A method for growing desert algae

Abstract

The present invention provides a method for planting desert algae, and relates to the technical field of planting desert algae. The method for planting desert algae adopts soil suitable for planting desert algae, and the soil is mixed with sandy soil, stony soil, regulating particles and nutrient particles, and the volume ratio is 45% of sandy soil, 50% of stony soil, 2.5% of regulating particles and 2.5% of nutrient particles. The planting soil is mixed with sandy soil, stony soil, regulating particles and nutrient particles. The sandy soil and stony soil have good drainage and air permeability, which prevents the soil from absorbing too much water. The pH and salt of the sandy soil and the stony soil are neutralized by regulating particles to achieve the best growth regulation of desert algae. The trace elements contained in the nutrient particles provide the desert algae with the nutrient supply required in the early growth stage, so as to provide the best growth environment for desert algae.

Description

Technical Field

[0001] The invention relates to the technical field of desert algae cultivation, in particular to a method suitable for desert algae cultivation. Background Art

[0002] Desert algae are a type of algae that can survive in harsh environments such as extreme drought, high temperature, and high salinity. They have important research value and application potential in the fields of ecology, biotechnology, and environmental science. Desert algae can survive in an environment with extremely scarce water. They can adapt to drought conditions by reducing water evaporation and improving water use efficiency. In the process of desert management, planting desert algae for sand fixation and greening can help improve soil structure and increase soil fertility, which is faster than the benefits of planting trees. The soil conditions for planting desert algae are not harsh. Desert algae can grow well in water-scarce and nutrient-poor deserts, but in the desert, the soil for planting cannot have good water-collecting properties, and excessive water can easily inhibit the growth of desert algae.

[0003] In the existing soil suitable for desert algae cultivation, the planting location is selected in the desert, and the pH value, salt content, sunlight exposure and ventilation conditions of the planting location are selected. After the selection, the pH value and salt content of the selected location need to be neutralized and adjusted. The operation process is relatively long, and after sowing, the desert algae need to be covered with a ground film. The film is relatively cumbersome in the subsequent processing process of use, and improper processing is likely to affect the environment. Therefore, those skilled in the art provide a method suitable for desert algae cultivation to solve the problems raised in the above background technology. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a method suitable for desert algae cultivation, which solves the problem that the pH and salt content of the selected location need to be neutralized and adjusted after selection, and the operation process requires a long time. After sowing, the desert algae need to be covered with a ground film. The subsequent processing of the film is relatively cumbersome, and improper handling can easily affect the environment.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented by the following technical solutions: a method suitable for planting desert algae, using soil suitable for planting desert algae, the soil is a mixture of sandy soil, rocky soil, conditioning particles and nutrient particles, with a volume ratio of 45% sandy soil, 50% rocky soil, 2.5% conditioning particles and 2.5% nutrient particles;

[0008] The sandy soil is composed of coarse sand particles with a diameter of 0.5-2 mm. These particles have gaps, so the soil has good aeration and drainage, a loose structure and a rough texture.

[0009] The stony soil contains a large amount of stones or gravel, and its soil particles are more complex than sandy soil, with a diameter of 3-20 mm, and have better drainage and aeration;

[0010] The conditioning particles are added according to the pH values ​​of the sandy soil and the rocky soil to neutralize the pH values ​​of the sandy soil and the rocky soil;

[0011] The nutrient particles are used to supply nutrients required for the growth of desert algae in the initial stage of planting.

[0012] Preferably, the conditioning particles are one or more of green manure, gypsum, limestone, sulfur and aluminum sulfate. Green manure and gypsum can reduce the salt content in the soil, limestone can neutralize acidic soil, sulfur and aluminum sulfate can neutralize alkaline soil. The addition ratio is determined according to actual conditions to ensure the pH and salinity of the desert algae growth environment.

[0013] Preferably, the nutrient particles are crystals containing nitrogen, phosphorus and potassium trace elements, and have a diameter between 1-2 mm. After the crystals encounter water molecules, the water molecules react chemically with the nutrient molecules in the nutrient particles, releasing the nutrient molecules from the fertilizer particles. Through slow decomposition, the nutrients are provided to the desert algae for a long time, thereby ensuring the growth of the desert algae.

[0014] The specific planting method includes the following steps:

[0015] S1. Location selection: Look for sandy or gravelly soil in the desert with good water permeability, sufficient sunlight and ventilation to accommodate the growth of desert algae;

[0016] S2. pH measurement, measuring the pH and salinity of the soil at the selected location to obtain the pH and salinity;

[0017] S3. Neutralization: Based on the pH data measured above, the pH of the soil at the selected location is neutralized to

[0018] Between 6.0 and 12.0, salinity is 100-400mmol / L;

[0019] S4. Sand fixation: planting multiple rows of straw at the edge of the selected location through planting equipment to prevent soil loss;

[0020] S5. Soil laying: evenly spread the mixed sandy soil, rocky soil, conditioning particles and nutrient particles at the selected location;

[0021] S6. Spreading and covering, spreading desert algae fragments through a spreading device, and then covering the spread section with a degradable film;

[0022] S7. Growth monitoring: Regularly check the growth of desert algae, including coverage area, growth density, health status, soil moisture, temperature, pH value and salinity, to ensure that they are within the appropriate range, and evaluate the effects of desert algae cultivation on soil improvement, water conservation, ecological restoration, etc.

[0023] Preferably, in step S6, the degradable film is spread manually or with a spreading device, and the material of the degradable film is one or more of corn starch, sugarcane fiber, and polylactic acid. The carbon dioxide and water produced by degradation are used to replenish the desert algae with water, and at the same time, the degradable film can ensure that water will not be lost when it is not degraded.

[0024] Preferably, in step S4, multiple rows of straw are planted at the edge of the selected location by planting equipment to prevent soil loss. After planting multiple rows of straw by the planting equipment, a barrier is formed to block the fluidity of the soil, ensuring that the desert algae will not be affected by soil loss after planting.

[0025] Preferably, in step S5, the soil is transported to the selected location by a vehicle, and the soil is evenly spread at the selected location manually or with a spreading device.

[0026] Preferably, in step S3, the detection result in step S2 is calculated, and after the required neutralization amount is calculated, the neutralized conditioning particles are added to the mixed soil. After the mixed soil is laid, the pH and salinity of the soil at the selected location are neutralized to reduce the workload.

[0027] (III) Beneficial effects

[0028] The present invention provides a method for growing desert algae. It has the following beneficial effects:

[0029] 1. In the present invention, the planting soil is composed of sandy soil, rocky soil, regulating particles and nutrients.

[0030] The particles are mixed, and the sandy soil and rocky soil have good drainage and ventilation, which prevents the soil from absorbing too much water. The pH and salinity of the sandy soil and rocky soil are neutralized by regulating the particles to achieve the best growth regulation of desert algae. The trace elements contained in the nutrient particles provide the desert algae with the nutrients it needs in the early stages of growth, thereby providing the best growth environment for desert algae.

[0031] 2. In the present invention, soil is laid at a selected position, and then desert algae fragments are sown on the soil for sowing. A degradable film is covered on the desert algae fragments, which retains a certain amount of moisture and temperature for the desert algae. At the same time, the water and carbon dioxide produced after degradation can provide a small amount of moisture for the desert algae, providing sufficient moisture for the growth of the desert algae, and the growth of the desert algae will not be inhibited due to excessive moisture.

[0032] 3. In the present invention, after detecting the pH and salinity of the selected planting location, a certain proportion of regulating particles are added to the soil, and the pH and salinity of the selected location are neutralized after the soil is laid, thereby providing a guarantee for the growth environment of desert algae and reducing the treatment process for neutralizing the pH and salinity of the selected location, saving manpower and material resources while improving the efficiency of planting. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a diagram of the experimental results of the present invention. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1:

[0036] An embodiment of the present invention provides a method for growing desert algae, which uses soil suitable for growing desert algae. The soil is a mixture of sandy soil, rocky soil, regulating particles and nutrient particles, with the volume ratio of 45% sandy soil, 50% rocky soil, 2.5% regulating particles and 2.5% nutrient particles.

[0037] Sandy soils are composed of coarse sand particles with a diameter of 0.5-2 mm.

[0038] The soil has good aeration and drainage, loose structure and rough texture.

[0039] Stoney soil contains a lot of stones or gravel. Its soil particles are more complex than sandy soil, ranging from 3-20 mm in diameter, and have better drainage and aeration.

[0040] Regulating particles are added according to the pH value of sandy soil and rocky soil to neutralize the pH value of sandy soil and rocky soil.

[0041] Nutrient granules are used to supply nutrients required for the growth of desert algae cultivation.

[0042] The regulating particles are one or more of green manure, gypsum, limestone, sulfur and aluminum sulfate. Green manure and gypsum can reduce the salt content in the soil, limestone can neutralize acidic soil, sulfur and aluminum sulfate can neutralize alkaline soil. The addition ratio is determined according to the actual situation to ensure the pH and salinity of the desert algae growth environment.

[0043] The nutrient particles are crystals containing trace elements such as nitrogen, phosphorus, and potassium, with a diameter between 1-2 mm. When the crystals encounter water molecules, the water molecules react chemically with the nutrient molecules in the nutrient particles, releasing the nutrient molecules from the fertilizer particles. Through slow decomposition, they provide some nutrients for the desert algae over a long period of time, ensuring the nutritional supply during the initial growth of the desert algae.

[0044] The specific planting method includes the following steps:

[0045] S1. Location selection: looking for sandy or gravelly soil in the desert. The soil in the selected location has good water permeability to ensure that there will be no water accumulation in the subsequent process, and has sufficient sunlight and ventilation to adapt to the growth of desert algae;

[0046] S2. pH measurement, measuring the pH and salinity of the soil at the selected location;

[0047] S3. Neutralization: Based on the pH data measured above, the pH of the soil at the selected location is neutralized to between 6.0 and 12.0, and the salinity is between 100-400 mmol / L. The conditioning particles to be neutralized are mixed into the soil;

[0048] S4. Sand fixation: planting multiple rows of straw at the edge of the selected location through planting equipment to prevent soil loss;

[0049] S5. Soil laying: Mix the sandy soil, rocky soil, conditioning particles and nutrient particles.

[0050] Spread evenly at the selected location;

[0051] S6. Spreading and covering, spreading desert algae fragments through a spreading device, and then covering the spread section with a degradable film;

[0052] S7. Growth monitoring: Regularly check the growth of desert algae, including coverage area, growth density, health status, soil moisture, temperature, pH value and salinity, to ensure that they are within the appropriate range, and evaluate the effects of desert algae cultivation on soil improvement, water conservation and ecological restoration.

[0053] In step S6, the degradable film is spread manually or with a spreading device. The material of the degradable film is one or more of corn starch, sugarcane fiber, and polylactic acid. The carbon dioxide and water produced by degradation are used to replenish the water for the desert algae. At the same time, the degradable film can ensure that water will not be lost when it is not degraded.

[0054] In step S4, multiple rows of straw are planted at the edge of the selected location by planting equipment to prevent soil loss. After planting multiple rows of straw by planting equipment, a barrier is formed to block the fluidity of the soil, ensuring that the desert algae will not be affected by soil loss after planting.

[0055] In step S5, the soil is transported to the selected location by a vehicle, and the soil is evenly spread in the area surrounded by straw for sand fixation at the selected location by manual labor or spreading equipment.

[0056] In step S3, the detection result in step S2 is calculated. After the required neutralization amount is calculated, the neutralized conditioning particles are added to the mixed soil. After the mixed soil is laid, the pH and salinity of the soil at the selected location are neutralized to reduce the workload.

[0057] Embodiment 2:

[0058] In step S3, when the salt content in the soil is too high, the regulating particles are green manure and gypsum, which can reduce the salt content in the soil.

[0059] Embodiment three:

[0060] In step S3, when the soil is acidic, the conditioning particles are limestone, and the acidic soil can be neutralized by the limestone.

[0061] Embodiment 4:

[0062] In step S3, when the soil is alkaline, the conditioning particles are sulfur and aluminum sulfate, and the sulfur and aluminum sulfate can neutralize the alkaline soil.

[0063] Test example: When the soil pH value is too high or too low, or when the salt content is too high, it will affect the growth of desert algae. Adding conditioning particles and nutrient particles can effectively improve the growth efficiency of desert algae.

[0064] Experimental process:

[0065] 1.1 Materials. Soil samples were collected from Yuli County, Bayingolin Mongol Autonomous Prefecture, Xinjiang, and desert algae were isolated using the 10-fold dilution method.

[0066] 1.2 Methods;

[0067] 1.2.1 Cultivation: The BBM medium for culturing desert algae is prepared according to the method of culturing Anharis, and the temperature is 25 to 28 degrees, the light intensity is 800 to 2000 lx, and the light-dark cycle is 18h / 6h;

[0068] 1.2.2 Observation and determination of cell morphology. After growing on BBM solid medium for 7 days, prepare algae suspension under sterile conditions and inoculate into liquid medium for cultivation. When the cells grow to logarithmic growth, take a certain amount of the production, observe the morphology under an optical microscope and use a hemacytometer plate to measure the length and diameter of 50 cells randomly selected. Calculate the volume according to the formula V=6d2short×dlong, and perform scanning and projection electron microscopy observations.

[0069] 1.2.3 Optimum growth pH, ​​algae cells were cultured in 11 triangular flasks, each containing 30 ml of culture medium. Before inoculation, 11 gradients of pH were set at 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, and 13, respectively. The cells were cultured under light for 9 days. Then, according to the results, the same method was used to inoculate the cells with pH values ​​of 6, 7, 8, 9,

[0070] There are 8 gradients of 10, 11, 12, and 13, cultured under light, and counted every day.

[0071] 1.2.4 Salt tolerance, the inorganic salt is NaCl, first prepare 50ml of standard BBM solution containing NaCl, involving 6 salt concentration gradients, add the standard solution to the culture medium in the order of gradually increasing salt concentration from 0.05mol / L, prepare BBM solid culture medium, and culture under streaking light for 9 days.

[0072] 2 Results and analysis;

[0073] 2.1 Observing the cell shape under a microscope and calculating the cell volume, we can see that the cell volume of desert algae is small and flat.

[0074] Average major diameter: 4.65μm, average minor diameter: 4.31μm, average cell volume: 15.7992μm cubed, nearly spherical.

[0075] 2.2 Optimal growth pH, ​​such as Figure 1 As mentioned above, different pH values ​​have different effects on growth, that is, the pH range at the end of the month or higher is 9-12, but the pH with the highest growth rate is 11, so the optimal growth pH is 11.

[0076] 2.3 Salt tolerance. The results of the culture experiment on BBM solid culture medium containing different NaCl concentrations showed that as the salt concentration increased, the growth of desert algae was significantly restricted. When the concentration reached 0.4M, the growth basically stopped, but it could grow in a salt culture medium with a concentration of 0.3M.

[0077] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for growing desert algae, using soil suitable for growing desert algae, the soil is a mixture of sandy soil, rocky soil, conditioning particles and nutrient particles, the volume ratio of which is 45% sandy soil, 50% rocky soil, 2.5% conditioning particles and 2.5% nutrient particles, characterized in that: The sandy soil is composed of coarse sand particles with a diameter of 0.5-2 mm. These particles have gaps, so the soil has good aeration and drainage, a loose structure and a rough texture. The stony soil contains a large amount of stones or gravel, and its soil particles are more complex than sandy soil, with a diameter of 3-20 mm, and have better drainage and aeration; The conditioning particles are added according to the pH values ​​of the sandy soil and the rocky soil to neutralize the pH values ​​of the sandy soil and the rocky soil; The nutrient particles are used to supply nutrients required for the growth of desert algae in the initial stage of planting. The specific planting method includes the following steps: S1. Location selection: Look for sandy or gravelly soil in the desert with good water permeability, sufficient sunlight and ventilation to accommodate the growth of desert algae; S2. pH measurement, measuring the pH and salinity of the soil at the selected location to obtain the pH and salinity; S3. Neutralization: by measuring the pH data above, the pH of the soil at the selected location is neutralized to between 6.0 and 12.0, and the salinity is between 100-400mmol / L; S4. Sand fixation: planting multiple rows of straw at the edge of the selected location through planting equipment to prevent soil loss; S5. Soil laying: evenly spread the mixed sandy soil, rocky soil, conditioning particles and nutrient particles at the selected location; S6. Spreading and covering, spreading desert algae fragments through a spreading device, and then covering the spread section with a degradable film; S7. Growth monitoring: Regularly check the growth of desert algae, including coverage area, growth density, Health status, soil moisture, temperature, pH value and salinity to ensure they are within the appropriate range, and evaluate the effects of desert algae cultivation on soil improvement, water conservation and ecological restoration.

2. A method for growing desert algae according to claim 1, characterized in that: The conditioning material particles are one or more of green manure, gypsum, limestone, sulfur and aluminum sulfate.

3. A method for growing desert algae according to claim 1, characterized in that: The diameter of the nutrient particles is between 1 and 2 mm. After the crystals encounter water molecules, the water molecules react chemically with the nutrient molecules in the nutrient particles, so that the nutrient molecules are released from the fertilizer particles.

4. A method for growing desert algae according to claim 1, characterized in that: In step S6, the degradable film is spread manually or with a spreading device. The material of the degradable film is one or more of corn starch, sugarcane fiber, and polylactic acid. The carbon dioxide and water produced by degradation are used to replenish the water for the desert algae. At the same time, the degradable film can ensure that water will not be lost when it is not degraded.

5. The method for growing desert algae according to claim 1, characterized in that: In step S4, multiple rows of straw are planted at the edge of the selected location by planting equipment to prevent soil loss. After planting multiple rows of straw by planting equipment, a barrier is formed to block the fluidity of the soil, ensuring that the desert algae will not be affected by soil loss after planting.

6. The method for growing desert algae according to claim 1, characterized in that: In step S5, the soil is transported to the selected location by a vehicle, and the soil is evenly spread at the selected location manually or with a spreading device.

7. The method for growing desert algae according to claim 1, characterized in that: In step S3, the detection result in step S2 is calculated. After the required neutralization amount is calculated, the neutralized conditioning particles are added to the mixed soil. After the mixed soil is laid, the pH and salinity of the soil at the selected location are neutralized to reduce the workload.

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