13 results about "Biological soil crust" patented technology

The invention belongs to the technical field of desertification ecological restoration equipment, particularly relates to a sandstorm-proof soil crust spray-seeding device, and provides the following scheme aiming at the problems that functional modules of an existing device are isolated and lack of cooperation, and materials are easily interfered and are insufficient in pretreatment in a sandstorm environment: the sandstorm-proof soil crust spray-seeding device comprises a spray-seeding bottom plate and a spray-seeding mechanism integrated on the spray-seeding bottom plate, the spray-seeding mechanism comprises a fungicide spraying assembly, a water-retaining agent spraying assembly and a seeding assembly which are sequentially arranged in the advancing direction, a square windproof cover is arranged on the outer side of a spray-seeding part of the device, a microenvironment air curtain assembly is arranged, air is sucked in through air inlet micropores in the windproof cover, and then a downward adjustable isolation air curtain is formed from bottom air outlet holes; materials are prevented from drifting away. Through deep integration of time sequence spray-seeding, targeted stirring, environment control and intelligent linkage, the problems that in the prior art, the function is single, materials are prone to losing efficacy, and environment interference is large are solved, and the purpose of efficient artificial biological soil crust construction in the complex sand environment is achieved.

The invention provides a desertification land ecological restoration method based on algae-moss composite biological soil crust. The method comprises the steps of algae and moss species screening, algae propagation, moss propagation and algae-moss co-culture, resistance domestication treatment, preparation of an algae-moss composite particle inoculant, soil preparation and microtopography optimization, field application of the algae-moss composite particle inoculant and maintenance after inoculation. According to the invention, the crust forming speed and structural stability can be obviously improved, the wind erosion resistance, water retention and nutrient fixation capabilities are enhanced, and long-term stable ecological restoration of the desertification land is realized.

The invention provides a composite microalgae preparation constructed for biological crust as well as a preparation method and application of the composite microalgae preparation, and relates to the technical field of biological soil crust repair. The composite microalgae preparation comprises chlorella with the number of FACHB-2900, chlamydomonas with the number of FACHB-1935, a sodium alginate aqueous solution and a calcium lignosulphonate aqueous solution, wherein the chlorella is purchased from a freshwater algae seed bank of Chinese Academy of Sciences. After the composite microalgae preparation is applied, the components of the sodium alginate and the calcium lignosulphonate immediately form a layer of viscous and hygroscopic liquid mulching film on the surface layer of soil, and the mulching film can be used for bonding soil particles, reducing raindrop impact and keeping moisture. In the protective layer, the fixed microalgae are activated by environmental moisture and illumination to restore activity, start to grow and perform photosynthesis, and quickly convert into a living and self-sustaining biological soil crust, so as to quickly protect and repair exposed soil.

This application relates to the field of sand control technology, and particularly to a biological crusting sand fixation method for use in sandy areas near photovoltaic power stations. The biological crusting sand fixation method includes the following steps: dividing the sandy area of ​​the photovoltaic power station into a planting zone, a water collection zone, and a sand fixation zone; the planting zone encompasses the area of ​​the orthographic projection of the photovoltaic panels onto the sandy area; the water collection zone includes the area extending outwards by d3 from the orthographic projection line of the lower side of the photovoltaic panels onto the sandy area, where 10cm≤d3≤30cm; the sand fixation zone includes the area between any two photovoltaic panels that is not part of the water collection zone; performing a first water retention treatment on the planting zone; a second water retention treatment on the water collection zone; a third water retention treatment on the sand fixation zone; inoculating algae seed sources into the sand fixation zone, and after 4-6 weeks of growth, inoculating lichen seed sources into the planting zone. This biological crusting sand fixation method has high sand fixation efficiency, good long-term stability, low water replenishment cost, and a high success rate of biological colonization.

The application discloses a kind of coral island biological soil crust GZS001 that can promote the hydrological ecological characteristics of coral island calcareous sand, with good hydrological ecological effect, can significantly improve the ecological freshwater accumulation and circulation of coral island calcareous sand, provide stable water resources for the planting of higher vegetation, improve the nutritional status of calcareous sand, and lay a good material foundation for the ecological system repair and natural succession of coral island. At the same time, the application of this biological crust can reduce the impact on the environment, and can be widely used, with the advantages of simple operation, low cost, quick effect, easy popularization, etc.

This invention discloses the construction and application of a biocrust based on algae-fungus-bryophyte symbiosis on bare red soil slopes, belonging to the field of ecological restoration technology. By screening dominant species of algae, microorganisms, and mosses suitable for acidic, nutrient-poor, and highly volatile red soil habitats, and optimizing the symbiotic ratio and inoculation / planting techniques, a stable and highly efficient algae-fungus-bryophyte symbiotic biocrust is constructed. This biocrust can significantly improve the physical and chemical properties of bare red soil slopes, enhance soil water retention and interception capacity, inhibit ineffective water evaporation, promote seed germination and seedling establishment, and enhance slope erosion resistance. The construction method of this invention is simple to operate, low in cost, ecologically adaptable, and fast in planting, enabling rapid vegetation cover and ecosystem restoration of bare red soil slopes. It is applicable to ecological management and restoration projects in various bare red soil slope areas, such as abandoned mining sites, highway / railway slopes, bare red soil hillsides, and soil erosion areas.

The application provides a kind of biological soil crust source microbial inoculant and its application, when specifically applied to lettuce, including seed disinfection, plate germination, potting, irrigation and culture in later stage and harvest.In the planting of lettuce seedling, rhizosphere response type fertilizer is applied, which can automatically adjust the release rate of nutrients according to the change of rhizosphere pH, and plays the role of intelligent fertilizer supply;In the later stage of lettuce growth, sodium alginate composite water locking liquid is irrigated, water retaining gel is formed in the rhizosphere and zinc and phosphorus nutrients are released, realizing the dual effect of water retention and precise fertilizer supply.The application effectively improves the water and fertilizer utilization efficiency through the time sequence cooperation of the two kinds of functional preparations, and promotes the healthy growth of lettuce in all directions.

The invention discloses an intelligent desert ecological restoration system, and belongs to the technical field, the intelligent desert ecological restoration system comprises a condensed water collection device, the condensed water collection device comprises a collection device, and the bottom of the collection device is communicated with a water storage device; the rapid growth device for the biological soil crust comprises moisturizing equipment and nutrition supply equipment which are respectively connected with water storage equipment, and further comprises a culture substrate layer and intelligent monitoring equipment for monitoring the culture substrate layer. The water storage device of the condensed water collection device is connected with the moisturizing device and the nutrition supply device of the biological soil crust rapid growth device, the intelligent monitoring device carries out unified management and coordination on the whole system, and intelligent and efficient operation of condensed water collection and biological soil crust cultivation is achieved; the integrated device of the condensed water collecting device and the biological soil crust rapid growth device has the advantages of being efficient, intelligent, high in adaptability and the like, and an innovative solution is provided for desert ecological management.

The application discloses a method for effectively improving survival rate of cryptogamic plants in an extremely arid sandy area, and relates to the field of biological soil crusts. The method comprises the following steps: establishing a crust nursery, selecting a complex microbial colony which is treated by simulating natural adversity as field inoculation material, adopting a fusional crust field breeding box arranged in a row and column mode to carry out field breeding, planting into drifting sand with the convex surface of the arc-shaped protective cover facing the wind direction, inoculating the complex microbial colony material on the first platform, and placing water-retaining slow-release fillers on the second platform; and planting special crown shrubs in the interspaces of the fusional crust field breeding box. The method solves the problems of insufficient traditional inoculation material, single variety, poor adaptability, extensive cryptogamic plant inoculation mode, simple breeding technology, poor habitat, and missing auxiliary materials, improves the survival rate of cryptogamic plants, promotes the formation of biological soil crusts, and is suitable for the extremely arid sandy area.

The invention discloses a method for effectively improving the field survival rate of cryptans in an extremely arid desert area, which comprises the following steps: establishing a crust nursery, and selecting a compound microorganism population subjected to simulated natural stress crust refining treatment as a field inoculation material; fusion type crust field breeding boxes arranged in a determinant mode are adopted to carry out field breeding, quicksand is planted in the arc-shaped protective cover with the convex face facing the incoming wind direction, a first platform is inoculated with a compound microorganism colony material, and a second platform is provided with water-retaining slow-release filler; special crown shrubs are planted between rows of the fusion type crust field breeding box; according to the method disclosed by the invention, the problems of insufficient traditional inoculation materials, single variety, poor adaptability, extensive cryptandra inoculation modes, simple breeding technology, severe habitat, lack of auxiliary materials and the like are solved by virtue of the cooperation of three technologies of a compound microorganism population, a fusion type crust field breeding box and special crown shrub shading, the survival rate of cryptandra is increased, and the survival rate of cryptandra is increased. Crust forming of biological soil is promoted, and the method is suitable for extreme drought desert areas.

The application discloses a kind of biological soil crust spray seeding devices, belongs to the technical field of soil crust.The device integrates crust collection, crushing, mixing and spray seeding function by moving frame, solves the problem of high cost and low equipment utilization caused by the stage operation of multiple equipment in the prior art.The main body of the device is composed of a moving frame, a shovel plate, a crushing box and a mixing cylinder.The rotating shovel plate is arranged on the top of the moving frame to collect the surface crust, and the crust is collected by the cooperation of the guide plate and the groove.The crushing box is connected to the mixing cylinder by a communication pipe, the double crushing rollers are arranged in the crushing box, and the stirring shaft is arranged in the mixing cylinder.The collection structure uses a combination of conveyor belt and storage box to convey the crust, and the mixing structure uses synchronous wheel transmission to link the crushing rollers and the stirring shaft.The spray pipe assembly generates negative pressure to adsorb the mixed crust by using a compression air pump.The device integrates multiple process functions by using a single moving frame, significantly reduces equipment cost, improves work efficiency, and is suitable for crust spray seeding operation in desert management field.

This invention belongs to the technical field of desertification ecological restoration equipment, and particularly relates to a windbreak and sand-resistant soil crust spraying device. Addressing the problems of isolated functional modules, lack of coordination, and susceptibility to material disturbance and insufficient pretreatment in windy and sandy environments, the invention proposes the following solution: a spraying base plate and a spraying mechanism integrated thereon. The spraying mechanism includes a microbial agent spraying component, a water-retaining agent spraying component, and a seeding component arranged sequentially along the direction of travel. A square-shaped windproof cover is provided on the outside of the spraying area, along with a microenvironment air curtain component. Air is drawn in through micro-intake holes on the windproof cover and then forms a downward-facing adjustable isolation air curtain from the bottom air outlet, preventing material dispersion. This invention, through deep integration of sequential spraying, targeted mixing, environmental control, and intelligent linkage, solves the problems of single function, easy material failure, and significant environmental interference in existing technologies, achieving the goal of efficient artificial biological soil crust construction in complex windy and sandy environments.

The application discloses a cyanobacterium SCSIO17256 with high yield of exocellular polysaccharide and application of the cyanobacterium in anti-erosion of a coral island. The cyanobacterium is named as cyanobacterium Oculatella sp. SCSIO17256, and the preservation number is CCTCC NO: M2025524. The cyanobacterium Oculatella sp. SCSIO17256 provided by the application can effectively promote formation of a calcareous sand biological crust, has strong sand-fixing capacity, and has very strong shear resistance, and can be applied to prevention and treatment of water and soil loss of the coral island and construction of the calcareous sand biological soil crust of the coral island. Compared with physical sand-fixing, chemical sand-fixing and vegetation cultivation, the use of the microorganism as a new type of sand-fixing and cultivation crust has the advantages of strong adaptability, low cost, quick effect, etc.