31 results about "Soil functions" patented technology

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.

The utility model discloses a seedling lifting mechanism for medicinal wild jujube seedlings, which relates to the technical field of wild jujube seedling lifting appliances and comprises a vehicle body, an L-shaped fixing plate is fixedly connected to the lower portion of the front end of the vehicle body, a first electric telescopic rod is vertically arranged at the upper end of the L-shaped fixing plate, and a movable plate is arranged at the lower end of the L-shaped fixing plate. A telescopic rod of the first electric telescopic rod penetrates through the L-shaped fixed plate and is fixedly connected with the movable plate; the water tank is matched with the water hose, so that soil can be wetted conveniently, and seedling lifting work can be carried out more quickly; a first electric push rod and a movable plate are matched to conveniently drive a semi-circular ring to move up and down so as to realize a ground breaking function, a second electric telescopic rod and a movable block are matched to conveniently open and close the semi-circular ring so as to adapt to wild jujube seedlings of different sizes, and a cutting edge of a cutter is used to conveniently cut off a root system and break ground, so that the practicability is high. During seedling lifting, root systems of wild jujube seedlings can be kept, so that the wild jujube seedlings can be lifted more quickly, and the problem of low seedling lifting efficiency is finally solved.

The invention relates to microbial agent activated low-grade coal gangue graded and quality-divided artificial soil, preparation and application. The artificial soil comprises a bottom structure supporting layer, and a nutrition activation layer is laid on the structure supporting layer; the structure supporting layer adopts large-size-fraction low-grade coal gangue; the nutrition activation layer adopts a mixture inoculated with a microbial agent, and compost fermentation is performed after inoculation; the mixture is formed by mixing small-particle-grade low-grade coal gangue and local soil in equal proportion; a raised dust covering layer is arranged on the nutrition activation layer and adopts medium-grade low-grade coal gangue; the coal gangue nutrients are activated through the complex microbial inoculants, the coal gangue is divided according to the particle size, different grades of coal gangue and different treatment modes are adopted for different grades, and on the premise that the soil function is not affected, the cost can be reduced, the coal gangue absorption amount can be increased, and conversion from solid waste to artificial soil can be completed.

The invention belongs to the technical field of soil improvement, and discloses a soil conditioner with an acidified soil improving function and a preparation method thereof. The conditioner is prepared from biomass charcoal, peat containing humic acid, crab shells, eggshells, clamshells, bamboo charcoal, zeolite powder, kieselguhr, biogas residues, potassium fulvate, calcium magnesium phosphate fertilizer, animal waste and a microbial agent according to the mass percent. The invention relates to the technical field of soil improvement. The modifier realizes a multi-dimensional synergistic effect through alkaline neutralization, humus buffering, slow-release fertilizer supply and microbial activation, can significantly improve the pH value of acidified rice field soil after one-time application, increases 0.6-1.0 unit, effectively increases the contents of soil organic matters, total nitrogen, available phosphorus and available potassium, improves the soil structure and microbial activity, and improves the soil quality. And the yield of rice is increased by about 10% or above. The method is suitable for soil improvement and green agricultural production of southern acidic rice fields.

This invention addresses the common problems in existing technologies for determining the succession stage of vegetation communities in ecological restoration areas, such as high misjudgment rates using single indicators, lack of scientific basis for threshold classification methods, and insufficient comprehensiveness and accuracy of determination results. It proposes and discloses a more comprehensive and accurate method for determining the succession stage of vegetation communities in ecological restoration areas. This method first systematically obtains multi-dimensional indicator data, including plant community structural characteristics, soil functional attributes, and ecosystem functional performance, through quadrat surveys. Then, it constructs a three-level indicator system comprising a target layer, a criterion layer, and an indicator layer. The relative weights of each determination indicator are scientifically determined using the analytic hierarchy process (AHP), and a comprehensive succession index is finally calculated. Based on pre-established criteria for determining the succession stage of vegetation communities, the specific succession stage of the plant community can be accurately and objectively determined.

This invention discloses a method and system for tending coniferous forests in arid mountainous areas. The tending method includes: obtaining regional evaluation information of the target tree species; obtaining the regeneration probability value corresponding to each point within the potential distribution range, and combining it with seedling density to obtain the effective regeneration range, including high-altitude and low-altitude areas; obtaining the nutrient relative limitation index and altitude asymmetry index of different altitude areas within the effective regeneration range, and based on these indices, diagnosing the differences in nutrient limitation types among different altitude areas to obtain nutrient diagnosis results; and obtaining tending strategies for the effective regeneration range based on the regional evaluation information, the effective regeneration range, and the nutrient diagnosis results. The tending strategies include assisted migration and nutrient addition measures for corresponding high-altitude areas, and disturbance control and soil function restoration measures for corresponding low-altitude areas. This invention achieves low-cost and high-efficiency sustainable forest management.

The invention discloses water-saving, recarburizing and fertilizing artificial soil and a preparation method thereof. The method comprises the following steps: according to the multi-objective optimization requirement of degraded soil, aiming at the problems of single function, incomplete product quality evaluation and unstable inter-batch performance of current artificial soil, compounding high-nutrient organic compost, strong-water-storage organic compost and yellow subsoil according to a primary formula to prepare a primary screening material, and representing basic physicochemical properties, hydraulic characteristics and oxygen supply capacity; and constructing a minimum data set, preferably determining an optimal formula by using a soil quality index evaluation method, and further preparing artificial soil products on a large scale. The artificial soil prepared by the technical scheme has high organic matter and nutrient content and good moisture infiltration-storage performance, provides a multi-effect and stable-performance improved material for ecological management, and is suitable for the fields of urban landscaping land construction, mine ecological restoration, homestead reclamation and greening and the like.

The present invention relates to the technical field of soil function improvement, specifically a method for increasing carbon and expanding the capacity of paddy field soil based on biochar-based organic fertilizer. The method comprises: crushing the biomass raw material, pyrolyzing and cooling it to obtain biochar; immersing the biochar in a functional bacterial solution containing actinomycetes and bacillus for activation treatment to obtain modified biochar; mixing the modified biochar with decomposed straw for composting and fermentation to obtain organic fertilizers of different particle sizes; applying large-particle organic fertilizers to the deep soil, laying straw on the soil and covering it with soil, and applying small-particle organic fertilizers to the surface soil. The present application uses layered application to enable large-particle biochar to repair the deep soil structure and expand the carbon pool capacity. At the same time, the carbon-nitrogen synergistic metabolism driven by functional bacteria improves carbon stability, thereby achieving soil carbon increase and expansion while improving carbon sequestration efficiency, solving the contradiction between carbon sequestration and structural degradation and nutrient imbalance in traditional carbon increase and expansion technologies, and promoting the coordinated improvement of carbon sink function and agricultural productivity.

The invention belongs to the field of soil microorganisms and agricultural biology, and particularly relates to a composite regulating agent for producing glomalin-related soil protein, a preparation method and application, the composite regulating agent comprises a GRSP synthesis precursor, an AMF excitant, a GRSP synthesis auxiliary agent and a slow-release carrier according to the mass ratio of (15-25): 2.1: (1.7-2): (71.2-80.9); the slow-release carrier comprises pretreated cattail wool, activated carbon, sodium tripolyphosphate, water glass and a carbon dioxide reaction condensate. According to the invention, active and targeted excitation of AMF populations in soil can be realized. Space-time synergistic release is achieved by means of a specially-made slow-release carrier, the problem that synthesis of AMF GRSP cannot be actively regulated and controlled in a targeted mode in the prior art is solved, and a non-transgenic non-viable-bacterium soil function strengthening product capable of being applied on a large scale is provided. And the slow release period is long and can reach 60 days.

The invention discloses a complex microbial inoculant for repairing alpine degraded grassland based on indigenous mycorrhizal fungi and preparation and use methods thereof, and relates to the technical field of environmental microbial ecological restoration, the complex microbial inoculant comprises: a carrier which is a mixture of highland barley straw powder and humic acid in a mass ratio of 3: 1; according to the arbuscular mycorrhizal fungi separated and screened from rhizosphere soil of alpine meadow degraded grassland in Qilian Mountain, the parasitic relationship between mycorrhiza and bacteria is utilized, aboriginal arbuscular mycorrhizal fungi hyphae provide a colonization space for phosphate-solubilizing bacteria, and the bacteria secrete organic acid to dissolve soil insoluble phosphorus and are directly transported to plant root systems through a hypha network, so that the phosphorus-solubilizing bacteria are degraded, and the phosphorus-solubilizing bacteria are degraded. According to the invention, a synergistic mechanism of'hypha-phosphorus channel 'is formed, meanwhile, bacillus subtilis is added to secrete antibacterial substances such as lipopeptide antibiotics and inhibiting pathogenic bacteria such as fusarium, functional microorganisms are enriched on the surface of hypha, and the functions of mutual excitation, ecological niche antagonism and the like of the functional microorganisms are utilized, so that the soil functionality and the stress resistance of host plants are enhanced.

The invention belongs to the technical field of agriculture, and provides a construction method of a soil high-carbon interlayer. The high-carbon interlayer is composed of an adjustable adsorption and release layer, a storage and capacity expansion layer and a high-carbon stable layer, directional function regulation and control can be carried out according to soil obstacles (the position and thickness of each functional layer are adjustable), and different functional layers can be fused with each other as time goes on. Materials with different carbon-nitrogen ratios and carbon forms are gradually converted and released into soil organic matters, the three layers complement one another and act together, multiple targets of soil structure improvement, pollution reduction, recarburization, quality improvement and the like can be achieved, and the functions are powerful. According to different soil obstacles, the advantages and functions of the interlayers are adjusted, the hierarchical design and layout positions of the adsorption and release layer, the storage and capacity expansion layer and the high-carbon stable layer in the high-carbon interlayer are optimized, the soil is directionally improved, and the purposes of recarburization, carbon stabilization and soil function activation are achieved.

The invention relates to the technical field of forest management, in particular to a method for promoting decomposition of litters in an artificial forest of larch. The method comprises the following steps: S1, reducing canopy density through differential intermediate cutting; s2, cleaning and physically crushing the larch litter layer of the intermediate cutting zone, and spreading the crushed litter in a forest land cleaning zone and / or forming a stacking zone at the position 0.5 m away from the two sides of a plant; s3, artificially inoculating a biological agent and additionally applying a nitrogen fertilizer to accelerate the decomposition of litters; wherein the step of artificially inoculating the biological inoculant comprises the substeps of inoculating a trichoderma-penicillium complex inoculant on the surface layer of the litter, injecting an inoculant-water-retaining agent complex into the middle layer, and spraying a chitosan solution on the bottom layer; the step of increasing the nitrogen fertilizer comprises embedding a slow-release nitrogen fertilizer into the surface layer of the litter, loading a long-acting nitrogen element into the middle layer and spraying a quick-acting nitrogen fertilizer to the bottom layer; s4, nitrogen-fixing shrubs are directionally and complementarily planted, herbaceous plants are sown, and a multi-element shrub and grass community is constructed. The method disclosed by the invention has important significance on repairing the soil function of the artificial forest of the larch, fertilizing the soil, activating nutrient circulation, promoting renewal succession of the larch and realizing sustainable development of a forest ecological system.

The invention discloses a device and method for efficiently degrading soil micro-plastics, and belongs to the technical field of soil remediation. The input end of the physical-chemical cooperation mechanism is connected with the output end of the pretreatment mechanism through a spiral conveyor, and the physical-chemical cooperation mechanism is used for assisting the soil micro-plastics in biodegradation; the input end of the biological enhanced degradation mechanism is connected with the output end of the physical-chemical synergistic mechanism, and the biological enhanced degradation mechanism decomposes micro-plastics in the soil by efficiently degrading microbial florae or enzymes secreted by the microbial florae. Compared with traditional pretreatment, the method has the advantages that an ideal reaction interface is provided for biodegradation and physical-chemical synergistic effect; mild treatment conditions are adopted in the whole process, and damage of high temperature and high pressure to soil physicochemical properties is avoided; the biological stimulant and the catalyst can be naturally degraded or recycled, so that the risk of secondary pollution is avoided, and in-situ preservation and rapid recovery of soil functions are realized.

The utility model discloses an automatic grouting repair device for karst collapse based on microbial mineralization, which belongs to the ecological repair technology for karst collapse based on microbial mineralization and comprises a slurry storage system, a carrier for storing microorganisms, a self-adaptive grouting system and a dynamic monitoring system, the device is installed in a karst subsidence area to be reinforced; the grouting liquid storage pool is connected with a grouting pipe through a grouting pump and a grouting pipeline in sequence, and the function of grouting and reinforcing soil is achieved. According to the device, a microbial grouting reinforcement technology is adopted, the problem of environmental pollution caused by traditional concrete grouting is greatly relieved, the slurry viscosity is small, the reinforcement diffusion range is wider under low pressure, and disturbance to the stratum is small. And after the soil parameter data reaches a preset value, soil body reinforcement is completed, and then equipment is dismantled for recycling.

The invention belongs to the technical field of microorganisms, and discloses application of a straw rot-promoting fungus strain in straw returning to the field. The invention also discloses a method. The application of the straw decay-promoting fungi to straw returning comprises the following specific steps: (1) cutting straws to be treated into small sections, and drying; (2) weighing the dried straw, and uniformly spraying the bacterial liquid; and (3) mixing the straw sprayed with the bacterial liquid with soil, burying the mixture into a soil layer, and completing field returning operation. The straw decay-promoting fungus has the characteristics of saline-alkali resistance, drought resistance and low temperature resistance, and after the straw decay-promoting fungus is applied to straw returning, the structural characteristics of soil are comprehensively optimized, the formation of large aggregates is promoted, and the pore condition is improved; the soil alkalinity is synchronously reduced, the organic matter accumulation and nutrient effectiveness are improved, the soil enzyme activity is improved, the crop yield is finally increased, and the problems that the straw decomposition efficiency is low, the strain practicability is poor, and soil functional flora imbalance is easily caused in the low-temperature drought environment in the straw returning process at present are solved.

The application relates to the technical field of garden maintenance. A garden maintenance method, device, garden maintenance equipment and medium are provided, wherein the method comprises the following steps: deploying an electrically conductive electrode network, a drip irrigation pipeline and a multi-parameter sensor array in a rhizosphere of a garden plant to form a deployment system; based on a preset plant growth stage identification signal, starting a cooperative control function of the deployment system to obtain a control starting state; using the control starting state to guide metabolic activity of soil functional microorganisms and establishing an activated microbial metabolic network; based on real-time monitoring data of the multi-parameter sensor array, performing closed-loop dynamic optimization on the activated microbial metabolic network to generate an optimized soil function enhancement strategy, so that the technical effects of improving nutrient resource utilization efficiency, enhancing humus synthesis capacity, reducing resource waste and controlling soil ecological risk are achieved.

The utility model relates to the technical field of crushing devices, in particular to a low-temperature crushing device for a soil remediation functional bacterium agent, which comprises a workbench and a low-temperature box, a low-temperature box used for low-temperature freezing of the fungicide is arranged above the workbench, and a processing groove is formed in the low-temperature box. According to the utility model, liquid nitrogen is transmitted by the low-temperature box before the microbial inoculum is crushed to be quickly frozen, so that the microbial inoculum is in a low-temperature dormant state, the damage to the activity of the microbial inoculum due to temperature rise caused by heat generated by friction in the crushing process is avoided, and meanwhile, the original characteristics of the microbial inoculum can be furthest reserved in a low-temperature environment; it is ensured that the microbial agent can play expected soil improvement and functional restoration roles in subsequent use, and the restoration effect is improved; the structure of the microbial inoculum can be embrittled and the toughness of the microbial inoculum can be reduced by using liquid oxygen freezing, so that the microbial inoculum can be crushed more uniformly during crushing, particle sizes are prevented from being different, the crushing quality is improved, and a better basis is provided for subsequent mixing and application operations.

The invention discloses a compound contaminated soil in-situ foam remediation method, and relates to the technical field of soil remediation. According to the method, a foam injection structure is arranged on the composite contaminated soil, a surfactant and a repairing agent with oxidability are mixed to form a mixed solution, the mixed solution is injected into the soil after foaming treatment, organic pollutants are oxidized and degraded through the repairing agent, and stabilization of heavy metal is achieved through reaction products of the repairing agent. The foam carrier improves the mass transfer uniformity of the agent, synchronously solves the problem of combined pollution, does not need subsequent treatment, retains soil functions, and is suitable for efficient in-situ remediation of organic matter and heavy metal combined polluted soil.

The invention discloses a comprehensive soil health evaluation method and system based on soil functions and ecological risks, and the method comprises the steps: S1, taking farmland soil health as an evaluation target, dividing an evaluation region, and obtaining index data; s2, clearly evaluating regional environment safety indexes and ranges; s3, screening important soil indexes by adopting a principal component analysis method, determining scoring functions and weights of the important soil indexes, and establishing a soil quality evaluation system; s4, dividing soil functions by adopting an analytic hierarchy process, calculating the weight and the multifunctional index of each function, and establishing a soil function health evaluation system; and S5, comprehensively evaluating the health condition of the soil by adopting a Nemero index method. According to the method, the cultivated land soil indexes are subjected to multifunctional category division, so that healthy and green production of cultivated land soil is facilitated; and meanwhile, the complex characteristics of the soil can be identified and analyzed more accurately.

The invention discloses a method for evaluating the influence of microplastics on greenhouse soil functions under temperature mediation, and relates to the technical field of environmental pollutant behavior and soil ecological response evaluation. The device simulates the amplification effect of a facility agriculture high-temperature scene on a micro-plastic disturbance behavior, and is closer to the actual state of a micro-pollution behavior in an agricultural greenhouse and other semi-closed spaces. By selecting four types of PE micro-plastics with different forms, experiments are carried out under the same quality and same ultraviolet irradiation conditions, and on the premise that variables such as plastic types, aging time, irradiation uniformity and the like are kept consistent, the synergistic effect of colors and forms on aging reaction can be revealed, so that the structural dimension precision of plastic aging sensitivity evaluation is improved. The aluminum foil tray has the characteristic of reflection spectrum consistency, so that the influence of local hot spots or shadows is effectively reduced, and the problem of experimental errors caused by non-uniform illumination in a traditional aging experiment is solved.

The invention discloses a method for preparing vegetation planting soil by utilizing industrial solid waste and microorganisms and application of the vegetation planting soil. The method comprises the following steps: mixing 80-90% of high titanium slag, 7-15% of sandy soil or phosphogypsum and 2-5% of titanium gypsum into a vegetation matrix according to specific particle size grading; inoculating a composite strain consisting of bacillus mucilaginosus and azotobacter chroococcum, fermenting at 30 DEG C for 12-18 days, and dynamically monitoring the contents of alkali-hydrolyzable nitrogen, available phosphorus and potassium and biologically extractable titanium; then, alfalfa is planted, arbuscular mycorrhizal fungi and rhizobium suspensions with the OD600 being 0.8-1.0 are regularly irrigated, and curing is conducted for 12-18 days; and irrigating and maintaining for 12-18 days by using chlorella propagation liquid every 4-6 days, and finally reserving the whole plant or harvesting to obtain the plant growing planting soil. According to the method, industrial solid waste is efficiently converted into a functional planting medium through the multi-stage biological-mineral synergistic effect, solid waste recycling and soil function reconstruction are achieved, and the method has the environment restoration and ecological reconstruction value.

The utility model belongs to the technical field of seeding equipment, and particularly relates to a seeding machine with a soil covering function, which comprises a frame, an advancing roller, a soil covering roller and an adjusting transmission component, a driving shaft and a rotating shaft are arranged on the lower side of the frame and are rotatably arranged on two sides of the bottom surface of the frame, the soil covering roller is arranged on the other side in the frame and is fixedly arranged on the rotating shaft, and the adjusting transmission component is arranged on the frame. The two supporting frames are fixedly arranged on the two sides of the frame respectively, a soil breaking and sowing assembly is arranged in the frame, and the rotation output speed of the soil breaking and sowing assembly and the rotating shaft is adjusted through an adjusting transmission assembly. According to the utility model, the driving equipment on the driving assembly drives the forward roller to rotate and drives the soil covering roller to flatten the soil in the seeding furrows on the land, so that the seeds after seeding are buried, the device can realize continuous operation of automatic moving, seeding and soil covering, and the seeding quality and efficiency are improved.

The invention discloses a green codonopsis pilosula planting method based on synergistic regulation of a microbial agent and nutrient elements. The green codonopsis pilosula planting method comprises the following steps: applying a codonopsis pilosula sulfenyl slow-release fertilizer and an organic fertilizer in combination with soil preparation before planting; radix codonopsis seedlings are uniformly placed on the film side; uniformly spraying a microbial agent into the ditches; topping is conducted in the vigorous growth period after the codonopsis pilosula turns green, medium trace elements are sprayed to leaf surfaces, the spraying amount is appropriate for leaf surface liquid dropping, other field management is normally conducted, and the codonopsis pilosula medicinal material can be obtained after the overground part is withered in autumn. According to the planting method disclosed by the invention, the contents of organic matters, alkali-hydrolyzable nitrogen and quick-acting phosphorus in a plowing layer of a codonopsis pilosula planting field are increased through cooperative regulation of overground (stems and leaves) and underground (root systems), the diversity of functional bacteria in soil and the activity of catalase, sucrase and phosphatase are improved, excessive growth of overground stems and leaves is controlled, and nutrient absorption of leaf surfaces is supplemented and regulated; the root length, the root thickness, the single root fresh weight and the acre yield of the codonopsis pilosula are remarkably improved, and meanwhile, the incidence rate of the root rot of the codonopsis pilosula is also remarkably reduced.

The invention discloses a near-nano carbon-based material for function recovery and carbon fixation capability improvement of alien plant invasion damaged soil and a preparation method of the near-nano carbon-based material, and belongs to the technical field of soil remediation and carbon fixation and sink increase. The near-nano carbon-based material is prepared by the following steps: by taking an external invasive plant Canadian yellow flower stalk as a raw material, crushing, screening, mixing with water, carrying out hydrothermal reaction to obtain a hydrothermal carbonization product, and carrying out ball milling and screening treatment to obtain the near-nano carbon-based material. The obtained near-nano carbon-based material has a high-aromaticity carbon skeleton, a rich mesoporous-macroporous structure and a relatively high amorphous silicon content, can efficiently adsorb and passivate residual allelochemicals of solidago canadensis, reconstruct an aggregate structure, promote microbial diversity and key enzyme activity recovery, strengthen organic carbon-mineral bonding and improve the stability of the material. Therefore, invasion-induced multifunctional soil degradation is accurately reversed, and in-situ remediation of the soil structure and function and improvement of the carbon immobilization capacity are achieved. Experimental results show that the carbon-based material provided by the invention can increase the multifunctional index of invasion-induced damaged soil by about 560% and increase the carbon sequestration index by about 48.1%.

The application discloses a kind of medicine field soil health assessment system and method, it is related to soil health assessment technical field;System includes: data acquisition module, the physical and chemical parameters of soil are monitored in real time based on sensor network, using wireless transmission technology, the data collected are sent to data processing center, and using remote sensing technology obtains large-area topography and geomorphology information and vegetation cover condition;Data processing module, the original data collected are washed, denoised and standardized, and abnormal values and error data points are removed, and missing data is filled using moving average method or interpolation method;According to the rules set in advance, compare the reference value in historical database with sensor real-time monitoring data.The application covers bulk density, porosity, organic matter, microbial activity and cold and drought resistance index and multiple dimensions, fully analyzes soil function characteristics, uses judgment matrix to calculate index weight, combines PCA to extract biological index principal component, and enhances the reliability of evaluation result.

The invention discloses a crop rotation system screening method and system for different soil types, and relates to the technical field of agricultural intelligent decision making, and the method comprises the steps: dividing a target land parcel into a plurality of sub land parcels; a plurality of crop rotation schemes are constructed, each crop rotation scheme comprises a plurality of rounds, each round comprises a plurality of crops to be planted at the same time, and each crop is distributed to one sub-plot in one round; defining an action value of each crop on a plurality of soil function factors for each crop; calculating a complementary value between any two crops based on the promotion effect value; calculating a complementary value score sum of any rotation scheme based on the complementary value; and selecting the rotation scheme with the highest complementary value score sum from the plurality of rotation schemes as output. The method can always ensure that at least one optimal sub-plot of any crop is suitable for planting at any stage in a multi-round planting sequence, and solves the problem of poor overall coordination of a traditional crop rotation scheme.

The invention discloses a rapid restoration method for a degraded phyllostachys praecox forest, and belongs to the technical field of forestry ecological restoration. The method comprises the steps of degradation degree diagnosis and early-stage cleaning, old bamboo cleaning and bamboo forest structure optimization, soil deep ploughing and obstacle layer breaking, base fertilizer precise application, soil dressing improvement and later-stage maintenance and dynamic regulation and control. According to the improvement of the foreign soil, adaptive foreign soil is accurately selected, the laying thickness is determined according to the degeneration degree after pretreatment, laying is conducted in the bamboo rhizome vigorous growth period or the bamboo shoot bud differentiation period, and scientific watering is combined to promote fusion with original soil. Through a system integration technology, rapid soil function restoration, bamboo rhizome growth environment improvement and bamboo forest productivity improvement are achieved, and the method has the advantages of being rapid in restoration, good in effect, sustainable and wide in applicability and is suitable for restoration of phyllostachys praecox forests with different degradation degrees.

The invention relates to the field of pepper phytophthora blight prevention, and discloses a pepper phytophthora blight prevention cultivation method based on biological control, which comprises the following steps: S1, soaking seeds with a plant source solution, and then stimulating seed resistance through a compound microbial agent coating; s2, before sowing, applying a functional bacterial agent and a biochar-based fertilizer into the soil to improve the micro-ecology of the soil; s3, wide-ridge cultivation is adopted, a photodegradable mulching film is covered, and meanwhile aromatic plants are combined for intercropping; s4, microbial metabolites and mineral oil are sprayed from the seedling stage to the fruit setting stage; s5, nutrition regulation and control are carried out through spraying of a carbon and nitrogen metabolism regulating agent and drip irrigation of a chelated microelement fertilizer; and S6, treating sick and residual bodies by using earthworm compost, and regulating and repairing the soil through sulfur. Through cooperation of multi-link biological prevention and control measures such as coating of the compound microbial agent, application of the soil functional microbial agent and the biochar-based fertilizer, spraying of microbial metabolites and the like, reproduction of pathogenic bacteria is effectively inhibited, and the prevention and control effect of pepper phytophthora blight is remarkably improved.

The invention provides a farmland soil micro-plastic pollution risk evaluation method based on multi-dimensional integration, and relates to the technical field of agricultural environment monitoring and pollution evaluation, and the method comprises the steps of sample collection and pretreatment, soil physicochemical property analysis, microbial community analysis, micro-plastic extraction and identification, pollution risk quantification, and data integration and visualization. According to the method, the limitation of traditional single index evaluation is broken through, and soil physicochemical properties, microflora characteristics and microplastic form and abundance data are creatively integrated. Through microorganism co-occurrence network analysis, potential mechanisms of pollution and soil function degradation are disclosed, for example, the number of fungal community modules is reduced and bacterial diversity is reduced due to microplastic pollution, and a theoretical basis of a microorganism level is provided for pollution treatment. Compared with the prior art, the method achieves the dynamic association of pollution and an ecological system, and is more comprehensive and reliable in evaluation result. An LDI R8700 system is combined with a standardized extraction process, so that efficient identification of the micro-plastics is realized.

The application discloses a kind of natural gas project keeps and improves soil function compensation value accounting method, it is related to environmental protection engineering technical field;Including the following steps: the project characteristics of multiple natural gas construction project engineering area are classified, and undisturbed area is selected as control sample plot;Nutrient detection is carried out to the engineering area and the control sample plot;According to the detection result of the nutrient detection, the nutrient of each type engineering area is compared with the nutrient of the control plot, to obtain the recovery period that the engineering area recovers to the nutrient level of the control sample plot;The total value of soil nutrient loss in the engineering area is calculated based on the recovery period.The application can more accurately calculate the compensation value of keeping and improving soil function, lay the foundation for calculating the calculation of natural gas construction project function compensation value, and can evaluate the soil function recovery after natural gas construction damage, with the characteristics of accurate calculation result and strong operability.