460 results about "Soil fertility" patented technology

The invention provides a rapid evaluation method and system for the soil fertility level, and relates to the technical field of soil fertility detection.The rapid evaluation method comprises the steps that an original absorbance spectral data curve is obtained by scanning a soil sample, the moisture peak absorbance, the actual peak position wavelength and the moisture synthetic frequency characteristic peak width are extracted, and a spectral data basis is provided; a water-salt optical path coupling factor is calculated, water-salt correction operation is carried out in combination with a volume correction coefficient, a virtual dry soil spectrum data curve is obtained, interference of salt on a water optical path is quantified, and a water background and salt masking are eliminated; constructing a characteristic virtual baseline of the organic matter and the total nitrogen, calculating an integral area to obtain characteristic intensity of the organic matter and the total nitrogen, and providing a physical input variable for quantitative inversion; introducing a water-salt optical path coupling factor to invert the organic matter content and the total nitrogen content, and correcting signal depression caused by salt stress; the effective fertility index is calculated and graded by combining the organic matter content and the total nitrogen content of the soil, and the actual fertilizer supply capacity of the soil is comprehensively evaluated.

The invention relates to the technical field of agricultural intelligent planting, in particular to a crop growth analysis and fertilization optimization method fusing multi-source data, which comprises the following steps: acquiring crop canopy reflectivity data, sunlight perpendicular incidence angle data and a soil fertility index in real time; sunlight perpendicular incidence angle data are analyzed into a daily cumulative effective illumination intensity distribution diagram, a three-dimensional fertility gradient model is constructed in combination with a soil fertility index, canopy reflectivity data are recognized as a growth vigor difference quantization map through a machine learning classifier, the three types of data are fused through a space-time matching algorithm, and the growth vigor difference quantization map is obtained. Generating a correlation mapping matrix which takes a plant individual as a minimum unit and marks an illumination and soil deviation superposition influence coefficient, finally calculating the difference degree of fertilizer requirements of adjacent plants based on the superposition influence coefficient, dividing micro-scale dynamic fertilization partitions, and generating a partition plant variable compensation fertilization prescription map. And the variable fertilizer applicator is driven to execute differentiated fertilization operation, so that the growth analysis accuracy and the fertilizer utilization rate are improved.

The invention discloses a Vinck Cellulomicrobe and application thereof in degradation of corn straw and improvement of soil fertility, and belongs to the field of agricultural microbial technology and solid waste resource utilization. The bacterial strain can secrete a plurality of hydrolase and oxidase including AA10 family lytic polysaccharide monooxygenase, AA2 peroxidase, GH3 and GH1 beta-glucosidase, GH16 / GH17 beta-glucosan endonuclease and AA1 multi-copper oxidase. The bacterial strain has the advantages that the bacterial strain can secrete a plurality of hydrolase and oxidase; fermentation liquor is applied to soil according to the straw mass ratio of 1: 5, and the corn straw degradation rate can be increased under the condition that the mass ratio of soil to straw is 100: 1. Meanwhile, the microbial agent can synergistically improve soil nutrients and increase the contents of rapidly available phosphorus, rapidly available potassium, alkali-hydrolyzable nitrogen, soluble organic carbon and total phosphorus in soil. According to the microbial agent, a straw lignocellulose structure is effectively cracked through a multi-enzyme system synergistic effect, and the dual effects of accelerating straw degradation and improving soil fertility are achieved.

The invention discloses an identification and treatment method for a water and soil loss priority treatment area of a small watershed slope in a hilly area. The method comprises the following steps: calculating a small watershed soil erosion modulus and a sediment connectivity index, and carrying out geospatial modeling to form a soil erosion and connectivity partition identification priority treatment area; determining the land utilization type and terrain status of water and soil loss, and dividing functional zones from the spatial angles of an upper slope, a middle slope and a lower slope; a water and soil conservation forest is built in a forest and grass vegetation area on the slope or an abandoned cultivated land above a reclamation prohibition slope and a water and soil loss treatment area on the barren mountain and slope according to the principle of suitable land and suitable trees, and water and soil loss is prevented and controlled through natural restoration; water and soil loss prevention and control measures of slope land reclamation-hydrological network optimization and node control-grassland soil fixation and fertility increasing are adopted in a slope water and soil loss treatment area below the reclamation forbidding gradient in the slope; the slope bottom is provided with a plant filter belt, a tail end grit chamber and an ecological ditch measure for desilting and pollution reduction; the problem that a water and soil conservation treatment system in a small watershed is low in treatment degree is solved.

The invention discloses a soil conditioner for saline-alkali soil and a preparation method and application thereof, and belongs to the technical field of solid waste resource utilization and soil improvement, the soil conditioner for saline-alkali soil comprises the following raw materials: coal gangue, ardealite and an auxiliary agent, and the mass ratio of the coal gangue to the ardealite to the auxiliary agent is (20-60): (20-60): (10-30). The preparation method comprises the following steps: drying and crushing the raw materials, uniformly mixing, mechanically activating or thermally activating the mixture, and screening to obtain the soil conditioner. According to the invention, the raw materials are subjected to synergistic activation treatment, so that the obtained soil conditioner achieves good effects in the aspects of increasing the content of effective silicon and adsorbing heavy metals, the problem that single performance is prominent and the other performance is obviously insufficient is avoided, and the improvement target of double-effect collaboration is achieved. And the soil conditioner not only can effectively supplement nutrient elements such as silicon in the saline-alkali soil, but also can remarkably adsorb and passivate heavy metals (such as cadmium, nickel, copper, lead and chromium), so that the soil fertility and the environmental safety are improved at the same time. Besides, solid wastes such as the coal gangue and the ardealite are used as main raw materials, so that the method has the advantages of low cost, high resource utilization rate, environmental friendliness and the like, and conforms to the green and sustainable development concept.

The invention relates to the technical field of agricultural cultivation, in particular to a farmland soil ecological structure restoration and soil fertility improvement cultivation method which comprises the steps that 1, the soil state is evaluated; 2, tillage depth is determined; step 3, adding organic materials; 4, tillage operation is carried out, a tillage machine is used for carrying out soil tillage, the tillage depth is the tillage depth determined in the step 2, and the tillage operation adopts a layered tillage mode including shallow tillage and deep tillage; step 5, inoculating a microbial agent, namely inoculating the soil microbial agent based on the soil microbial diversity and the soil enzyme activity in the step 1 after the cultivation operation; 6, covering and maintaining are conducted, after cultivation and inoculation, soil covering and maintaining are conducted, and using of covering materials and precise water and fertilizer management are included. Accurate soil evaluation and personalized tillage depth determination enable soil remediation to be more targeted and effective; organic materials and microorganisms are reasonably matched and used, so that the soil fertility and the biological activity are improved.

The invention discloses bacillus orientalis ZL3 for regulating rhizosphere soil microecosystems of haloxylon ammodendron soil in deserts and promoting the growth of the haloxylon ammodendron soil, particularly relates to a fungicide ZL3 for promoting the growth of haloxylon ammodendron and regulating rhizosphere microbial communities and application of the fungicide ZL3, and belongs to the technical field of microorganisms. According to the bacillus toonensis ZL3 provided by the invention, the conversion of soil nutrients to available nutrients is improved, and the rhizosphere microbial community structure is improved, so that the effect of promoting the growth of haloxylon ammodendron is achieved. When the ZL3 is applied to a haloxylon ammodendron field, the content of soil organic matters, the content of soil quick-acting potassium, the content of available phosphorus and the activity of sucrase are remarkably improved by 37.78%, 11.01%, 49.66% and 67.71% respectively. The plant height is increased by 17.59%, and the root length is increased by 109.45%. Meanwhile, the positive change of microbial communities is regulated and controlled, especially the enrichment of beneficial bacteria, the relative abundance of the prevotella and the vibrio is remarkably increased, and the relative abundance of the burkholderia is remarkably reduced. In general, inoculation of the ZL3 fungicide can promote the growth and development of haloxylon ammodendron by improving the soil fertility and improving the rhizosphere microflora structure.

The invention discloses a seed coating containing an arbuscular mycorrhizal inoculant. The seed coating is prepared from the following components in parts by weight: 25 to 35 parts of the arbuscular mycorrhizal inoculant, 35 to 45 parts of a soil conditioner, 15 to 20 parts of talcum powder and 15 to 20 parts of polyvinyl acetate. The invention further provides a preparation method of the seed coating containing the arbuscular mycorrhizal inoculant and application of the seed coating to reduction of soil heavy metal pollution, increase of disease resistance and stress resistance of crops and promotion of crop growth. The seed coating containing the arbuscular mycorrhizal inoculant wraps the surfaces of plant seeds, provides good nutritional ingredients for growth and development of the seeds, and is beneficial to improving the germination rate of the seeds under heavy metal cadmium stress, reducing soil heavy metal cadmium pollution, improving soil quality, increasing soil fertility and improving disease resistance and stress resistance of crops; growth of seedlings is promoted, and crop quality and yield are improved.

The invention discloses preparation of a microbial compound element-based fertilizer and application of the microbial compound element-based fertilizer in saline-alkali soil treatment, and relates to the technical field of saline-alkali soil improvement. The preparation method comprises the following steps: inoculating lactic acid bacteria, rhodopseudomonas, phosphate-solubilizing bacillus, nitrogen-fixing bacillus, halophilic bacillus and halomonas into a composite culture medium in proportion, and carrying out stepped sequential fermentation culture under the conditions that the pH value is 7.5 and the temperature is 28 DEG C until the bacterial count is greater than or equal to 1010 CFU / mL. According to the preparation of the fertilizer based on the microbial compound elements and the application of saline-alkali soil treatment, a synergistic system of the compound functional flora, the chelated mineral substances and the intelligent organic carrier is constructed, so that multi-dimensional improvement of saline-alkali soil is realized, the limitation of a traditional single improvement mode is broken through, the salinity and pH value of the soil are effectively reduced, and the soil quality is improved. The soil fertility and biological activity are remarkably improved, the salt stress resistance of crops is enhanced, the effective period is prolonged, and the preparation cost is low.

The invention discloses a method for improving soil fertility of an orchard in a Yellow River old lane area. The orchard is covered with green grass; after the fruits are harvested and before leaves fall, a first fertilization ditch is dug at a crown water drip, and smashed straw, base fertilizer and surface soil are sequentially laid in the first fertilization ditch from bottom to top; meanwhile, digging 3-4 radial second fertilization ditches according to a water drip from a trunk to a crown, sequentially laying dry branches and fallen leaves, wheat straws and livestock and poultry manure in the second fertilization ditches from bottom to top, and putting earthworms into surface straws of the second fertilization ditches; a humic acid-containing water-soluble fertilizer is applied in a drip irrigation manner during topdressing. Therefore, through the synergistic effect of multiple technical measures such as orchard grass covering, organic fertilizer layer application, earthworm density increasing and bio-fertilizer application increasing, a benign soil ecological system is constructed, and therefore the problems that the content of organic matter in orchard soil in the Yellow River old road area is low, and the water and fertilizer retention capacity is weak are effectively solved, the soil fertility is remarkably improved, and the yield of the orchard is increased. And the fruit yield and quality are improved.

The present application belongs to the technical field of biochar oxygen-releasing materials, and particularly relates to a carbon-based calcium peroxide material with oxygen-releasing function, a preparation method and application thereof. Silicon-rich agricultural waste is converted into biochar through controllable pyrolysis, the pore structure of the biochar is regulated, mesoporous biochar is prepared, the mesoporous biochar is modified by phosphates to prepare phosphorus-rich biochar, and finally, the phosphorus-rich biochar is combined with calcium peroxide to obtain the carbon-based calcium peroxide material with oxygen-releasing function. The material has excellent oxygen-releasing performance and can continuously and stably release oxygen into the soil. Meanwhile, the phosphorus-rich biochar can also provide phosphorus nutrients to promote the growth of rice. The material can be widely applied to the improvement of gleyed paddy fields, effectively solves the problem of soil oxygen deficiency, improves soil fertility and rice yield, and has the characteristics of environmental protection, economy and high efficiency.

The invention discloses a salt-alkali-tolerant growth-promoting ectopseudomonas DHS-HJ-IAA-2 strain and an application thereof, and belongs to the technical field of microorganisms. According to the invention, a strain of salt-resistant, alkali-resistant and drought-resistant pseudomonas sp. DHS-HJ-IAA-2 is screened, and the pseudomonas sp. DHS-HJ-IAA-2 is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCC No.36164. Experimental results show that the ectopseudomonas DHS-HJ-IAA-2 has the functions of producing IAA, fixing nitrogen, dissolving potassium, degrading cellulose and lignin, inhibiting phytopathogen and the like, and can remarkably improve the bacteria abundance of saline-alkali soil, improve soil fertility and promote plant growth in a saline-alkali environment. The invention provides a new strain resource and a technical means for improving saline-alkali soil and planting crops on the saline-alkali soil, and realizes improvement of the saline-alkali soil from two aspects of soil-crop-microorganism comprehensive action and microorganism-plant synergistic action.

The invention provides an astragalus mongholicus residue biochar-loaded microbial inoculant and a preparation method and application thereof.The preparation method comprises the steps that an Enterobacter mori XJ 10 inoculant is cultured firstly, then modified biochar is obtained through high-temperature pyrolysis of astragalus mongholicus residues and modification of industrial brown sugar, the modified biochar and the astragalus mongholicus residues are mixed according to the proportion, oscillated adsorption and vacuum drying are conducted, and the biochar-loaded functional inoculant is obtained. When the Cd-Pb composite contaminated soil is remediated by applying the microbial inoculum and the king grass cooperatively, compared with a contaminated control group (CK-2), the plant height, the stem diameter and the biomass of the king grass are increased by about 119.3%, 116.7% and 53.8% respectively, and the biomass is 9.8% higher than that of original soil (CK-1); ammonium nitrogen, nitrate nitrogen, available phosphorus and quick-acting potassium in the soil are increased by 255%, 892.6%, 203.5% and 301.6% respectively; and the Cd removal rate and the Pb removal rate are respectively increased by about 24.5% and 24.3%. Resource utilization of the radix astragali residues is achieved, a'charcoal-fungicide-king grass' synergistic system breaks through the limitation of a single remediation technology, pollution remediation and soil fertility improvement are both considered, and the method has the advantages of being low in cost, efficient and sustainable.

The invention relates to the technical field of biology, and particularly discloses bacillus megaterium LLH-B2 and application thereof. The invention relates to bacillus megaterium LLH-B2, which is preserved in China Center for Type Culture Collection in Wuhan University, Wuhan, China on November 14, 2022, and is named as bacillus megaterium LLH-B2, and the preservation number is CCTCC NO: M 20221787. The bacillus megaterium LLH-B2 is named as bacillus megaterium LLH-B2. The bacillus megaterium LLH-B2 can stably survive for a long time in a sandy soil drought environment, heavy metal treatment of sandy soil is efficiently treated, meanwhile, the soil fertility is improved, and plant growth is promoted.

The invention provides a double-cropping rice field annual rotation fertility dynamic monitoring system based on the Internet of Things, and relates to the technical field of fertility monitoring, and the system comprises a sensing collection module which is used for collecting soil fertility under the annual scale, and synchronously recording double-cropping rice growth indexes and rotation management information; the data processing module is used for preprocessing the multi-dimensional original monitoring data flow and generating a structured data packet; the trend prediction module is used for predicting fertility change through a Prophet algorithm; and the scheme optimization module is used for constructing a fertility regulation and control model and generating an optimized fertility regulation and control scheme. According to the method, the Prophet algorithm is used for feature extraction and model training, so that accurate pre-judgment and early warning of fertility change are realized; the fertility regulation and control rule base is constructed based on the prediction result and the rotation tillage characteristics, personalized regulation and control schemes are generated according to the risk levels of different field parcels, the scheme effect is optimized through historical scene verification, and the pertinence and the implementation effect of fertility regulation and control are effectively improved.

The invention discloses an intelligent crop growth cycle management method and system, and the method comprises the steps: dividing dynamic monitoring grids based on the farmland terrain, laying monitoring points at the vertexes of each grid, and collecting the soil fertility and environment data; and generating a full farmland soil fertility index matrix through a spatial interpolation algorithm. Inputting the matrix, the environment data and the crop growth period parameters into a pre-training model, and outputting growth abnormality risk areas and types; driving the unmanned aerial vehicle to get close to the abnormal area to obtain a high-definition image, analyzing the disease and pest or nutrition deficiency symptom through an image recognition model, and generating an illness state verification result; and calling a farming operation knowledge base according to a verification result, and generating and executing a targeted operation instruction containing a fertilization / pesticide application scheme. According to the method, the spatial representation precision of the soil fertility is improved through dynamic gridding monitoring and interpolation, the crop risk is predicted in combination with multi-source data fusion, accurate pathology recognition is realized by utilizing targeted verification of the unmanned aerial vehicle, and the utilization efficiency of agricultural resources and the pest control precision are remarkably improved.

The invention relates to the technical field of soil improvement and ecological restoration, and discloses an ultra-stable mineralization in-situ salt fixation method for improvement of saline-alkali soil in an arid region and application of the ultra-stable mineralization in-situ salt fixation method. The invention provides a method for improving northwest inland saline-alkali soil based on combination of an ultra-stable mineralized in-situ salt-fixing soil conditioner, precise partitioning, biological improvement and salt-tolerant plant planting. According to the method, a salt elimination foundation is created through physical soil preparation, firstly, the soil alkalization degree and the salt content are rapidly reduced through an ultra-stable mineralization in-situ salt fixation soil conditioner, the physical structure of the soil is improved, and then rapid salt elimination and alkali inhibition, fertility cultivation and ecological reconstruction of the saline-alkali soil are finally achieved by constructing different plant planting modes and establishing a stable vegetation system. And a sustainable saline-alkali soil comprehensive treatment mode with good effect and low cost is formed.

The invention discloses a carbon enzyme polypeptide water-soluble fertilizer and a preparation method thereof, and the water-soluble fertilizer is prepared from the following raw material components in parts by weight: 160-220 parts of urea crystal, 45-60 parts of polymeric carbon enzyme, 40-60 parts of potassium carbonate, 10-30 parts of polypeptide amino acid, 50-70 parts of pine pollen, 10-40 parts of trace elements, 30-60 parts of charcoal, 60-80 parts of modified ground phosphate rock, 2-6 parts of coenzyme and 30-80 parts of chitosan-humic acid slow-release copper fertilizer. According to the fertilizer synergist disclosed by the invention, the peat soil is added, so that the content of humus is greatly increased, the fertilizer synergist has a very good promoting effect on improving the soil fertility and improving the physical and chemical properties of soil after being applied, and meanwhile, the addition of various beneficial microbial agents can assist plant root systems to absorb the fertilizer, can fully release fertilizer nutrients, and improves the use effect of the fertilizer; therefore, growth of plant roots is promoted, and crop yield is increased.

The invention provides a method for constructing a soil fertility index comprehensive evaluation model based on multiple soil indexes, and the method comprises the steps: (1) collecting soil sample image data of different regions, and carrying out the preprocessing of the data, so as to obtain a panoramic looking-around soil profile hyperspectral image; (2) extracting soil sample data and standard reflectivity plate data; (3) carrying out radiation correction and preprocessing on the soil sample data and the standard reflectivity plate data; (4) carrying out characteristic wavelength extraction on the spectral reflectivity data of the soil samples at different depths; (5) respectively measuring parameter data of the soil samples at different depths; (6) constructing a multi-parameter inversion model under different depths; (7) establishing a soil fertility comprehensive evaluation model; and (8) obtaining color distribution diagrams of different soil parameters and soil fertility indexes. According to the method, the spectrum data of the soil profiles at different depths can be quickly acquired in a low-loss manner, so that the soil index data is inverted, and the soil fertility evaluation efficiency is greatly improved.

The invention provides an ecological restoration method for backfilling dehydrated slime into a bauxite goaf, which comprises the following steps of: backfilling filtered and dehydrated slime into the goaf, and covering soil; and then land leveling, slope treatment, soil improvement, irrigation and drainage engineering, field road construction, farmland protection, ecological environment protection, science and technology supporting service and other processes are carried out. Organic fertilizers (such as pig manure and chicken manure) and a biological silicon fertilizer are added on the basis of an inorganic fertilizer, so that the physical and chemical properties of soil are more effectively improved, and meanwhile, the risk of heavy metals in the soil is reduced; by implementing a terraced field slope descending measure in the goaf, the land is smoother, water and soil loss is effectively prevented, the soil fertility is kept, the repaired land can be returned to farmers for planting common crops such as corn, peanuts and cassava, the income of the farmers can be increased, and local agricultural development can be promoted.

The invention discloses a domestic sewage ecological recycling device based on soil infiltration, and relates to the technical field of sewage recycling, a recycling transfer box for transferring sewage is mounted in a small wetland box, and an upper lifting plate for controlling the height of an infiltration level control plate is mounted on the outer side of the small wetland box; the sewage treatment device has the advantages that sewage is purified through soil, microorganisms and the like in the small wetland box, so that the effluent quality reaches a relatively high standard, the infiltration layer control plate can be driven to move up and down by operating the lifting plate on the outer side of the small wetland box, the infiltration layer control plate can be driven to move up and down, and the water quality is improved. Sewage can be distributed to different soil layers according to needs, the fertile degree of soil is improved, after the percolation layer control plate is adjusted to the target height, the layer fixing plate can ensure that the percolation layer control plate is stabilized at the set height, the percolation layer control plate can be guided to the designated soil layer according to needs, and recycling of water resources is achieved.

The invention discloses a method for repairing alkaline cadmium-polluted farmland in arid and semi-arid regions and application of the method, and belongs to the technical field of soil repairing. According to the method, the alkaline cadmium polluted farmland soil in the arid and semi-arid areas is subjected to deep ploughing treatment, and organic materials are applied to improve the soil fertility and the environment and health quality. On the basis, an intercropping planting system suitable for the arid and semi-arid land area is constructed, low-cadmium-accumulation grain crops and high-cadmium-accumulation plants are reasonably selected according to the ecological conditions and crop characteristics of the area, and an intercropping combination of low-absorption grain crops and enriched economic crop plants is formed. According to the system, organic unification of source reduction of heavy metal pollution in soil, pollution control in the planting process and continuous and safe utilization of the farmland is achieved, the dual goals of pollution remediation and farmland production are taken into account, and pollution reduction and collaborative improvement of economic benefits are achieved; and a feasible technical path is provided for ecological restoration of alkaline heavy metal polluted farmlands in arid and semi-arid regions.

This invention belongs to the field of microbial technology, specifically relating to a compound microbial fertilizer that synergistically regulates rhizosphere flora and nitrogen metabolism genes and its application. The microbial agent includes: Bacillus belye (… Bacillus velezensis ), Bacillus subtilis subsp. subtilis ( Bacillus subtilis subsp. subtilis ) and Linyi Streptomyces ( Streptomyces linyiensis Two or three of the following. The microbial agent provided by this invention has significant growth-promoting and nitrogen-fixing effects when applied to crops. It can maintain or even improve soil fertility and crop yield under the condition of reducing nitrogen fertilizer application by 30%, providing a green and efficient new solution for the implementation of "nitrogen reduction and efficiency enhancement".

The invention discloses a one-film six-row wide-narrow-row close-planting staggered planting method for cotton, which comprises the following steps: measuring the soil nutrient content of a region to be planted, calculating the comprehensive score of soil fertility, selecting a basic plant spacing according to the tillering coefficient of a cotton variety, fitting an accumulated temperature correction function, calculating a predicted value of the tillering rate, and calculating a dynamic offset in combination with the latitude of a planting field. Determining a narrow row spacing and a sowing depth according to the dynamic offset, extracting a growth picture of the same variety of cotton in the same region after the flowering and boll-setting period, extracting a planting row spacing mean value of the canopy coverage in a preset range as a wide row spacing, planting cotton according to the basic plant spacing, the narrow row spacing, the wide row spacing and the sowing depth, and monitoring the canopy photosynthetically active radiation in real time. And dynamically regulating and controlling a drip irrigation fertilization strategy according to the photosynthetically active radiation of the canopy. By means of the method, the photosynthetic efficiency, the water and fertilizer utilization efficiency and the stress resistance of cotton groups can be improved, a brand new technical path is provided for high-yield and high-quality cultivation of cotton, and the method has important significance in promoting intelligent transformation of the cotton planting industry.

The invention belongs to the technical field of microorganisms, and particularly relates to a composite microbial fertilizer capable of cooperatively regulating rhizosphere flora and nitrogen metabolism genes and application of the composite microbial fertilizer, and the microbial agent comprises two or three of bacillus velezensis, bacillus subtilis subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. When the microbial agent provided by the invention is applied to crops, the microbial agent has remarkable growth promotion and nitrogen fixation synergistic effects, can maintain and even improve soil fertility and crop yield under the condition of reducing application of a nitrogen fertilizer by 30%, and provides a green and efficient new solution for implementation of nitrogen reduction and synergistic effects.

The invention relates to the technical field of orchard planting and soil fertilization management, and discloses a mango orchard ecological fertilization planting method with root zone annular drip covering and inter-row pasture mixed sowing, which comprises the following steps: field foundation pretreatment: field shallow rotation no-tillage, ecological ditch digging and biological herbicide spraying; paving a domain composite covering layer constructed by root domain composite covering and intelligent drip irrigation, clamping a drip irrigation ring, and controlling drip irrigation by a sensor; mixed sowing of the ternary pasture between the rows in the rainy season is conducted, and the ternary pasture is cut and utilized in good time; after composting the mushroom dregs, the mushroom dregs of the double-microbial-agent synergistic compost, the straws and the trimmed mango tree branches and leaves, adding double microbial agents of bacillus subtilis powder and trichoderma powder, and precisely fertilizing; and precise fertilization, ecological disease prevention and control and field maintenance: irrigating roots with trichoderma in a flowering period, and maintaining drip irrigation and a covering layer. According to the mango garden ecological fertilizing planting method with root domain annular dripping covering and inter-row pasture mixed sowing, the soil fertility can be improved, diseases can be prevented, and the quality and yield of mangoes can be improved.

The utility model discloses a scattered household black water treatment and resource utilization device which comprises an anaerobic fermentation tank, an aerobic nitrification tank, a denitrification nitrogen removal tank, a biological aerated filter, a cascade artificial wetland and a water storage tank which are sequentially communicated, a discharging device for discharging biological fertilizer is arranged on one side of the bottom of the anaerobic fermentation tank, and a water outlet higher than the discharging device is formed in one side of the anaerobic fermentation tank. According to the technical scheme provided by the utility model, germs, parasitic ova and the like are killed through anaerobic fermentation, meanwhile, high-quality organic fertilizer can be generated, then the technologies of aerobiotic treatment, anoxic treatment, biofilter treatment, constructed wetland treatment and the like are combined, pollutants in black water are further degraded, the quality of effluent water is improved, and the effluent water is reused for irrigation of vegetable fields, farmlands, forest lands and the like. And the organic fertilizer is recycled to the farmland to improve the soil fertility, so that the effective treatment and resource cyclic utilization of the black water of the scattered households are realized.

The invention discloses a charcoal-based composite material as well as a preparation method and application thereof, and belongs to the technical field of soil improvement. The preparation method comprises the following steps: modifying rice straw with calcium lignosulphonate, carbonizing to obtain biochar, and co-fermenting with calcium lignosulphonate, rice straw, EM engineering bacteria and urea to obtain the biochar-based composite material. When in use, the charcoal-based composite material is uniformly spread on the surface of acidified soil, ploughing and mixing are performed, irrigation and mulching film covering are performed, and crops can be planted 30-120 days later. When the biochar-based composite material is used for soil improvement, the pH value of acidified soil can be remarkably increased, the non-uniform acidification characteristic of the soil is improved, the physical property and the soil fertility are improved, and the biochar-based composite material has the advantages of being low in remediation cost and free of chemical components and can provide technical support for guaranteeing cultivated land health and promoting ecological agriculture development.

The present application belongs to the technical field of microorganisms, and relates to a Pseudomonas jessenii JY2025 and application thereof. Pseudomonas piscicola The biological preservation number of the Pseudomonas jessenii (P. jessenii) JY2025 is CGMCC No. 37283. The strain provided by the present application has broad-spectrum antifungal activity, can significantly inhibit the growth of various plant pathogenic fungi, and has the abilities of salt and alkali tolerance, inorganic phosphorus degradation, protease secretion, siderophore secretion and indole acetic acid production, which are helpful to promote crop growth and improve soil fertility.