911 results about "Soil conditioner" patented technology

The invention discloses a potassium fulvate chelated macroelement water-soluble fertilizer with stress resistance and growth promotion functions, and relates to the technical field of water-soluble fertilizers, the potassium fulvate chelated macroelement water-soluble fertilizer comprises the following raw materials by weight: 167-210 parts of mineral source potassium fulvate, 450-460 parts of potassium nitrate, 300-310 parts of urea, 150-160 parts of potassium dihydrogen phosphate, 30-40 parts of potassium sulfate, 15-25 parts of EDTA-disodium, and 5-15 parts of citric acid. 0.5 to 1.5 parts of brassinolide and 4 to 6 parts of polyaspartic acid; according to the potassium fulvate chelated macroelement water-soluble fertilizer with the stress-resistant and growth-promoting functions, through chelation cooperation of potassium fulvate and nitrogen, phosphorus and potassium, the solubility of the chelated phosphorus element in water is increased, and the chelated phosphorus element can be more uniformly distributed in soil; by adopting an EDTA-disodium and citric acid composite chelating system, volatilization and loss of nitrogen elements are reduced, the problem of precipitation of calcium, magnesium and phosphorus is solved, and the soil conditioner is suitable for hard water areas and especially has outstanding performance in saline-alkali soil and arid areas.

The invention belongs to the technical field of soil improvement, and discloses a preparation method of a humic acid biochar saline-alkali soil conditioner. The preparation method comprises the following steps: by taking waste edible fungus chaff as a raw material, activating the waste edible fungus chaff with a KOH solution, pyrolyzing the waste edible fungus chaff under a limited oxygen condition to obtain fungus chaff-based biochar with a porous structure, mixing the fungus chaff-based biochar with humic acid, a sodion replacement material (desulfurized gypsum powder and / or calcium chloride) and purified water according to a certain mass ratio, and drying and fixing at medium temperature to obtain the modifier. According to the modifier, the porous adsorption performance of the biochar, the pH adjustment and agglomeration improvement functions of the humic acid and the sodium ion replacement capacity of the calcium source material are comprehensively exerted, the sodium ion content in the saline-alkali soil is synergistically reduced, and the soil agglomeration structure and the water and fertilizer retention capacity are improved. The prepared modifier is especially suitable for soil treatment of moderate and severe saline-alkali soil in which the ratio of sodium ions to exchangeable cations exceeds 10%, and has agricultural waste resource utilization and ecological restoration values.

The invention relates to the technical field of soil remediation, in particular to a biochar-humic acid-calcium alginic acid composite saline-alkali soil modifier and a preparation and application method thereof. The modifier adopts a multi-layer structure design: biochar is pre-adsorbed by calcium chloride, compounded with sodium humate, and then crosslinked with sodium alginate to form a gel to form a composite inner core; secondly, sulfobetaine methacrylate and vinyl phosphonic acid are introduced into a sodium alginate molecular chain through graft polymerization, and modified sodium alginate is obtained to serve as an outer layer coating material; and finally, dipping the composite inner core into the outer layer solution, and carrying out graded recalcification by calcium chloride and short-time treatment by sodium sulfate to obtain a final product. Through the synergistic effect of calcium ion slow release of the inner core and zwitterionic characteristics of the outer layer, efficient replacement and long-term stable regulation and control of soil sodium ions are achieved, the pH value, the conductivity and the alkalization degree of soil are remarkably reduced, the water holding capacity is effectively improved, and the soil conditioner is suitable for sustainable improvement of moderate and severe saline-alkali soil.

A soil conditioner system includes a bit body. A first buffer bit and a second buffer bit may be mounted in a back-to-back configuration on the bit body. The first buffer bit and the second buffer bit may be mounted in respective recesses formed in the bit body on opposite sides of the bit body. The bit body includes a mounting surface at a second end of the bit body that is used to rigidly couple the bit body with a horizontally rotatable member such that the bit body extends transversely away from an outer surface of the horizontally rotatable member. The bit body includes a first side and a second side disposed on opposing sides of the bit body to face opposite directions of horizontal rotation of the horizontally rotatable member. The first and second sides are positioned between the mounting surface and the first buffer bit and the second buffer bit, respectively.

The invention discloses a multifunctional talaromyces sp. Fungus RB-2 for preventing and controlling ginger stem rot and application of the multifunctional talaromyces sp. Fungus RB-2, and belongs to the technical field of microorganisms. The talaromyces sp. Fungus RB-2 is preserved in the China Center for Type Culture Collection, the preservation number of the talaromyces sp. Fungus RB-2 is CCTCC NO: M 20251722, and the preservation date of the talaromyces sp. Fungus RB-2 is July 28, 2025. The talaromyces sp. Strain RB-2 with the effect of inhibiting the growth of pathogenic bacteria is separated and purified, and the strain RB-2 has remarkable antagonistic activity on ginger stem rot pathogenic bacterium group pythium aphanidermatum and various economic crop pathogenic bacteria and has the potential of being developed into a biocontrol inoculant. The talaromyces sp. Strain RB-2 also has phosphorus dissolving and growth promoting capabilities, can remarkably promote the growth of ginger, and has the potential of preparing a soil conditioner and a microbial fertilizer, so that the micro-ecology of soil is improved, and the productivity of crops is enhanced.

The invention provides a soil conditioner for improving soil hardening and a preparation method thereof, and relates to the technical field of soil conditioning. The soil conditioner is prepared by combining nano silicon dioxide, a straw retting material, a straw composite fermentation material, biochar, a water-retaining agent and modified starch. The straw composite fermented material is prepared by the following steps: crushing straws, mixing with sweet water, stirring, drying, carrying out microwave treatment, mixing with bacillus thuringiensis, fermenting, sterilizing, subsequently adding a composite microbial agent of bacillus subtilis, trichoderma and bacillus mucilaginosus, continuously fermenting, and drying. The modified starch is prepared by semi-gelatinizing corn starch and then carrying out microwave drying and shaping. According to the present invention, the defects in the prior art are overcome, the soil hardening phenomenon can be rapidly improved with the small addition amount, the soil porosity is increased, the activity and the diversity of the soil microorganisms are ensured, and the soil fertility is improved.

The invention belongs to the field of preparation of soil conditioners, and particularly relates to a soil loosening and root promoting soil conditioner and a preparation method thereof. A polymer formed by vinyltriethoxysilane, polyacrylic acid and coumarin under the catalytic action of citric acid is mixed with porous powder obtained after crushing and nutrient organic matter, and freeze-drying is performed to obtain the soil-loosening improved fermentation substrate which can be slowly released in soil; polyaspartic acid and acetylchitosamine are cross-linked under the catalytic action of N-hydroxysuccinimide, root-promoting nutrition powder and auxiliary root-promoting components are mixed, and the obtained composite root-promoting agent can significantly promote the growth of plant root systems; a porous structure contained in the protective stability maintaining agent can provide a relatively stable microenvironment for effective components, and the soil loosening and root promoting agent is mixed with the soil loosening and improving fermentation substrate and the composite root promoting agent, so that the prepared soil loosening and root promoting soil conditioner is remarkable in soil loosening and root promoting effect, long-acting and stable, small in dosage, obvious in effect and stable in conditioning effect after being stored.

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 a soil conditioner based on nitrification inhibition and a soil acid control method, and belongs to the technical field of soil conditioning, the soil conditioner comprises the following components by weight: 20-22 parts of humic acid, 32-36 parts of syringic acid-linoleic acid modified porous hydroxyapatite, 4-5 parts of complete nitrifying bacteria, 2-5 parts of syringic acid, and 2.8-4.2 parts of sodium carboxymethyl cellulose. According to the technical scheme, syringic acid and linoleic acid serve as nitrification inhibitors, the nitrification inhibition rate can be effectively increased, ecological niches of ammonia-oxidizing archaea and ammonia-oxidizing bacteria can be reduced through competitive occupation due to addition of complete nitrifying bacteria, the nitrification rate of the ammonia-oxidizing archaea and the ammonia-oxidizing bacteria is inhibited, and N2O emission is reduced. Humic acid and hydroxyapatite can be used as pH buffer substances to regulate and control soil acidity, aluminum toxicity can be relieved, and physical and chemical properties of soil can be improved; meanwhile, the complete nitrifying bacteria can be ensured to have relatively high activity under the condition that the pH is 5.5-6.5.

The invention belongs to the technical field of soil improvement, and relates to a soil conditioner for improving sandy soil structure and a preparation method thereof, and the preparation method specifically comprises the following steps: preparing activated humic acid, preparing a nano mineral material, preparing modified biochar, constructing biochar composite gel, and preparing konjac glucomannan-sodium alginate water-retaining colloid. Mixing the biochar composite gel, the water-retaining colloid and the slow-release fertilizer, granulating and the like. Through a ternary synergistic system of the biochar composite gel, the water-retaining colloid and the slow-release fertilizer, the functional singleness is broken through, the structure-water retention-fertilizer supply integration is realized, and the problems that an existing sandy soil conditioner is single in function, poor in component synergism, weak in environmental adaptability, insufficient in long-term effect and the like are solved.

A carbon capture and storage (CCS) material may be synthesized using a wide variety of feedstock from agricultural, forestry, and sanitary wastes. The feedstock is heated under a reaction medium. After adding a solution of an activating alkali metal compound to the feedstock, the feedstock and activating alkali metal compound are heated under flowing gases to form the CCS material. This CCS material may be used and regenerated multiple times, then used as a soil amendment.

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 provides a method for repairing degraded moso bamboo forest soil. The method comprises the following steps: selecting a degraded moso bamboo forest; the moso bamboo forest is divided into a plurality of strip-shaped areas according to a high-density-low-density classification mode, and high-density areas and low-density areas which are distributed alternately are formed; the moso bamboo forest is subjected to strip-shaped thinning treatment, strip-shaped areas are divided according to a high-density-low-density classification mode, and moso bamboos of different growth ages are subjected to thinning according to a certain proportion; performing soil preparation treatment on the moso bamboo forest after thinning; planting nitrogen-fixing plants in the soil under the moso bamboo forest; and treating the soil under the moso bamboo forest by using a soil conditioner. According to the method for restoring the degraded moso bamboo forest soil, arbor layer-under-forest-soil integrated restoration is achieved, systematic improvement is conducted on multiple links of thinning, nitrogen fixation and fertilization, the content of N in the soil and the content of organic matter in the soil are increased, and the diameter at breast height of new bamboo is increased.

The invention provides an organic-inorganic-microbial composite water and fertilizer retention soil conditioner and a preparation method thereof. The organic-inorganic-microbial composite water and fertilizer retention soil conditioner comprises an organic material, a microbial agent and composite phosphate fertilizer slow-release carboxylated modified hydrogel microbeads (inorganic material), the compound phosphate fertilizer slow-release carboxylated modified hydrogel microbeads are mixed with organic materials such as humic acid and a microbial agent, so that the phosphorus slow-release effect and the soil water absorption and retention effect are further improved, and the compound phosphate fertilizer slow-release hydrogel microbeads have high water absorption and retention and fertilizer slow-release functions, can effectively improve soil, increase the soil water retention and phosphate fertilizer effectiveness, improve the enzyme activity of the soil and improve the fertilizer utilization rate. Soil moisture and fertility loss is reduced; the raw materials are wide in source, low in cost, safe and harmless, the preparation process is simple, and the prepared soil conditioner is harmless to the soil environment, has high water absorption and water retention and a fertilizer slow release function, can effectively improve soil and can be used for enhancing the water retention and physicochemical properties of the soil.

The invention discloses an abandoned mining area vegetation recovery method based on a community succession law, and belongs to the field of abandoned mining area vegetation recovery. Comprising the steps of initial environment data intelligent collection and soil stress evaluation, succession pioneer community big data intelligent screening and matching, multilevel planting scheme optimization based on a self-adaptive genetic algorithm, intelligent soil improvement agent directional putting and whole-process dynamic monitoring and self-adaptive feedback regulation and control. Multi-dimensional environment data are obtained through means such as remote sensing and a sensing network, local dominant species are recommended and configured in a partitioned and staged mode by applying intelligent models such as multi-factor stress clustering, collaborative interaction succession adaptation and a genetic algorithm, and soil microorganism interaction is combined to optimize recovery measures. Vegetation and soil evolution is monitored in real time, dynamic adjustment and optimal succession driving are achieved, and scientificity, efficiency and sustainability of ecological restoration of the abandoned mining area are effectively improved.

The invention relates to the technical field of soil amendments, in particular to a soil amendment containing earthworm enzymatic hydrolysate and a preparation method of the soil amendment. The soil conditioner containing the earthworm enzymatic hydrolysate comprises the following components: earthworm enzymatic hydrolysate microcapsules and adjuvant particles in a mass ratio of (2-4): 1, the earthworm enzymatic hydrolysate is prepared by performing enzymolysis on fresh earthworm homogenate by compound enzyme, and the compound enzyme comprises cellulase and protease; the wall material of the earthworm enzymatic hydrolysate microcapsule comprises at least one of chitosan, calcium alginate, gelatin and Arabic gum; the auxiliary agent comprises humic acid and inorganic natural minerals. According to the soil conditioner containing the earthworm enzymatic hydrolysate, the earthworm enzymatic hydrolysate is wrapped by the microcapsules, the retention rate of active ingredients in the earthworm enzymatic hydrolysate can be remarkably increased, and the soil condition can be further improved by matching with humic acid and inorganic natural minerals for use.

The invention relates to a method for preparing an acidified soil conditioner by using dolomite waste residues, which belongs to the technical field of soil conditioners, and specifically comprises the following steps: mixing activated dolomite, mineral source humic acid, a macromolecular adhesive and a fermented organic matter in a ratio of 1: 0.4: 0.001: 0.75; the acidified soil conditioner can be obtained by uniformly mixing the components, and the prepared acidified soil conditioner can remarkably improve the pH of acidified soil and increase soil nutrients so as to improve the crop yield, and can realize resource utilization of dolomite.

The invention relates to a composite microbial fertilizer with a saline-alkali soil improvement effect and a preparation method thereof, and belongs to the technical field of microbial fertilizer preparation, the fertilizer comprises the following raw materials by mass: 10-30 parts of modified charcoal, 5-8 parts of a microbial agent, 30-50 parts of an inorganic fertilizer, 10-20 parts of a soil improvement agent and 3-5 parts of other auxiliary agents; wherein the modified biochar is obtained by performing segmented heat treatment modification on animal husbandry wastes; the microbial agent is obtained by immobilizing compound microorganisms by using sodium alginate gel reinforced by a mineral filler and micron-sized charcoal powder. The prepared fertilizer has the effects of improving crop quality and crop yield and improving saline-alkali soil.

The invention relates to the field of soil remediation, in particular to an efficient remediation agent for acid soil and a preparation method of the efficient remediation agent. The repairing agent is composed of hydroxyapatite modified biochar, an MOF biochar compound and lime. Compared with the prior art, the hydroxyapatite modified biochar and MOF biochar compound not only can regulate the soil acidity, but also can provide rich nutrient elements and improve the soil structure, and the lime can quickly neutralize hydrogen ions in acid soil and quickly increase the pH value of the soil, so that the remediation agent can improve the soil acidity within a short time, and the remediation effect is good. And meanwhile, short-term and long-term repairing effects are considered. The preparation raw materials of the biochar comprise agricultural wastes such as cow dung, the source is wide, the cost is relatively low, and the resource utilization of the wastes is realized. Lime is also a common soil conditioner, and is relatively low in price and easy to obtain, so that the production cost of the whole repairing agent is reduced, and the economic feasibility and the application range of the repairing agent are improved.

The invention relates to the technical field of organic fertilizers, in particular to a special fruit-promoting and quality-improving organic fertilizer for camellia oleifera trees and a preparation process thereof, and the special fruit-promoting and quality-improving organic fertilizer is prepared from the following raw materials: composted chicken manure, camellia oleifera shell powder, fulvic acid, chitosan oligosaccharide, double-layer coated slow-release particles, a soil conditioner, a microbial agent and zinc sulfate. After the potassium feldspar powder is activated by citric acid, the effectiveness of potassium is remarkably improved, and the inner layer modified whey protein film preferentially obstructs water contact and delays the release of potassium in the initial stage, so that the problem of excessive growth of branches and leaves is avoided; the outer polyethylene glycol-glycerol copolymer film has a temperature-sensitive characteristic, can respond to soil humidity and temperature changes, is gradually degraded and accelerates potassium release, so that the high-potassium requirement in a grease synthesis critical period is met; the double-film barrier structure effectively reduces early loss of potassium, ensures continuous potassium supply in later fruit expansion and grease accumulation stages, and remarkably reduces the risk of fruit drop caused by insufficient potassium.

The invention discloses a treatment method of heavy metal stabilized red mud based on multielement solid waste synergy and application of the treatment method. According to the method, four solid wastes including coal mine area soil, vinasse, acidic biochar and garden soil are adopted as stabilizers, the water extraction state content of the heavy metals in the red mud is reduced in a multi-element combined adding mode, simultaneous stabilization of multiple heavy metals in the red mud is achieved, and the highest reduction rate reaches 99.0%. Harmless treatment of the red mud and resource utilization of solid waste such as coal mine area soil, vinasse, acidic charcoal and garden soil are achieved, and the method has the advantage of treating waste with waste. The method is easy to operate, low in cost, free of complex equipment and easy to industrially popularize and apply. The treated red mud can be used in the fields of building materials, roadbed materials or soil amendments and the like, and cyclic utilization of resources is realized.

The invention relates to a resourceful treatment method for a bauxite ore washing tail mud reservoir, which comprises the following specific steps: 1, carrying out cyclone classification on tail mud in the tail mud reservoir, and separating out coarse particles with A / S greater than or equal to Y and A / Slt; and Y fine particles. And 2, carrying out flotation treatment on the coarse particles. And potassium carbonate is added as a dispersing agent and a pH value adjusting agent, the pH value of the ore pulp is adjusted to 8.0-10.5, then sodium oleate is added as a collecting agent, and finally bauxite concentrate and flotation tailings are obtained. And 3, dehydrating the fine particles to obtain dehydrated tail mud with the water content of less than or equal to 20%. And 4, adding the flotation tailings and the dehydrated tail mud into a curing agent or a soil conditioner to form cultivable soil which is used for ecological restoration of the stony desertification area. Potassium carbonate is used for replacing sodium carbonate to reinforce flotation, so that tailings can be used as potassium-rich cultivation soil; the dam break risk can be eliminated after the tail mud is dehydrated; tailings and fine particles are compounded to form cultivation soil to treat stony desertification, silicon fertilizer is synchronously produced, the annual income is larger than or equal to 0.3 million yuan, and safe, resource and ecological cooperative treatment is achieved.

This invention discloses a soil improvement and fertilization fertilizer for rhizosphere micro-domains in saline-alkali land and its preparation method, belonging to the field of saline-alkali land management technology. The fertilizer consists of a microbial core, a slow-release fertilizer sub-outer layer, and a soil conditioner outer layer. The microbial core is composed of a compound microbial agent (composed of nitrogen-fixing bacteria, phosphate-solubilizing bacteria, and potassium-active bacteria), biochar, and a high-molecular organic membrane material. The slow-release fertilizer sub-outer layer is composed of chemical fertilizers, inhibitors (nitrification inhibitors and / or urease inhibitors), and amino acids. The soil conditioner outer layer is composed of a soil conditioner specifically for saline-alkali land improvement. The advantages of this invention are: (1) it first adjusts the soil pH and improves the soil structure, so that the microbial community can better adapt to the soil environment of saline-alkali land; (2) the biochar and the isolation membrane effectively protect the microbial activity, and release the microorganisms when the soil pH and base ions around the rhizosphere reach a low level, overcoming the saline-alkali barrier to microbial growth.

The invention relates to the technical field of ecological restoration of a coal mine in an arid region, and discloses an ecological restoration method for a waste dump of the coal mine in the arid region. According to the method, a multi-parameter environment sensing model containing soil humidity, soil components, surface temperature, vegetation indexes and regional gradient data is established, and whether ecological restoration is started or not is judged according to the model. And selecting at least one of water, a nutrient solution or a soil conditioner as a restoration medium, and quantitatively conveying the restoration medium to a predetermined area through an independent conveying path isolated from natural rainfall. The recovery area is composed of an independently-arranged conveying pipe network, the water flow direction is dynamically judged according to the gradient of the area, and natural diffusion advantage position pipe section conveying is preferentially started. During conveying, the operation time period is determined according to the medium absorption rate, intermittent conveying is executed on the selected pipe section, and the average flow in each cycle is controlled not to exceed the system reserve capacity. And when the reserve is insufficient, conveying is suspended, operation information is recorded, remaining operation continues to be completed after the reserve is recovered, and closed-loop recovery control is achieved.

The invention relates to a large-scale high-yield and high-efficiency cultivation mode of pumpkins in saline-alkali soil, which adopts a composite modifier to improve the saline-alkali soil, and the composite modifier contains an organic fertilizer, a soil conditioner and a saline-alkali tolerant microbial strain in a specific proportion, so that the soil structure and fertility are effectively improved; a pumpkin variety with a salt-tolerant gene marker is selected, and the salt tolerance and the survival rate of seedlings are remarkably improved by combining a biochar seedling raising technology; through an intelligent drip irrigation system and a precise fertilization technology, the irrigation and fertilization amount is dynamically adjusted according to the growth stage of pumpkins and soil fertility, and the resource utilization efficiency is improved; a disease and pest control method combining physical and biological control is adopted, meanwhile, an S-shaped vine pressing method is combined to promote plant growth, and product quality tracing is achieved through a block chain technology. The problem of pumpkin planting in the saline-alkali soil is effectively solved, the yield and quality of pumpkins are remarkably improved, remarkable economic benefits and ecological benefits are achieved, and a new thought and method are provided for agricultural development of the saline-alkali soil.

The invention provides a saline-alkali soil conditioner as well as a preparation method and application thereof, and belongs to the technical field of soil improvement. The saline-alkali soil conditioner is prepared from the following raw material components in parts by mass: 80 to 90 parts of edible fungus residues, 10 to 20 parts of humic acid and 0.1 to 0.3 part of a microbial agent. The saline-alkali soil conditioner provided by the invention can obviously reduce the pH and total salt content of the surface layer of soil, obviously improve the content of nitrogen nutrients in the soil, optimize the distribution structure of the nitrogen nutrients and reduce the risk of nitrogen leaching loss. Meanwhile, the water and fertilizer retention capacity of soil can be improved, soil nutrients can be supplemented, the soil fertility can be improved, the harm of soil salinity to crops can be reduced, and the stress resistance and the yield of the crops can be improved. The soil conditioner for the saline-alkali land can solve the problems that at present, soil of salinized farmland in Hetao irrigation districts is prone to hardening, the soil fertility is low, the soil water and fertilizer utilization rate is low, and the crop biomass is low.

The invention discloses application of leguminous green manure in preparation of a multifunctional soil conditioner for improving soil enzyme activity, relieving soil microbial metabolism limitation and / or enhancing a soil ecosystem. The leguminous green manure is small crown flowers. By means of the controllable decomposition characteristic and specific secretions, the activity of soil carbon (BG and CBH), nitrogen (NAG and LAP) and phosphorus (AKP) circulation key enzymes can be remarkably enhanced, the activity of the AKP is improved by 406%, the activity of the BG is improved by 158%, the microbial carbon limitation is effectively relieved by 12%, and the resource utilization strategy is optimized. The microcelosia cristata treatment can synchronously improve the soil ecological multi-functional index (EMF) and improve the nutrient circulation synergistic efficiency. Compared with the traditional leguminous green manure, the method has the advantages that the improvement effect of the microcelosia cristata in the degraded orchard is more continuous and ecologically adaptive, and an effective and feasible new soil remediation way is provided for agricultural sustainable development.

The invention belongs to the technical field of crop planting and soil improvement, and particularly relates to a soil conditioner, application and a method for planting wheat by combining the soil conditioner with soil. The soil conditioner is prepared from dolomite, quick lime and organic fertilizer. The invention further provides application of the soil conditioner in improvement of acidic yellow brown soil in southern Henan province. The invention also provides a method for planting wheat by mixing the chemical fertilizer, the soil conditioner and soil. The method is mainly used for solving the problem of soil acidification in the yellow and brown soil area and solving the problem that growth of wheat is inhibited due to the soil acidification problem, and has important significance on guaranteeing the quality of cultivated land and food safety in the southern Henan area.

The invention provides a saline-alkali soil conditioner as well as a preparation method and a use method thereof, and belongs to the technical field of soil conditioners. The saline-alkali soil conditioner comprises the following components in parts by weight: 30-50 parts of modified montmorillonite, 20-50 parts of modified attapulgite, 10-30 parts of an organic material, 10-30 parts of humic acid, 2-5 parts of a synergist and 2-5 parts of a microbial compound preparation. Compared with application of a single modifier, the composite saline-alkali soil conditioner obtained by reasonably compounding multiple modifiers has a better improvement effect on saline-alkali soil, and has the characteristics of low cost, high energy efficiency, environmental friendliness and the like.

The invention relates to the technical field of soil improvement, and particularly discloses a soil conditioner based on microbial community regulation and control and a preparation method thereof, the soil conditioner comprises: (a) a composite functional flora comprising nitrogen-fixing bacteria, phosphate solubilizing bacteria, potassium-dissolving actinomycetes and trichoderma, and the viable count ratio of the nitrogen-fixing bacteria to the phosphate solubilizing bacteria to the potassium-dissolving actinomycetes to the trichoderma is (1.0-1.5): (0.8-1.2): (0.5-1.0): (0.3-0.8); b) modified biochar carrier: the modified biochar carrier is prepared by oxygen-limited thermal cracking of agricultural wastes and is subjected to surface modification by a chitosan solution with a mass fraction of 3-5%; (c) a synergistic component which comprises humic acid particles and an enzymolysis seaweed extract; (d) a flora activator: compounding fructo-oligosaccharide and L-aspartic acid according to a mass ratio of 2: 1; through the synergistic effect of multifunctional composite flora of nitrogen-fixing bacteria, phosphate-solubilizing bacteria, potassium-solubilizing actinomycetes and trichoderma, the biotransformation process of nitrogen, phosphorus and potassium elements in soil is synchronously activated, and the modified charcoal carrier is subjected to multi-stage pyrolysis and chitosan modification to form a graded pore structure.