68 results about "Red soil" patented technology

The invention belongs to the field of soil environment pollution simulation and prediction, and provides a prediction method based on a two-point chemical unbalanced model, which is used for quantitatively evaluating the effect of regulating and controlling the migration behavior of p-nitrophenol in acid red soil by straw stalk biochar. According to the method, a biochar-red soil composite medium system is constructed, a soil column leaching experiment is carried out to obtain penetration curve data, a two-point chemical unbalance model in CXTFIT software is utilized to carry out parameter inversion, and key parameters such as a retardation factor, a two-region distribution coefficient, a mass transfer coefficient and a liquid phase degradation coefficient are accurately identified. Model verification shows that the goodness of fit is high, and a parameter change rule reveals the inherent mechanism of enhancing the pollutant retention capacity, changing the proportion of fast and slow adsorption sites and influencing mass transfer kinetics by the biochar. Based on the verified model, the long-term migration behavior and pollution risk of p-nitrophenol under different environmental conditions can be simulated, and a scientific basis is provided for groundwater pollution control and remediation strategy optimization.

The invention discloses an intelligent stability control method, system and device for a red soil slope, and relates to the technical field of monitoring control, and the method comprises the steps: S1, constructing a multi-scale hydraulic-mechanical coupling model and a special parameter library for red soil; s2, monitoring and collecting data information in real time; s3, the seepage-deformation coupling behavior of the slope and the shearing strength of unsaturated soil are analyzed; s4, dynamically predicting an air inlet value parameter alpha (t) and slope suction evolution, and updating a safety coefficient; s5, predicting seepage and deformation response of the side slope; s6, correcting the parameters of the special parameter library for the red layer soil, and returning to S2; s7, triggering a dynamic control module according to the safety coefficient; s8, adjusting the control measures according to the safety coefficient; s9, an executing mechanism corresponding to the dynamic control module works according to the adjusted control measures, and the step S2 is executed again; according to the method, the slope stability evaluation precision and the control efficiency are remarkably improved, and an efficient, intelligent and sustainable solution is provided for red soil slope disaster prevention and control.

The invention provides an application of a nitrification inhibitor and biochar as a soil conditioner in enhancing drought resistance of plants, a preparation method of the biochar is as follows: moso bamboo stalks are taken as raw materials, pyrolysis is performed for 4-8 hours under an anoxic state of 250-400 DEG C, soil is red soil, and the plant is polygonatum cyrtonema, and an application method comprises the following steps: adding a nitrogen fertilizer into the soil, the addition amount of the nitrification inhibitor is 1% of the content of nitrogen added to the soil, and the addition amount of the biochar is 3% of the mass of the soil. Through combined application of the biochar and the dicyandiamide, the drought resistance of the polygonatum cyrtonema and the benefits of soil microbial communities are remarkably improved.

The invention discloses a red soil dry land soil microbial diversity detection method based on multicolor developing test paper, and belongs to the technical field of soil environment microbial detection. According to the method, test paper loaded with different color developing agents is designed, a specific color developing reaction is triggered by combining microbial metabolic activity, and color developing characteristics are converted into parameters such as microbial diversity indexes and dominant species proportions by utilizing an image analysis model. The detection device comprises an image acquisition module and a data analysis module, and quantitative association of color development features and diversity is realized through a machine learning model. Compared with the prior art, the method has the advantages that the cost is extremely low, the detection time is shortened to be within 30 minutes, the method is suitable for field real-time monitoring of the red soil dry land, an efficient, low-cost and portable detection tool is provided for soil health management, and the method is particularly suitable for soil health assessment of resource-limited areas.

The utility model discloses a tool for soil teaching in geography, which relates to the technical field of geography teaching appliances, and comprises a soil storage box, a soil experiment box and a soil acidity-alkalinity testing device, the soil experiment box comprises an experiment box body and an experiment box cover, the rear side of the experiment box body is fixedly connected with the front side of the soil storage box, and the experiment box cover is fixedly connected with the soil storage box. The experiment box cover is hinged to the side, away from the soil storage box, of the top of the experiment box body and can be buckled between the top of the experiment box body and the front side of the soil storage box, so that the soil storage box and the soil experiment box are spliced to form a cubic structure, and when the experiment box cover is forwards turned over by 180 degrees, an experiment platform can be formed in the middle of the experiment box cover; the interior of the soil storage box is divided into a plurality of first compartments, the interior of the soil experiment box is divided into a plurality of second compartments, at least five groups of first compartments and second compartments are respectively used for placing green soil, carclazyte, black soil, red soil and loess, and at least one group of first compartment and second compartment is used for placing a soil acid-base property testing device.

The present application relates to the technical field of soil data analysis, and particularly relates to a method for analyzing red soil of a tower base of a power transmission line based on big data, comprising: collecting red soil data of a tower base area of a power transmission line, and sequentially performing cleaning, denoising, filtering and feature extraction operations on the red soil data to output red soil features, training an initial model according to the red soil features to output a deep learning model; using the deep learning model to analyze the red soil data to output an analysis result, determining the fertilizer application of the red soil of the tower base area of the power transmission line according to the analysis result; determining whether the analysis accuracy of the red soil data meets the requirements based on the loss rate of the red soil data; if the analysis accuracy does not meet the requirements, adjusting the collection frequency of the red soil data; and if the analysis reliability does not meet the requirements, adjusting the learning rate of the deep learning model. The present application improves the analysis accuracy of the red soil data.

The invention provides a magnesium modified lignin-based carbon material as well as a preparation method and application thereof, and belongs to the technical field of soil improvement. Lignin is subjected to hydrolytic depolymerization to release active functional groups, a soluble magnesium compound is doped at the same time, and then through high-temperature calcination, the magnesium compound is converted into magnesium oxide to be successfully embedded into the lignin carbon material, so that porous sites of lignin can be improved, and the lignin carbon material can be used for preparing a composite material. And magnesium oxide can be uniformly fixed in the recombinant lignin carbon matrix. When the magnesium-modified lignin-based carbon material is applied to the field, the pH value of soil can be increased, soil salt-based ions can be supplemented in time, and the negative effect on crop growth caused by soil acidification is reduced. The magnesium-modified lignin-based carbon material is applied to tests for relieving urea-driven red soil re-acidification and simulating growth of corn in southern field red soil, and is a feasible and effective strategy for relieving soil acidification and improving the growth environment of crops.

The present application relates to the field of agricultural soil improvement and orchard fertilization technology, and discloses a kind of southern red soil area orchard annual green manure covering and carbon-increasing quality improving method, including that mature livestock and poultry manure is mixed with industrial grade calcium-magnesium phosphate fertilizer and applied to surface soil before green manure sowing;Sowing Indian cowpea in spring, mixed sowing Chinese milk vetch and field radish in autumn;Green manure of leguminous plants is mowed in situ when it is in full bloom to initial pod stage to make it flat;Uniformly spray directional wood-decay fungi complex liquid to the surface of green manure;Use pyroligneous acid to wet crushed dry crop straw, cover micro-acid straw on the surface of green manure;Mechanically subsoil in the following autumn, and inject PAM composite biomass charcoal suspension into the bottom of subsoiling groove simultaneously.The present application neutralizes and intercepts ammonia gas released by green manure to block nitrogen volatilization by using micro-acid straw, accelerates the degradation of macromolecular lignocellulose by using wood-decay fungi, and constructs deep stable carbon sink by combining with deep injection of porous carbon suspension, thereby effectively improving the overall carbon pool capacity of red soil profile.

The invention discloses ammonium-tolerant nitrogen-fixing paenibacillus and application thereof, and belongs to the technical field of agriculture. The bacterial strain is preserved in Guangdong Microbial Culture Collection Center on September 19, 2025, the preservation number is GDMCC 66998, and the bacterial strain is named Paenibacillus sp. By taxonomy. The ammonium-tolerant nitrogen-fixing paenibacillus from the red soil rice field is obtained through screening, the strain still shows high nitrogenase activity under the condition of 80-100 mM NH4 < + >, and the limitation that traditional nitrogen-fixing bacteria are prone to being inhibited by ammonium is broken through. In addition, the strain can significantly improve the germination rate of rice seeds, promote the root length, plant height and biomass accumulation of rice seedlings, and show a good growth promotion effect. Due to the characteristic of forming spores, the strain can also be prepared into a microbial fertilizer preparation which is used for nitrogen fertilizer replacement and synergism in a rice field ecological system.

The application discloses a fertilizer additive combination for improving red paddy soil aggregate and potassium availability and a method for applying the same, and belongs to the technical field of soil improvement and fertilization. The application realizes the improvement of the physicochemical properties of soil by compounding the fertilizer with functional additives and applying the fertilizer in layers and steps. The application has the characteristics of stable improvement effect, wide application range, simple operation, low cost and the like, and is suitable for the comprehensive improvement and sustainable utilization of the physicochemical properties of red paddy soil.

The invention belongs to the technical field of plant cultivation, and particularly relates to a cultivation medium for citrus potting and a preparation method thereof. The culture medium for citrus potting comprises the following components in percentage by volume: 20%-30% of sandstone, 25%-35% of humus soil, 15%-25% of red soil, 5%-10% of decomposed mushroom dregs and 10%-20% of volcanic rock. According to the citrus potting culture medium, the gravel, the volcanic rock, the humus soil and the red soil are scientifically proportioned, on one hand, the gravel forms a drainage main channel, volcanic rock micropores adsorb moisture and air, and the humus soil and the red soil form water retention aggregates, so that a rhizosphere environment with high air permeability, water permeability and water and fertilizer retention is created, and accumulated water hardening and rapid water loss are avoided; meanwhile, the red soil stabilizes pH and provides mineral elements, and quick-acting and long-acting nutrient supply is achieved through the decomposed mushroom residues and the humus soil; on the other hand, gravels and volcanic rocks are used as frameworks, humus soil and red soil are used as fillers, the stable structure of the matrix is guaranteed, and oranges are prevented from lodging due to overweight fruit bearing.

The invention discloses a compound microbial agent for improving the yield of red soil peanuts and a preparation method and application thereof, and relates to the technical field of microorganisms, the compound microbial agent is composed of photosynthetic bacteria ISP-1 and burkholderia cepacia ISOP 5, and the mass part ratio of the photosynthetic bacteria ISP-1 to the burkholderia cepacia ISOP 5 is 1: 1. The Burkholderia cepacia ISOP 5 is preserved in the China Center for Type Culture Collection, the preservation number is CCTCC NO: M 2020482, and the Burkholderia cepacia ISOP 5 has high acid resistance and can produce alkali and solubilize phosphorus. The invention not only provides an efficient microbial inoculum product, but also provides a complete solution from soil improvement to plant health care to scientific application, and has great application value for promoting green, high-yield and efficient planting in a red lozenia production area. Wide market development prospects and application and popularization values are realized in the field of peanut planting.

The application discloses a kind of for silt dam prefabricated framework-3D printing homologous composite soil and application, the composite soil is by loess, three-toed horse red soil constitutes soil matrix, sand, straw, geopolymer and biological macromolecular thickening agent are auxiliary material, prepared by using the same soil source.This application realizes material performance complementation by homologous preparation, solves the adaptability problem of silt dam prefabrication and 3D printing material from the root, relies on unique raw material combination and preparation process optimization composite soil comprehensive performance, significantly improves silt dam structure stability and durability.The composite soil can be prepared prefabricated module and 3D printing shell respectively, and the two cooperate with each other, can effectively guarantee the realization of silt dam comprehensive function, is applicable to silt dam prefabricated framework and 3D printing material application scene.

The invention relates to the technical field of red soil improvement, and discloses an organic material recommendation method based on red soil hardening reduction. The method comprises the steps that hardening index data and soil environment parameters of red soil are collected, the hardening index data comprise the soil hardness value and the permeability coefficient, and the soil environment parameters comprise the pH value, the organic matter content and the soil texture. The collected data are integrated to form a comprehensive data set, abnormal values and missing values are removed through quality verification to obtain clean soil data, then a hardening assessment algorithm is used for processing and calculating a hardening reduction priority score, a matching list is retrieved from an organic material knowledge base according to the score, and a matching result is obtained; and finally generating a report containing the recommended material name, the suggested application amount and the application opportunity. The method provides scientific guidance for red soil improvement, realizes accurate recommendation of organic materials, assists in improving the hardening condition of red soil, improves the rationality and benefits of agricultural production, and has important practical value in agricultural scenes in southern red soil regions.

The invention relates to the technical field of durian seedling cultivation, in particular to a large-scale planting method for durian tree northern transplantation in northern latitude 21-24 DEG C. A seedling cultivation matrix is composed of 30% of humus soil, 30% of red soil, 20% of bagasse and 20% of walnut meal, 1% of compound microorganisms are added, the mixture is evenly mixed and then used for durian seedling cultivation, and planting comprises the steps of site selection, in the areas, the altitude is lower than 750 m, the annual average temperature is 22 DEG C or above, the annual accumulated temperature is 7000 DEG C or above, the lowest air temperature in recent 10 years is not lower than 10 DEG C, and the relative air humidity is 75%-85%; according to the method, a whole set of unique cultivation technology is created according to the growth and development attributes of the durian and the three-dimensional environment characteristics of the durian in the northern latitude of 21-24 degrees, large-scale cultivation of multiple areas in Yunnan with the northern latitude of 21-24 degrees is successful, under the technical scheme, the root rot rate of the seedlings is lower than 3%, and the survival rate of the durian is higher than 3%. The survival rate of sapling planting can reach 98% or above, and the survival rate in one year can reach 96% or above.

This invention discloses a red soil composite substrate suitable for the cultivation of *Anoectochilus roxburghii* and its application, belonging to the field of *Anoectochilus roxburghii* cultivation technology. It addresses the limitations of existing technologies, such as difficulty in seed germination, slow growth, and dwindling wild resources, as well as the poor aeration and root rot issues in red soil distribution areas during artificial cultivation. These limitations hinder the large-scale and efficient cultivation of *Anoectochilus roxburghii* in red soil regions. The red soil composite substrate provided by this invention is composed of red soil, peat moss, perlite, and bark mixed in a specific volume ratio, specifically (2-4):1:1:1. Through the synergistic effect of the components, it leverages the water and fertilizer retention properties of red soil while improving its aeration. This scientifically and thoroughly solves the technical problems of "acidic, infertile, and compacted" soil, poor aeration, and root rot in the vast red soil areas of southern China, making red soil a suitable cultivation substrate for *Anoectochilus roxburghii*.

The invention discloses a composite microbial inoculant capable of efficiently degrading sugarcane leaves to produce humus and application of the composite microbial inoculant, and belongs to the technical field of microbial degradation. The composite microbial inoculant for efficiently degrading the sugarcane leaves to produce the humus is prepared from a lignin degrading bacterium (Sporobomyces phaffii) X-3, a cellulose degrading bacterium (Tetradium sp.) Lignocellulan-6 and a phosphorus solubilizing fungus (Trichoderma reesei SIP-2, and the composite microbial inoculant for efficiently degrading the sugarcane leaves to produce the humus is prepared from the following raw materials: the lignin degrading bacterium (Sporobomyces phaffii) X-3, the cellulose degrading bacterium (Tetradium sp.) Lignocellulan-6 and the phosphorus solubilizing fungus (Trichoderma reesei SIP-2; aiming at the soil characteristics of the strong acid red soil and the resource utilization requirement of the sugarcane leaf waste, the functional strains adaptive to the acid environment are screened and optimally combined, so that the rapid decomposition of the sugarcane leaves and the efficient generation of the humus are realized, meanwhile, the contents of rapidly available phosphorus and rapidly available potassium in the soil are remarkably increased, and the pH of the soil is improved; the complex microbial inoculant is simple in preparation process and remarkable in application effect, can effectively relieve the problem of degeneration of a southern red soil ecological system, provides technical support for green development of the sugarcane industry, and has wide application prospects.

The application discloses a kind of red soil dry land quick and slow dual-effect alkali compound fertilizer and preparation method thereof, belong to fertilizer technical field.Function modularization particle design is used, including by weight parts, 35-50 parts of alkaline control particle, 30-45 parts of quick-acting nitrogen phosphorus potassium particle, 15-25 parts of slow-acting nitrogen particle and 3-5 parts of density adjusting component;The alkaline control particle is composed of 20-40 parts of composite alkaline substance, 1-5 parts of hydroxyl modified zeolite and 2-3 parts of gypsum;Among them, the composite alkaline substance is composed of 5-15 parts of limestone powder and 15-25 parts of dolomite powder;The limestone powder is quick-acting alkaline component, and the dolomite powder is slow-acting alkaline component.The beneficial effect is remarkable: first, realize long-acting control red soil dry land acidification, through limestone powder quick-acting neutralization surface acid, dolomite powder long-acting supplement base ion, hydroxyl modified zeolite adsorption buffer, avoid acidification rebound;Second, strengthen exchangeable Al 3+ Passivation, Ca 2+ / Mg 2+ Competitive adsorption sites, hydroxyl zeolite directional adsorption free Al 3+ , Alleviate the harm of aluminum toxicity.

The invention provides a recarburization and acid reduction method for strengthening formation of brick red soil mineral binding state organic carbon. The recarburization and acid reduction method comprises the following steps: S1, constructing a functional microbial population; S2, activating and modifying minerals; S3, preparing a multi-layer gradient coating composite preparation; according to the invention, a synergistic construction method of'functional strain selection + specific phage regulation 'is adopted for the first time, and the selected strains are all strains with strong adaptability to the laterite acidic habitat, and can simultaneously realize multiple functions of microbial residual carbon formation, extracellular polymeric colloid synthesis, iron reduction coprecipitation and the like. According to the method, multiple targets of efficient enrichment of mineral binding state organic carbon, especially short-sequence mineral binding state organic carbon, remarkable improvement of soil pH, great increase of corn yield and the like are achieved at the same time, comprehensive benefits are remarkable, and the method is environmentally friendly and high in sustainability.

This invention discloses a coffee shell solid-liquid dual-effect soil conditioner, its preparation method, and its full resource utilization method, belonging to the fields of agricultural solid waste resource utilization and soil improvement technology. The conditioner consists of a coffee shell biochar solid conditioner and a coffee shell liquid bio-conditioner. The solid conditioner is prepared by low-temperature anaerobic carbonization, pulverization, and compounding of coffee shells. The liquid conditioner is prepared by coffee shell pulping, anaerobic fermentation, enzymatic hydrolysis, filtration, dilution, and compounding. The liquid filtration residue is returned to the solid carbonization process, achieving 100% waste-free utilization of all components of the coffee shells. This invention provides a synergistic solid-liquid dual-effect, which can effectively repair the structure of acidic red soil, regulate pH, and achieve carbon sequestration, while simultaneously providing rapid soil nutrient replenishment and activating microorganisms, significantly improving soil fertility and the quality of tea and coffee crops. The process is simple, low-cost, and has high ecological value, making it suitable for the fields of agricultural waste resource utilization and green soil improvement.

The application provides a method for preparing aerogel material from red soil and application thereof, and belongs to the technical field of environmental ecological restoration. The method comprises the following steps: mixing pretreated red soil with alkali at a certain ratio to perform high-temperature alkali fusion treatment to obtain alkali fusion solids, then mixing the alkali fusion solids with hydrochloric acid solution to perform acid immersion treatment to obtain a silicon and aluminum-rich solution, and finally performing certain aging treatment on the silicon and aluminum-rich solution to obtain porous aerogel. The aerogel synthesized by the method has good adsorption and fixation performance on sediment and water phosphorus pollutants due to its rich porosity and high specific surface area, and can be used as an environmental functional material to effectively control the release of endogenous phosphorus pollution in sediment in actual application.

The invention belongs to the technical field of microbial agents for soil improvement, and particularly relates to application of a microbial agent for promoting carbon immobilization of a red soil rice field. The microbial inoculum is rhodococcus erythropolis or a synthetic microbial inoculum of rhodococcus erythropolis and pseudomonas aeruginosa, and after the rice seedlings are transplanted to red soil for 3 days, 25mL of suspension liquid of the related microbial inoculum is inoculated to the rhizosphere of each rice seedling. According to the application, the rhizosphere microenvironment is improved, input of plant photosynthetic carbon into soil is activated, meanwhile, the carbon utilization efficiency and conversion capacity of soil in-situ microbial communities are remarkably improved, accumulation of microbial source carbon is promoted, the molecular composition structure of soluble organic matter is remodeled, and finally formation and accumulation of a soil carbon library are promoted and stabilized.

The invention discloses a root limiting culture medium and a preparation method thereof. The medium is prepared from the following components: red soil, stone millet, humus soil, turf and plant ash. The matrix is prepared from the following raw materials in parts by volume: 15-25 parts of red soil, 30-50 parts of stone millet, 20-40 parts of humus soil, 2-8 parts of turf and 3-7 parts of plant ash. According to the formula of the substrate composed of the red soil, the stone millet, the humus soil, the turf and the plant ash in a specific proportion, the root-limited cultivation effect of the citrus is effectively improved, the substrate is excellent in volume weight, pH value, water holding capacity, organic matter content, service life and the like, and growth of citrus root systems and improvement of the yield are effectively promoted.

The present application relates to a kind of red soil organic matter inversion method based on unmanned aerial vehicle hyperspectral image and spectral index, belong to agricultural soil organic matter content measurement technical field.The method includes: obtaining unmanned aerial vehicle hyperspectral image and carrying out initial pretreatment and secondary pretreatment;Obtain the spectral index of the unmanned aerial vehicle hyperspectral image after secondary pretreatment;Wherein, spectral index includes two-band spectral index and three-band spectral index;The pearson correlation coefficient between each spectral index and the red soil organic matter content in the unmanned aerial vehicle hyperspectral image after secondary pretreatment is obtained, and the spectral index with high correlation is selected as spectral characteristic variable;Red soil organic matter inversion model is constructed and parameter optimization is carried out, and spectral characteristic variable is input into the optimized red soil organic matter inversion model, to obtain red soil organic matter inversion result.The present application aims to solve the technical problems of insufficient utilization of spectral information and low spatial inversion accuracy of soil organic matter in the prior art.

The invention provides a composite flora microbial organic fertilizer for promoting efficient utilization of phosphorus in barren red soil and application of the composite flora microbial organic fertilizer. The composite flora comprises Burkholderia burkholderia BurRPS, Bacillus amyloliquefaciens RFBac-1 and Enterobacter ludwigii RFEnt-1, the Burkholderia burkholderia BurRPS can efficiently activate phosphorus in red soil insoluble iron phosphate, the Bacillus amyloliquefaciens RFBac-1 can promote crop root development to form a shallow root type beneficial to phosphorus absorption, and the Burkholderia burkholderia BurRPS, the Bacillus amyloliquefaciens RFBac-1 and the Enterobacter ludwigii RFEnt-1 can effectively activate phosphorus in red soil insoluble iron phosphate. The enterobacter ludwigii RFEnt-1 can promote the expression level of phosphorus absorption key genes of crop roots, so that the utilization efficiency of phosphorus in red soil is jointly improved. The composite flora microbial organic fertilizer is a fertilizer obtained by combined application of the composite flora and a common organic fertilizer. The composite flora microbial organic fertilizer can be applied to soil to significantly improve the effectiveness of phosphorus in barren red soil, improve the growth of rape plants and promote the yield increase of rape.

The invention relates to a rice growth-promoting rhizobacteria for activating insoluble phosphorus in red soil and application of the rice growth-promoting rhizobacteria. The invention discloses a Pandoraea sp. PanRPS strain with phosphorus dissolving capacity in acid red soil and application of the Pandoraea sp. PanRPS strain. The strain PanRPS can take insoluble iron phosphate as a substrate to activate phosphorus in the insoluble iron phosphate, so that the growth of rice under low phosphorus stress is promoted. The functional strain provided by the invention is of great significance in relieving low-phosphorus stress in a rice planting system in an acid red soil medium-low yield field, promoting rice growth and increasing the rice yield in a red soil area.

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

The invention discloses a rhizosphere phosphate-solubilizing bacterium for activating insoluble inorganic phosphorus in southern red soil and combined application of prebiotics of the rhizosphere phosphate-solubilizing bacterium. The invention provides rhizosphere phosphorus solubilizing Burkholderia capable of activating insoluble inorganic phosphorus in southern red soil, and also provides prebiotic oxalic acid capable of specifically enhancing the phosphorus solubilizing capacity of the strain. By directly applying the strain, insoluble phosphate (iron phosphate) in red soil can be activated, available phosphorus can be released, and phosphorus deficiency stress of red soil crops can be relieved; the combined application of the strain and prebiotics can further improve the rhizosphere phosphate solubilizing and crop growth promoting effects. The invention has important significance for developing a functional microbial preparation for enhancing the phosphorus activation capability of the crop rhizosphere under the low phosphorus stress and promoting the growth and development of the crop.

This invention discloses a compound microbial agent for targeted improvement of acidified soil in the red soil region of Guangxi and its application, belonging to the field of agricultural microbial technology. Addressing the limited effectiveness of traditional improvement methods, this invention provides a microbial agent composition made by compounding acid-tolerant alkali-producing strains, nitrogen-fixing strains, and phosphorus-solubilizing strains in a specific ratio, combined with a synergistic carrier to enhance the colonization rate of the strains. Through the synergistic effect of the strains, this agent can stably colonize and continuously produce alkali in an acidic environment, simultaneously improving the availability of soil nutrients. This invention also discloses an application method suitable for Guangxi fields, which is simple and highly adaptable. This invention can raise the pH of acidified soil by 0.8 to 1.2 units within 30 days, significantly improve soil physicochemical properties, promote crop growth, and achieve a yield increase of ≥12% per mu (approximately 0.067 hectares). It is environmentally friendly, long-lasting, and stable, making it suitable for the ecological restoration and large-scale production of acidified farmland in Guangxi.

The invention discloses granular soil and a production method and application thereof, and relates to the technical field of agricultural cultivation media. The brick is prepared from the following raw materials: 70% of red soil, 15% of smoke rock and 15% of river sand. The granular soil comprises the following trace elements: nitrogen, phosphorus, potassium, iron, manganese, zinc, boron and molybdenum. By adopting the scientific proportion of the red soil, the smoke rock and the river sand, the fertilizer is rich in nitrogen, phosphorus, potassium and various trace elements such as iron, manganese, zinc, boron and molybdenum, and the nutritional requirements of plants in the whole growth period are met. The granular soil is regular in particle shape and moderate in hardness, natural gaps are formed among the particles, the air permeability and drainage of the soil are effectively improved, water accumulation and root rotting are prevented, water and nutrients can be locked through micropore structures in the particles, slow release is achieved, the watering frequency and nutrient loss are remarkably reduced, and the fertilizer utilization rate is increased. Standardized crushing, mixing, granulating, drying and screening procedures are adopted, so that particles are uniform, moderate in hardness and not easy to pulverize, and the product quality is stable and reliable.