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Novel sand fixing method of terraneous nitrogen fixation blue algae

A technology of nitrogen-fixing cyanobacteria and a new method, which is applied in the field of sand-fixing biology and sand control in arid areas, and can solve the problems of large investment and environmental pollution of chemical sand-fixing agents

Inactive Publication Date: 2006-02-15
XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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Problems solved by technology

It is characterized by quick results, but it requires a lot of investment. Some chemical sand fixation agents pollute the environment and are currently in the trial process.

Method used

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Embodiment

[0011] a. Cyanobacteria cultivation: The algae used is the existing Scytonema ocellatum Lynbye, which belongs to the genus Scytonema Ag. of the family Scytonemataceae, and is isolated from Gurbantunggut, Xinjiang. The natural desert crust of the desert is carried out in a conventional light cultivation room in the form of liquid or solid, and is cultured and separated by conventional IAM collection medium to obtain a pure culture;

[0012] b. For the expanded cultivation of algae species, use De medium for single species culture, inoculate the pure culture of algae species, the culture temperature is 25-28 ° C, and the light intensity is 3500-8000 lux;

[0013] c. Inoculation environment: Sandy soil, annual precipitation ≥ 100mm, and winter snowfall of 15-20cm disturbed sand dune activation area to take sand samples, use a Φ1mm sieve to remove large particles of debris, 15Mpa, 50min damp heat sterilization, inoculation of nitrogen-fixing cyanobacteria culture Illuminated by na...

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Abstract

This invention relates to new consolidation sand method with terraneous nitrogen fixation blue-green algae, which is completed by the following steps: blue-green algae foster, inoculation environment, inoculation time and inoculation quantity, and it uses the microorganism technology such as terraneous nitrogen fixation blue-green algae to achieve the fast consolidation of the flowing sand in the fixed and the half fixed desert area and achieve the ecology rehab in the engineering trouble area of the fixed and half fixed desert area. The applied nitrogen fixation blue-green algae can do photosynthesis by itself by the limited precipitation in desert, it grows up, and produces hull, which achieves the purpose of adding organic matter in soil and improving the structure of the soil and preventing and consolidating sands.

Description

technical field [0001] The invention relates to a new sand-fixing method for terrestrial nitrogen-fixing cyanobacteria, which is suitable for the biological technology field of sand prevention and sand fixation in arid areas. Background technique [0002] For desertification prevention and control, the main measures at present are: physical protection: such as the setting of sand barriers and grass grids. It is characterized by quick results, but the investment is large, and large-scale application is hindered; chemical protection: such as spraying of chemical crusts, an impermeable film is formed on the sand surface, and then plays a role in fixing the sand surface. It is characterized by quick results, but requires a lot of investment. Some chemical sand-fixing agents pollute the environment and are currently being tested. Biological protection: It is mainly to plant shelter forests on the edge or hinterland of the desert to reduce the wind speed in th...

Claims

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Application Information

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IPC IPC(8): E02D3/00C12N1/12
Inventor 杨玉锁蒋进徐新文雷加强
Owner XINJIANG INST OF ECOLOGY & GEOGRAPHY CHINESE ACAD OF SCI
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