233 results about "Humus" patented technology

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.

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 relates to the technical field of biological improvement methods, and discloses a comprehensive biological improvement method for severe saline-alkali grassland. According to the method, S1, early evaluation and planning are conducted, S2, straw returning to the field and soil preliminary conditioning are conducted, S3, shallow ploughing and soil preparation operation is conducted, S4, microbial inoculation is conducted to strengthen soil activity, S5, pioneer plant sowing and planting are conducted, S6, precise irrigation and drainage regulation and control are conducted, and S7, long-term monitoring and later-period management and maintenance are conducted, through straw returning to the field and microbial inoculation, the pH value of soil can be reduced to 8.0-8.5 from the initial 8.5-10.5, and the salt content is reduced to 0.5%-1% from 1%-3%; compared with the prior art, the method has the advantages that the alkalinization degree is obviously reduced, meanwhile, the organic matter content is increased from lower than 1% to 2%-3%, the soil structure is improved, the porosity is increased, the air permeability and the water permeability are enhanced, a good soil environment is created for plant growth, for example, humus generated by straw decomposition can promote soil particle aggregation, a stable aggregate structure is formed, and the water and fertilizer retention capacity of soil is improved.

The invention discloses streptomyces DLS188 and application thereof, and belongs to the technical field of microorganisms. The preservation number of the strain is CGMCC (China General Microbiological Culture Collection Center) No.33250. The strain is high in humic acid production capacity when being used for fermenting lignocellulose, and the strain is used for fermenting rice straw powder and wheat bran to prepare DLS188 bacterial fertilizer. After the DLS188 bacterial fertilizer is added into soil and wheat is sown, agronomic characters such as the plant height, the leaf length and the leaf number of the wheat can be remarkably promoted. Research on the soil after wheat sowing is completed shows that the addition of the DLS188 bacterial fertilizer significantly changes the microbial community of the soil, increases the diversity and abundance of the microbial community, and increases the content of humus in the soil. It is further shown that the DLS188 bacterial fertilizer is beneficial to adjustment of the soil microbial community structure and can be used for soil improvement. And the method has important significance for realizing resource utilization of agricultural straws.

The invention provides a special cow dung organic fertilizer for saline-alkali soil and a preparation method thereof, and the preparation method specifically comprises the following steps: 1, carrying out mixed fermentation on a cow dung substrate and compound bacterial powder, 2, adding modified charcoal and salt-tolerant bacterial powder, mixing and decomposing, 3, mixing and granulating with desulfurized gypsum-vermiculite-quartz sand micro-powder, humus soil and trace elements, and 4, carrying out granulation on the granules to obtain the special cow dung organic fertilizer for saline-alkali soil. The special cow dung organic fertilizer for saline-alkali soil is obtained; through a multi-strain synergistic fermentation process, modified functional material compounding and stage temperature-controlled decomposition, the defects of an existing saline-alkali soil modifier in the aspects of microbial activity, nutrient release efficiency, soil structure remediation and the like are overcome.

The invention belongs to the technical field of agricultural machinery, and particularly relates to a wheat harvesting and straw deep burying and returning all-in-one machine which comprises a harvesting and threshing part, a walking part, a smashing part, a feeding part and a deep soil turning part. Soil is scarified through the deep soil scarifying part, then the ground wheat straw is buried to the bottom of the scarified soil through the feeding part, deep burying and returning of the wheat straw are achieved, the deeply-buried straw is decomposed in deep soil, humus is more easily formed, the content of organic matter in the soil is increased, and the yield of the wheat straw is increased. Deep burying can promote the formation of a soil aggregate structure and enhance the permeability and water and fertilizer retention capability of deep soil, so that surface hardening possibly caused by conventional returning to the field is avoided; a series of working procedures of harvesting, threshing, smashing and deep burying are achieved through the walking component, and then the convenience and efficiency of straw returning to the field are improved.

The invention relates to the technical field of desert control, in particular to a vegetation planting method for desert control, which comprises the following steps: building a protective barrier by using a wind prevention and sand fixation material; performing compression molding on the agriculture and forestry solid waste to obtain an ecological cylinder; the interior of the ecological cylinder is sequentially filled with a part of anti-seepage breathable sand and a part of humus soil, then sequentially filled with various culture soil containing strains, and then filled with the other part of humus soil and the other part of anti-seepage breathable sand; filling a carbon-based fertilizer and a sustained-release material containing microbial strains capable of decomposing organic matters among the culture soil containing the strains; a specific plant is planted in the ecological cylinder, and it is ensured that the root of the plant is located in the culture soil containing the strains; after a plurality of holes are punched in the vegetation planting area, the ecological cylinders are inserted into the holes, fixed and watered, and vegetation planting is completed. According to the invention, the growth and reproduction of plants in the desert environment can be effectively promoted, the vegetation coverage area is gradually increased, and the desert ecological environment is improved.

The invention relates to a mycorrhizal cultivation method for improving the stress resistance of pinus khasys seedlings, and belongs to the technical field of agricultural planting, the cultivation method comprises the following steps: (1) compounding fibrous belly fungi, bolete and russule virens into a microbial inoculum, and culturing to prepare microcapsules; (2) taking turf, vermiculite, humus soil and perlite as substrates, and adding a microcystis agent and a water-retaining agent; (3) the seeds are disinfected and sown, and seedlings are domesticated through light intensity gradient, water stress and temperature fluctuation; 4, during transplanting, abscisic acid is used for treating root systems, organic fertilizer is pre-filled, and mycorrhizal activation promoting liquid is perfused, through the synergistic effect of composite mycorrhizal fungi and stress domestication, the stress resistance, the survival rate and the afforestation adaptability of pinus khasys seedlings are remarkably improved.

The invention provides an efficient breeding method of cremastra appendiculata, and relates to the technical field of cremastra appendiculata breeding. The efficient breeding method comprises the steps of soil preparation and land selection, strain laying, wood laying, gap filling, seed dressing, sowing, shading and management. According to the method, the specific method is adjusted, humus soil containing a compound microbial agent is adopted to fill gaps among wood, then sowing is conducted, the germination rate of seeds is increased, sawdust, perlite, coco coir, decomposed organic fertilizer, bamboo charcoal powder and pyroligneous liquor are used for seed dressing before sowing, the air permeability of a matrix is improved, seeds are prevented from being rotten due to accumulated water, and breeding of pathogenic bacteria is inhibited; the water-retaining property of the substrate is increased; and symbiotic bacteria planting and seed metabolism are promoted. The foliar fertilizer containing the garlic extracting solution, the onion leaching solution, the monopotassium phosphate, the boric acid and the urea is adopted, elements needed by growth of the rhododendron simsii are provided, the strong insecticidal and bactericidal effects are achieved, and therefore the incidence rate of diseases and pests is reduced, and the seedling survival rate and the breeding efficiency of the rhododendron simsii are improved.

The invention relates to the technical field of fertilizers, and discloses a fertilizer for promoting fruit swelling and color changing of crops and a preparation method thereof, the fertilizer comprises a first-stage material, a second-stage material, a modified residue material, a complex microbial inoculant, nutrient soil and humus soil; the fertilizer prepared by the invention can strongly improve the fruit quality, promote rapid expansion and coloring of young fruits, and is beneficial for increasing the sugar degree of the fruits, so that the taste of the fruits is improved, the fruits are large in size, bright in appearance and excellent in taste quality, and the income is increased.

The invention discloses an engineering residue soil improvement matrix and application thereof, the engineering residue soil improvement matrix comprises a base layer and a planting layer, the base layer comprises 50-70 wt% of engineering residue soil, 10-15 wt% of humus soil, 6-8 wt% of a fiber material, 3-5 wt% of a slow release fertilizer, 1-2 wt% of sulfur powder, 2-4 wt% of sodium polyacrylate, 3-5 wt% of polyacrylamide, 2-4 wt% of sodium hydroxide, and 3-4 wt% of a straw decomposition agent; the planting layer comprises 25 to 50 wt% of engineering residue soil, 20 to 30 wt% of peat soil, 4 to 6 wt% of compost, 6 to 8 wt% of a fiber material, 3 to 5 wt% of a slow release fertilizer, 1 to 2 wt% of sodium polyacrylate, 1 to 2 wt% of sodium hydroxide, 3 to 4 wt% of straw biochar, 3 to 4 wt% of a straw decomposition agent, 2 to 4 wt% of zeolite, 3 to 5 wt% of desulfurized gypsum, 1 to 2 wt% of nitrogen-fixing bacteria and 1.5 to 3 wt% of plant seeds. On the basis of a thick-layer base material spraying slope protection technology, spray-seeding materials are improved, waste muck is recycled, and land occupation and water and soil pollution caused by traditional muck landfill or stacking are avoided.

The invention provides a seedling culture substrate for sophora moorcroftiana. The seedling culture substrate comprises the following components in parts by weight: 0-60 parts of loess, 30-60 parts of humus soil and 5-25 parts of sheep manure, the pH value of the substrate is 6.0 to 7.5. The invention further provides a preparation method of the matrix and application of the matrix in sophora moorcroftiana seedling culture. The loess provides a skeleton structure, the humus increases organic matters and porosity, and the sheep manure improves the fertilizer retention capacity, so that the substrate achieves an ideal state of clustering by hand holding and scattering by light touch through the cooperation of the loess, the humus and the sheep manure, the air permeability and the water retention capacity are improved, the pH value of the substrate is 6.0-7.5, the substrate meets the growth requirement of sophora moorcroftiana, and the root system dysplasia caused by acid or alkaline stress is avoided. The components of the matrix can be obtained from local materials, and the matrix can be effectively used for sophora moorcroftiana seedling raising by analyzing and reconstructing the matrix.

The invention discloses an alpine meadow ecological construction maintenance method, which relates to the technical field of ecological engineering, and comprises the following steps: cutting a meadow by using cutting equipment, and stripping by using stripping equipment; humus soil under meadows is collected after stripping; a meadow intelligent maintenance bin is used for carrying out stockpiling maintenance on the stripped meadow; humus collected after stripping is used for conducting back-laying recovery on the maintained meadow, in the growing period after back-laying of the meadow, potash fertilizer is applied to the meadow, and 1.5-2 kg of potash fertilizer is applied per 400 square meters. According to the construction and maintenance method, the survival rate of the meadow is increased, the construction cost is lower, the construction efficiency is higher, and scientific basis and technical reference can be provided for stripping, stockpiling, maintenance and laying-back work of the alpine meadow in different seasons.

The invention belongs to the technical field of agriculture, and particularly relates to a preparation method of artificial soil, which comprises the steps of two-stage fermentation, construction of a nano mineral and biochar composite skeleton system, inoculation of a complex microbial inoculant, soil activation and the like. According to the invention, by systematically simulating a natural soil forming mechanism, combining soil, biology and material science, and surrounding three key dimensions of organic matter gradient conversion, mineral skeleton precision construction and microbial community cultivation, synergistic aerobic fermentation of multi-source organic wastes is improved; according to the method, a nano-scale mineral activation and biochar modification technology is developed to construct a honeycomb-like multi-stage pore structure, and meanwhile, a specific functional microbial community is implanted, so that high humus, high structural stability and high biological activity of the cultivated soil are achieved while rapid establishment of a soil self-sustaining ecosystem is realized.

The invention relates to the technical field of agricultural microorganisms, and discloses stress-tolerant bacillus velezensis L-29 and application thereof. The bacillus velezensis L-29 is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCC No.35587. The bacillus velezensis L-29 is named as bacillus velezensis L-29. Experiments prove that the bacillus velezensis L-29 can adapt to various extreme environments, can survive and proliferate under the extreme environments of drought conditions simulated by 0-25% PEG 6000 under the conditions that the pH is 2-12 and the salt concentration is 1.5%, and has various functions of soil improvement (organic matter decomposition and phosphorus activation), plant growth promotion, broad-spectrum disease control and the like. In the secondary fermentation stage of compost, humus generation can be remarkably promoted, compost maturation is accelerated, the good colonization ability is achieved, and after an obtained compost product is applied to normal soil, the nutrient effectiveness can be improved, crop growth is promoted, and the disease resistance is enhanced.

The invention discloses a method for preparing regenerated planting soil from muck. The method comprises the following steps of feeding and screening, weighing and metering, mixed feeding, primary crushing and mixing, secondary crushing and mixing and finished product discharging. The equipment for preparing the regenerated planting soil from the muck comprises a feeding device, a screening device, a belt conveyor assembly with a scale, a primary crushing and mixing device, a secondary crushing and mixing device and a finished product belt conveyor, the feeding device conveys dry soil, wet soil and humus soil into the screening device, and the screening device conveys the screened dry soil and wet soil to the belt conveyor assembly with the scale; the primary crushing and mixing device receives dry soil, wet soil and humus soil, the dry soil, the wet soil and the humus soil enter the secondary crushing and mixing device after being subjected to primary crushing and mixing, finished planting soil is obtained through crushing and mixing, and the finished planting soil belt conveyor is used for receiving and transporting the finished planting soil output by the secondary crushing and mixing device. The resource utilization rate of the muck is increased, and the stacking of the muck and the pollution to the environment are reduced.

The invention discloses a three-section type seedling raising method for cremastra appendiculata, which comprises the following steps: carrying out seed bacteria-accompanying germination culture, carrying out protocorm bacteria-accompanying germination culture, transplanting seedlings, preparing a Coprinus albiculatus bag by using Coprinus albiculatus as bacteria for bacteria-accompanying germination culture, crushing the Coprinus albiculatus bag into particles, mixing the particles with 3cm sawdust blocks to obtain a mixed matrix, adding humus soil, and carrying out seedling raising. The method solves the problems of low seed germination rate, low seedling growth speed, low transplanting survival rate and the like of the cremastra appendiculata. According to the three-section seedling raising method, an alternative scheme with commercial feasibility is provided for large-scale production of the rhododendron simsii, and the technical principle of the method can be further expanded and applied to conservation and commercial cultivation of other rare orchid plants. The future research can further optimize the symbiotic strain combination and environmental control parameters so as to continuously improve the stability and the application range of the technology.

The invention discloses a seedling raising and transplanting method for mangrove plant Aegiceras corniculatum based on external application of gibberellin, and belongs to the technical field of saline-alkali plant cultivation and mud flat ecological restoration. The method mainly comprises the four stages of seed disinfection and gibberellin soaking, germination cultivation, seedling cultivation, salinity domestication and mud flat transplanting. After being disinfected, the seeds are soaked in a gibberellin solution with the concentration being 300 mg / L, gibberellin with the same concentration is sprayed regularly during germination, and the germination rate and the germination speed are increased. In the seedling stage, humus soil and mud flat bottom mud mixed matrix is adopted for cultivation, and growth is promoted by spraying 100 mg / L gibberellin to leaf surfaces and injecting 25 mg / L gibberellin to rhizosphere. After seedlings are formed, the seedlings are subjected to step-by-step salinity domestication (5 per thousand to 30 per thousand), gibberellin spraying and rhizosphere injection are carried out at regular intervals, and the stress resistance of the seedlings is enhanced. The method can effectively shorten the seedling raising period of Aegiceras corniculatum, improve the seedling raising efficiency, enhance the adaptive capacity of seedlings to the tidal zone environment, and facilitate rapid recovery of a mangrove forest ecosystem.

The utility model relates to the technical field of garden humus treatment, and discloses an environment-friendly garden humus recovery device which comprises a crushing assembly and a storage assembly, the crushing assembly is used for crushing humus and comprises a crushing box and a crushing mechanism, and the crushing mechanism is rotationally arranged in the crushing box in the horizontal direction; one end of the storage assembly rotates on the crushing box, the storage assembly comprises a grabbing mechanism and a conveying mechanism, and the grabbing mechanism shifts humus to the conveying mechanism; one end of the conveying mechanism is arranged above the crushing box, and the humus is conveyed into the crushing assembly. According to the utility model, the material stirring driving piece and the material stirring plate of the grabbing mechanism are matched, so that humus stacked on the ground can be effectively grabbed, and the problem that a large structure is difficult to shovel up is avoided; and the humus is conveyed to the crushing assembly in combination with the conveying mechanism, so that the integration of grabbing, transporting and crushing is realized, and the recovery efficiency of the humus is remarkably improved.

A kind of akebia trifoliata seed seedling method, comprising the following steps: selecting suitable nursery land;Organic fertilizer is applied, soil is ploughed, and seedbed is made;Sterilize to seedbed ridge surface, after sterilization, forest humus and wood ash are covered on seedbed ridge surface, then mulch is covered on seedbed;Fully mature akebia trifoliata fruit is collected, seed is taken, washed, and dried;Seed is soaked with carbendazim solution, after soaking, seed is mixed with clean river sand, then covered with straw, placed in cool place, daily water is sprayed to ensure that straw is wet, until seed is white to reach requirement;According to predetermined plant spacing, hole is dug on seedbed ridge surface, white seed is placed in each hole, covered with forest humus, then covered with straw to conserve soil moisture;Seedling emerges, seedbed is cultivated and weeded, leaf is unfolded, and pinching is carried out, and interval seedling is carried out when pinching is carried out.The akebia trifoliata seed seedling method of the application can reduce akebia trifoliata seed disease occurrence, and improve akebia trifoliata seed survival rate.

The invention relates to a biological fermentation agent for peach tree branches as well as a preparation method and a use method of the biological fermentation agent. The fermentation agent comprises a compound microbial enzyme inoculant, a biological source soil conditioner and urea, the volume ratio of the compound microbial enzyme inoculant diluent to the peach tree branch raw material is 1000 L: 1 m < 3 >; the ratio of the biological source soil conditioner to the urea to the compound microbial enzyme inoculant diluent is 1 kg: 5 kg: 1000 L. The biological fermentation agent for the peach tree branches is used for stacking, fermenting and decomposing the peach tree branches. When in use, the biological source soil conditioner, urea and a peach branch material are uniformly mixed in proportion, and meanwhile, the compound microbial enzyme inoculant diluent is sprayed. Through micro-aerobic fermentation, rapid fermentation and decomposition of the peach branches are realized, the obtained peach branch humus and the extract thereof have no inhibition effect on germination of cucumber seeds, the seed germination index is greater than or equal to 85%, and the peach branch humus can be safely returned to the field or used as a culture medium to provide available organic matters and improve soil.

The invention relates to the technical field of ancient site protection, and discloses an environment-friendly material for the surrounding environment of an ancient site and a construction method of the environment-friendly material. Wherein the raw materials comprise, by mass, 1%-2% of rooting powder, 0.5%-0.7% of an insect-resist agent, 13%-17% of an organic fertilizer, 3%-4% of grass seeds and 75%-85% of humus soil. According to the environment-friendly material for the surrounding environment of the historic site and the construction method of the environment-friendly material, the arid region plant sand stabilization principle is utilized, the environment-friendly material is mainly applied to surrounding enclosure of the historic site body and earth surface environment covering construction within the protection range of the surrounding enclosure, and by using the organic materials, environmental ecological restoration is achieved after construction is conducted for a period of time; and the ecological balance around the historic site can be kept for a long time in the future, so that the continuous invasion of natural erosion and man-made destruction to the cultural relics and historic sites is reduced to the greatest extent.

The invention relates to the technical field of gastrodia elata planting, and particularly discloses a high-yield gastrodia elata planting method which comprises the following steps: S1, screening pretreated gastrodia elata; s2, preparing pretreated wood sections subjected to treatments such as punching, dilute acid treatment and enzymolysis; s3, preparing a nutrient solution and performing vacuum soaking on the wood sections to obtain to-be-inoculated wood sections; s4, preparing a culture medium and laying the culture medium in the planting box; s5, spot-placing millettia latifolia, placing the to-be-inoculated wood sections and armillaria mellea, and filling and covering the matrix and humus soil; s6, regulating and controlling the water content of the culture medium; according to the gastrodia elata planting method, by conducting punching and dilute acid enzymolysis treatment on wood sections, early planting and expansion of armillaria mellea are promoted, symbiotic nutrition supply is optimized through accurate nutrition and moisture management, the problems that in traditional planting, armillaria mellea invasion is slow, and nutrition supply is insufficient are effectively solved, and the yield of gastrodia elata is increased. Therefore, high yield of gastrodia elata is realized.

The invention relates to the field of comprehensive treatment of saline-alkali soil, and discloses a method for improving saline-alkali soil and application. The method comprises the following steps: burying a pre-burying agent in soil of soda saline-alkali soil with the water content of 20-35wt%; applying an eluting agent to the soil; after crops are planted, a microbial agent is applied through a drip irrigation system; the eluting agent comprises modified or unmodified polysiloxane, and the surface active agent comprises sulfonate of C5-C20. According to the method, the soda saline-alkali soil is improved by using the specific modifier and the method, so that the salt content and the pH value of the saline-alkali soil are reduced, the soil aggregate structure of the saline-alkali soil is improved, the content of organic components and humus in the soil is increased, the productivity of the soda saline-alkali soil is improved, and the adaptability and the tolerance of crops to adverse environments are enhanced. The improvement period of the saline-alkali soil can be further shortened, the comprehensive cost of large-scale improvement is reduced, and meanwhile the stability of the improvement effect is improved.

The present invention belongs to the technical field of urban landscaping. Provided is a production method for a ryegrass turf. The method comprises the following steps: S1, selecting seeds of annual ryegrass and adding water to soak same for later use, a potassium permanganate solution being added into the water; S2, using humus soil as a substrate, uniformly stirring same, and then using a grass turf cultivation production line to lay same for 10-15 mm in a planting box; S3, uniformly sowing on the substrate the ryegrass seeds prepared in step S1, the sowing amount of the ryegrass seeds being 30-40 g / m2}; S4, using again the grass turf cultivation production line to cover same with humus soil with a thickness of 4-6 mm; and S5, using the grass turf cultivation production line to perform compacting and watering and then maintenance. In the present invention, ryegrass is combined with grass seeds of different species and substrates of different ratios and different varieties are selected for planting ryegrass, and finally the combination of single-species ryegrass and humus soil is selected as the optimal combination for planting, such that addition of fertilizers and nutritional ingredients is not needed, and a turf can be formed within 8-9 days.

The utility model relates to the technical field of contaminated soil treatment, in particular to a mixing reactor for stabilizing treatment of contaminated humus containing heavy metals, which comprises a frame, a stirring barrel and a stirring component, the stirring barrel is arranged on the frame, a feeding cover is hinged to a feeding port at the top of the stirring barrel, and the stirring component is arranged on the frame. The stirring assembly comprises a driving motor, a stirring shaft and a plurality of propeller blades, the stirring shaft extends into the stirring barrel, the stirring shaft and the feeding cover can rotate relatively, all the propeller blades are arranged on the stirring shaft in the axial direction of the stirring shaft, and every two adjacent propeller blades in the axial direction of the stirring shaft are arranged in a mirror image mode; all the propeller blades and the stirring shaft are coaxially arranged in a transmission manner, and the driving motor drives the stirring shaft to rotate. The two adjacent propeller blades in the axial direction of the stirring shaft are arranged in a mirror image mode, a more complex fluid dynamic environment can be formed in the stirring barrel, and the mixing effect between the curing agent and humus containing heavy metal pollution can be enhanced.

The invention belongs to the field of soil raw material processing, and particularly relates to an energy-saving refuse landfill humus and nutrient soil raw material crushing device which comprises a crushing box, a feeding hopper is arranged at the top of the crushing box, and a discharging opening is formed in the bottom of the crushing box; the crushing heat generation mechanism is mounted on the crushing box, is positioned in the crushing box, and is used for crushing the soil raw materials and generating heat in the crushing process so as to balance the temperature of the materials; through a compound gear transmission structure, a first blade is driven to revolve and a second blade is driven to reversely rotate, a multi-dimensional shearing space is formed, the auxiliary effects of a guide plate and a square block are matched, humus soil and nutrient soil ingredients can be efficiently smashed to achieve uniform particle sizes, and material winding or accumulation dead angles can be avoided; meanwhile, passive friction heat generation and heat flow direction are creatively fused, and bidirectional heat convection is constructed by means of fan blades and spiral flow guide grooves, so that the temperature of materials is uniformly maintained, and the temperature layering problem of internal hot and external cold of traditional equipment is solved.

The invention belongs to the technical field of organic fertilizers, and particularly relates to a straw-based biochar composite slow-release fertilizer for saline-alkali soil improvement and a preparation method of the straw-based biochar composite slow-release fertilizer. The preparation method comprises the following steps: (1) uniformly mixing sheep manure and pigeon manure, mixing the mixed manure with crushed corn straw to obtain a total material, inoculating bacillus subtilis, and composting and fermenting to obtain a primary organic matter; (2) fermenting the primary organic matter by using aspergillus niger, trichoderma reesei and saccharomyces cerevisiae to obtain a submerged fermentation organic matter; (3) crushing the submerged fermentation organic matter to prepare particles; the composite coating powder is scattered into the submerged fermentation organic matter, coating is conducted, and the coated organic matter is obtained; and (4) uniformly mixing the coated fermented organic matter, biochar, desulfurized gypsum, humus soil, a water-retaining agent and ammonium dihydrogen phosphate to obtain the straw-based biochar composite slow-release fertilizer for saline-alkali soil improvement. The organic fertilizer can improve the pH value of saline-alkali soil, reduce the salt content and increase the organic matter content.

The invention discloses a method for slope greening soil in an alpine ecologically fragile area, and relates to the technical field of soil improvement. Comprising the following steps: adopting a microbial acclimatization method, and adding highway waste residues, urban household garbage and kitchen waste in an alpine ecologically fragile region in a composite microbial culture process for acclimatization to obtain a compost microbial inoculum suitable for the alpine region; the method comprises the following steps: mixing waste residues of highway construction in the alpine region with urban household garbage and kitchen waste to obtain a compost raw material; the method comprises the following steps: adding a composting fungicide into a composting raw material, then adding a water and fertilizer retention agent and a soil fixing agent, and uniformly stirring to obtain a compost body; covering a pile body with a polymeric membrane material, intermittently supplying air to the pile body for ventilation, and performing aerobic composting to obtain the soil suitable for regreening in the high and cold environment. According to the method, the humus content of a pile body can be increased, the decomposition level meeting the requirement of planting soil in the alpine ecologically fragile area is achieved, the problem of soil loss after vertical slope soil regreening is solved, and in-situ regeneration of the slope soil in the alpine ecologically fragile area and resource utilization of kitchen waste and urban domestic sludge are achieved.

The present application belongs to the technical field of environmental remediation and soil ecological engineering, and particularly relates to a modified iron biochar-humus-sulfate-reducing bacteria (SRB) composite system for realizing efficient immobilization and ecological remediation of cadmium (Cd 2+ ) in heavy metal contaminated soil. The system can enhance the stability of microbial colonies and has the characteristics of physical and biological synergistic passivation, thereby realizing long-term stabilization and ecological remediation of heavy metals.