16 results about "Degraded soils" patented technology

The invention discloses a method for evaluating the composite obstacle degree of southern red and yellow soil degraded soil and application. By constructing the southern red and yellow soil composite obstacle index, systematic quantitative evaluation of acid, thin, plate and sticky main soil obstacles is achieved, and the limitation of a traditional single index and a subjective weighting method is broken through. The method is driven by large-scale soil data and has scientificity, objectivity and generalizability. The southern red and yellow soil degraded soil compound obstacle index provided by the invention can reveal dominant obstacle factors formed by compound obstacles, can support agricultural production and land management, and has important significance for soil obstacle diagnosis and agricultural improvement.

The application belongs to the field of agricultural technology, and discloses a soil regulating device for preventing grassland soil degradation, which comprises a support frame, a suspension device, a side plate and a mud blocking plate, and a transmission device. The support frame supports the whole machine, ensures stability and durability; the suspension device is installed at the top end of the support frame and is used for connecting the device to a tractor or other power equipment, facilitating field movement and operation; the side plate is installed on one side of the support frame and is used for limiting the soil; the mud blocking plate is movably installed at one end of the support frame and is used for smoothing the surface of the loosened soil; the transmission device comprises a gear box, a transmission shaft and a reverser and is used for transmitting power from the tractor to the soil loosening component. The device is designed with double protection, effectively preventing dust from entering the inside of the rotating shaft and the support, reducing wear and tear and the risk of failure, prolonging the service life of mechanical components, at the same time, preventing dust from entering the connecting part of the rotating shaft and the transmission device, protecting the key components, ensuring the stable operation of the transmission device, improving the overall reliability and durability.

The invention provides a high and steep slope soil aggregate modifier based on a carbon component and a preparation method thereof, and belongs to the field of soil improvement and ecological restoration, and the modifier comprises the following raw materials: a granular organic carbon source, a mineral binding organic carbon source, a nanometer and microbial stabilizer and the like. A preparation method of the modifier comprises the following steps: mixing the humic acid, the leaf mold and the pine needle mulch, putting the mixture into a sodium hexametaphosphate solution, reacting, drying, and grinding to obtain the mineral bound organic carbon source; the preparation method comprises the following steps: uniformly mixing a granular organic carbon source, a mineral combined organic carbon source, nano CaCO3, a microbial stabilizer and the like, adding water, fermenting to obtain a fermentation product, drying, and crushing to obtain the modifier. According to the modifier, through the synergistic effect of multiple components, the ecological function of high and steep slope degraded soil is effectively recovered, the aggregate structure stability of the improved soil can be improved, and the long-term stability of aggregates and the organic carbon storage capacity are enhanced.

This invention discloses the application of a heteropoly compound / PVA composite in water retention of sandy soil. The invention prepares the heteropoly compound / PVA composite by mixing polymer polyvinyl alcohol with a Standberg-type heteropoly compound or its derivatives, which is then used for water retention in sandy soil. The heteropoly compound / PVA composite of this invention can significantly improve the water and fertilizer retention capacity of sandy soil, and has high adhesion ability. It can withstand strong winds in arid regions, is not easily blown away and loses its effectiveness, and will not disperse into the air causing particulate pollution. After gradually losing water, the sand amendment forms a porous membrane on the surface of the gravel, maintaining the soil's aeration and permeability, and plays a positive role in the restoration of degraded soils in desert areas.

The invention discloses water-saving, recarburizing and fertilizing artificial soil and a preparation method thereof. The method comprises the following steps: according to the multi-objective optimization requirement of degraded soil, aiming at the problems of single function, incomplete product quality evaluation and unstable inter-batch performance of current artificial soil, compounding high-nutrient organic compost, strong-water-storage organic compost and yellow subsoil according to a primary formula to prepare a primary screening material, and representing basic physicochemical properties, hydraulic characteristics and oxygen supply capacity; and constructing a minimum data set, preferably determining an optimal formula by using a soil quality index evaluation method, and further preparing artificial soil products on a large scale. The artificial soil prepared by the technical scheme has high organic matter and nutrient content and good moisture infiltration-storage performance, provides a multi-effect and stable-performance improved material for ecological management, and is suitable for the fields of urban landscaping land construction, mine ecological restoration, homestead reclamation and greening and the like.

The invention belongs to the technical field of soil improvement, and particularly relates to a complex microbial inoculant and a rapid ripening method for cultivated land deeply ploughed through cooperation of the complex microbial inoculant and humic acid. In the method, the used complex microbial inoculants comprise bacillus velezensis, stenotrophomonas maltophilia C-GD and bacillus subtilis. The complex microbial inoculants and humic acid are mixed to form a modifier mixture, and deep ploughing is carried out cooperatively, so that quick curing of cultivated land is realized. The method is suitable for rapid improvement of soil quality of degraded soil, newly cultivated land or facility agriculture.

The invention discloses a fungal inoculant and application thereof in algae crust, and belongs to the field of microorganisms. The technical problem to be solved by the invention is how to construct the algae crust. The application of the fungal inoculant in the algal crust comprises the following steps: inoculating deep-color endophytic fungi and microalgae to the surface layer of soil to be remediated, and culturing to realize the construction of the algal crust; the deep-color endophytic fungi are bacterial strains with the preservation number of CGMCC (China General Microbiological Culture Collection Center) No.17463 in the China General Microbiological Culture Collection Center; the microalgae is composed of Microcoleus sp., Scenedesmus sp. And Chlorella sp., and the microcoleus sp., the Scenedesmus sp. And the Chlorella sp. Are used in the method. According to the method, rapid formation of algae crust and improvement of soil carbon accumulation are successfully realized, the key technical problems of long crust period, poor adaptability and the like are solved, and the purpose of ecological restoration of degraded soil in an arid and semi-arid mining area is favorably realized.

This invention discloses a method for synergistic optimization of soil structure and fertility based on straw return to the field to promote decomposition, belonging to the field of soil optimization technology. A systematic technical system is constructed from the dimensions of in-situ straw decomposition and compost humification enhancement. Highly efficient decomposition-promoting microorganisms and humification promoters are screened through indoor cultivation experiments. The regulatory mechanism of decomposition promoters on the compost humification process is analyzed using humification kinetic models and structural equation models, forming a compost humification enhancement technology. Key parameters affecting in-situ straw decomposition are screened using the nylon mesh bag method. Multiple physical, chemical, and biological indicators of the soil are measured through years of field experiments. A comprehensive scoring model is constructed using principal component analysis, combined with multi-factor variance analysis and multiple comparisons, to screen the treatment combination with the highest contribution rate to the synergistic improvement of soil structure and fertility. Technical procedures are formulated and demonstrated. This achieves synergistic fertilization of the topsoil and sub-topsoil of degraded soils, with significant economic, ecological, and social benefits.

The invention discloses a preparation method of a soil conditioning type compound fertilizer based on chitin waste, and belongs to the technical field of soil fertilizer preparation. The method comprises the following steps: cleaning and drying shrimp and crab shells, and crushing to obtain chitin powder; mixing lactic acid or malic acid, glycerol, choline chloride and urea according to a specific mass ratio to prepare a chitin activating solution; under a mild condition, the chitin powder is activated by using the activating solution to obtain an activated chitin material; mixing the materials with humic acid, a mineral conditioner and a nitrogen-phosphorus-potassium basic chemical fertilizer according to a determined ratio, and granulating; a protective agent solution containing trehalose and bentonite is mixed with a functional microbial agent, the mixture is sprayed on the surfaces of fertilizer particles, and a finished product is obtained after low-temperature drying. According to the method, recycling of chitin waste is achieved through a green process, the obtained product can synergistically improve the soil structure, adjust the pH value and maintain the microbial activity, and the method is suitable for improvement of degraded soil.

The application provides a coal gangue-based artificial soil continuous preparation device system and a preparation method. The coal gangue-based artificial soil continuous preparation device system comprises a grading and quality separation unit and a biological activation soil preparation unit arranged in sequence along a material conveying direction. The grading and quality separation unit comprises a crushing module, a first-stage screening module, a second-stage screening module, a first storage bin, a second storage bin and a third storage bin. The biological activation soil preparation unit comprises a batching module, a degradation reaction tank, a microbial agent storage tank and an auxiliary bin. The application realizes large-scale continuous production of coal gangue-based artificial soil by taking coal-based solid waste as raw material, and produces coal and hard aggregate in parallel, realizes full-component utilization of coal gangue through grading and quality separation, rapidly and deeply decomposes pollutants in coal gangue, and rapidly constructs a healthy soil structure, and the prepared coal gangue-based artificial soil can be widely applied to mine repair surface covering soil and degraded soil improvement such as sandy land.

The invention discloses a multifunctional biomass combustion pyrolyzing furnace, relates to the technical field of pyrolyzing furnaces, is suitable for soil improvement and solid waste resource utilization, and comprises an outer furnace body, an inner furnace body, a negative pressure part and an air inlet pipe; the inner furnace body is sequentially provided with a primary combustion chamber, an inclined pyrolysis chamber and a secondary combustion chamber from bottom to top; wherein the pyrolysis chamber adopts an inclined design with a high right part and a low left part, continuous feeding and discharging of materials are realized by virtue of gravity, the retention time is regulated and controlled by virtue of a discharging baffle, the negative pressure part realizes independent oxygen supply without external force based on the one-way conduction characteristic of a Tesla valve, unburnt pyrolysis gas in the primary combustion chamber is introduced into the secondary combustion chamber for secondary combustion, and the heat efficiency utilization rate exceeds 70%; the agricultural and forestry waste is used as fuel, the tailings / degraded soil and biomass mixture is used as a pyrolysis object, the physicochemical property of the pyrolysis object is remarkably improved, and the method is suitable for in-situ ecological restoration of mining areas and degraded soil and has the advantages of being low in consumption, efficient and easy to operate.

The invention relates to the technical field of microbiology and biology, and provides a Bacillus sp. L01 and application thereof. The water barren bacillus L01 has super-strong stress resistance, can maintain metabolic activity under extreme composite stress of 9% NaCl and 30% PEG6000, has triple functions of phosphate solubilization, potassium solubilization and protease secretion, and can synchronously realize coordinated regulation of saline-alkali remediation, drought adaptation, phosphorus and potassium activation, organic matter conversion and the like by using a single strain. The method has the core advantages of being high in stress tolerance, high in function integration level and low in application cost, and a new bioremediation scheme is provided for degraded soil.

The invention relates to the technical field of degraded soil improvement, in particular to a desert soil organic matter improving material and a using method thereof. The material comprises weathered coal, coal gangue, desulfurized gypsum powder and a fly ash silicon fertilizer. The coal gangue comprises organic matters and clay minerals, the mass of the organic matters is 15-30% of the mass of the coal gangue, the mass of the clay minerals is greater than 50% of the mass of the coal gangue, and the mass part ratio of the weathered coal to the coal gangue to the desulfurized gypsum powder to the fly ash silicon fertilizer is 100: (20-30): (10-20): 2. The using method comprises the step of mixing the desert soil organic matter improving material with soil to be improved. Therefore, the desert soil organic matter improving material provided by the invention can achieve the purposes of improving the content of organic matters in soil and maintaining long-term stability of the organic matters at extremely low cost, and promoting ecological restoration and developing agricultural production.

The application discloses a kind of fungal inoculant and its application in algae crust, belong to the field of microorganism.The technical problem solved by the application is how to construct algae crust.The application of fungal inoculant disclosed in the application in algae crust comprises the following steps: after dark endophytic fungi and microalgae are inoculated to the surface layer of soil to be repaired, culture is carried out, the construction of algae crust is realized;the dark endophytic fungi are the strain with the preservation number CGMCC No.17463 in China General Microbiological Culture Collection Center;the microalgae are composed of Microcoleus sp., Scenedesmus sp.and Chlorella sp.The application successfully realizes the rapid formation of algae crust, improves soil carbon accumulation, solves the key technical problems such as long crust period and poor adaptability, and is beneficial to the purpose of ecological restoration of degraded soil in arid and semiarid mining areas.

The invention relates to the field of ecological restoration, and discloses a plateau muddy carbon land degraded soil restoration method based on water and soil coordinated regulation, which comprises the following steps: S1, region division and matrix layered reconstruction: carrying out topographic and hydrological surveying and mapping on a target restoration region, and dividing a hydrodynamic function unit, a hydraulic adjusting layer, an ion exchange layer, a micro-ecological composite layer and a surface vegetation layer are sequentially laid from bottom to top; s3, ion exchange layer redox regulation and control; and S4, activating the compound microbial community and reconstructing the carbon flux. Through regional division and matrix layered reconstruction, reasonable layout of a hydraulic regulation layer, an ion exchange layer, a micro-ecological composite layer and a surface vegetation layer in each hydrodynamic function unit is realized, so that water, solute and electron acceptors form continuous gradients among different layers, and a foundation framework of a water-soil coordinated regulation system is ensured to be complete; and space and material conditions are provided for subsequent percolation regulation and control, microbial activation and carbon sequestration plant growth.

The invention relates to Klebsormidum sp. GXU-A8 and application of the Klebsormidum sp. GXU-A8, and belongs to the technical field of microalgae. The invention provides krill GXU-A8, the classification name of the krill GXU-A8 is Klebsormidium sp. GXU-A8, the krill GXU-A8 is preserved in the China Center for Type Culture Collection on June 16, 2025, the preservation address is Wuhan University, Wuhan, China, and the preservation number is CCTCC NO: M 20251401. According to the invention, an alga is obtained by screening and culturing, the alga is Kribosome and named as Kribosome GXU-A8 through assembling, annotation and phylogenetic analysis on ribosome, chloroplast and mitochondrial genes of the alga, and experiments prove that the alga has the capability of resisting acidic, alkaline and high-salt environments, and can be used for preparing the Kribosome GXU-A8. The potential of repairing degraded soil and promoting crop growth is also realized.