75 results about "Water retention (function)" patented technology

The invention discloses a water-absorbing material for soil water retention and fertilizer self-supply as well as a preparation method and application thereof, and relates to the technical field of soil water retention functional materials and preparation thereof. The water absorbing material is particulate matters with a graded micro-nano structure prepared by reacting natural agricultural and forestry wastes, animal wastes, acrylic acid or derivatives thereof, an initiator, a cross-linking agent and inorganic minerals; the mass ratio of the natural agricultural and forestry waste to the animal waste to the acrylic acid or the derivative thereof to the initiator to the cross-linking agent to the inorganic mineral is 100: (10-300): (500-6000): (5-100): (2-50): (10-200). The water absorbing material not only can be degraded under ultraviolet light, but also has high water absorption rate, can maintain water absorption performance after circulating freezing and thawing treatment, and spontaneously provides nutrients for soil.

The application provides an in-situ liquid gel-forming water-retaining agent and a preparation method and application thereof. The water-retaining agent is composed of A component and B component which are applied in steps. The A component contains an aqueous solution of a natural modified polymer, and the natural modified polymer is selected from one or two of carboxymethyl chitosan, carboxymethyl cellulose or a sodium salt thereof. The B component contains an aqueous solution of a cationic crosslinking agent, and the cationic crosslinking agent is selected from one or more cations of copper nitrate, iron nitrate, zinc nitrate, manganese nitrate, chitosan quaternary ammonium salt, calcium nitrate and magnesium nitrate. The water-retaining agent can realize the integrated functions of slow release of trace elements, water retention, soil improvement and precise nutrition supply. Furthermore, the water-retaining agent is applied to crop growth in combination with the "step-by-step drip irrigation and in-situ gel formation" technology, so that the agronomic characters of crops can be significantly improved.

The invention discloses an ecological slope protection method based on concrete hexagonal blocks, which realizes the double targets of slope stability and ecological restoration through a five-in-one technical system of grouted rubble footing, original soil compaction, nutritional non-woven fabric laying, concrete hexagonal block construction and a vegetation restoration system. And quality control and acceptance: regularly checking footing settlement, non-woven fabric lap joint, hexagonal block flatness and the like, monitoring the vegetation recovery effect by aerial photography of an unmanned aerial vehicle, detecting the structural stability, evaluating the vegetation coverage rate and the like. According to the method, standard hexagonal block prefabricated parts are spliced to form a grid framework, nutrient soil is filled in the grid framework, turf or aquatic plants are planted in the grid framework, a double-reinforcing structure of a grouted rubble coping and footings is matched, water and soil loss is effectively prevented, nutritional non-woven fabric is innovatively adopted as an ecological transition layer, the functions of water retention, fertilizer retention and scouring prevention are achieved, and the ecological effect is good. The in-situ soil compaction technology is matched to improve the bearing capacity of the base, the vegetation survival rate is high, and the method is suitable for various slope treatment projects such as rivers, reservoirs and roads.

The utility model belongs to the technical field of subway construction, and particularly provides a multifunctional supporting device based on a subway tunnel section, which comprises a supporting plate and a supporting frame, the supporting plate is fixedly connected with the top of a tunnel through the supporting frame, a plurality of through holes are formed in the supporting plate at intervals, and hollow connecting rods are mounted in the through holes. A plurality of water inlet holes communicated with the interior of the connecting rod are formed in the side wall, close to the top end, of the connecting rod at intervals, and a water outlet hole is formed in the bottom end of the connecting rod; the tunnel further comprises a plurality of flexible flow guide pipes, the flexible flow guide pipes correspond to the connecting rods one to one, the flexible flow guide pipes are fixedly installed on the supporting frame, one ends of the flexible flow guide pipes communicate with the water outlet holes, and the other ends of the flexible flow guide pipes communicate with a drainage system in the tunnel. According to the utility model, the tunnel section can be effectively supported, the construction safety is ensured, through the arrangement of the through holes, the connecting rods and the flexible flow guide pipes, seepage water in a soil layer can be guided into a drainage system, accumulated water retention is avoided, the water leakage phenomenon is effectively reduced, and meanwhile, the reliability of a waterproof system can be improved.

The present application relates to a kind of water-repellent breathable carbon mineralization protective coating and its preparation method and application, by mass parts, including the following components: γ-dicalcium silicate powder: 3~6 parts;Carbonization template: 0.3~0.9 parts;Crystal form regulator: 0.8~1.8 parts;Surface hydrophobic modifier: 0.01~0.1 parts;Water-retention and pore control agent: 2~5 parts.The present application water-repellent breathable carbon mineralization protective coating is based on the carbonization reaction of γ-dicalcium silicate, induces aragonite crystal form growth by crystal form regulator, gives coating surface hydrophobicity by surface hydrophobic modifier, improves pore and water retention by water-retention and pore control agent, can realize the function of water (liquid) blocking not gas (vapor) blocking, give consideration to water-repellent and breathability, effectively avoid the problem that coating is bubbled and falls off due to internal steam pressure is too large, especially suitable for coastal splash zone and tidal zone concrete protection.

The application discloses a preparation method of drought-resistant polyglycoside synergistic fertilizer, and belongs to the technical field of agricultural fertilizer.The gamma-polyglutamic acid from microbial fermentation and the iridoid glycosides from plant extraction are chemically bonded at the molecular level by two-stage gradient induction self-assembly technology to prepare polyglycoside compounds with a three-dimensional network structure, and then the polyglycoside compounds are compounded with fertilizer base materials and granulated by a high tower melting to obtain the drought-resistant polyglycoside synergistic fertilizer.The polyglycoside compounds prepared by the application form a stable three-dimensional network structure through ester bonds and hydrogen bonds, have physical water retention and biological induction dual functions, and the water retention rate in soil is increased by 30%-50% compared with common fertilizer, the corn yield is increased by 20%-30%, and the fertilizer utilization rate can be increased by 18.8%, so that the drought-resistant synergistic effect is remarkable and the industrial application value is high.

The invention discloses melatonin-chitosan-attapulgite composite gel beads and a preparation method thereof. The preparation method comprises the following steps: S1, treating attapulgite with organic acid to obtain activated attapulgite; s2, dispersing the activated attapulgite into the chitosan acid sol; s3, adding melatonin into the dispersed sol, and mixing in a dark place to obtain colloid; and S4, dropwise adding the colloid into a cross-linking agent, and standing to form gel beads. According to the melatonin-chitosan-attapulgite composite gel bead, the melatonin-chitosan-attapulgite composite gel bead is constructed, the water retention performance of the composite gel bead is excellent, chitosan and attapulgite synergistically improve the water absorption and holding capacity, soil moisture loss is reduced, the water saving effect is remarkable, and the melatonin-chitosan-attapulgite composite gel bead is suitable for agricultural production in water-deficient areas. The composite carrier can slowly release melatonin, prolong the action period of melatonin, regulate and control crop physiology, enhance stress resistance and achieve the dual effects of moisture guarantee and stress resistance regulation and control.

This invention discloses a device for dispensing a drought-resistant afforestation water-retaining agent and its usage method, comprising a device support, a storage cylinder, a drilling mechanism, and a soil collection mechanism. The device support includes a third support plate, a second support plate, and a first support plate arranged sequentially from top to bottom. The bottom four corners of the third support plate are fixedly connected to the second support plate via second columns, and the bottom four corners of the second support plate are fixedly connected to the first support plate via first columns. Universal wheels are provided at the bottom four corners of the first support plate. A control box is mounted on the third support plate. This invention, employing the aforementioned device and usage method for dispensing a drought-resistant afforestation water-retaining agent, utilizes a stirring device within the storage cylinder to prevent the water-retaining agent from clumping, an integrated drilling and soil collection design to avoid soil waste, a negative pressure system with backflushing function to improve equipment reliability, and overall intelligent control to achieve automatic soil backfilling, effectively enhancing the water retention effect.

The invention belongs to the cross technical field of soil improvement and industrial waste resource utilization, and particularly relates to a multifunctional soil conditioner for assisting permeation of cohesive soil. The raw materials comprise the following components in parts by weight: 55-75 parts of calcium terephthalate crystals, 5-12 parts of humic acid, 1-4 parts of nano silicon dioxide, 5-8 parts of modified bentonite and 2-5 parts of carboxylated grafted humic acid polyester staple fibers. By designing a synergistic formula of the calcium terephthalate crystals with the sheet structures, the humic acid, the nano silicon dioxide and other environment-friendly components and combining a porous net structure formed by the sheet crystals in the soil, the soil conditioner has the advantages that the balance between the permeation assisting effect and the water retention capacity of the viscous soil is realized; meanwhile, the situation that the activity of soil microorganisms is reduced due to a chemical surfactant conditioner is avoided.

The utility model relates to the technical field of landscape engineering solves the problem that the demand of water storage and release cannot be considered and too much water storage will cause the plant root to rot in the soil. Specifically, a planting groove structure with water retention function for landscape engineering, including planting groove, the both sides of planting groove are all set up and lead to a plurality of through hole, the inner bottom end of this planting groove places water storage subassembly, its inner wall is fixedly connected with the partition subassembly in the axial symmetry, the top surface of partition subassembly is sequentially provided with soil layer and green layer, the water storage subassembly includes the sponge block of placing in the inner bottom end of planting groove and the water diversion sponge of fixedly connected in the both sides of this sponge block, the water diversion sponge is led to the outside of planting groove through the through hole, the partition subassembly includes two axial symmetry fixedly connected with the inclined plate of planting groove inner side wall and the partition net of fixedly connected between the two inclined plate.

This invention proposes a non-fired ceramsite matrix for wetlands based on lake silt and its preparation method. The ceramsite matrix comprises the following raw materials by weight: 55-65 parts mud cake, 10-30 parts slag, 10-30 parts fly ash, 3-7 parts sodium hydroxide solution, and water. The ceramsite matrix of this invention is prepared through the following steps: S1, batching: drying, crushing, and grinding the prepared mud cake to obtain mud powder; S2, mixing to prepare mud clumps; S3, preparing ceramsite green pellets; S4, steam curing the ceramsite green pellets from step three to obtain porous ceramsite; S5, naturally curing the ceramsite with water retention to obtain the ceramsite matrix. The ceramsite matrix prepared by this invention uses lake dredging silt as the main raw material and industrial waste such as fly ash and slag as auxiliary materials. It is green and environmentally friendly, with reasonable cost, achieving effective resource reuse, reducing energy consumption, and forming an environmentally functional material with water purification effects, achieving the effect of treating waste with waste, thus achieving multiple benefits.

The invention relates to the technical field of slurry-free aquatic product treatment, in particular to a two-stage slurry-free treatment method for aquatic products, which comprises the following steps: (1) pretreatment: unfreezing, cleaning and cutting aquatic product raw materials; (2) primary treatment: mixing the cut raw materials with a first treatment solution, and rolling or soaking for 0.5-20 hours at 0-6 DEG C. According to the invention, the water-retaining agent and seasoning ingredients can be fully and uniformly permeated into the raw materials at low temperature through the first treatment stage, so that the water-retaining agent and the seasoning ingredients can be fully and uniformly permeated into the raw materials at low temperature, and the water-retaining agent and the seasoning ingredients can be fully and uniformly permeated into the raw materials; in cooperation with the second treatment stage, internal moisture and flavor substances can be effectively locked, and the two treatment stages are mutually independent and sequentially linked in the process, so that multiple functions such as water retention, brittleness increasing and forming can be realized in steps, and the pulp-free product is uniform in internal and external texture, full in tasty and improved in taste.

The invention discloses a composition for artemisia abrotanoides seedling formation and a method for artemisia abrotanoides sand stabilization and seedling formation. The composition for artemisia abrotanoides seedling formation comprises a complex microbial inoculant, a composite nutrition activation solution and a water retention matrix, wherein the complex microbial inoculants are prepared from Lyotinia sp., pseudomonas aeruginosa, Pseudomonas aeruginosa, Pseudomonas aeruginosa and Bacillus spp.; the composite nutrition activation liquid comprises a rapid carbon source, an osmotic pressure protective agent and full-effect mineral nutrition, and the composite water retention matrix comprises bentonite, attapulgite and sodium alginate. According to the method, the complex microbial inoculant, the structured water retention matrix, the composite nutrient activation liquid and the stepped water management strategy which are complementary in function are systematically integrated, the operation process is clear, and field application shows that the integration method can synchronously achieve efficient colonization of microorganisms, accurate regulation and control of water and directional cultivation of root systems; and a whole set of reproducible, efficient and stable technical scheme is provided for efficient planting of artemisia abrotanoides in desertification control.

Apparatus and a method for water treatment is provided with a closed-loop quality control system optionally using an AI-powered diagnostic system in situ. The preferred embodiments provide a combined intelligent water retention and storage system most preferably comprising a flexible tank, using non-watertight tubes with waterproof membrane reinforced by geotextile. Another aspect adds integrating greywater reuse, intelligent irrigation, and automated management by ultrasonic sensors, controlled by a SAS platform with real-time weather forecasting. In another aspect, there is provided a combined water retention and storage system allowing a single tank to perform both retention and storage functions.

The utility model discloses a wet tissue with long-acting water locking and moisturizing functions, which belongs to the technical field of wet tissues and comprises an A-side skin-friendly layer, an A-side permeable layer, an A-side cellulose sponge layer, a middle water retention layer, a B-side cellulose sponge layer, a B-side permeable layer and a B-side skin-friendly layer from top to bottom. First wave parts are formed on the opposite surfaces of the A-surface permeable layer and the B-surface permeable layer in a hot pressing manner; second wave parts are formed on the back sides of the A-side cellulose sponge layer and the B-side cellulose sponge layer in a hot pressing manner; and the first wave part and the second wave part are connected in a concave-convex matching manner. Efficient water retention is achieved through the middle water retention layer, good water absorption is achieved through the A-face cellulose sponge layer and the B-face cellulose sponge layer, water permeation towards the two sides is achieved through the A-face permeable layer and the B-face permeable layer, and skin-friendly contact with the skin is achieved through the A-face skin-friendly layer and the B-face skin-friendly layer. The utility model has good imbibition and water locking functions, can realize long-acting water locking and moisturizing, has high use comfort, and is more suitable for people with sensitive skin to use, and water is not easy to lose.

The invention relates to the technical field of biochar composite materials, in particular to a biochar composite material as well as a preparation method and application thereof. Comprising the following components in parts by weight: 10-15 parts of a composite adsorbent, 20-55 parts of modified charcoal, 50-96 parts of a castor oil-based polyurethane coupling water-retaining agent, 5-12 parts of modified iron tailings, 0.5-2 parts of a cross-linking agent and 0.5-1.5 parts of an initiator. In the prepared biochar composite material, the modified biochar provides adsorption sites, the polyurethane network realizes high water retention, the modified iron tail provides catalytic activity, the whole biochar composite material can be further used for soil improvement at the same time, the biochar composite material has high specific surface area and rich surface functional groups, and the formed water retention network maintains a local moist environment, so that the biochar composite material can be applied to soil improvement. And microbial attachment and pollutant biodegradation are facilitated.

The invention relates to the technical field of soil remediation, in particular to a soil remediation target dynamic formulation method based on an underground water conservation protection function, which comprises the following steps: acquiring a remediation starting point and water level data, identifying a lagging time period, adjusting a boundary to generate a dynamic mapsheet, and extracting a water level gradient and seepage direction sorting intervention sequence. Fluctuation and stagnant water capacity are judged to mark a regulation and control section, and concentration and water level trends are superposed to set a restoration time history table. According to the method, an intervention lag relationship is determined by extracting a water level inflection point and an infiltration difference value, a boundary response direction is adjusted according to a lag time period, the adaptability of a control range is enhanced, an intervention priority sequence is constructed by combining a hydraulic gradient and a seepage trend, the repair efficiency of a continuous segment is highlighted, and a restricted area is judged by utilizing water layer fluctuation and water retention capacity. The concentration regulation and control position is accurately delimited, the water level trend and pollution distribution are superimposed, the repair frequency and time history are set, and dynamic cooperation of intervention recognition, boundary adjustment and the repair rhythm is achieved.

This invention relates to the field of arid microenvironment water retention and regulation equipment technology. A water pump cylinder is fixedly mounted on a base, with an inlet pipe connected to a water tank. A one-way valve piston is located inside the pump cylinder. A drive shaft is spun onto a frame via bearings. A cup-type rotor is fixedly mounted on the upper end of the drive shaft. A lifting mechanism and a drive mechanism are mounted on the frame, and a speed limiting mechanism is mounted on the drive shaft. The device converts wind energy into the kinetic energy for water pumping using a wind turbine. Based on this, it features an adjustable pump volume and a speed limiting structure for wind-driven operation. This allows the device to utilize wind energy in the environment to regulate water retention in the microenvironment. The device can adjust the water replenishment rate according to environmental changes, enabling precise regulation of the microenvironment in arid environments. Furthermore, the device has a simple structure and uses a conventional mechanical function, allowing for cost-effective large-scale deployment.

A submerged water feeding pump with a shutdown water retention function comprises a motor, a base, a pump outer pipe, an inner pipe, a pump shaft, a flow guide pipe, a guide vane and an impeller, and is characterized in that a sealing seat is arranged at an outlet of the guide vane, and a valve clack is sleeved on the inner pipe corresponding to the outlet of the guide vane; the outer wall of the inner pipe or the inner wall of the flow guide pipe is provided with a limiting piece used for limiting the valve clack to move upwards to the upper limit position after the valve clack is opened so as to ensure the overflowing area. The contact portion of the lower end face of the valve clack and the upper end face of the sealing seat is a sealing contact face. When the water feeding pump runs, liquid passing through the flow channel between the guide vane and the impeller exerts pressure upwards to enable the valve clack to move upwards and be opened, the liquid flows out through the flow channel between the valve clack and the flow guide pipe, and when the water feeding pump stops, the valve clack falls reversely to enable the sealing face between the valve clack and the sealing seat to be attached, and the liquid in the pump cavity is stored. In addition, the quick starting device is simple in structure, easy to process, reliable in sealing and long in service life.

The invention discloses a polymer cement waterproof mortar with a fireproof function and a preparation method thereof, and belongs to the technical field of cement mortars.The polymer cement waterproof mortar with the fireproof function is prepared from cement, quartz sand, quartz powder, waterproof rubber powder, cellulose, wood fiber, a water repellent agent, a water reducing agent and a defoaming agent. The hydrophobic agent, the water reducing agent and the defoaming agent are adopted to prepare the powder, the hydrophobic agent can improve the waterproof effect, the water reducing agent can improve the compactness of mortar, improve the compressive strength and breaking strength of the mortar, improve the impermeability of the mortar, reduce the water absorption rate of the mortar and improve the compression-bending ratio, and the defoaming agent has a good foam inhibition effect and is beneficial to improving the compactness of the mortar; and cellulose is adopted, so that the water-retaining property of the cement mortar can be improved, the hydration time can be prolonged, and the mixing viscosity of the mortar can be increased.

This invention discloses a composite material based on "sponge soil" to enhance the water retention and slow evaporation performance of sandy soil, its preparation method, and its application, belonging to the field of sandy soil improvement technology in arid areas. The preparation method includes the following steps: preparing a plant-derived colloidal solution using natural gum powder and a crosslinking agent as raw materials; mixing the plant-derived colloidal solution with a porous matrix material to obtain the composite material based on "sponge soil" to enhance the water retention and slow evaporation performance of sandy soil. This invention constructs a multi-level porous structure of "porous channel water-retaining colloidal network," achieving rapid water absorption and efficient water retention while effectively inhibiting ineffective evaporation and deep seepage of water. This significantly improves the water retention capacity of sandy soil and extends the effective water supply time, providing an environmentally friendly and easy-to-apply improvement method for the ecological restoration of desertified soils. It solves the problems of poor water retention capacity, severe water evaporation and seepage in sandy soils, and the limited functionality and insufficient long-term effectiveness of single improvement materials in existing technologies.

The utility model provides an intelligent slow-release water retention device based on biodegradable materials, and relates to the technical field of irrigation equipment, the intelligent slow-release water retention device comprises a shell, the inner wall of the shell is fixedly provided with a fixing ring, the outer surface of the fixing ring is fixedly provided with a supporting rod, and the outer surface of the supporting rod is slidably connected with a first mounting plate; a first buckle is mounted outside the first mounting plate, a second buckle is connected into the first buckle in a clamped mode, through cooperation of the first mounting plate, a first spring and a first positioning rod, the first positioning rod and the second positioning rod can move towards the outside of the first mounting plate under the action of the first spring, and when an open groove moves to the outside of the first mounting plate, the inside of the first mounting plate is sealed; at the moment, the bottom of the fixing frame is sealed, when the fixing frame is detached, the first mounting plate at the bottom can conduct sealing protection on the interior of the shell, the function of sealing the interior of the whole device when the water-absorbent resin is replaced is achieved, and it is beneficial for reducing the situation that external wind and sand enter the device when the water-absorbent resin is replaced.

The invention discloses a soil moisture and fertilizer retention type conditioner based on a nanotechnology and a preparation method thereof, and relates to the technical field of agricultural soil remediation. The conditioner comprises an amphiphilic nano composite carrier, a nano mineralization material, nano enzyme and stress-tolerant functional microorganisms, a three-dimensional porous network structure is formed through directional assembly of the amphiphilic nano composite carrier, and uniform loading and stable dispersion of all functional components are achieved. The nano mineralization material is chemically bonded with the carrier through in-situ deposition, and heavy metal fixation is enhanced; the nano-enzyme is directionally anchored in a hydrophobic region of the carrier, so that the stress resistance of crops is improved; stress-tolerant functional microorganisms are fixed through adsorption-embedding compounding, and keep activity and promote soil remediation under the protection of the carrier. All the technical means cooperate to form a closed-loop system, salt removal, heavy metal fixation, water retention, efficient nutrient utilization and crop stress resistance enhancement are synchronously achieved, and an integrated solution is provided for composite degraded soil improvement.

The utility model relates to the field of stationery commodities, in particular to a writing brush rack with a moisturizing function, which comprises a water storage cup, a top cover in threaded connection with the water storage cup, a connecting rod in threaded connection with the middle-upper part of the top cover, left-right symmetrical buckles connected with the upper part of the connecting rod, left-right symmetrical reserved openings arranged on the top cover and used for clamping and fixing, and the lower side of the top cover is connected with mounting seats which are symmetrical left and right, the number of the mounting seats is four, first mounting plates are rotationally connected between the adjacent mounting seats, the first mounting plates are in contact connection with the top cover, and first torsional springs are connected between the adjacent mounting seats and the adjacent first mounting plates. According to the utility model, the sponge sheet made of the memory sponge material is adaptively adjusted and wrapped according to the specification of the writing brush, so that the water retaining device has excellent water retaining capacity, can keep moisture in the water storage cup not lost for a long time, and effectively slows down the evaporation speed of the moisture, thereby providing a continuous moist environment for the writing brush and providing lasting moisture retaining support for the writing brush.

The application discloses a preparation method of a microbial water-retaining soil improvement substrate, mainly including five processes of strain expansion, water-retaining material modification, organic substrate pretreatment, compound mixing and curing, and powder drying. A plurality of functional bacteria are screened from natural humus soil and wetland sludge, and mixed into high-concentration mixed bacterial liquid according to a specific proportion; a biological base is compounded with inorganic mineral water-retaining raw materials, and modified through acidification and spray drying to obtain modified water-retaining powder. Meanwhile, a plurality of organic materials are mixed and fermented to prepare an organic nutrient substrate. In the process, the proportion of the strains can be adjusted to adapt to saline-alkali soil improvement, part of the raw materials can be replaced to meet different water-retaining requirements, and sodium humate can be added to improve fertilizer efficiency and activity. The finished product has high viable bacterial content, can significantly improve soil water-holding capacity and reduce bulk density, and has the functions of water retention, fertilizer supply, soil structure improvement and microbial repair.

The utility model provides a degradable controllable environment-friendly functional mulching film, which comprises a biodegradation layer and a mulching film base layer, the lower surface of the biodegradation layer is fixedly connected with a temperature control layer, the lower surface of the temperature control layer is fixedly connected with a water retention layer, the lower surface of the water retention layer is fixedly connected with a reinforcing layer, and the reinforcing layer is fixedly connected with a plastic film base layer. The upper surface of the mulching film base layer is fixedly connected with a composite functional layer, and the upper surface of the composite functional layer is fixedly connected with the lower surface of the reinforcing layer. According to the degradable controllable environment-friendly functional mulching film, the mulching film is composed of the biodegradation layer, the temperature control layer, the water retention layer, the enhancement layer, the fertilizer slow release layer and the composite functional layer, the temperature control effect is good, heat exchange between the soil surface and external air is effectively reduced, a heat preservation layer is formed, and upward dissipation of soil heat is prevented. In cold winter, the mulching film can prevent cold air from directly influencing the soil, reduce the drop of the soil temperature and keep the soil temperature relatively stable.

The invention discloses a composite microbial agent for soil improvement and a preparation method thereof, and relates to the technical field of microbial agent preparation, the composite microbial agent comprises the following raw materials: a composite carrier, a functional material, modified xanthan gum, a strain fermentation broth and an adhesive; according to the invention, the composite carrier is added, silica sol-biomass ash modified bentonite provides a stable shelter for viable bacteria by virtue of a nano coating structure, and the composite carrier has the functions of water retention, stress resistance and heavy metal passivation; the charcoal provides a carbon source with a high specific surface area and improves the soil porosity; humic acid can adjust the pH value of soil and promote rhizosphere colonization of strains; the nano kaolin enhances the adsorption performance of the carrier through the original nano particle size, and Al < 3 + > is separated out to participate in the cross-linking reaction of the modified xanthan gum; the soil conditioner is high in viable bacterium loading rate, the granular structure and nutrient adsorption capacity of the soil are remarkably improved through the synergistic effect of all the components, and the soil conditioner is good in compatibility with strain fermentation liquor and functional materials and can adapt to various soil types such as acidity, salt and alkali, heavy metal pollution and the like.

The invention discloses a saline-alkali soil remediation method integrating intelligent regulation and ecological cooperation, which is an efficient, cooperative, intelligent and eco-friendly saline-alkali soil comprehensive treatment method and realizes rapid elimination of saline-alkali obstacles and long-acting establishment of a soil health ecological system. According to the method, the prior art is not simply built, and an intelligent closed loop of'monitoring-analysis-execution-feedback 'is adopted; physical improvement (deep ploughing and biochar), chemical conditioning (ion replacement and coordination complexation) and biological activation (microorganisms, earthworms and salt-tolerant plants) moisture precise management (surfactants and water retention materials) are organically coupled and dynamically optimized in time sequence and function, and a synergistic effect of '1 + 1 > 2' is formed, which is a root reason for achieving the remarkable technical effect.

The invention discloses a multifunctional weak acid soil conditioner. The conditioner is prepared from the following raw materials in percentage by mass: 30-60% of fermented acidic vinegar residues, 10-30% of humic acid raw powder, 5-10% of straw charcoal, 10-30% of ore powder, 1-3% of a compound microbial agent and 5-10% of a high-molecular polymer water-retaining agent. Wherein the fermented acidic vinegar residues are solid residues obtained by fermenting persimmons (millet, apples, sorghum and the like) serving as raw materials through vinegar koji. The multifunctional weakly acidic soil conditioner prepared by the invention can specifically solve the problems of slight salinization and potassium-rich dry land soil degradation, safely and efficiently realize resource utilization of agricultural wastes, and integrates multiple functions of mildly adjusting acid, supplementing organic matters, improving soil structure, enhancing water retention capacity, activating beneficial microorganisms and the like; the method is one of effective measures for improving arid area cultivated land quality.

The invention discloses a dynamic response dust prevention and sand fixation construction process based on bentonite-based mineral gel, and belongs to the technical field of environmental protection and sand prevention engineering. Comprising the following steps of site cleaning and foundation leveling, surface pre-wetting and humidity fine adjustment, modified bentonite-based mineral gel powder preparation, material application, watering activation and gel forming, natural air drying and film layer solidification and periodic inspection and maintenance. Modified bentonite-based mineral gel is selected as a core material, and the material has the dynamic response characteristics that the material is quickly gelatinized when encountering water, is dried to form a film and is reversibly recovered when encountering water again. By means of the mechanism, a compact, flexible and continuous protective film can be formed within a short time after construction, sand grains are effectively combined, flowing of the sand grains is inhibited, and the wind erosion resistance and the water retention capacity are remarkably improved. The film layer can keep stable under different weather conditions and is not easy to crack or lose efficacy, so that the problems of short service life, disposable use and poor weather resistance of the traditional sand solidification agent are solved.