A kind of inoculation method of desert algae artificial biological crust and sand fixation

A desert algae and artificial technology, applied in the fields of botanical equipment and methods, horticultural methods, plant cultivation, etc., can solve problems such as weak sand fixation effect, and achieve the effects of reducing water transpiration, making full use of it, and improving compressive strength.

Active Publication Date: 2017-07-21
INST OF AQUATIC LIFE ACAD SINICA
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AI Technical Summary

Problems solved by technology

[0005] In the existing artificial crust sand-fixing technology, the newly inoculated desert algae have not yet formed an effective algal crust on the surface of the desertified soil, and the sand-fixing effect is weak. Only after a period of growth and development can the algal crust with good sand-fixing effect be formed.

Method used

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  • A kind of inoculation method of desert algae artificial biological crust and sand fixation
  • A kind of inoculation method of desert algae artificial biological crust and sand fixation

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Use simplified BG11 medium to culture 10,000L Microtheca sheaths in a track-type culture tank with natural light. When the biomass exceeds 0.2g / L, precipitate, remove part of the supernatant and collect to obtain 5,000L of algae pulp; 1,000g of industrial Dissolve high-grade sodium alginate in 100L of water to make a viscous solution with a mass fraction of 1%; mix the algae pulp and sodium alginate evenly for inoculation, and the inoculation amount of desert algae is 2g·DW / m 2 , the dosage of sodium alginate is 1g / m 2 ; Within 15 days after inoculation, when the water content of the sand layer is lower than 20%, use micro-spray watering, spray water once every 3 or 4 hours, each time for 10 or 15 or 20 minutes, and the water flow rate is 30 mL / (m 2 min), stop water spraying after 15 days, and finally realize natural growth; during this process, apply 1 or 2 times of diluted BG11 culture solution according to the situation.

[0042] On the second day after inoculation,...

Embodiment 2

[0044] Use simplified BG11 medium to culture 10,000L Microtheca sheathis and 10,000L Pseudocladon sp. in a track-type culture tank under natural light. When the biomass of both exceeds 0.2g / L, precipitate and remove part of the supernatant before collecting , respectively obtain 5000L algae pulp; two kinds of desert algae are mixed according to the ratio of biomass of 1:1; 2000g industrial grade sodium alginate is dissolved in 100L water to make a viscous solution with a mass fraction of 2%; the algae pulp Mix evenly with sodium alginate for inoculation, the inoculation amount of desert algae is 2g·DW / m 2 , the dosage of sodium alginate is 2g / m 2 ;

[0045] The conventional maintenance procedure for inoculating desert algae is the same as in Example 1.

[0046] On the second day after inoculation, a hard physical-biological mixed crust can be formed on the surface of the sand layer, which can effectively fix the sandy soil. Crust compressive strength is 2.1±0.3 Kg / cm 2 , w...

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Abstract

The invention discloses an inoculation method for desert algae artificial biological crust and sand fixation. The steps are: A. dissolving sodium alginate in water to form a viscous solution with a mass fraction of 1%-5%; B. dissolving desert algae The algae are cultivated until the biomass of desert algae per liter of culture exceeds 0.2g, and the algal pulp is obtained after removing the supernatant; C. According to the difference in inoculation area, mix the corresponding algal pulp with sodium alginate, mix well and carry out Inoculation; D. After inoculation, the artificial crust should undergo routine maintenance according to the water content of the sand layer. When the water content of the sand layer is lower than 20%, the maintenance should be carried out, and the curing time should not exceed 15 days. The method is easy to implement and easy to operate. This method can form a physical-biological mixed crust at the beginning of the desert algae inoculation. After the desert algae in the crust grows to a certain extent, a mature biological crust will be formed, which greatly accelerates the process. The immobilization effect of artificial crust on sandy soil.

Description

technical field [0001] The invention relates to the technical field of desert algae comprehensive sand fixation, and more specifically relates to an inoculation method for desert algae artificial crust sand fixation. Background technique [0002] Nearly one-third of the world's land is threatened by desertification. my country's desertified land area is 2.674 million square kilometers, accounting for 27.9% of the country's land area, and nearly 400 million people are affected by desertification. The governance of desertification is a common problem faced by many countries in the world. The wind and sand are raging, the land is barren, the water is severely lacking, and the heat and cold are uneven. Under such extreme weather, most organisms cannot survive, which brings insurmountable difficulties to the control of desertification. There are many ways to combat desertification, physical methods, chemical methods and biological methods, among which biological methods are stil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G1/00A01G7/06
CPCA01G7/06A01G22/00
Inventor 彭成荣李敦海李双双郑娇莉胡瑶
Owner INST OF AQUATIC LIFE ACAD SINICA
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