4026results about "Soil-working methods" patented technology

An agricultural vehicle includes cameras and radars operably coupled to the agricultural vehicle, and an imaging controller operably coupled to the radars and the cameras. The imaging controller includes at least one processor, and instructions that cause the processor to receive image data from the cameras, receive radar data from the radars, combine the image data from a first camera with the image data from a second camera having a different field of view than the first camera to generate combined image data, and fuse the combined image data with the radar data to generate fused data. Related agricultural vehicles and methods are also disclosed.

The invention discloses a layered alternate fertilization method suitable for saline-alkali soil improvement. The method comprises the following steps: determining the soil salinization degree and the main salt ion type of target saline-alkali soil; the method comprises the following steps: designing a layered fertilization scheme according to the soil salinization degree, the main salt ion type and the growth demand and salt tolerance of a target crop, and determining the fertilization types, fertilization amounts and fertilization depths of different soil layers; formulating an alternate fertilization strategy, and determining fertilization periods and the sequence and interval time of fertilization of different soil layers in each period; fertilization operation is carried out on the target saline-alkali soil according to a layered fertilization scheme and an alternate fertilization strategy, the dynamic change of soil salinity and the growth condition of target crops are monitored in the fertilization process, and the follow-up fertilization scheme and strategy are adjusted in time according to the monitoring result. Soil conditions are determined, a layered fertilization scheme is designed, an alternate fertilization strategy is formulated, fertilization operation is adjusted according to monitoring results, and the purposes of improving saline-alkali soil and meeting the growth requirements of target crops are achieved.

An adjustment system for guidance lines comprising a GNSS unit disposed on an agricultural vehicle, a memory comprising stored crop row locations, a processor in communication with the GNSS unit and the memory, the processor configured to apply lateral and / or longitudinal adjustments to guidance lines generated based on stored crop row locations from a prior operation, and an automatic steering system configured to command the agricultural vehicle to traverse the guidance lines.

The invention relates to the technical field of ecological soil remediation, and discloses a moso bamboo ecological soil remediation directional regulation and control method and equipment which are used for solving the problems of insufficient light transmittance, low acidified soil remediation efficiency and the like caused by a fixed proportion of a traditional bamboo and broad-leaved mixed forest. A random forest algorithm is combined to dynamically optimize a mixing proportion and associated tree species configuration, an unmanned aerial vehicle is used for scanning to generate a three-dimensional crown model, intelligent equipment is guided to accurately intermediate cutting and complementary planting, and in cooperation with a pH response type shading film and an acid-resistant phosphate solubilizing bacterium agent, crown light transmittance improvement and acidified soil improvement are achieved. The equipment comprises an unmanned aerial vehicle carrying a laser radar, an intelligent transplanting robot and a solar drip irrigation system, and the concentration of a fungicide and an irrigation strategy can be dynamically regulated and controlled. The porous bamboo charcoal carrier is prepared by innovatively utilizing the moso bamboo waste, and the functional flora is loaded to replace the traditional peat raw material; according to the scheme, the problems of static configuration, manual dependence and resource waste are solved.

Precision agriculture methods and systems where drone images of an agricultural field are captured by a UAV and analyzed to generate information regarding the agricultural field. Items of interest are identified in the images, the pixel-space locations of the items of interest are determined, and the world-space locations of the items of interest are then determined using the pixel-space locations. The transformation from pixel-space location to world-space location occurs without transforming the images or processing transformed images.

The invention relates to the technical field of agricultural biology, and discloses an auxiliary cultivation method for promoting sugarcane biological nitrogen fixation, which comprises the following steps: (1) breeding a sugarcane variety with high nitrogen-fixing bacteria affinity, and preparing an environmental stress resistant nitrogen-fixing bacteria agent; (2) carrying out acidification improvement and carbon source pre-burying on the planting soil; (3) inoculating the nitrogen-fixing bacterial agent to the sugarcane seed stem or rhizosphere area; (4) maintaining the metabolic activity of nitrogen-fixing bacteria by dynamically regulating and controlling rhizosphere carbon source supply and oxygen partial pressure; (5) adjusting a fungicide supplementary application strategy in real time based on the environmental data; and (6) solidifying the symbiotic character through intergenerational epigenetic treatment. Through host-microorganism coevolution and intelligent dynamic regulation and control, the nitrogen fixation efficiency and environmental adaptability of the sugarcane-nitrogen-fixing bacteria symbiotic system are remarkably improved; and epigenetic and flora iteration technologies are combined, so that stable transmission of cross-generation characters is realized, and a low-consumption and high-benefit ecological solution is provided for sustainable agriculture.

The invention provides an ecological restoration and rapid vegetation planting method suitable for an open grassland mining area, and provides a novel grass seed assembly structure, and according to regional climate characteristics and geographical general situations, in combination with actual planting conditions of a vegetation restoration area, and according to planting principles of local nature, species diversity, ecological complementation and the like. Based on the main biological ecology characteristics of different plant species and the collaborative succession and growth promotion co-fusion development characteristics of the suitable growth environment, multi-system, multi-dimension and multi-species technical assembly is carried out according to local conditions, and a cost-saving, efficient, function-harmonious and landscaping rapid vegetation recovery technical method is created.

The invention relates to the technical field of saline-alkali soil improvement, in particular to a saline-alkali soil treatment and improvement method which comprises the following steps: S1, early-stage investigation and planning; s2, physical improvement; s3, chemical improvement; s4, biological improvement; s5, irrigation improvement; s6, later monitoring and maintenance; according to the saline-alkali soil treatment and improvement method, a traditional single improvement mode is broken through, physical, chemical, biological and engineering technologies are fused, a systematic improvement scheme is formed, and physical improvement effectively improves the soil structure and accelerates salt discharge through land leveling, deep ploughing, upturned soil sunning and concealed pipe laying for drainage; a soil conditioner and an acidic material are precisely applied for chemical improvement, and the soil acidity and alkalinity and ion composition are adjusted; in biological improvement, salt is absorbed by virtue of salt-tolerant plants and microbial agents, and soil microbial communities are improved; a fresh water resource or salt water desalination technology is reasonably utilized for irrigation improvement, and salt leaching and water resource recycling are achieved; through the synergistic effect of multiple means, the salt content of soil can be more efficiently reduced, and the soil structure is improved.

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 high-beach difficult land mangrove plant restoration method, and relates to the technical field of wetland ecological restoration. Through the design of the concave planting pits and the improvement technology of the compound matrix, the problems of insufficient tide immersion and soil hardening in existing high beach remediation are solved. According to the method, planting pits with specific sizes are dug, 2 / 3 of original soil is removed, and a composite matrix of a coco coir layer, a humus layer and a crushed soil layer is backfilled, so that the concave microhabitat with the surface layer 10-20 cm lower than the native mud flat is formed. The coco coir layer improves the air permeability of the soil, the humus layer provides organic nutrients, and the crushed soil layer enhances the stability of the root system. The concave structure prolongs the residence time of tidal water, promotes benthic organisms such as crabs to move and improves the soil quality. By means of the method, the survival rate of mangrove plants in the kaolin mud flat at the tail of the pond under the xiamen reaches 85% or above, and the forestation problem caused by high-beach soil hardening and insufficient tide flooding is solved.

An agricultural treatment system can include a laser light source, a redirection component, an exit component, and safety component(s). The laser light source can emit a laser beam within the system in a first direction. The redirection component can be a mirror that can receive the laser beam and redirect it in a second direction toward an agricultural target object outside the system. The exit component can transition the laser beam from within to outside the system and toward the agricultural target object. Safety component(s) can facilitate maximizing the strength of the laser beam at or proximate the agricultural target object while also reducing the strength of the laser beam at locations away from the agricultural target object. Safety component(s) can include a converging lens and a diverging lens, which can be adjusted to locate a focal point of the laser beam at or proximate the agricultural target object.

The invention relates to the field of saline-alkali soil remediation, and particularly discloses a saline-alkali soil improvement and remediation method which comprises the following steps: step 1, soil pretreatment: performing deep scarification operation on saline-alkali soil at the depth of 40-60cm, and applying desulfurized gypsum particles with the particle size of less than or equal to 5mm at the dosage of 3-5t / ha; step 2, paving a biochar-based composite material: mixing biochar, humic acid and nano-hydroxyapatite according to a mass ratio of 4: 1: 0.5 to form composite particles with the particle size of less than or equal to 2mm, and burying the composite particles into soil in a layered manner according to the dosage of 8-12t / ha; through physical and chemical regulation and control of the biochar-based composite material, biological metabolism activation of the composite microbial agent and dynamic optimization of intelligent water and salt management, a cascade remediation system of material salt resistance-microbial soil improvement-plant salt absorption is constructed, all technical modules are mutually coupled, the salt reduction efficiency is remarkably improved, and the comprehensive utilization rate of the biochar-based composite material is increased. Meanwhile, the soil nutrient circulation capacity is enhanced, and the problems that a traditional single technology is limited in action range and long in remediation period are solved.

The invention relates to the technical field of organic fertilizers and planting of watermelons and muskmelons, and provides a special fertilizer for milk irrigated watermelons and muskmelons and a double-stubble planting method for sweetness enhancement of milk irrigated watermelons and muskmelons. The special fertilizer for the milk irrigated watermelons and muskmelons comprises black goat manure, sophora alopecuroide, sesame seed meal, bran, organic fresh milk, brown sugar and zymophyte. The black goat manure is pulverized into powder by a pulverizer, the sophora alopecuroide is pulverizedinto 1 cm to 2 cm, and the ratio of the black goat manure, the sophora alopecuroide, the sesame seed meal, the brans, the organic fresh milk, the brown sugar and the zymophyte is 2700-3200: 80: 50: 150: 5: 1. The double-stubble planting method for sweetness enhancement of the milk irrigated watermelons and muskmelons comprises the following steps: selection of a nursery seedling plate and soil, cleaning and germination accelerating of seeds, soil preparation, transplanting, irrigation, topdressing, shaping and forking of watermelon and muskmelon vines and fruit bearing of the watermelons and the muskmelons. The problems that in an existing watermelon and muskmelon planting process, soil nutrients are damaged due to the fact that chemical fertilizers are used for a long time, and the sweetness of melons is reduced are solved.

A drive unit adapted for use in farm equipment includes a first transceiver and a processing module. The processing module is configured to receive first data from the farm equipment, including sensor data and / or controller data, and integrate the received first data with additional second data indicating an agricultural prescription for a geographic region to form agricultural data. The processing module is also configured to apply one or more spatial filter constraints and temporal filter constraints to the agricultural data and then compute, from the filtered agricultural data, a difference between actual execution of one or more parameters of the agricultural prescription and expected execution of the one or more parameters. The processing module is further configured to, when the difference exceeds a predefined stored threshold, autonomously generate and transmit to a remote computing device, a settings alert to thereby trigger generation of an updated agricultural prescription.

The invention discloses a coal gangue abandoned mine ecological restoration water retention technology, and belongs to the technical field of environmental protection. According to the remediation technology, after the surface soil of the mine is loosened, the alkaline waste and the heavy metal adsorbent are firstly added for neutralization and adsorption pretreatment, and then the composite soil conditioner is continuously added to sequentially cover and construct the improved composite layer soil in a gradient manner; the composite soil conditioner comprises fly ash, steel slag, local clay, straw fibers, water-retaining slow-release microcapsules, charcoal, papermaking white mud and humus soil, high-resistance vegetation is transplanted on the obtained improved composite layer soil, meanwhile, a microbial agent is inoculated, and remediation is completed after the soil is maintained to be stable. According to the method, multiple technical processes are integrated and matched and cooperated with one another, the purpose of long-acting water retention is finally achieved through the combined action of multiple remediation mechanisms of materials, vegetation and microorganisms, and compared with a traditional mine remediation technology, the method is better in stability and longer in acting time and has a good application prospect.

The invention discloses an ecological restoration method for a bare rock side slope in a high and cold arid area, and belongs to the technical field of ecological restoration, the ecological restoration method for the bare rock side slope in the high and cold arid area comprises the following steps: (1) side slope pretreatment: firstly, mechanically chiseling a bare rock slope surface to form micro holes; a rhombic iron gauze is laid and anchored; (2) spray-seeding an anti-freezing and thawing base material to ensure that the base material uniformly covers the slope surface; wherein the freeze-thaw resistant base material comprises the following raw materials: weathered gravels, straw fibers, attapulgite clay, an inorganic compound fertilizer, a slow-release water-retaining agent, a cold-resistant microbial agent and mixed anti-freezing grass seeds; (3) covering the surface of the bare rock slope with an ecological blanket; (4) water management. The structural stability is enhanced through mechanical pretreatment, the anti-freezing and drought-resisting capabilities are improved through the composite anti-freezing and thawing base material, vegetation growth is promoted through cooperation of microorganisms and grass seeds, precise maintenance is achieved through an intelligent system, and a systematic solution for ecological restoration of the bare rock slope in the high and cold arid area is formed. The method has remarkable advantages in the aspects of improving the restoration efficiency, guaranteeing the ecological sustainability and the like.

The invention discloses a preparation method of an intelligent response type soil conditioner based on a nano composite material, and belongs to the technical field of soil improvement. The modifier is prepared from 10 to 15 parts of modified chitosan, 15 to 25 parts of nano silicon dioxide, 20 to 30 parts of biochar-loaded polyglutamic acid, 8 to 15 parts of humic acid-sodium alginate microcapsules, 3 to 5 parts of trace element slow-release particles, 1 to 2 parts of a pH response type cross-linking agent and 15 to 25 parts of a functional agent. The soil conditioner researched and developed by the invention can flexibly adapt to complex and changeable soil environments, can sensitively sense dynamic changes of key environmental indexes such as soil humidity, pH value and temperature, automatically and accurately regulates and controls the release rate and the action effect of the soil conditioner, realizes multiple functions such as water retention, acid regulation, fertility increase and pollution resistance in a one-stop manner, and has a wide application prospect. High efficiency, long-term effect and ecological environment friendliness of soil improvement are comprehensively achieved, a new road is opened up for global soil improvement, and agricultural yield increase, ecological restoration and urban green development are assisted.

The invention relates to the technical field of land layout, and discloses a BIM platform-based land reclamation project automatic rapid layout method and system, and the method comprises the steps: obtaining the site topographic data of an excavation region, obtaining an original landform BIM model of a field based on the data, carrying out the screening, enabling the screened original landform BIM model of the field not to comprise a super-slope region, and carrying out the screening of the original landform BIM model of the field; arranging a terrace according to the contour line to obtain a field piece line, performing grouping based on the contour line interval where the height of the point cloud data is located, calculating a field surface design elevation, and establishing a preliminary terrace model on the basis of the original landform BIM model of the field piece based on the field piece line, the gross width of the terrace and the field surface design elevation; and establishing a ridge and ridge model on the basis of the preliminary terrace model according to the field surface clear width, the ridge width and the ridge height. According to the invention, a convenient, rapid and intelligent field distribution scheme is provided for a land leveling construction project in the hilly area, so that fine improvement construction of the terrace type terraced field in the hilly area is realized.

One or more information maps are obtained by an agricultural work machine. The one or more information maps map one or more agricultural characteristic values at different geographic locations of a field. An in-situ sensor on the agricultural work machine senses an agricultural characteristic as the agricultural work machine moves through the field. A predictive map generator generates a predictive map that predicts a predictive agricultural characteristic at different locations in the field based on a relationship between the values in the one or more information maps and the agricultural characteristic sensed by the in-situ sensor. The predictive map can be output and used in automated machine control.

The invention belongs to the technical field of soil improvement, and discloses a preparation method of a manganese slag-coconut shell charcoal-desulfurized gypsum composite soil improvement agent, the soil improvement agent and application. The preparation method of the soil conditioner comprises the working procedures of manganese residue pretreatment, coconut shell pretreatment, precursor preparation, precursor calcination and conditioner compounding, the pretreated coconut shell and the pretreated manganese residue are mixed and then subjected to ball milling, and a manganese residue-coconut shell precursor is obtained; calcining the prepared manganese residue-coconut shell precursor for 1-4 hours at the temperature of 450-650 DEG C in a protective gas atmosphere to obtain manganese residue-coconut shell biochar; and doping desulfurized gypsum powder into the prepared manganese slag-coconut shell charcoal, and uniformly dispersing to obtain the manganese slag-coconut shell charcoal-desulfurized gypsum composite soil conditioner. The method disclosed by the invention has the advantages of low energy consumption, low cost and capability of treating waste with waste, and the prepared soil conditioner has the advantages of improving soil nutrient balance, reducing nutrient loss and stabilizing pH, and is suitable for modifying the acid soil of the rubber plantation in the tropical region.

The invention relates to acid-resistant sulfate reducing bacteria and application thereof, and belongs to the technical field of microorganisms. The acid-resistant sulfate reducing bacterium disclosed by the invention is Desulfovibrio desulfuricans QY411, and is preserved in the Guangdong Microbial Culture Collection Center on March 14, 2024, and the preservation number of the acid-resistant sulfate reducing bacterium is GDMCC No: 64412. The acid-resistant sulfate reducing bacterium provided by the invention can survive in an environment with the pH value of 4, and can be applied to ecological reconstruction of acid tailings and waste dump soil, the pH values of mining wasteland soil and surface water after ecological reconstruction are remarkably increased, the concentration of SO4 < 2-> in the soil is remarkably reduced, the acidification process in the mining wasteland soil is effectively inhibited, and the acid-resistant sulfate reducing bacterium has the advantages of being safe and reliable. Therefore, the acidification process in the mining wasteland is effectively controlled. Meanwhile, soil heavy metal pollution is reduced, and vegetation growth is recovered.

The invention discloses a saline-alkali soil improver and a use method thereof, and belongs to the technical field of soil improvement. The modifier comprises the following components in parts by mass: 60-80 parts of an organic carrier, 10-20 parts of an inorganic calcium material, 5-9 parts of a compound microbial agent, 10-20 parts of a sustained-release material, 5-10 parts of an acidity regulator and 15-23 parts of a plant growth promoter. The preparation method comprises the following steps: crushing the raw materials, embedding the sustained-release microspheres, loading the microbial inoculum, and granulating and drying. Through cooperation of multiple mechanisms such as calcium and sodium replacement, pH reduction by organic acid and aggregate formation promotion by microorganisms, differential application strategies are designed for light, medium and severe saline-alkali soil, salt-tolerant crop planting is matched, the yield of wheat, alfalfa and the like is increased by 18%-30%, the soil organic matter is increased to 2.1%, and the microbial diversity index is increased by 133%. The method has the advantages of long-acting salt control, ecological restoration and cost, and is suitable for treatment of coastal and inland saline-alkali soil.

The invention discloses a pseudomonas synthetic flora and application thereof in prevention and treatment of apple continuous cropping obstacles, and belongs to the technical field of agricultural microorganisms. The synthetic flora is constructed from three strains of pseudomonas, i.e., alkylphenol pseudomonas, oleaginous pseudomonas and pseudomonas putida, and the biological preservation numbers of the three strains of pseudomonas are respectively as follows: alkylphenol pseudomonas S4, CGMCC (China General Microbiological Culture Collection Center) No.36078; the culture medium is characterized in that the culture medium is Pseudomonas oleovorans S38, and the culture medium is CGMCC (China General Microbiological Culture Collection Center) No.36079; pseudomonas putida S42, the preservation number of which is CGMCC (China General Microbiological Culture Collection Center) No.36080, is CGMCC No.36080. The synthetic flora has a relatively strong antagonistic effect on main pathogenic bacteria (fusarium oxysporum and fusarium solani) of apple continuous cropping obstacles, and the inhibition capability of the synthetic flora is remarkably superior to that of a single strain; field and pot experiment results show that the liquid bacterial fertilizer and the solid bacterial fertilizer of the synthetic flora can promote the growth of overground parts and underground parts of the continuous cropping apple trees; the number of harmful fungi in continuous cropping soil is obviously reduced; the root protecting enzyme activity is improved, and the MDA content is reduced; the rhizosphere micro-ecology of the continuous cropping apples is optimized, and the continuous cropping obstacles of the apples are remarkably relieved.

The invention discloses a preparation process of a soil conditioner and application of the soil conditioner in soil improvement, and the preparation process comprises the following steps: S1, preparation of pretreated biomass; s2, preparation of composite biochar; s3, preparation of sulfhydrylated biochar; s4, preparing the modified composite biochar; and S5, uniformly mixing the modified composite charcoal, kaolin, humic acid, fly ash, slaked lime and vermiculite to obtain the soil conditioner. According to the soil conditioner, modified composite biochar prepared through specific functionalization is blended with kaolin, humic acid, fly ash, slaked lime and vermiculite according to a certain proportion, and the prepared soil conditioner has unique advantages in the aspects of improving soil organic matter, fixing carbon, providing microelements and especially regulating and controlling the activity of soil microorganisms; advanced complementation and synergistic interaction of all the components are achieved, and the comprehensive treatment requirement of complex degraded soil can be better met.

The invention provides nutritional moisturizing ceramsite as well as a preparation method, application and an application method.The method comprises the following steps: firstly, uniformly mixing sieved power plant fly ash with commercial cement, solid nutrition powder and coal gangue powder, and adding hydrogen peroxide to obtain porous ceramsite; the preparation method comprises the following steps: adsorbing a nutritional agent by porous ceramsite, wrapping the porous ceramsite with phosphorylated chitosan, carrying out hydroformylation and alkynylation, and reacting with the modified microcapsule to obtain the nutritional moisturizing ceramsite. The invention also provides an application of the nutritional moisturizing ceramsite in desertification soil improvement. According to the application method of the nutritional moisturizing ceramsite in desertification soil improvement, the nutritional moisturizing ceramsite is divided into large, medium and small ceramsite according to the particle size, and directly covers a desertification land to form a nutritional moisturizing ceramsite layer in a big-end-up form, a uniform form, an interlayer form, a mixed form or a uniform mixing form. The nutritional moisturizing ceramsite prepared by the invention can improve soil fertility and promote plant growth.

The invention relates to the technical field of environmental restoration, in particular to a slow-release material for synergistically restoring heavy metal and organic compound contaminated soil based on modified biochar and microorganisms and an application method thereof.The slow-release material is prepared from, by weight, 50-80 parts of modified biochar, 30-40 parts of sodium alginate, 10-20 parts of gelatin, 5-10 parts of glycerin and 3-5 parts of calcium carbonate. The multi-modified biochar is prepared from, by weight, 300-400 parts of a functional flora mixed solution and 5-10 parts of mixed nutrient elements of glucose, yeast extract and KHPO, and through the synergistic effect of the multi-modified biochar and the functional flora, efficient immobilization (the immobilization rate gt is 60%) of heavy metal (lead, cadmium and chromium) and efficient degradation (the degradation rate gt is 70%) of organic pollutants (polycyclic aromatic hydrocarbon and petroleum hydrocarbon) are achieved.

The invention belongs to the technical field of ecological restoration and wetland engineering, and discloses an ecological corridor-based abandoned fishpond ecological restoration method, which comprises the following steps: S1, land forest restoration: planting saline-alkaline tolerant vegetation around an abandoned fishpond and in a land and abandoned fishpond transition area in a layered manner; s2, mangrove forest wetland construction: performing microtopography modification to adjust the bottom mud elevation, and planting mangrove forest plants in a layered manner; s3, ecological corridor construction: constructing an ecological corridor on one side of the abandoned fishpond and the land, and constructing an ecological corridor on one side of the abandoned fishpond and the ocean; s4, ecological monitoring and maintenance: carrying out hydrological, tidal and biological detection regularly; the three-dimensional ecological corridor system of'land forest-mangrove forest wetland-ocean 'is constructed, and the abandoned fish pond is transformed into the mangrove forest wetland, so that not only are biodiversity improvement and ecosystem connectivity realized, but also stable migration and inhabitation space can be provided for terrestrial and aquatic organisms.

The invention relates to the technical field of soil function improvement, in particular to a rice field soil recarburization and capacity expansion method based on a charcoal-based organic fertilizer. The method comprises the following steps: crushing a biomass raw material, pyrolyzing and cooling to obtain biochar; immersing the biochar in a functional bacteria solution containing actinomycetes and bacillus for activating treatment to obtain modified biochar; mixing the modified biochar and decomposed straw, composting and fermenting to obtain organic fertilizers with different particle sizes; the large-particle-size organic fertilizer is applied to deep soil, the soil is covered with soil after straw is laid on the soil, and the small-particle-size organic fertilizer is applied to surface soil. Through layered application, the large-particle-size biochar repairs the deep soil structure and expands the carbon storage capacity, and meanwhile, the carbon stability is improved through carbon-nitrogen synergistic metabolism driven by functional bacteria, so that the carbon immobilization efficiency is improved, meanwhile, soil recarburization and expansion are achieved, the contradiction between carbon sequestration and structure degradation and nutrient imbalance in a traditional recarburization and expansion technology is solved, and the soil recarburization and expansion efficiency is improved. Synergic improvement of a carbon sink function and agricultural productivity is promoted.

A method is provided for determining soil properties for an area of land, from soil spectrum data. In an embodiment, the method includes receiving soil spectrum data records from hyperspectral sensors that represent a mean soil spectrum of a specific geo-location of the area of land and removing interference signals from the spectrum data records to create soil spectral bands. The method also includes predicting a plurality of soil property datasets based on a partial least-square regression and the soil spectral bands and selecting specific soil property datasets from the plurality of soil property datasets to represent soil properties of the specific geo-location, wherein the specific soil property datasets include property data and spectral band data for spectral bands used to determine the property data. The specific soil property datasets may then be used to generate a crop prescription of recommended hybrid seeds or population densities for the specific geo-location.

The invention relates to the technical field of environment-friendly additives, and discloses an environment-friendly additive for soil pollution remediation and an application method thereof.The environment-friendly additive is prepared from 5-20 parts of nano zero-valent iron, 2-15 parts of a nano carbon material and 3-18 parts of a nano mineral composite material; 5-25 parts of biochar, 2-10 parts of microbial flora and 1-10 parts of a plant source extract; 1-8 parts of a pH responsive material; 2-10 parts of a microcapsule material; the particle size range of the nanoscale zero-valent iron is 10-100 nm, and SiO2 or C is coated on the surface of the nanoscale zero-valent iron; the nano carbon material is selected from activated carbon nanoparticles, graphene and carbon nanotubes. The carbon-coated nano zero-valent iron is adopted, so that the technical effects of improving the oxidation resistance of the material and prolonging the active life are achieved. Compared with a traditional technical scheme without coating nZVI, the problems that the composite material is prone to oxidation inactivation and insufficient in long-term repair capacity are solved, and the composite material has more stable heavy metal removal performance in a complex environment.