrogen phosphorus potassium fertilizer at a mass ratio of (1-3):(50-100):(100-200):(7-12). The acidic soil conditioner is capable of improving activity of microbes in acidic soil and lowering the content of sulfate radicals in the acidic soil while adjusting pH of the acidic soil, comprehensive soil conditioning is achieved, and crop yield is increased.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, in particular to a microbial fertilizer for repairing acidic soil and a preparation method thereof. Background technique [0002] Soil acidification refers to the process of increasing hydrogen ions in the soil or the process of soil acidity changing from low to high. It is a continuous natural process. Mainly due to the extensive use of chemical fertilizers, especially the use of acidic fertilizers, such as the frequent use of ammonium sulfate and potassium sulfate, after the ammonium and potassium are absorbed, the remaining sulfate radicals are hydrolyzed with strong acidity, resulting in soil acidification. The acidified soil will significantly reduce the adsorption of calcium, magnesium, potassium and other nutrient ions, making the soil more and more barren, and as the pH value decreases, the mineral structure and organic complex manganese, aluminum, etc. are activated , so that a...

Claims

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Application Information

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IPC IPC(8): C05G3/04C09K17/40C12N1/20C09K101/00C09K109/00C12R1/125C12R1/11C12R1/10C12R1/01C05G3/80
CPCC09K17/40C12N1/20C05D1/00C09K2101/00C09K2109/00C05G3/80C05F11/02C05F11/08C05G1/00
Inventor 谢婧婧宋天顺
Owner NANJING UNIV OF TECH
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