69 results about "Soil acidification" patented technology

The invention belongs to the technical field of crop planting and soil improvement, and particularly relates to a soil conditioner, application and a method for planting wheat by combining the soil conditioner with soil. The soil conditioner is prepared from dolomite, quick lime and organic fertilizer. The invention further provides application of the soil conditioner in improvement of acidic yellow brown soil in southern Henan province. The invention also provides a method for planting wheat by mixing the chemical fertilizer, the soil conditioner and soil. The method is mainly used for solving the problem of soil acidification in the yellow and brown soil area and solving the problem that growth of wheat is inhibited due to the soil acidification problem, and has important significance on guaranteeing the quality of cultivated land and food safety in the southern Henan area.

The invention belongs to the technical field of rice cultivation and soil improvement, and particularly relates to a fertilization method for acid rice field soil improvement and application thereof. According to the method, an organic fertilizer is used for replacing 25% of conventional formula fertilizer (formula fertilizer containing nitrogen, phosphorus and potassium), and medium trace elements of magnesium, boron and zinc are applied in a combined manner; or medium trace elements such as magnesium, boron and zinc are additionally applied on the basis of application of a conventional formula fertilizer, and quick lime is added, so that the problem of aggravated soil acidification caused by application of a single chemical fertilizer is relieved, the rice yield is increased, meanwhile, the content of exchangeable acid in soil is reduced, and the total amount of exchangeable salt-based ions in the soil and the effective state content of elements are increased, thereby increasing the pH of the soil and improving the yield of the rice. The acid resistance of the soil is enhanced, and the acid soil is effectively improved.

The invention relates to a method for improving acid soil by using morchella sextelata, in particular to application of planting morchella sextelata in acid soil improvement, and belongs to the technical field of microorganisms. The strain is applied in the following manner: spreading mycelia in acidified soil, adsorbing and fixing soil ions through metabolic activity of the mycelia after soil covering, promoting formation of granular structures, enhancing salt leaching, selectively absorbing excessive cations, and increasing HCO concentration to neutralize H. After application, the pH value of soil is increased from 5.84-5.92 to 6.35-6.42, the conductivity is reduced by 31.13%, and the water-soluble total salt is recovered to the level of uncultivated soil. The strain provides an efficient biological solution for soil acidification treatment of a greenhouse vegetable base.

The invention relates to the technical field of agricultural equipment, in particular to a portable micro-area water and fertilizer drip irrigation all-in-one machine which comprises a bearing unit which comprises multiple sets of rollers and a pushing frame fixedly connected with the tops of the multiple sets of rollers. The water storage unit comprises a water storage mechanism arranged on the pushing frame, and the drip irrigation unit comprises a detachable fertilizer tank arranged on the pushing frame and used for storing fertilizer and a drip irrigation mechanism arranged on the pushing frame; by arranging a bearing unit with a plurality of groups of rollers and a pushing frame, the equipment can flexibly move and can be used in small-range scenes such as scientific research test fields, household gardening and hillside orchards, a stirring mechanism of the water storage unit is used for stirring water and fertilizer, and a monitoring control unit is matched to feed back data in real time and control starting and stopping of stirring. The fertilizer application precision can be improved, meanwhile, the problems of soil acidification and the like are effectively relieved, on-demand irrigation and fertilization are achieved, waste of water resources can be reduced, and meanwhile excessive use of chemical fertilizer and the like are avoided.

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.

This invention relates to the fields of microbiology and biotechnology, and discloses Bacillus coagulans PPX-13 and its applications. Strain PPX-13 is a thermotolerant, multifunctional phosphate-solubilizing biocontrol bacterium that can reduce rhizosphere soil acidification in tea trees, improve fertility, enhance the microbial ecological environment, improve the functional microbial community and structure, inhibit mold communities and structure, and increase the yield of spring tea. It has been identified as Bacillus coagulans. This bacterium exhibits mesophilic and thermotolerant phosphate-solubilizing activity; phytase activity; multiple enzyme activities; and mesophilic antagonistic activity against isolates of anthracnose fungal pathogens. This strain holds promise for development into a novel agricultural microbial agent, which is of great significance for mitigating soil acidification, reducing fertilizer use, activating soil nutrients, improving soil quality, and increasing plant (especially tea) yield and quality.

The invention relates to the technical field of fruit and vegetable cultivation, and provides a water chestnut fertilization influence analysis method based on principal component analysis, which comprises the following steps: setting a plurality of field trials for different nitrogen, phosphorus and potassium fertilization level treatment; measuring plant growth indexes, yield indexes, corm quality indexes and soil physicochemical property indexes of the treated water chestnuts; performing principal component analysis on the measured multiple indexes, and extracting principal components of which the characteristic values are greater than 1; calculating comprehensive scores of the processing according to the scores of the principal components and sorting the comprehensive scores; according to the comprehensive score, evaluating the comprehensive influence of different fertilization treatments on the growth, yield, quality and soil properties of the water chestnuts, and screening out an optimal fertilization combination. According to the method, the matching of medium-low nitrogen and phosphorus and medium-high potassium is clear, so that high yield and high quality are guaranteed, soil acidification can be effectively relieved, excessive consumption of nutrients is avoided, synergism of fertilizer saving, efficiency improvement, soil health and quality improvement is realized, and data support and quantitative decision basis are provided for scientific fertilization of the water chestnuts.

The invention discloses a method for accelerating weathering and ecological restoration of sulphide ores on an acid side slope of a highway. The method comprises the following steps: vertically drilling a dosing hole in the surface of the acid side slope of the highway; a persulfate solid or solution is injected into the dosing hole, persulfate is activated by sulphide ore and transition metal contained in slope soil, and sulphide ore weathering and acid production are accelerated; after the side slope sulphide ore is completely weathered to produce acid, clear water is continuously injected into the dosing hole, and acid leachate containing heavy metal is discharged; and plants are planted in the medicine adding holes. According to the method, persulfate reacts with transition-state metal minerals contained in the side slope, sulfide ores exposed on the surface of the acid side slope of the expressway are rapidly weathered, the acidity and alkalinity of side slope soil are balanced to be nearly neutral, and then the problem that side slope green plants cannot grow due to soil acidification is solved; and the method has a good application prospect in road slope soil remediation and rapid greening layers.

The application discloses a kind of cultivation methods for relieving the continuous cropping obstacles of cassava for food, belong to the technical field of crop cultivation.The method of the application comprises the following technical steps: (1) site selection and soil preparation; (2) selection of seedling; (3) seedling treatment; (4) cassava planting; (5) fertilizer management; (6) field management.The application can effectively improve the soil problems such as soil acidification, soil nutrient and microbial community imbalance caused by long-term continuous cropping of cassava for food by using relief matrix and soil conditioner for soil preparation, then using soaking agent to treat seedling to improve the stress resistance of plant, and planting different cassava varieties according to the mixed planting mode of equal row spacing, and through reasonable collocation of biological organic fertilizer, nitrogen, phosphorus and potassium and trace elements and suitable base application ratio for fertilization management, the influence of cassava continuous cropping obstacles can be effectively reduced, the yield and quality of cassava for food can be greatly improved, and the purpose of relieving the continuous cropping obstacles of cassava for food is achieved.

The utility model relates to the technical field of soil treatment, and provides a device for treating soil acidification by utilizing multiple substances, which comprises a cart and a hopper fixedly arranged at the top of the cart, and a material falling opening is formed in the cart; the connecting pipe is fixedly mounted at the bottom of the hopper; the discharging shell is fixedly mounted at the bottom of the connecting pipe; the first motor is fixedly mounted on one end face of the discharging shell, and the output end of the first motor movably penetrates through the discharging shell. The electric push rod drives the circular block to move rightwards, the circular block slides in cooperation with the discharging impeller through the receding groove and shields the material receiving space on the discharging impeller, and therefore the bearing volume of the material receiving space can be reduced, and on the contrary, the electric push rod drives the circular block to move leftwards, and the volume of the material receiving space of the discharging impeller can be increased. Therefore, the effect of conveniently adjusting the discharge amount of the calcite powder according to the soil acidification degree is achieved, and the soil treatment effect and flexibility are effectively improved.

The invention relates to a dynamic regulation and control system and method for soil acidification, and the system comprises a data collection unit which is used for collecting multi-source soil data; the database unit is used for storing the multi-source soil data from the data acquisition unit, and the data in the database unit is called by the decision-making unit; the user input unit is used for inputting planting data of a field, longitude and latitude data of the field and a soil acidity adjusting request by a farmer; and the decision-making unit is used for calling data, at least including the real-time pH value of the soil, of the target longitude and latitude area from the database unit in combination with a soil acidity adjustment request of a farmer, and when it is judged that the acidity of the soil of the target longitude and latitude area actually needs to be adjusted, the use amount of the acid adjusting agent of the soil of the target longitude and latitude area and the application period of the acid adjusting agent are calculated. According to the scheme, the soil data source is comprehensive, accurate sudden acidity adjustment can be achieved, and a low-threshold intelligent decision service is provided for scattered small and medium-sized farmers.

The invention discloses a method for adjusting the putting amount of a soil acidification conditioner, and belongs to the technical field of facility agriculture, and the method comprises the following steps: obtaining a strong acidification layer and a transition layer; obtaining the initial putting amount of the soil acidification conditioner and putting the soil acidification conditioner; the adjusted putting amount of the soil acidification conditioner put into the strongly acidified layer is adjusted in real time; after a soil conditioning period, turning over the conditioned strong acidification layer and the conditioned transition layer; obtaining the standard soil acidification conditioner feeding amount of the next conditioning period; obtaining a strong acidification layer and a transition layer of the next conditioning period; obtaining the acidic material concentration of the transition layer in the next conditioning period; and adjusting the feeding amount of the soil conditioner of the strongly acidified layer in the next conditioning period in real time, so that the acidic substance concentration of the strongly acidified layer in the next conditioning period is the same as that of the transition layer. The problem that in the prior art, the feeding amount of the soil acidification conditioner is reasonable and poor in precision is solved, and therefore the conditioning effect and efficiency of the acidified soil are improved.

The invention discloses a boron-magnesium-rich biological ceramsite soil continuous cropping obstacle repairing agent and a preparation method and application thereof, and the boron-magnesium-rich biological ceramsite soil continuous cropping obstacle repairing agent is prepared from the following raw materials: 30-55% of fly ash, 10-30% of furnace slag, 5-15% of peat, 0.5-0.8% of boron-magnesium powder, 1-5% of magnesite powder and 20-50% of clay. The biological ceramsite rich in boron and magnesium can effectively improve solanaceous fruit continuous cropping obstacles, promote solanaceous fruit growth and improve solanaceous fruit yield. The biological ceramsite rich in boron and magnesium is alkaline and can neutralize soil acidification caused by facility crop continuous cropping when applied to soil; the lightweight and porous structure can improve soil hardening, and can also adsorb redundant salt and autotoxic harmful substances in soil; in addition, a good habitat can be provided for soil microorganisms, growth of beneficial microorganisms is promoted, and soil-borne diseases such as root rot, bacterial wilt, fusarium wilt, verticillium wilt and epidemic diseases caused by continuous cropping of solanaceous crops can be effectively inhibited.

The present application relates to the technical field of agricultural fertilizer, in particular to an acid soil conditioner and a preparation method thereof. In order to solve the problem of soil acidification, the present application prepares an acid soil conditioner for improving acid soil. In order to avoid the problem that traditional acid soil conditioners such as quicklime and slaked lime are not conducive to controlling pH value and are lost too quickly, the acid soil conditioner prepared by the present application is modified by adopting a multiple mode of layered double hydroxide intercalation + acid-responsive gel plugging + microbial loading, thereby giving it the function of pH value response release, effectively avoiding the problem of soil alkalization caused by excessive addition of soil conditioner.

This invention discloses a method for improving soil in potato cultivation, belonging to the field of agricultural soil remediation technology. Addressing the problems of soil acidification, compaction, reduced beneficial microorganisms, and severe soil-borne diseases caused by continuous potato cropping, this invention provides a synergistic improvement method integrating soil pretreatment, coupled application of microbial agents and organic fertilizers as basal fertilizers, dynamic and precise regulation throughout the growth cycle, coordinated water and fertilizer management, and post-harvest remediation. This method involves basal application of a specific ratio of compound microbial agents coupled with organic fertilizers. Based on the physiological needs and disease occurrence patterns of potatoes at different growth stages, and combined with the dynamic and precise regulation of the timing and dosage of microbial agent application through a drip irrigation system, water and fertilizer supply are simultaneously optimized, achieving synergistic effects of biological antagonism, soil ecological restoration, and crop nutrient regulation. This invention effectively improves the soil micro-ecological environment, reduces the incidence of soil-borne diseases, reduces reliance on chemical fertilizers and pesticides, and improves potato yield and quality.

The invention discloses a fertilizing device and a fertilizing method capable of improving soil acidification in the field of agricultural equipment, and the fertilizing device comprises a rack, a driving assembly, a surface layer soil turning assembly, a deep layer soil taking assembly, a uniform mixing assembly and a material adding assembly. Firstly, the surface layer soil turning assembly is driven to turn over surface layer soil and push the surface layer soil to the two sides, after turning over, the deep layer soil is taken out through the deep layer soil taking assembly and conveyed into the uniform mixing assembly, and backfilling is conducted after the deep layer soil is fully mixed with an alkaline material added by the material adding assembly in the uniform mixing assembly; when the machine frame passes through, the tail plate is used for covering the top of the machine frame with the surface soil turned over on the two sides again, the original structure of the land can be kept, meanwhile, the deep soil is taken out and fully mixed with the alkaline material, the improvement effect can be guaranteed, the precious surface soil can not be damaged, and the original land structure can be kept.

The utility model relates to agricultural field especially soil acidification conditioning liquid fertilizer's blending device. The utility model provides soil acidification conditioning liquid fertilizer's blending device that can conveniently discharge redundant raw materials, need not manual control the amount of raw materials, convenient to use. Soil acidification conditioning liquid fertilizer's blending device, including base and stirring bin etc. The left side of base is connected with stirring bin. The utility model discloses through starting servo motor, drives the baffle rotation to open, makes the raw materials of weighing bin inner part through the discharge pipe and falls to the discharge bin, then the baffle rotates to close, starts electric push rod again, drives the discharge pipe to bend up and changes, makes the raw materials in the discharge pipe fall back to the weighing bin, reaches can conveniently discharge redundant raw materials, need not manual control the amount of raw materials, convenient to use effect.

The application discloses a method for treating rare earth tailing area by exogenous nutrients and Yugu, which comprises the following steps: firstly, applying base fertilizer to the soil of the rare earth tailing area to be treated; 7 days later, directly sowing Yugu seeds in the soil; when the plants grow to the tillering stage, applying the first topdressing; 3 days after mowing, applying the second topdressing; the base fertilizer, the first topdressing and the second topdressing adopt biogas residue or biogas slurry; the biogas slurry is directly applied or applied after pretreatment; the pretreatment method of the biogas slurry comprises the following steps: adding montmorillonite powder into the biogas slurry and stirring uniformly, standing, then adding saccharide compounds and stirring uniformly. The application of specific amount of exogenous nutrients biogas slurry and biogas residue, the control of suitable physicochemical properties and the pretreatment of the biogas slurry can all obviously promote the growth of Yugu, relieve soil acidification, improve soil nutrients and nutrient transmission capacity, reduce the heavy metal level of the rare earth tailing area soil, and the treatment effect of the tailing area is obvious.

The application relates to the technical field of land improvement, in particular to a seaweed acid type multifunctional long-acting soil conditioner as well as a preparation method and application thereof. The soil conditioner comprises a core particle layer and a slow-release layer coated on the surface of the core particle layer. The core particle layer comprises organic materials, nano silicon, calcium magnesium polyphosphate, magnesium hydride, ammonium borate, rhamnose and a binder. The slow-release layer comprises clay minerals and seaweed acid salt. The mass ratio of the clay minerals, the seaweed acid salt, the organic materials, the calcium magnesium polyphosphate, the nano silicon, the magnesium hydride, the ammonium borate, the rhamnose and the binder is controlled within a certain range. The soil conditioner provided by the application has good slow-release performance, can slowly and durably release effective components, has multiple functions such as improving soil quality, providing nutrition, promoting crop growth and improving resistance, and the components can synergistically act to effectively solve the problems of soil acidification, heavy metal pollution, micro-plastic pollution, pesticide pollution and antibiotic pollution in agricultural production.

This invention relates to the field of citrus cultivation technology, and discloses a method and application for enhancing the medicinal efficacy of dried tangerine peel in citrus cultivation, including the following processing steps: 1) adding a soil conditioner to adjust the soil pH value, and after the soil acidification adjustment is completed, adding green manure; 2) using a foliar inhibitor to block harmful substances in the soil; 3) applying a functional foliar fertilizer, wherein the functional foliar fertilizer is prepared by adding selenium, sodium, sulfur, chlorine and malt powder to the foliar inhibitor, and the content of selenium after addition is: 0.8-1.5 mg / kg, sodium content is: 0.5-1.0 g / L, sulfur content is: 0.5-1.0 g / L, chlorine content is: 0.5-1.0 g / L, silicon content is: 80-120 g / L, and malt powder content is 5-10 g / L. This invention focuses on three main aspects: soil problems, fruit tree growth, and the medicinal effects of dried tangerine peel. It has developed and applied spraying techniques to improve the fruit yield and increase the fruit tree’s fruit production rate. It has also enriched the fruit trees with selenium and enhanced the medicinal effects of dried tangerine peel, with the content of ferulic acid increasing by 77%.

This invention relates to the field of organic fertilizer technology, and more particularly to an organic fertilizer that promotes plant growth and soil improvement, and its preparation method. Addressing the problems of long fermentation cycles, unstable nutrient release, and soil acidification caused by traditional organic fertilizers, this invention utilizes a Schisandra chinensis stem polyphenol-sepiolite complex as a core additive. The process includes the following steps: extracting and concentrating Schisandra chinensis stem polyphenols using an ethanol solution; activating sepiolite with HCl solution to enhance its adsorption capacity; compounding the polyphenols with the activated sepiolite to form a stable complex; mixing the complex with basic organic materials such as well-rotted cow manure, soybean meal, humic acid, and a compound microbial agent, adjusting the moisture content, and then performing aerobic fermentation; finally, granulating and drying to obtain the organic fertilizer product. This invention can significantly improve plant growth indicators and soil fertility, realize the utilization of waste resources, and is low-cost and environmentally friendly.

The application relates to the field of agricultural technology and discloses an acidified tobacco field soil ecological restoration method, which comprises the following steps: firing tobacco residues and rice husks into wood ash, and applying the wood ash and a solid microbial agent to acidified tobacco field soil; planting leguminous plants and onions in the acidified soil; during the growth stage of the leguminous plants, picking the fruiting parts of the leguminous plants to obtain leguminous plant fruits and leguminous plant residues; turning the onions and the leguminous plant residues into green manure and pressing them into the acidified soil; processing the leguminous plant fruits into organic fertilizer, applying the organic fertilizer to the acidified soil, and completing the restoration of the acidification of the soil; the soil acidification restoration method provided by the application combines different measures to form a multi-level restoration strategy, improves the physical, chemical and biological properties of the soil from different angles, and effectively completes the restoration of the soil acidification.

The application discloses a composite material for simultaneously improving soil acidification and pesticide residue, wherein nano calcium hydroxide is loaded on active carbon as a carrier, and the mass ratio of the active carbon to the nano calcium hydroxide is 1: (0.9-1.5). The composite material is prepared by adding active carbon and sodium hydroxide solution into a calcium chloride solution in sequence under a nitrogen atmosphere, washing and drying the precipitate after the reaction, and the application of the composite material in simultaneously changing the pH value of acidic soil and adsorbing diuron and 3,4-dichloroaniline in the acidic soil. The composite material of the application loads nano calcium hydroxide on active carbon, and by limiting the mass ratio of the active carbon to nano calcium carbonate, the pH value of acidic soil can be effectively improved, and diuron and 3,4-dichloroaniline in the soil can be simultaneously adsorbed, so that the application is simple, and the problems of soil acidification and pesticide residue, two soil pollution problems, are solved.

This invention belongs to the field of resource scheduling and management technology, and relates to a method and system for intelligent scheduling and optimization of soil acidification remediation resources based on big data. The method includes: receiving remediation business requests to generate a demand matrix; constructing a resource topology map based on real-time supply data; extracting cancellation constraint data to generate a cancellation rate index reflecting feedback delay; determining the start time of the remediation task based on this index and applying timestamp compensation to determine scheduling priority; generating a scheduling instruction sequence, and transforming the demand matrix into a multi-band smooth logistics plan. This invention achieves precise matching between resource delivery frequency and environmental absorption capacity by coupling environmental absorption characteristics with logistics timing, effectively alleviating trunk logistics pressure and improving the efficiency of resource allocation for cross-regional ecological remediation tasks.

This invention belongs to the field of agricultural technology, specifically relating to a novel nitrogen fertilizer based on allantoin and its application in wheat cultivation. This invention discovers that using allantoin as the sole nitrogen fertilizer has effects on plant height, tillering, and total above-ground dry weight comparable to applying the same or higher amounts of urea, indicating that allantoin can replace urea as a nitrogen fertilizer, providing the nitrogen nutrition required for wheat growth in the long term. Furthermore, this invention finds that allantoin can also be applied in combination with urea to increase wheat yield while reducing urea usage. Using allantoin as a nitrogen fertilizer for wheat effectively alleviates various problems caused by urea, such as increased soil acidification, compaction, and reduced soil fertility.

The application discloses a kind of farmland repair safe utilization methods, including farmland repair and farmland safe utilization, specifically are as follows: (1) soil acidification conditioning: the contaminated farmland is ploughed, according to 800-1400kg / mu is applied organic fertilizer, then in the soil in agricultural product sowing before acidification conditioning agent is scattered, scattering amount is 1000-2000kg / hm 2 ; (2) micro-fertilizer regulation: during the growth period of agricultural products, microelement fertilizer is applied; (3) water regulation technology: during the key period of agricultural product growth, water regulation measures are adopted to maintain appropriate moisture in the soil; the acidification conditioning agent comprises 15-25 parts of humic acid, 4-10 parts of montmorillonite and 30-50 parts of modified coral sand. The application effectively realizes the effective repair and safe use of the contaminated farmland through the improvement of soil acidification conditioning and micro-fertilizer regulation.

The invention discloses a soil conditioner based on agricultural wastes and a preparation method thereof, and relates to the field of agriculture, and the agricultural wastes comprise rice straws, corn straws and egg shells. The preparation method comprises the following steps: mixing rice straws or corn straws with egg shells according to a certain proportion, and then carrying out pyrolysis under a certain condition. The invention further provides potential analysis of the soil conditioner prepared according to the method for improving the soil acid-base value, improving the soil environment and passivating heavy metal. The soil conditioner prepared based on the agricultural waste provided by the invention accords with a green cyclic agriculture thought, does not need to introduce additional chemical reagents, does not cause additional environmental pollution pressure, can have the functions of effectively relieving soil acidification, improving the soil environment and passivating heavy metals in soil, and has a good application prospect. Therefore, the heavy metal pollution can be reduced while the crop growth is promoted.

The invention relates to the technical field of soil improvement, discloses a composite conditioner for acidified soil improvement and a directional improvement method thereof, and aims to solve the problem of how to desorb and activate ineffective phosphorus fixed by iron and aluminum oxides in soil while rapidly neutralizing active acid in soil and passivating aluminum and manganese toxic ions so as to improve the soil quality. The composite conditioner is prepared from an alkaline salt-based component, a phosphorus activation component, an organic carrier component and composite microbial powder through raw material pretreatment, mixing, granulation, microbial agent loading and low-temperature drying, the dosage is directionally regulated and controlled according to the soil acidification degree during application, water is replenished for maintenance after deep ploughing and uniform mixing, and the soil conditioner is prepared. The fertilizer can quickly and stably adjust the pH value of soil, passivate aluminum and manganese poison, desorb and activate fixed-state phosphorus and avoid reimmobilization, activate soil microbial communities, improve soil aggregate structures, increase the content of organic matters, promote crop growth and nutrient absorption, and realize synergistic interaction of acid adjustment, detoxification, phosphorus release, fertilization and structure improvement.

The invention discloses a digital management and evaluation system for soil acidification treatment of a honey pomelo garden, and particularly relates to the technical field of digital management of orchard soil treatment, which comprises the following steps: collecting soil pH value, exchangeable acid amount, soil layer identification, sampling time, application and modification record, irrigation and drainage record and rainfall record of each sampling position, and outputting original treatment data; receiving original governance data, executing position binding, horizon binding, time sorting and historical storage, and outputting continuous governance data; receiving continuous treatment data, correspondingly combining detection records and application and modification records of the same tree disk position, the same soil layer and the same treatment round, generating digital twin bits in one-to-one mapping with actual treatment positions, and outputting a digital twin bit set; a governance position is mapped into a digital twinborn bit, and interlayer continuity, modification range consistency, boundary external interference elimination and subsequent round persistence review are sequentially performed on detected good changes, so that true improvement and staged appearance improvement are distinguished.

This invention relates to the field of soil remediation fertilizer technology, and particularly to a slow-release fertilizer for increasing yield in cadmium-contaminated farmland that regulates soil acidification, and its preparation method. The slow-release fertilizer for increasing yield in cadmium-contaminated farmland comprises a core layer and a coating layer covering the core layer. The core layer comprises the following raw materials by weight percentage: 30%–50% rice straw biochar, 35%–55% urea, 3%–8% binder, and 2%–8% cadmium passivating agent. The coating layer comprises the following raw materials by weight percentage: 5%–15% polyvinyl alcohol, 60%–80% rice straw biochar, 2%–5% polyethylene glycol, and 3%–10% bentonite. The slow-release fertilizer prepared by this invention can simultaneously address multiple problems such as soil acidification, Cd pollution, nutrient waste, and crop yield reduction. Through a "core-shell" structure, it achieves slow nitrogen release, acid-base gradient regulation, and cadmium stabilization simultaneously, providing technical support for the remediation and safe production of cadmium-contaminated acidic farmland.