123 results about "Soil acidification" patented technology

The invention relates to the technical field of land improvement, in particular to an alginic acid type multifunctional long-acting soil conditioner and a preparation method and application of the alginic acid type multifunctional long-acting soil conditioner. The core particle layer comprises an organic material, nano silicon, calcium magnesium polyphosphate, magnesium hydride, ammonium borate, rhamnose and an adhesive, and the slow release layer comprises clay minerals and alginate; the mass ratio of the clay mineral to the alginate to the organic material to the calcium magnesium polyphosphate to the nano silicon to the magnesium hydride to the ammonium borate to the rhamnose to the binder is controlled within a certain range. The soil conditioner provided by the invention is good in slow release performance, can release effective components durably and slowly, and has multiple effects of improving soil quality, providing nutrition, promoting crop growth, improving resistance and the like; the problems of soil acidification, heavy metal pollution, micro-plastic pollution, pesticide pollution, antibiotic pollution and the like in agricultural production can be effectively solved.

The invention discloses a tobacco field soil acidification early warning treatment system based on Internet of Things, and relates to the technical field of intelligent agriculture Internet of Things, and the system comprises an Internet of Things sensor network which is deployed in a tobacco field area and is used for collecting soil pH value, temperature, humidity and calcium and magnesium ion concentration data in real time. According to the tobacco field soil acidification early warning treatment system based on the Internet of Things, the tobacco growth stage sensitivity coefficient, the regional acidification historical trend and real-time monitoring data are dynamically fused, a self-adaptive early warning threshold value is generated through a nonlinear product algorithm, and the problem of early warning lag or false alarm caused by a fixed threshold value is solved; according to the method, a dual verification mechanism of trend deviation test and virtual governance simulation is combined, abnormal fluctuation interference is screened out through a rigid rule, strategy feasibility is pre-judged, it is ensured that a governance scheme has both accuracy and robustness, and the problems that governance resources are mismatched and the effect is substandard are solved.

The invention discloses a farmland soil acidification space-time sequence data construction and trend diagnosis method, and relates to the technical field of soil science, the method comprises the following steps: collecting space and time observation data of a soil pH value, and carrying out data cleaning and space-time grid construction; calculating a space-time empirical variation function according to the collected data, and quantifying a space-time law of soil acidification; a spatial-temporal variation function is constructed through a separable model and a measurement model, and parameters are optimized to realize high-precision fitting; constructing a uniform space-time grid, and predicting spatial distribution and time change of soil acidification based on a space-time Kriging interpolation technology; according to the method, the significance and sustainability of soil acidification are identified by utilizing trend analysis and Hurst indexes, and the method can efficiently and accurately evaluate the spatial and temporal change of soil acidification and provide a scientific basis for agricultural management.

The invention discloses a soil acidification improvement method, and relates to the technical field of soil improvement, according to the soil acidification improvement method, evaluation of soil attributes is completed through multi-level diagnosis and calculation of the acidification coefficient, the physical obstacle coefficient and the buffer capacity coefficient of soil, and comprehensiveness of soil acidification analysis is ensured. The problem of limitation existing in the current soil acidification analysis process is solved, meanwhile, a threshold value is used for driving decision control flow branches, an improvement scheme is flexibly upgraded based on real-time monitoring data, the soil improvement effect is improved, closed-loop learning double feedback and S6, data are fed back to S1, self-optimization of the system is achieved, the system adapts to soil changes, and the soil acidification analysis efficiency is improved. An abnormal state after improvement is warned in time, so that the soil safety is guaranteed; the method is suitable for the fields of land restoration and the like, the soil improvement efficiency is improved through data-driven intelligent decision, resource waste is reduced, soil acidification is improved and upgraded, and a technical engine is provided for agricultural sustainable development and cultivated land protection.

The present invention discloses a method for constructing a prediction model for non-grain soil acidification, comprising the following steps: S1, collecting soil sample data of various types of non-grain land in different regions; S2, preprocessing the collected soil sample data; S3, feature selection and extraction; S4, constructing a model using a machine learning algorithm; S5, model training and optimization; S6, evaluating the trained model using a test set. The model construction method of the present invention can comprehensively consider the influence of various factors on "non-grain" soil acidification, and the prediction result is more accurate and reliable compared with the traditional single factor model or simple empirical model. The present invention can effectively mine the complex relationship in the data through the automatic learning and feature selection of the machine learning algorithm, adapt to the soil acidification prediction needs of different regions and different types of "non-grain" land, and has strong versatility and adaptability.

The invention relates to the technical field of soil data processing, in particular to a soil acidification intelligent early warning system and method based on big data, and the system comprises a dynamic feature mapping module, a potential feature capturing module, an anomaly detection module, an acidification risk assessment module and a hot spot region recognition module. According to the method, through dynamic correlation analysis of multi-dimensional data, time-space mapping is carried out on soil acidity and alkalinity, temperature and humidity, fertilizer types, application amounts and other data, time indexes, space coordinates and dynamic characteristics are extracted, abnormal points of acidity and alkalinity changes are identified based on dynamic characteristic parameters, and acidification abnormal areas and risk distribution are positioned in combination with spatial density analysis. By extracting the pH value range, the dynamic change rate and the time distribution frequency, the acidification risk trend and hot spot area distribution are obtained, the comprehensiveness and prediction accuracy of data are improved through multi-dimensional dynamic processing and accurate risk assessment, and monitoring, recognition and trend early warning of soil acidification are effectively achieved.

The invention belongs to the technical field of fertilizers, and particularly relates to an alkaline biochar coated slow release fertilizer and a preparation method and application thereof, the preparation method comprises the following steps: S1, preparing modified biochar: modifying traditional Chinese medicine residues with calcium chloride, drying, and putting into a vacuum tube furnace to prepare the alkaline biochar; s2, preparation of fertilizer glue beads: dissolving a fertilizer in a sodium alginate solution, standing and defoaming, dropwise adding the mixed solution into a calcium chloride solution, and cross-linking to obtain the fertilizer glue beads; s3, coating and granulating: uniformly coating the modified biochar and fertilizer mixture on fertilizer glue beads by using a binder to obtain the fertilizer. The alkaline biochar coated slow-release fertilizer disclosed by the invention is high in utilization rate and lasting in fertilizer efficiency, and can relieve soil acidification, reduce cadmium pollution, reduce fertilization cost and environmental pollution caused by the fertilizer, effectively promote crop growth and improve crop yield and quality.

The invention relates to the technical field of agricultural planting, in particular to a Northeast black soil acidification improvement method, which realizes efficient and lasting soil remediation through the synergistic effect of humic acid-calcium complex targeted application, microbial agent activation and green manure planting. According to the technical scheme, the method comprises the steps that soil is partitioned, a first acidification area and a second acidification area are divided according to pH values, humic acid-calcium complexes are applied in a differentiated mode, and pH responsiveness is used for releasing # imgabs 0 # for neutralizing # imgabs 1 # and passivating # imgabs 2 #. The fungus fungicide is applied in furrows, and # imgabs3 is transported to a root system through a hypha network, so that the calcium utilization rate is increased. Soybeans are sown, citric acid is sprayed, mineral calcium is activated through root exudates, and organic matter input is increased. The humic acid-calcium complex is preferentially precipitated in the acidification area. Hypha-root systems cooperatively construct an anti-acidification micro-ecology, so that the yield of crops is increased. The method is suitable for rapid restoration and sustainable management of the severely acidified soil in the northeast black soil area.

The invention provides an acidified soil conditioner, a preparation method thereof and an acidified soil improvement method, and relates to the technical field of soil improvement. Comprising the following steps: preparing a steel slag-ardealite compound from steel slag and ardealite; mgO charcoal is prepared from crop straw; carrying out inoculated culture on alkali-resistant nitrogen-fixing bacteria and phosphate solubilizing bacteria to obtain a mixed bacteria solution, and then preparing the microbial microcapsules; uniformly mixing 45-55 parts of a steel slag-ardealite compound, 10-20 parts of humic acid and 2-4 parts of carboxymethylcellulose, and granulating to obtain inner core particles; preparing suspension liquid from 15-25 parts of MgO and biochar, and spraying the suspension liquid outside the inner core particles to prepare coated particles; and 4-6 parts of microbial microcapsules are uniformly attached to the surfaces of the coated particles to obtain the soil acidification modifier. Solid waste and functional materials are compounded, so that solid waste recycling and long-acting release of alkaline substances can be realized; core-shell slow release and multi-stage regulation are realized through inner core granulation and outer core coating; and the problem of normal-temperature preservation of the bacterium-containing modifier can be solved.

The invention relates to the technical field of soil conditioners, in particular to a soil conditioner for soil acidification treatment as well as a preparation method and application of the soil conditioner. Comprising the following components in parts by weight: 20-35 parts of red mud, 10-15 parts of a humic acid-sodium alginate compound, 10-15 parts of zeolite, 5-8 parts of a silicon-calcium-magnesium fertilizer, 4-8 parts of an acid-proof bacterial agent and 10-15 parts of a bio-based adhesive. The acidified soil treatment effect can be better, and the effect is more durable.

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 provides a method for inhibiting soil acidification and application of protozoa to preparation of biological fertilizer.The method comprises the step that the biological fertilizer containing the protozoa is inoculated into soil, and the protozoa comprises at least one of kidney-shaped worms and ochramydae. By the adoption of the technical scheme, the purpose of rapidly inhibiting soil acidification is achieved, the increase of the organic carbon content of soil can be remarkably promoted, meanwhile, different types of protozoa have different degrees of effects on key nutrient elements such as solid storage nitrogen and phosphorus, and a soil nutrient supply structure is optimized. In the aspect of improving the physical structure of the soil, the life activity of the protozoa can effectively promote the generation of soil aggregates, and the healthy soil structure is remodeled by improving the porosity and air permeability of the soil. In addition, the protozoa can also form a complex interaction network with microorganisms such as bacteria and fungi in soil, so that a microbial metabolic pathway is activated, and the microbial activity is remarkably improved.

The invention discloses a cultivation method for improving acidic soil of a greenhouse vegetable base based on rotation of morchella esculenta, and belongs to the technical field of soil improvement. The method comprises the following steps: (1) selecting an acidification test plot of long-term continuous cropping vegetables, and detecting soil pH, conductivity, water-soluble salt and anion and cation concentration; (2) preparing a morchella sextelata strain and culturing the morchella sextelata strain until the inoculation bag is full of hyphae; (3) spreading strains on the surface of soil, and managing fruiting after earthing; and (4) after harvesting morchella esculenta, detecting soil indexes, and evaluating the acidification improvement effect. According to the method, the soil pH value is remarkably increased through rotation of the morchella esculenta, the conductivity and the water-soluble salt content are reduced, the anion-cation balance is adjusted, the soil acidification problem caused by long-term continuous cropping of a greenhouse vegetable base is relieved, and meanwhile the land utilization economic value is increased.

The invention discloses a preparation method and application of an alkaline carbon-based bio-organic fertilizer for southern acidified dry land, and the alkaline carbon-based bio-organic fertilizer is prepared from the following raw materials in parts by weight: 30-60 parts of an alkaline organic fertilizer, 5-20 parts of dolomite, 10-30 parts of a chemical fertilizer and 10-30 parts of a compound microbial agent. The alkaline carbon-based bio-organic fertilizer contains high-water-solubility organic carbon with higher content, is high in dispersity and is more suitable for improving dry land soil with lower moisture content; charcoal and attapulgite in the microbial agent can improve the soil structure, increase the water and fertilizer retention capacity of the soil and improve the fertilizer efficiency; the alkaline organic fertilizer, the biochar and the dolomite can effectively improve the soil pH, and the dolomite can be used as a soil pH stabilizer to prevent soil acidification.

The present invention relates to an acidic soil conditioner and a preparation method and application thereof. The acidic soil conditioner includes a carbon-based acid conditioner, a mineral source conditioner and a microbial preparation. The preparation method of the acidic soil conditioner includes: calcining and grinding oyster shells to obtain oyster shell powder; mixing oyster shell powder, modified biochar and quicklime to obtain a carbon-based acid conditioner; crushing and sieving at least one of attapulgite, montmorillonite and dolomite to obtain a mineral source conditioner; mixing Bacillus subtilis, Bacillus licheniformis and Trichoderma harzianum in proportion to obtain a microbial preparation; the preparation of the acidic soil conditioner: uniformly mixing the prepared carbon-based acid conditioner, mineral source conditioner and microbial preparation, and then coating to obtain a coated acidic soil conditioner. The present invention also provides an application of an acidic soil conditioner for conditioning, improving and repairing degraded acidic soil. The present invention solves the problems of soil acidification and nutrient deficiency at the same time.

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 utility model provides a soil acidification control experiment soil column, and relates to the technical field of soil acidification detection sampling. The soil acidification control experiment soil column comprises an experiment soil column body, a sampling pipeline is fixedly connected to the interior of the experiment soil column body, the two ends of the sampling pipeline are open, and a movable baffle is hinged to the interior of the sampling pipeline through a pin shaft. According to the device, an experimental soil column is inserted into a potted plant, one end of a sampling pipeline is shielded through a movable baffle and a fixed barrier strip, external soil is prevented from entering the sampling pipeline, and when the potted plant needs to be subjected to acidification detection, a connecting sliding block is driven to slide away from a connecting pull rod; under the connecting action of the connecting pull rod, the movable baffle is pulled to turn over to open one end of the sampling pipeline, so that soil in a potted plant is conveniently sampled through the sampling pipeline, the pH condition of the soil is measured, the vertical change trend of acidification is known, and the soil structure and potted crops are not damaged.

The invention discloses a soil conditioner for an acidified sugarcane field. The soil conditioner is prepared from the following components in parts by weight: 40-70 parts of waste papermaking pulp, 0.03-0.05 part of a fermented complex microbial inoculant, 10-20 parts of mineral clay, 20-30 parts of organic matter fertilizer, 10-20 parts of inorganic fertilizer and 3-5 parts of wood vinegar, the preparation method of the soil conditioner comprises the following steps: adding the fermentation complex microbial inoculant into the organic matter fertilizer, uniformly stirring, stacking in a reaction tank, and turning 2-4 times every day when the placement temperature reaches 60-65 DEG C for 10-20 days; and then adding the waste papermaking pulp, the inorganic fertilizer, the mineral clay and the pyroligneous liquor, and uniformly stirring to obtain the soil conditioner. The method can solve the problem of soil acidification of a sugarcane field, reduce hardening of acidified soil, improve the air permeability of the soil, improve the microbial activity and reduce aluminum and manganese toxicity, thereby improving the yield and quality of sugarcanes.

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 present invention relates to a leaching method for leaching mixed powder of electronic waste using Lactobacillus plantarum, and belongs to the field of resource recovery technology. The leaching method described in the present invention comprises the following steps: preparing mixed powder of electronic waste, configuring culture medium, acclimating bacteria, and leaching. The present invention applies Lactobacillus plantarum to the biological leaching of a mixed material of waste lithium iron phosphate batteries and waste printed circuit boards, thereby achieving the extraction of lithium and iron from waste lithium iron phosphate batteries and the extraction of copper from waste printed circuit boards. Compared with traditional biological leaching of single electronic waste, the present method does not use strong acidophilic bacteria, does not produce strongly acidic wastewater, and does not add additional chemical reagents, which greatly reduces the water and soil acidification problem caused by traditional strong acidophilic bacteria, and can achieve efficient biological leaching of a mixed material of waste lithium iron phosphate batteries and waste printed circuit boards without producing a large amount of strong acid that is harmful to the environment.

The invention discloses a coal gangue soil conditioner and a production method thereof in the field of coal gangue soil conditioners. According to the method, deep development and efficient utilization of the coal gangue are achieved through the steps of fine grinding, leaching, mixing, granulation, calcination and the like, the dolomite powder and the magnesite powder are added into the filtrate, the produced coal gangue soil conditioner has remarkable citric acid solubility, effective components in the conditioner can be effectively absorbed by plant roots, and the soil conditioner has the advantages that the soil conditioner can be used for improving the soil quality of plants. Compared with a traditional soil conditioner, the coal gangue soil conditioner has the advantages that the biological utilization rate is higher, the soil environment can be more directly and effectively improved, the yield of crops is increased, the quality of the crops is improved, the coal gangue soil conditioner further has the characteristic of alkalescence, acidic substances in soil can be neutralized, and the soil conditioner can be used for improving the soil quality of the crops. The pH value of the soil can be adjusted to be neutral or alkalescent, so that the structure and texture of the soil can be improved, the water and fertilizer retention capacity of the soil can be improved, and the problem of crop growth limitation caused by soil acidification can be effectively relieved.

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 present invention relates to a Brevibacillus ( Brevibacillus brevis ) ZLP‑152, with the deposit number CGMCC No. 32228, can continuously produce alkali throughout the growth cycle and antagonize various pathogens such as cotton red rot. The composite bacterial agent formed by it, phosphate-solubilizing bacteria HM0332 and silicate bacteria HM8841 can improve soil acidification and / or soil microecological environment.

The invention provides a method for improving the healthy function of facility vegetable field soil, the soil is improved by a method of ditching in a facility vegetable field planting area, laying a high-carbon isolation functional layer and then earthing and leveling, and the high-carbon isolation functional layer comprises a high-carbon stable layer, a storage and capacity expansion layer and an adsorption and release layer from bottom to top. The high-carbon stable layer is a mixture of a compacted long-acting carbon material and a framework support material, the storage and capacity expansion layer is a mixture of agricultural wastes to which microbial agents are applied and a water retention material, and the adsorption and release layer is a mixture of a porous medium-effect carbon material and a natural mineral controlled-release fertilizer. According to the method, the obstacle problems of acidification, hardening, salinization, accumulation of nitrate and organic pollutants and the like of soil of an existing facility vegetable field can be solved, the micro-ecological environment of the soil is improved, the soil quality is improved, quality improvement, yield increase and healthy and sustainable development of the facility vegetable field are finally achieved, and the method has important significance on development of the facility agriculture industry.

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.

This application relates to the technical field of soil conditioners, and more particularly to a soil conditioner for soil acidification treatment, its preparation method, and its application. The soil conditioner comprises the following components, by weight: 20-35 parts red mud, 10-15 parts humic acid-sodium alginate complex, 10-15 parts zeolite, 5-8 parts silicon-calcium-magnesium fertilizer, 4-8 parts acid-resistant bacteria agent, and 10-15 parts bio-based adhesive. This application can achieve better and longer-lasting effects on acidified soil treatment.