62 results about "Soil porosity" patented technology

The invention provides a soil conditioner for improving soil hardening and a preparation method thereof, and relates to the technical field of soil conditioning. The soil conditioner is prepared by combining nano silicon dioxide, a straw retting material, a straw composite fermentation material, biochar, a water-retaining agent and modified starch. The straw composite fermented material is prepared by the following steps: crushing straws, mixing with sweet water, stirring, drying, carrying out microwave treatment, mixing with bacillus thuringiensis, fermenting, sterilizing, subsequently adding a composite microbial agent of bacillus subtilis, trichoderma and bacillus mucilaginosus, continuously fermenting, and drying. The modified starch is prepared by semi-gelatinizing corn starch and then carrying out microwave drying and shaping. According to the present invention, the defects in the prior art are overcome, the soil hardening phenomenon can be rapidly improved with the small addition amount, the soil porosity is increased, the activity and the diversity of the soil microorganisms are ensured, and the soil fertility is improved.

The invention provides an ecological slope protection composite structure bearing capacity analysis method which comprises the following steps: collecting the root penetration depth, rhizome diameter, soil porosity and pine pile lateral soil pressure of an aquatic plant through a root growth monitor and a soil pressure sensor, and identifying the change rule of data at different time points; extracting a specific numerical range of root system density change; according to the extracted root density change value range, the strength degree of enhanced cementation of aquatic plant root exudates is identified, the improvement effect of the soil particle cementation degree on the shear strength of the soil body around the pine pile is evaluated, and the speed change rate of rhizome thickening and expanding is determined; according to the obtained optimal combination scheme of the pine pile-aquatic plant composite bearing system, the accuracy of slope protection instability risk point correction is evaluated, and a correction coefficient and a correction period for slope protection bearing capacity calculation are obtained.

The invention relates to the technical field of improvement of coastal saline-alkali land, in particular to a soil conditioner for salt-control fertile soil of coastal fishery reclamation saline-alkali land and a preparation method of the soil conditioner. The invention relates to a soil conditioner for salt-control fertile soil of coastal fishery receding reclamation saline-alkali land. The soil conditioner comprises the following raw material components in parts by mass: 40-60 parts of urea, 25-45 parts of calcium superphosphate, 30-45 parts of potassium sulfate, 20-25 parts of modified oyster shell powder, 10-15 parts of humic acid, 3-5 parts of a compound microbial agent, 10-20 parts of desulfurized gypsum and 25-35 parts of a biochar composite material, the biochar composite material is prepared from the following raw material components in parts by mass: 1 to 2 parts of sodium alginate, 1 to 2 parts of chitosan, 3 to 8 parts of biochar, 1 to 5 parts of calcium chloride, 10 to 20 parts of tuff stone powder, 0.25 to 2 parts of acidified attapulgite, 0.01 to 0.08 part of graphene oxide, 1 to 5 parts of ferric nitrate, 0.6 to 3 parts of copper nitrate and 0.1 to 0.5 part of silane coupling agent. By adopting the soil conditioner prepared by the invention, the pH value of soil, the volume weight of the soil and the total amount of water-soluble salts can be remarkably reduced, meanwhile, the organic matters of the soil are increased, and the porosity of the soil is increased.

The present application relates to the technical field of fertilizer, in particular to an organic leaf fertilizer and a production method thereof.The present application solves the problems of poor fertilizer efficiency and easy damage to soil structure.The present application improves the soil organic matter content of the organic leaf fertilizer by changing the dosage of kelp, the temperature and time of ultrasonic and the dosage of kelp extract; improves the relative content of plant chlorophyll of the organic leaf fertilizer by changing the dosage of earthworms, trypsin and amino acid extract; improves the soil porosity of the organic leaf fertilizer and reduces the soil bulk density by changing the dosage of shrimp shells, the temperature of removing protein and the dosage of chitosan extract; increases the plant leaf thickness of the organic leaf fertilizer by changing the dosage of straw and the dosage of cellulose extract; and improves the fertilizer utilization rate of the organic leaf fertilizer by changing the temperature and time of stirring and the time of emulsification and grinding.

The application provides a kind of biological fertilizer prepared based on blue-green algae mud, and belongs to the technical field of biological fertilizer preparation.The biological fertilizer according to the application comprises, by weight fraction, 20-40 parts of blue-green algae mud fermentation liquor, 30-40 parts of straw, 18-36 parts of animal manure, 5-8 parts of urea, 6-12 parts of ammonium chloride and 0.2-1 part of yeast, wherein the blue-green algae mud fermentation liquor is prepared by mixing blue-green algae mud and heat condensate, then adding enzyme preparation, mixed Bacillus and inorganic salt mixture, and anaerobic fermentation culture.The application not only realizes the resource treatment of blue-green algae mud and reduces environmental pollution, but also the prepared biological fertilizer contains nutrients such as nitrogen, phosphorus and potassium required for plant growth, and the crops applying the biological fertilizer prepared by the application can not only improve the survival rate, but also further improve the yield per mu, improve the soil quality, and the soil porosity reaches 60-65%, without caking and residue.

This invention relates to an experimental apparatus and method for studying the water-blocking effect of two-component grouting under dynamic water conditions, belonging to the field of indoor testing in geotechnical engineering. It mainly includes a test chamber, a sealing cover, an air compressor, an automatic water supply machine, intelligent grouting equipment, a seepage pressure monitoring system, a wastewater collection tank, and grouting perforated pipes. Using this experimental apparatus, by changing the seepage velocity, soil porosity, grouting pressure, and the ratio of the two-component grout, the effects of different factors on the grouting volume, water-blocking effect, grouting time, grout diffusion range, and diffusion morphology can be compared. Through comprehensive analysis of the experimental results, the most suitable two-component grouting parameters for specific working conditions can be found, providing a reference for two-component grouting in dynamic water control projects.

The invention discloses a natural gas leakage point accurate positioning method fusing multi-source parameter dynamic correction. The method comprises the steps that S1, a distributed monitoring network is constructed (N is larger than or equal to 3 non-collinear integrated detection modules, a methane sensor with the detection limit smaller than or equal to 1 ppm is included, and environment parameters such as concentration and diffusion waves and the leakage rate are synchronously collected according to the frequency larger than or equal to 0 Hz); s2, establishing a double-stage diffusion coupling model (wherein the diffusion coefficient is corrected based on the Fick's law in the soil stage of Z < 0, the wind direction influence is corrected based on a dynamic Gaussian plume model in the atmosphere stage of Z > = 0, and coupling is realized through soil porosity correlation transfer coefficient); s3, constructing a multi-dimensional equation set, optimizing a diffusion wave distance equation through a calibration experiment, and solving a leakage point coordinate by adopting a particle swarm algorithm; and S4, verifying the calibration precision through residual errors, and adapting to low-concentration, high-wind-speed and complex soil scenes. The positioning error is smaller than or equal to 5 cm, the environment adaptation range is enlarged by three times, the false alarm rate is smaller than or equal to 0.1%, and the precise positioning requirement under the complex working condition can be met.

A computer-assisted method to monitor soil porosity at a field study site using a portable apparatus, the method including: acquiring a soil sample using a first container; recording a first measurement of a mass and a volume of the soil sample; adding the soil sample to a second container until the soil sample is added in entirety, wherein the second container is pre-filled with a fluid medium, wherein the soil sample is added to the second container without causing soil clustering, and wherein a second measurement of a mass of the second container with the fluid medium is recorded; recording a third measurement of a mass of the second container with the soil sample fully immersed in the fluid medium; calculating a porosity of the soil sample based on the first, second, and third measurements; and providing, at the field study site, the calculated porosity of the soil sample.

The invention discloses an improvement material and an improvement method suitable for soda saline-alkali soil in northeast China, and relates to the technical field of saline-alkali soil improvement. The improvement material suitable for the soda saline-alkali soil in the northeast region comprises humic acid modified biochar, coal gangue, yellow sand and organic fertilizer. According to the technical scheme, by adding humic acid modified biochar, the soil porosity is improved, the soil bulk density is reduced, the organic matter content is increased, the soil structure is effectively improved, and soil nutrients are increased; coal gangue and yellow sand are added to improve the air permeability and water permeability of soil, and formation of an agglomeration structure is facilitated; organic fertilizer and humic acid modified biochar are applied to provide a sufficient carbon source for soil; by adding the microbial agent, the soil microbial activity can be improved, organic matter decomposition and nutrient release are promoted, and the soil organic matter content and nutrient circulation capacity are improved. The method provided by the invention can be used for solving the problems of high cost, unsatisfactory improvement effect and non-persistent improvement during Northeast soda saline-alkali soil improvement.

The present application relates to the field of intelligent agricultural mycorrhizal fungus fertilizer production and application, and discloses a method and application for intelligent soil testing, mycorrhizal fungus fertilizer preparation, quality improvement and soil improvement, which is based on the use of full spectrum direct reading plasma emission spectrometry IPC-OES / ICP-MS, elemental analyzer VarioEL, ion chromatography HPIC combination, and qualitative and quantitative exchange capacity CEC, discloses a method and application for intelligent soil testing, mycorrhizal fungus (AMF) fertilizer preparation, quality improvement and soil improvement by using a chlorophyll nitrogen dynamic monitoring (SPAD value) instrument, a phosphorus online detector and a potassium online detector, which uses a double cultivation and propagation method of mycorrhizal fungus hypha secretion of sphaerocystin, activates plant related gene pathways, improves the quality of crops such as food, vegetables, tobacco leaves and Chinese herbal medicines, and the drought resistance, cold resistance and disease resistance of the crops, forms soil aggregates, increases soil porosity, effectively relieves compaction, and reduces the use amount of chemical fertilizer by 60-80% and pesticide by 70-90%.

The application discloses a cultivation method for promoting the growth of small old trees of oil camphor trees, ready-made fertilizer (compound fertilizer + dead camphor) is mixed with natural organic matter to form a good nutrient environment around the plants, through ditching, the soil around the plants is loosened, and the soil porosity around the plants is increased. A black plastic cloth artificial water collection concave pond is formed around the plants, during drought, after rainfall, water in the whole range of the plants flows to the roots of the plants, water collection is increased, and then, when rainfall is sufficient, the land under the plastic cloth can be drained, and the situation that the original soil topography is changed to form a water collection concave pond, but waterlogging affects the growth of the plants is avoided. The black plastic cloth concave pond is shaded and has the function of preventing grass, because of the space, the use of grass prevention cloth for grass prevention is avoided, the plant roots are prevented from floating on the soil and affecting the final growth result.

The invention belongs to the technical field of oil-tea land soil quality improvement, and discloses a pasture-based oil-tea land soil quality improvement method, which is characterized in that at least one kind of pasture is interplanted in an oil-tea land, and the pasture comprises broadleaf paspalum and stylosanthes guianensis; the planting density of the broadleaf paspalum is 30 + / -2 g / m < 2 >, and the planting density of the stylosanthes guianensis is 3 + / -0.5 g / m < 2 The pasture further comprises tephrosia rubescens and pigeonpea, the planting density of the tephrosia rubescens is 5 + / -0.5 g / m < 2 >, the planting density of the pigeonpea is 5 + / -0.5 g / m < 2 >, after the pasture is sown, the plant height needs to be controlled to be 30-40 cm in the young camellia oleifera forest, and the plant height needs to be controlled to be 40-55 cm in the adult camellia oleifera forest. The method provided by the invention can improve the diversity of plants in the camellia oleifera field; the under-forest vegetation coverage of the camellia oleifera forest can be improved, and a good habitat is built; the soil habitat can be improved, the water and soil loss of the camellia oleifera forest is reduced, the soil porosity is improved, and the soil bulk density is reduced; in addition, the forage grass can be used as forage grass to be eaten by livestock and poultry.

The invention discloses a mushroom bran compound fertilizer for improving saline-alkali soil and a preparation method and application thereof, and belongs to the technical field of saline-alkali soil improvement. The mushroom bran compound fertilizer comprises 70%-90% of corncob matrix mushroom bran and 10%-30% of organic materials. The corncob matrix mushroom bran comprises the following components in percentage by mass: 50% of corncob, 33.2% of sawdust, 10% of bran, 3% of corn flour, 2.5% of lime, 0.8% of gypsum and 0.5% of an oyster mushroom nutrient; the organic material is one or more of cow dung, sheep manure and pig manure. The preparation method of the mushroom bran compound fertilizer comprises the following steps: uniformly mixing the corncob matrix mushroom bran and the organic material, composting and fermenting, airing, crushing and sieving. The mushroom bran compound fertilizer is directly added into soil and is uniformly turned and mixed with plough layer soil, so that the nutrient content in the soil can be effectively improved, the alkalization degree of the saline-alkali soil is reduced, the soil porosity is improved, the granular structure of the saline-alkali soil is improved, and the permeability of the saline-alkali soil is improved.

The utility model relates to the technical field of sampling devices, and discloses a sampling device for soil detection, which comprises a main body, a stand column fixedly mounted on the main body, a handle fixedly mounted on the outer wall of the stand column, a convenient mechanism arranged on the inner wall of the main body, and an auxiliary mechanism arranged on the inner wall of the main body, according to the sampling device for soil detection, in order to avoid the defect that a soil sample in the device is manually buckled out, the slope rod is pulled, so that the slope rod slides on the inner wall of the handle and retreats from the limiting groove for contact limiting; after limiting is relieved, a spring can push a sliding rod to push a push plate to slide downwards on the inner wall of a stand column, the push plate pushes out a soil sample taken out from the interior of a main body while sliding downwards, and the situation that the soil sample is manually buckled out, so that the structure of the soil sample is damaged, and natural arrangement of soil particles is disordered is avoided; the judgment on the structural characteristics such as the soil porosity aggregate is influenced.

The invention relates to a meadow alkaline halophilic bacterium LH-SA-1 capable of absorbing sodium and reducing salt and alkali as well as a saline-alkali soil remediation microbial inoculum and application of the meadow alkaline halophilic bacterium LH-SA-1. The LH-SA-1 is separated from severe saline alkali soil in Jilin Baicheng, the classification name of the LH-SA-1 is Alkalihalophilus lindianensis, and the preservation number of the LH-SA-1 is CGMCC (China General Microbiological Culture Collection Center) No. 32707. The LH-SA-1 can tolerate 3%-45% of various salts such as sodium chloride, sodium sulfate, sodium carbonate and sodium bicarbonate and a strong alkali environment with the pH value of 9-12. The granular saline-alkali soil remediation microbial inoculum is prepared through composite sodium ion induced fermentation and double-membrane coupling concentration technologies in combination with a multifunctional carrier, the bacterial quantity is larger than or equal to 200 * 10 < 8 > CFU / g, and the catalase activity is larger than or equal to 130000 U / g. The microbial agent is applied to soda saline-alkali soil or coastal composite saline-alkali soil in northeast China, has multiple functions of remarkably reducing the saline-alkali content of the soil, improving the porosity of the soil, improving the activity of enzymes such as catalase, peroxidase, urease and alkaline phosphatase in the soil, improving the content of indoleacetic acid in the soil and the like, and provides an efficient and low-cost biological solution for saline-alkali remediation.

The invention discloses a mountain soil layer seepage subsurface erosion test device and method based on ultrasonic ranging, and belongs to the technical field of seepage subsurface erosion. The mountain soil layer seepage subsurface erosion test device comprises a water inlet tank, the right side of the water inlet tank is fixedly connected with a soil sample bin, and the right side of the soil sample bin is fixedly connected with a tail water tank; porous permeable plates are fixedly connected between the water inlet tank and the soil sample bin and between the soil sample bin and the tail water tank, the left side of the water inlet tank is communicated with a water inlet pipe, the upper portion of the right side of the tail water tank is communicated with a water outlet pipe, the bottom of the tail water tank is communicated with a particle collecting pipe, and the tail end of the particle collecting pipe is communicated with a particle collecting box. The test equipment disclosed by the invention not only can be used for testing normal seepage subsurface erosion, but also can be used for performing seepage subsurface erosion test on soil with different gradients and different densities and soil layers in different air pressure environments, and can be used for analyzing the dynamic change characteristics of pores and particle sizes of soil materials from a microscopic perspective.

The application relates to the technical field of data processing, and discloses a garden landscape intelligent planning method based on digital twinning. The method acquires three-dimensional geological profile data of a planning area, establishes an underground soil porosity and saturation tensor field, and divides the underground space into a multi-scale hexahedral microenvironment grid; root system morphological parameters of a candidate plant community are acquired, and a plant physiological feature library containing a root system water absorption rate curve and a nutrient absorption spectrum is constructed; a spatial mapping topological relationship between an aboveground plant three-dimensional canopy model and the underground grid is established, and water potential gradient changes of the microenvironment grid under different aboveground layout schemes are calculated. The application quantitatively constrains the surface layout and the dynamic distribution of underground soil water and fertilizer, solves the problem that the surface layout is disconnected from the underground ecological carrying capacity in the prior art, leading to plant decline, and improves the ecological stability of the digital twinning planning scheme.

The invention discloses a method for preparing a soil conditioner from fly ash and application, and belongs to the field of soil improvement and solid waste recycling, the method comprises the steps of fly ash grading screening, microwave-mechanical synergistic activation, acid-base modification, formula compounding, secondary biological activation and forming post-treatment, and the soil conditioner is prepared through multi-element activation and compounding. The activity and pore structure of the fly ash are improved. According to the method, the raw material utilization rate is high, the energy consumption is reduced by over 30%, the cost is low, and the prepared conditioner can remarkably reduce the pH and the total salt content of the saline-alkali soil, increase the porosity, organic matter and nutrients of the soil and improve the microbial environment; and the special formula can be used for promoting the growth of crops and increasing the yield by 15-20%, so that the special fertilizer is easy to industrially popularize and has both environmental and economic benefits.

The invention provides an intercropping method for realizing salinity regulation and control and nitrogen synergy through sophora alopecuroide-filmless cotton space configuration, and belongs to the technical field of saline-alkali soil ecological farming. Wide and narrow rows are arranged, planting is carried out alternately, sophora alopecuroide is sown in the wide row to serve as a sophora alopecuroide belt, and cotton is sown in the narrow row to serve as a cotton belt; respectively performing drip irrigation in a seedling stage and a squaring stage; and cutting and returning to the field. By adjusting the spatial configuration of the leguminous shrub sophora alopecuroides and the film-free cotton, the mulching film pollution is eradicated; sophora alopecuroides root growth can improve the soil porosity and promote salt leaching, the overground part can cover and block evaporation salt return, and the salt surface accumulation problem of the film-free cotton field is solved; sophora alopecuroides nitrogen fixation substitution can reduce nitrogen fertilizer consumption. Sophora alopecuroides green manure returning to the field can improve soil organic matters and realize synchronous improvement of carbon and nitrogen. According to the method, plant ecological niche regulation is taken as a core, the cost is low, four-dimensional collaboration of salt inhibition, nitrogen increase, pollution reduction and synergism of the saline-alkali soil cotton field can be realized, and a standardized solution is provided for agricultural green transformation in arid regions.

The invention discloses a macroelement water-soluble fertilizer and production equipment thereof, and relates to the technical field of water-soluble fertilizer production, and the macroelement water-soluble fertilizer comprises, by weight, 25-30 parts of a nitrogen source, 25-30 parts of a phosphorus source, 20-25 parts of a potassium source, 15-20 parts of an anti-hardening agent, 8-15 parts of a soil improvement agent, 0.2-0.5 part of a microbial agent, and 1.2-1.5 parts of trace elements. Wherein the anti-hardening agent can stimulate plant root systems to secrete polysaccharide viscose substances, and soil particles are cemented to form a stable aggregate structure; meanwhile, alginate oligosaccharide in the anti-hardening agent can be matched with bacillus mucilaginosus to promote the bacillus mucilaginosus to secrete polysaccharide and organic acid, so that the stability of soil aggregates can be enhanced, and soil pores are improved; the polyglutamic acid can adsorb calcium and magnesium ions in the soil and reduce insoluble salt formed by the ions, phosphate radicals and sulfate radicals, so that soil hardening is reduced.

This invention relates to a soil complex dielectric hybrid model that integrates interfacial polarization and temperature competition mechanisms, comprising the following steps: (1) measuring clay content, temperature, and humidity in the soil, while simultaneously determining the microwave frequency of the desired remote sensing product, and calculating the maximum bound water content and free water conductivity; (2) obtaining the real part of the free water dielectric considering the MW interfacial polarization mechanism; (3) obtaining the imaginary part of the free water dielectric considering the bound water effect, the MW interfacial polarization mechanism, and the temperature competition mechanism; (4) obtaining the complex dielectric constant of bound water; (5) based on the complex dielectric constants of free water, bound water, soil parent material, and air, as well as the maximum bound water content, soil porosity, volume fraction of soil parent material, soil humidity, and the wet soil complex dielectric hybrid model, calculating the real and imaginary parts of the complex dielectric constant of wet soil. This invention provides a soil complex dielectric hybrid model with higher accuracy and a wider frequency band applicability, offering a new parameterization scheme for passive microwave remote sensing and in-situ soil moisture inversion.

The application discloses a kind of based on multi-source data fusion and machine learning's soil porosity in-situ detection method, comprising: soil porosity in-situ detection machine learning model is deployed in the industrial computer of soil porosity in-situ detection device, and soil sample to be measured is collected;Using time domain reflection sensor probe insertion obtains the soil volume water content, soil temperature and volume conductivity of nearby soil;Data acquisition module acquires the layered image of internal horizontal section of soil sample to be measured and the change curve of soil resistance;Data processing module processes data, respectively obtains image feature, the average value of volume conductivity and soil resistance at standard temperature 25 DEG C;Soil volume water content and obtained data are used as the characteristic data of soil sample to be measured, and the characteristic data is substituted into the trained soil porosity in-situ detection machine learning model, and the soil porosity of soil sample to be measured is calculated.The method can quickly detect soil porosity, and detection efficiency is fast, cost is low, and detection precision is high.

The invention discloses a method for measuring a critical value of stratum porosity in shield earth pressure balance, and relates to the field of shield construction measurement. Comprising the following steps: establishing a pool with a circular bottom area S; high-pressure gas overflows upwards through the tunnel face of the shield tunneling machine, and the amount Q of the overflowed gas is controlled; the pool is observed until scattered bubbles are continuously and uniformly generated at the bottom of the pool, and in the corresponding time period t0-t1, the accumulated gas discharge volume reading V1 is calculated through the flow reading of the pressure maintaining system flowmeter; the shield tunneling machine maintains the stable pressure flow until the total volume of the discharged accumulated gas is close to the pre-estimated pore volume of the soil body, the corresponding time period is tbegin-top, the accumulated gas discharge volume reading V2 is calculated, and the critical value n of the stratum porosity is calculated. The invention further comprises a corresponding device, extra soil sampling experiments are not needed, formula calculation is carried out only according to the gas discharged by the pressure maintaining system, and convenience and rapidness are achieved.

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 provides a method for evaluating the pollution risk grade of micro-plastics in soil, and belongs to the technical field of ecological safety evaluation.The method comprises the steps that a soil sample of a target area is collected in a layered mode, the micro-plastics are extracted, and characteristic parameters of the micro-plastics in the soil sample are obtained, the micro-plastic characteristic parameters at least comprise micro-plastic abundance, micro-plastic type distribution, adsorbed pollutant concentration, soil organic matter content, soil porosity and annual average rainfall, and micro-plastic shape, color and material composition, processing the characteristic parameters to generate a plurality of risk assessment values, and performing risk grading on the soil sample according to the risk assessment values, according to the evaluation method for the micro-plastic pollution risk grade in the soil, the micro-plastic soil pollution grade is subdivided, so that agricultural cultivation activities are guided more accurately.

The present application relates to the field of geotechnical engineering foundation treatment, in order to improve the calculation efficiency of pile spacing, provide a kind of gravel pile spacing calculation method, system, device, storage medium and product, by obtaining correction coefficient, pile diameter, soil thickness before processing, soil thickness after processing;Based on not considering vibration subsidence and considering the treatment volume of soil body of enlarged pile diameter, and the treatment volume of soil body when considering vibration subsidence and the pile diameter is unchanged, the two are equivalent, calculate the gravel pile spacing, without obtaining soil porosity ratio through experiment, the soil thickness before and after processing is obtained conveniently, so as to simplify the calculation process;It can quickly calculate the pile spacing before preliminary design, significantly save working time;Improve economic efficiency, reduce the cost of early exploration.

The invention provides a microbial soil conditioner for in-situ rejuvenation of border trees. The soil conditioner comprises a chemical loosening conditioner (composed of modified sodium carboxymethyl cellulose and citric acid-malic acid composite organic acid), a biological stimulant (composed of bacillus subtilis exopolysaccharide and a seaweed extract) and a physical loosening auxiliary agent (composed of expanded perlite and crushed garden waste). Functional strains (bacillus subtilis and bacillus mucilaginosus) and a protective agent (food-grade sucrose fatty acid ester). According to the invention, a triple synergistic system of chemical loosening-physical supporting, biological stimulation-microbial colonization and nutrient activation-stress tolerance adaptation is constructed, the chemical conditioner rapidly disperses clay particles, the physical auxiliary agent constructs a stable pore skeleton, the biological components promote aggregate formation and microbial colonization, the soil porosity can be increased from less than 15% to 20% or more within 7 days, and the soil quality is improved. The conductivity is reduced to 1.8 mS / cm or below within 30 days, and the pH is adjusted to 6.5-7.5.

The invention provides a rural autonomous resource dynamic scheduling system based on space-time pollution traceability. Which comprises a pollution data acquisition unit used for acquiring pollution concentration, diffusion distance and diffusion time, and a resource scheduling unit used for distributing treatment resources according to pollution data, and is characterized by further comprising a hidden factor sensing unit, a diffusion correction calculation unit, a resource demand evaluation unit and an execution feedback unit, the recessive factor sensing unit is used for acquiring activity intensity of villagers, soil porosity, near-ground wind speed and air humidity, and the diffusion correction calculation unit is used for dynamically correcting a space-time diffusion rule acquired by the pollution data acquisition unit according to parameters output by the recessive factor sensing unit. The resource demand evaluation unit calculates the total demand of the governance resources based on the corrected diffusion law, and the rural pollution diffusion characteristics can be accurately described, and the resource scheduling adaptability is improved.

The utility model provides a soil deep remediation device for ecological remediation, and relates to the field of ecological remediation. The soil depth remediation device for ecological remediation comprises a hoistway and a partition plate, the hoistway is fixedly connected with the partition plate, a hanging piece used for controlling the hoistway to move is installed at the upper end of the hoistway, a telescopic head is slidably connected to the bottom end of the hoistway, a plurality of notches are formed in the telescopic head, a spray head used for rotating is installed in each notch, and the bottom end of the hoistway is provided with a water inlet. The plurality of nozzles are controlled to rotate through a transmission mechanism; according to the soil deep remediation device for ecological remediation, soil does not need to be pumped out, transported and transported back, only the hoistway needs to penetrate into the soil, the soil deep remediation device is simple and convenient, the remediation period is short, in the remediation process, the telescopic head and the spray head stretch out, the telescopic pipe can be in butt joint with the spray head, and when gas is injected, butt joint work can be completed; and moreover, the porosity of the soil can be increased, the soil remediation uniformity can be improved when the agent is injected, and the remediation time is further shortened.

The utility model relates to the technical field of cultivated land remediation, and discloses a cultivated land fertility improving device which comprises a vehicle body and further comprises a transferring and lifting module arranged on the vehicle body, mixing and transferring modules arranged on the two sides of the vehicle body respectively, a soil shoveling module arranged on the front side of the vehicle body, and dosing modules arranged on the front sides of the two mixing and transferring modules respectively. After being shoveled and collected by the soil shoveling module, soil is transferred into the mixing and transferring modules on the two sides through the transferring and lifting module to be turned over. The soil spraying module is arranged on the rear side of the vehicle body and comprises a spraying barrel, the spraying barrel is transversely arranged left and right, the two ends of the spraying barrel are provided with material receiving hoppers connected with the mixed material transferring module respectively, a spraying opening is formed in the side wall of the rear side of the spraying barrel, an impeller is rotationally arranged in the spraying barrel, and a rotating shaft of the impeller is connected with a driving shaft of a spraying motor arranged on the spraying barrel. Compared with the prior art, the method has the advantages that the soil and the medicine are mixed more uniformly, and the soil looseness and the oxygen content are improved through spraying.