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Method for repairing saline-alkali soil by culturing indigenous microorganisms and application of method

A technology for microbial remediation and saline-alkali land, applied in the field of environmental microorganisms, can solve problems such as risks caused by exogenous microorganisms, and achieve the effects of improving remediation efficiency, simple process, and avoiding ecological pollution

Pending Publication Date: 2022-05-13
自然资源部天津海水淡化与综合利用研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Based on the above research, it can be seen that biological measures are widely used to restore saline-alkali land, but there are still some limitations in its efficacy in repairing saline-alkali land, and the introduction of exogenous microorganisms will cause risks.

Method used

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  • Method for repairing saline-alkali soil by culturing indigenous microorganisms and application of method
  • Method for repairing saline-alkali soil by culturing indigenous microorganisms and application of method
  • Method for repairing saline-alkali soil by culturing indigenous microorganisms and application of method

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Embodiment 1

[0083] This embodiment provides a method for cultivating indigenous microorganisms to repair saline-alkali soil, comprising the following steps:

[0084] (1) Sampling 500g of the soil at detection points 1, 2, and 3 of the saline-alkaline land respectively, the sampling depth is 0-50cm, fully mix, weigh 500g after mixing and place it in a bucket with stirring, add 5L deionized water, and Stir at 80r / min for 30min, discard the bottom sludge, and obtain a saline-alkali soil suspension;

[0085] (2) Take 4.5L of the soil suspension obtained in step (1) and add it to a bucket with stirring, then add 450L of deionized water, add 45L of nutritional enhancer, stir for 10min every 2h, and continuously cultivate for 3d to obtain indigenous microorganisms Amplification solution 495.5L;

[0086] (3) Add 100L nutrient enhancer to the 495.5L indigenous microorganism amplification solution described in step (2), and spray evenly to 750m through pipeline spraying facilities 2 In the soil o...

Embodiment 2

[0090] This embodiment provides a method for cultivating indigenous microorganisms to repair saline-alkali soil, comprising the following steps:

[0091] (1) Sampling 500g of the soil at detection points 1, 2, and 3 of saline-alkali land respectively, the sampling depth is 0-50cm, fully mix, weigh 500g after mixing and place it in a bucket with stirring, add 8L deionized water, and Stir at 60r / min for 40min, discard the bottom sludge, and obtain a saline-alkali soil suspension;

[0092] (2) Take 5L of the soil suspension obtained in step (1) and add it to a bucket with stirring, then add 500L of deionized water, add 75L of nutritional enhancer, stir for 8min every 1.5h, and continuously cultivate for 5d to obtain indigenous microorganisms Amplification solution 580L;

[0093] (3) Add 145L nutrient enhancer to the 580L indigenous microorganism amplification solution described in step (2), and spray evenly to 750m through pipeline spraying facilities 2 In the soil of saline-al...

Embodiment 3

[0097] This embodiment provides a method for cultivating indigenous microorganisms to repair saline-alkali soil, comprising the following steps:

[0098] (1) Sampling 600g of the soil at detection points 1, 2, and 3 of the saline-alkaline land respectively, the sampling depth is 0-50cm, fully mix, weigh 600g after mixing and place it in a bucket with stirring, add 4L deionized water, and Stir at 100r / min for 30min, discard the bottom sludge, and obtain a saline-alkali soil suspension;

[0099] (2) Take 20L of the soil suspension obtained in step (1) and add it to a bucket with stirring, then add 1800L of deionized water, add 360L of nutritional enhancer, stir for 15min every 3h, and continuously cultivate for 2 days to obtain indigenous microorganisms Amplification solution 2180L;

[0100] (3) Add 650L nutrient enhancer to the 2180L indigenous microbial amplification solution described in step (2), and spray evenly to 750m through pipeline spraying facilities 2 In the soil o...

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Abstract

The invention provides a method for repairing saline-alkali soil by culturing indigenous microorganisms and application thereof, and the method for repairing saline-alkali soil by culturing indigenous microorganisms comprises the following steps: (1) mixing saline-alkali soil suspension and a nutrient supplement, and culturing to obtain indigenous microorganism amplification liquid; and (2) spraying a nutrition enhancer and the indigenous microorganism amplification liquid obtained in the step (1) to the saline-alkali soil. According to the method for repairing the saline-alkali soil, the saline-alkali soil is directly added into the saline-alkali soil for in-situ repairing, external microorganisms do not need to be added, the operation process is simple, and the conductivity and the total amount of water-soluble salt in the saline-alkali soil can be rapidly reduced.

Description

technical field [0001] The invention belongs to the technical field of environmental microorganisms, and in particular relates to a method for cultivating indigenous microorganisms to repair saline-alkali soil and its application. Background technique [0002] The main causes of soil salinization include primary salinization and secondary salinization, resulting in a large content of soluble salt in the soil, which is not conducive to the normal growth of crops. As land salinization becomes more and more serious, the area of ​​available cultivated land is continuously squeezed, which seriously restricts the sustainable development of agriculture and food security in our country. Therefore, the comprehensive management of saline-alkali soil has become a major task without delay. [0003] For the remediation of saline-alkali soil, there are mainly engineering schemes, chemical schemes and biological schemes. Among them, the engineering plan mainly includes operations such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02C12N1/38
CPCA01B79/02C12N1/38
Inventor 司晓光曹军瑞张爱君姜天翔张晓青杜瑾
Owner 自然资源部天津海水淡化与综合利用研究所
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