Inoculation method of desert alga artificial biological crusts for sand stabilization

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

Active Publication Date: 2015-11-18
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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  • Inoculation method of desert alga artificial biological crusts for sand stabilization
  • Inoculation method of desert alga artificial biological crusts for sand stabilization

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, and precipitate when the biomass exceeds 0.2g / L, 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 30mL / (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 inoculatio...

Embodiment 2

[0044] Use simplified BG11 medium to culture 10,000L Microtheca sp. 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 slurry; 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%; 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±0.3Kg / cm 2 , significantly higher...

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Abstract

The invention discloses an inoculation method of desert alga artificial biological crusts for sand stabilization. The method comprises the steps that 1, sodium alginate is dissolved in water to form a sticky solution with the mass fraction of 1%-5%; 2, desert algae are cultivated and then collected until the biomass of the desert algae exceeds 0.2 g per liter culture, and alga slurry is obtained after supernatant is removed; 3, the corresponding alga slurry and sodium alginate are mixed according to different inoculation areas, and inoculation is performed after the alga slurry and the sodium alginate are mixed evenly; 4, the inoculated artificial crusts are conventionally maintained according to the water content of a sand bed, the inoculated artificial crusts are maintained when the water content of the sand bed is lower than 20 percent, and the maintenance time does not exceed 15 days. The method is feasible and easy and convenient to operate; physical-biological mixed crusts can be formed at the beginning of inoculation of the desert algae, the mature biological crusts are formed when the desert algae in the crusts grow and develop to a certain extent, and the fixing effect of the artificial crusts on sandy soil is greatly accelerated.

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 Applications(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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