58results about How to "Achieve water retention" patented technology

The invention discloses a desert control method of a chemical sand-fixing greening technology based on organic composite materials, and the desert control method is characterized in that hydrophilic polyurethane resin curing agent solution is sprayed on a sand or soil layer of greening objects for sowing the vegetation for forming a porous fixed sand layer. The fixed sand layer formed by the method has appropriate thickness and strength, good durability, good anti-freeze and melt properties and functions of water retention, thermal insulation, ventilation, vegetation and the like. According to the method of the invention, the stable and effective solidifying can be carried out on sand even under the specific desert environments of no abundant groundwater sources and strong wind erosion, and the purpose of vegetation greening can be also realized. The method has large-scale construction properties and good economic performances, thereby being applicable to the needs of large-scale chemical sand fixing and vegetation greening of the vast desert and realizing the plant greening function and the ecological restoration and the control of desertified land.

The present invention discloses one kind of acid silica sol and is especially one kind of acid silica sol applied in treating human and animal excrement and garbage. The acid silica sol has concentration of 25-35 wt%, SiO2 grain diameter of 1-12 nm and pH 2-4, and may be used to replace microbe in treating human and animal excrement and garbage to eliminate offensive odor and to produce efficient organic fertilizer. The organic fertilizer is superior to available fertilizer in that it will be dissolved slowly for plant to absorb fully and has slow releasing, water maintaining and silicon replenishing functions.

The invention relates to a medium element fertilizer for conditioning and improving soil and a production method thereof. The medium element comprises the following raw materials: oyster shell powder, humate, magnesium-containing mineral and polyglutamic acid. By the medium element fertilizer, the organic effective combination of natural bioactive calcium, natural mineral humic acid and polyglutamic acid is achieved, the phenomenon that crops are short of medium elements in the soil is solved or alleviated and the medium element fertilizer has the effects of conditioning and improving the soil, increasing the number of bacterial communities in the soil, improving the utilization rate of soil nutrients and fertilizer nutrients, promoting the development of root systems, improving the immunity of crops, increasing the yield and improving the quality.

The invention belongs to the technical field of adhesive, and specifically relates to a preparation method of a polyvinyl acetate woodworking adhesive with a long open time. According to the preparation method, hydroxyethyl methacrylate (HEMA) taken as polyhydroxyl monomers is introduced into copolymerization monomers, diacetone acrylamide is taken as the crosslinking agent and carries out crosslinking with HEMA to form a network capsular cavity structure, water molecules and hydroxyl groups of HEMA form hydrogen bonds in the capsular cavity, the water retention function is realized, and the open time is prolonged. Water is taken as the dispersing medium of the polyvinyl acetate woodworking adhesive; the use is convenient, no environmental pollution is generated; and compared with a conventional polyvinyl acetate woodworking adhesive with a same solid content, the open time of the provided adhesive is longer.

A fertilizer special for roses comprises the following raw materials in parts by mass: 15 parts of N, 7 parts of P, 8 parts of P, 10 parts of amino acid, 10 parts of humic acid, 5 parts of microelements, 4 parts of rare earth elements, 8 parts of a water-retaining agent, 7 parts of a soil conditioner, 6 parts of a fertilizer synergist, 3 parts of a fertilizer controlled-release agent, 3 parts of a continuous cropping-resistant agent and 2 parts of a straw rotting agent. The fertilizer special for the roses is quick, lasting and comprehensive in fertilizer efficacy; the fertilizer special for the roses has high activity and lastingness of an organic fertilizer and a biofertilizer, has a fast-acting property of an inorganic fertilizer and has specificity of a microbial fertilizer and a bacterial fertilizer; the fertilizer special for the roses has a relatively good ion exchange function and a relatively good soil pH value-adjusting function, and can improve the structure of a soil aggregate so as to achieve special breathing, fertilizer-retaining, water-retaining, heat-preserving, drought-resisting and cold-resisting efficacies; the fertilizer special for the roses enables seedlings to grow tidily and strongly, enables roots to be developed, can reduce diseases and pests, enables stems and leaves to grow strongly, can ensure high fruit-setting ratio and high yield, and can increase the yield by more than 30%.

The invention belongs to the field of fertilizers for crops and particularly relates to an ecological functional compound fertilizer and a preparation method thereof. The ecological functional compound fertilizer is prepared from the following main components: sludge, a compound fertilizer, a microbial agent, an organic waste, a soil heating agent and an oxygen supplier. The sludge obtained from the treatment of municipal domestic wastewater and the organic waste serve as organic matters, contain multiple nutrients and can be combined with the compound fertilizer to increase the utilization rate of the compound fertilizer and increase the content of organic matters in soil; the added soil heating agent can preserve the temperature around the roots of crops in deep soil and prevent crops from being frostbitten and frozen to death; the added oxygen supplier can supply oxygen to microorganisms in soil and cells in crop roots to increase the activity of the microorganisms in soil and the crop roots, accelerate the absorption of the ecological compound fertilizer, enhance the adversity, disease and cold resistance of crops, improve the structure and fertility of soil and promote the growth of crops; the pollution of sludge to environment can be reduced, and the sludge can be reutilized; and the ecological compound fertilizer is safe to people, animals and environment and is natural, innoxious and environmentally friendly.

The invention relates to a complete technology for treatment and disposal of sludge. The complete technology comprises the following steps of (1) environment-friendly sludge cleaning: cleaning the sludge by an environment-friendly cutter suction method, and centrally treating the sludge; (2) pretreating of sludge slurry: removing foreign matter in the sludge by gravity precipitation and a grillagemachine, enabling the sludge slurry after removal of the foreign matter to flow into a conditioning tank, and naturally settling the sludge slurry; (3) deep conditioning of the sludge slurry: enabling an agent adding system to add a flocculant into the pretreated sludge, mechanically stirring, fully reacting, and completing flocculation and dewatering of the sludge slurry; pumping the slurry after flocculation into a pipeline stirring machine, and enabling the agent adding system to continuously add a solidifying agent; (4) modifying of the sludge: sending the sludge after deep conditioning into a double-shaft continuous type uniform mixing machine, enabling the agent adding system to continuously and quantitatively add a modifying agent, and adjusting the pH (potential of hydrogen) value, total content of nutrients, and porosity of ventilation; (5) curing. The complete technology has the advantages that the technology is simple, and the cost is low; the sludge can be truly properly treated and resourcefully utilized, and the development concept of circular economy is met.

The invention relates to a fertilizer and particularly relates to a compound fertilizer. The compound fertilizer disclosed by the invention consists of beer residue, urea, dipotassium phosphate, potassium sulphate, median nutrient elements, borax, manganese sulfate, molybdenum ammoniate heptahydrate and compound strains. The compound fertilizer disclosed by the invention is fast, long-term and comprehensive in fertilizer efficiency, not only has high activity and long residual action of an organic fertilizer and a biological fertilizer, but also has the specificity of a micro element fertilizer and a bacterial fertilizer. The compound fertilizer contains full-value nutrient elements required by plants and scientific in matching, and the utilization rate and fertilizer efficiency of the compound fertilizer can be greatly improved.

In order to enhance the water-holding capacity of squid in the storage process, the invention provides a phosphorus-free squid water-retaining agent and application thereof, and belongs to the technical field of aquatic product processing. The specific scheme is as follows: the phosphorus-free squid water-retaining agent includes 1-3 parts of a water-retaining expander, 2-4 parts of a water-retaining synergist and 4-8 parts of a strengthening water-retaining agent. The water-retaining expander is a monosaccharide derivative or / and an oligosaccharide derivative; the water retaining synergist isa neutral salt or / and a salt of weak acid and strong alkali, and the strengthening water-retaining agent is oligosaccharide or / and water-soluble polysaccharide. The application method is as follows:the water-retaining agent is prepared into 1.0%-2.0% of a water solution according to the above proportioning ratio, and a squid raw material is immersed in the water-retaining agent solution. The squid products treated by the application method of the water-retaining agent recorded in the present invention are frozen for 3 months, after being thawed by refrigerated air, the squid products are glossy in the surface, and have no wrinkles, elastic texture, and good taste and no odor after cooking.

The invention discloses a preparation method of a high-efficiency liquid fertilizer. The method comprises the following steps of: mixing 40 percent of amino acid ammonia, zinc sulfate, manganese sulfate, boric acid, molybdenum amino acid, copper sulfate, ferrous sulfate, KOM and water, and putting a mixture into a corrosion-resistant reaction kettle; and stirring and mixing for producing. The defects of the prior art are overcome, the provided liquid fertilizer has high stress tolerance, the soil structure can be improved, the using amount of phosphorus is reduced through root circulation, chemical fertilizer pollution is lowered, and a certain environmental protection function is achieved.

The invention relates to a vegetable preservation and storage technology and particularly relates to a vegetable preservation method and its application. The vegetable preservation method includes steps of immersing vegetables by Chinese herbal medicine component preservative for 10-20 minutes; packaging the vegetables by a monomolecular film high-pressure preservative bag after fishing out and air-drying; finally, putting the preservative bag in a controllable ventilating house to store; adjusting the temperature of the ventilating house to 10-16 DEG C, the humidity to 80-85% and the concentration of carbon dioxide to be not more than 400 ppm. The preservation method is applied to the preservation treatment of potato, Chinese yam and sweet potato. The preservation method is good in sterilizing effect, and able to effectively prolong the freshness retaining effect of the vegetables, and is free from pollution of vegetable products and environments, and harm to human body; therefore, the vegetable preservation method has wide application prospect.

The invention provides a preparation method of cotton pulp. The method comprises the following steps: mixing alkali liquor and cotton linters subjected to impurity removal, and performing continuous boiling, washing, pulping, degritting, primary concentration, chlorine alkalization, bleaching, acid treatment, water washing, degritting, secondary concentration and papermaking, so as to obtain the cotton pulp. The mass ratio of alkali in the alkali liquor to the absolute-dry cotton linters is (13 to 15): 100; the temperature for continuous boiling is 108 to 115 DEG C; the period for continuous boiling is 55 to 65min. According to the method, cotton pulp is prepared through a high alkali content, low temperature and short time continuous coiling mode, materials are uniformly heated in a tube, uniform permeation of alkali liquor is achieved, and the product polymerization degree is uniform; cotton fiber primary walls and secondary walls can be destroyed furthest, so that the degree of crystallinity of cotton pulp fiber is reduced, the amorphous region rises, and the reaction activity of the cotton pulp is improved. Through the adoption of the cotton pulp with high reaction activity, high-quality carboxymethylcellulose can be prepared.

The invention discloses a biological organic fertilizer which comprises the raw materials as follows: organic matters, available nutrients, lime, dried blood, bone meal and strains. The biological organic fertilizer can slow down the vicious circle of environmental quality so as to use the cultivated lands sustainably for a long time; can meet the proportioning demand of plants to nutrients, and the organic matters further absorb and store the available nutrients added to realize the effect of slow release and sustained release so as to reduce the loss of the available nutrients such as permeation, fixation, volatilization and the like. The organic matters can further improve the physicochemical properties of soils under repeated effect of soil microorganisms so as to enhance the fertilizer and water conservation capacity of soils.

The invention provides a biological organic fertilizer for recycling spent bleaching clay. The raw material formula of the fertilizer comprises the following components: 50-70 parts of spent bleaching clay, 10-15 parts of humic acid, 0.5-2 parts of composite bacteria liquid, 0.5-1 part of a complex enzyme, 5-10 parts of aluminum-magnesium silicate and 0.01-0.1 part of a plant growth regulator, wherein the composite bacteria liquid is formed by mixing culture solutions of pseudomonas, bacillus subtilis, white-rot fungi, bacillus cereus and bacillus thuringiensis according to a volume ratio of 1:(1.3-1.6):(0.5-1.1):(0.3-0.6):(0.2-0.4); the complex enzyme is formed by mixing amylase, lipase and ligninase according to a mass ratio of 1:(1.4-1.6):(0.3-0.8); and the plant growth regulator is a combination of brassinolide and one or more selected from benayl aminopurine, furfurylaminopurine and diethylaminoethyl hexanoate. The biological organic fertilizer disclosed by the invention has the effects of controlling soil pests and degrading pesticides and chemical residues in the soil, has multiple functions of curing and stabilizing heavy metal ions in the soil and the like, and is excellent in comprehensive improvement effect. Moreover, the problem that roots and seedlings are burnt is solved, and the cost is low.

The invention discloses an ecological protective coal mining method by mineralizing and utilizing CO2 waste gas. The ecological protective coal mining method is suitable for underground coal mines. The ecological protective coal mining method comprises the following steps that filling mining critical key parameters required by stability of a stope mining overlying strata seepage isolation zone are determined, sealing walls are constructed at two ends of a mining space along with advancing of a working face to seal a mined area, then a CO2 mineralization filling material CFBF is poured into the sealed area to fill a goaf along with mining, and it is ensured that the goaf is supported after the filling CFBF is solidified; and the CFBF is prepared from gangue, fly ash and mine sewage in a mining area, and is supplemented with cement and an alkaline silicon-based additive, so that formation of a mining overburden seepage isolation zone is ensured, continuous CFBF filling can be carried out, and finally the replacement of CO2 and coal is realized. The operation is simple, the result is reliable, and the recovery rate of coal resources can be greatly improved on the premise of realizing CO2 mineralization and solid waste material treatment.

The invention discloses a sorghum special-purpose slow release fertilizer containing trace element, which belongs to the technical field of agricultural fertilizer. The sorghum special-purpose slow release fertilizer is prepared by components of granule urea, monoammonium phosphate, potassium chloride, EDTA chelated zinc, a urease inhibitor, a nitrated inhibitor and bentonite. The sorghum special-purpose slow release fertilizer has the advantages of comprehensive nutrient and reasonable ratio, the added trace elements such as zinc can promote photosynthesis and increase stress resistance; the sorghum special-purpose slow release fertilizer can eliminate soil hardening condition and is capable of loosening soil, the slow release fertilizer nitrogen nutrient is matched with sorghum absorption, and can be taken as a base fertilizer for one time application before sorghum sowing, topdressing is not required, the fertilization flow is simplified, and the sorghum special-purpose slow release fertilizer has the advantages of fertilizer saving and labor saving.

The invention relates to a chemical fertilizer synergist, and especially relates to a nitrogen fertilizer high-molecular composite synergist and a preparation method thereof. The synergist comprises, by weight: 1-1.5parts of high-water-absorption resin, 6-10 parts of zeolite, and 0.5-0.8 parts of potassium humate. The method comprises the steps that: the high-water-absorption resin, zeolite, and potassium humate are screened; the high-water-absorption resin, zeolite, and potassium humate are bake-dried; the materials are well mixed; and the synergist is mixed with a nitrogen fertilizer with a ratio that the synergist to pure nitrogen fertilizer is 1:1-1.4. The synergist provided by the invention has the advantages that: with the synergist, an absorption effect is provided, nitrogen fertilizer release speed can be regulated, nitrogen fertilizer utilization rate can be improved, soil aggregate structure can be ameliorated, plant water-fertilizer absorption can be promoted, plant growth can be promoted, and the synergist can be repeatedly utilized. With the synergist, nitrogen fertilizer utilization rate of plant can be improved, peasant burden can be reduced, and environment pollution caused by nitrogen fertilizer loss can be reduced. With the synergist, agricultural production improvement, fertilizer saving, and environment protection can be combined.

The invention belongs to the technical field of water-saving irrigation, and particularly relates to a flow divider for water-saving irrigation and an irrigation system thereof. The flow divider comprises an outer shell, an upper sealing plug, a lower sealing plug, a water inlet coil pipe and other structures. Three modes of underground water seepage irrigation, earth surface drip irrigation and jet irrigation are provided, and in addition, the three irrigation modes can be controlled through water pressure; two sealing plugs are arranged in the flow divider, and control of three modes under water pressure and free switching of different irrigation modes are effectively guaranteed through the mutual matching position relation and the vertical moving position of the two sealing plugs; according to the water-saving irrigation system, the structural characteristics of the flow divider are fully utilized, corresponding water outlet branch pipes and irrigation branch pipes can be arranged according to the terrain of a green land park, and coverage and comprehensiveness of a green land in a drip irrigation mode are achieved; in addition, according to the scheme, irrigation in different modes can be achieved according to different requirements, and therefore the requirements for water saving and water retention in the green land park irrigation process are effectively met.

The invention discloses a no-tillage direct seeding method for seeds. The no-tillage direct seeding method comprises the following steps of not performing ploughing, not applying herbicide, not irrigating field soaking water, not performing rotary tillage before planting of next crop, keeping the field surface dry, carrying out harvesting and crushing on the previous crop to obtain the crushed straw of the previous crop, and leaving the stubbles of the previous crop after harvesting; pressing down stubbles of the previous crop, and performing seed sowing of the next crop; and after stubbles ofprevious crop are rebounded, enabling the crushed straw of previous crop to cover on stubble surface of previous crop. The invention also discloses an oilseed rape cultivation method based on a rice-rice-oil triple cropping system; and the soil plough layer structure is changed, a straw layer, a seed fertilizer layer and a soil layer are formed from top to bottom, full-amount returning of crop straw is achieved at a time, the straw is converted into a covering, seeds and chemical fertilizer are covered, the fertilizer utilization efficiency is improved, and optimal coupling of crop straw treatment, mechanical production and crop growth is achieved.

The invention provides a bio-organic fertilizer based on waste clay. The raw material formula of the bio-organic fertilizer contains the following components in parts by weight: 50-70 parts of waste clay, 10-15 parts of humic acid, 0.5-2 parts of compound bacteria liquid, 0.5-1 part of compound enzyme, 5-10 parts of aluminum-magnesium silicate and 0.05-0.2 part of brassinolide, wherein the compound bacteria liquid is prepared by mixing pseudomonas, bacillus subtilis, white-rot fungus, bacillus cereus and bacillus thuringiensis in a volume ratio of 1 to (1.3-1.6) to (0.5-1.1) to (0.3-0.6) to (0.2-0.4) of a nutrient solution; and the compound enzyme is prepared by mixing amylase, lipase and ligninase in a mass ratio of 1 to (1.4-1.6) to (0.3-0.8). The bio-organic fertilizer has multiple functions of preventing and controlling soil pests, degrading pesticide and chemical residues in soil and solidifying and stabilizing heavy metal ions in soil, has an excellent comprehensive improvement effect and relatively low in cost, and the problems of root burning and seedling burning are avoided.

The invention relates to a truss type space embankment and wall structure, comprising a cantilever structure group and a member bar group. Each cantilever structure in the cantilever structure group consists of a guy anchor support column and a multidirectional web, the guy anchor support column is to arrange a guy anchor at the lower part on a supporting stratum or a base, thus forming the bearing of the cantilever structure and the upper part is assembled with the multidirectional web to form a knot structure similar to the function of a truss knot; two ends of each member bar in the member bar group are integrated with the knot by a binding part, therefore, a hinging function is formed and after the mutual combination, the whole structure becomes a truss type space embankment and wall structure. The invention can not only achieve the purpose of safe maintenance, but also protect and improve the environment, enhance landscape effect and be beneficial to ecological development.

The invention provides a natural food preservative used for fruits and preparation thereof. The preservative comprises first smearing liquid and second smearing liquid, wherein the first smearing liquid comprises the following ingredients by weight percent: 0.8%-1.4% of carboxymethyl cellulose, 1-2% of maltodextrin, 0.3%-0.8% of baking soda and the balance of deionized water; the second smearing liquid comprises the following ingredients by weight percent: 1%-1.5% of konjak gum, 0.2%-1% of beewax, 0.5%-2.5% of plant extract, 1%-5% of a solvent and the balance of deionized water. The preservative adopts natural ingredients for protection, is green and safe, achieves the effects of water retention, oxidization resistance, antibiosis and corrosion prevention of the fruits sequentially through multilayer spraying, has multiple functions, effectively reduces metabolism after the fruits are picked, prolongs the preservative period for 15 days or more, has good color keeping and flavor keeping properties, and improves the fruit marketing performance.

The invention discloses a porous environment-friendly material. The specific gravity of the porous environment-friendly material is 0.6-1.1, and the hydroscopicity is below 15%; the porous environment-friendly material is prepared by the following steps: glass powder as well as sludge sand and sediment which are produced by dehydration, desiccation and burning from a sewage treatment plant are mixed according to a proportion of 35-80:1-10 in parts by weight, grinding is carried out, and a primary powder mixture is obtained; the primary powder mixture is screened and treated, and the screened primary powder mixture composed of glass powder as well as sludge sand and sediment is added into a mixing and stirring device; 5-20 parts of clam shells and 1-15 parts of vermiculite powder are added into the mixing and stirring device in the step 4, mixing and stirring are carried out for the clam shells, the vermiculite powder, the glass powder, and the sludge sand and sediment, and mixed power is formed; the mixed power is added into a sintering furnace, and the porous environment-friendly material is manufactured at a high temperature condition. Recycle of waste glass and regeneration of sludge sand and sediment are organically combined with breakthrough, bubbles are enclosed, independent and discontinuous, and the environment-friendly material can be used as building light-weight frame material, construction foundation material, and water quality purifying material.

The invention discloses a special sunshine rose grape organic fertilizer and a preparation method thereof. The organic fertilizer comprises modified starch which is prepared from starch which is subjected to magnetization modification with chitosan and sodium salt. The preparation method of the organic fertilizer comprises the following steps: fermenting plant ash, livestock excrement and grape wine distillers' grains with EM (Effective Microorganism) bacteria, and drying so as to obtain a composted fertilizer; dissolving a nitrogen phosphorus and potassium fertilizer, a growth regulator, bamboo vinegar and trace elements with water, adding the composted fertilizer, kieselguhr, attapulgite, nicotinamide and crotonic anhydride, and pelletizing so as to obtain fertilizer granules; dissolvingstarch with water, heating to implement gelatinization, adding chitosan, sodium metasilicate and sodium pyrophosphate, and carrying out magnetization modification so as to obtain modified starch; spraying the modified starch on the fertilizer granules, and drying, thereby obtaining the special organic fertilizer. The special organic fertilizer disclosed by the invention is comprehensive in nutrition, reasonable in proportioning, good in slow release property, good in permeability, high in stability and large in granule density, and the preparation method is simple in process, good in operability, easy in raw material, low in cost, rapid in granule molding and high in finished product rate.

The present invention discloses a treatment method of fresh duck intestines. The method comprises the following steps: S1: fresh duck intestines are washed clean and the washed duck intestines are drained for standby application; S2, food-grade sodium hydrogen carbonate powder with the weight being 2-8% the total weight of the fresh duck intestines is sprayed on the surfaces of the fresh duck intestines; S3, the fresh duck intestines are put into a rolling and rubbing machine to be rolled and rubbed for 5-20 minutes at a temperature of 5-15 DEG C, the rolled and rubbed duck intestines stand for 10-50 minutes at room temperature, the sodium hydrogen carbonate is permeated into the fresh duck intestines, then the fresh duck intestines are washed clean with clear water, and the washed duck intestines are filtered; and S4, the processed fresh duck intestines in the step S3 is cut, the cut duck intestines are sub-packaged in a plastic bag, compound phosphate solution is poured into the bag, the cut duck intestines are soaked for 10-40 minutes at a normal temperature, and then the soaked duck intestines are washed with clear water, the washed duck intestines are drained, and the drained duck intestines can be eaten instantly; and the compound phosphate solution is at least one of sodium tripolyphosphate solution, sodium hexametaphosphate solution and sodium pyrophosphate solution at a mass percentage of 0.1-0.5%. The prepared fresh duck intestines by the treatment method has the advantages of being relatively low in water loss rate during storage, relatively strong in water-retaining ability after rinsing and boiling, not tough after the duck intestines are put into a pot to be rinsed and boiled, and good and crisp in tastes.

The invention relates to a special bio-organic fertilizer using DDGS as a main material for tobacco fermentation. The special bio-organic fertilizer comprises the following raw materials in parts by weight: 67-81 parts of DDGS, 10-14 parts of rapeseed cake, 10-14 parts of biogas residue, 1.5-2.5 parts of mother liquor, 0.05-0.15 part of nutrient element, 0.06-0.1 part of amino acid, 1.5-2.3 partsof humic acid, 0.01-0.02 part of medium trace element, 0.05-0.2 parts of heat-resistant enzyme, 0.05-0.1 part of thermophilic microbial inoculum, 0.3-0.7 part of ammonium sulfate and 1-2 parts of branpowder. the special bio-organic fertilizer has the beneficial effects that the special bio-organic fertilizer for the fermented tobaccos is high in fertilizer efficiency, long in fertilizer efficiency and comprehensive in fertilizer efficiency; the fertilizer has the high activity and long-term effect of organic fertilizers and biological fertilizers, and also has the fast-acting property of inorganic fertilizers and the special effect of microelement fertilizers and bacterial fertilizers, has complete nutrient elements required by plants, and is scientific in proportion. The beneficial biological strains in the special tobacco fertilizer produced by the invention can accelerate rapid cyclic decomposition of substances, release of various nutrient elements, nitrogen fixation, phosphate solubilization and potassium solubilization, promote photosynthesis of plants, and greatly improve the utilization rate and fertilizer efficiency of the fertilizer.

The invention discloses a microbial remediation method applied to a non-soil dressing mining area, which mainly utilizes the organic combination of various strains such as sulfate reducing bacteria, photosynthetic bacteria, nitrogen-fixing bacteria and the like to construct a healthy underlying microbial ecosystem on the surfaces of bare rocks and sandy soil, and the underlying microbial ecosystem can be self-balanced and self-grown under the illumination condition. By secreting extracellular polymeric substances to be adhered to the surfaces of bare rock and sandy soil to grow, water contained in the air can be efficiently absorbed to be supplied to microorganisms, and various repairing functions such as water retention, ecological environment improvement and plant root system development promotion are achieved. Sulfide generated by remediation is stable, low in solubility and environment-friendly and has a buffering effect, after a bottom layer microbial ecological system is constructed, heavy metal is fixed in the farmland in a sulfide mineral form, crops can efficiently and rapidly grow in the farmland polluted by the heavy metal, and qualified agricultural products are produced. And the used microorganisms are environment-friendly microorganisms, so that the environmental ecology can be fundamentally improved, and the durability is realized.

The invention provides a transmitting arch crown transplanting method for tobacco seedlings. The transmitting arch crown transplanting method comprises the following steps of punching soil to form holes, transplanting the tobacco seedlings into the holes, covering a transmitting arch crown protection cover on each hole, and removing the protection cover in the event that leaves at the top end of the grown tobacco seedling are in contact with the top of the protection cover. During transplanting, fertilization and watering do not need. The cover body of the protection cover is 8-12cm in depth; the diameter of the cover body is 18-20cm; the cover edge is 1-2cm in width. The invention provides a new tobacco seedling transplanting method, which does not use mulching films, so that the environment pollution problem caused by that the mulching films remained in soil are difficult to degrade is solved; the complex operation of mulching film breaking and seedling pulling can be avoided, so that the diseases brought by the operation of the seedling pulling can be reduced. Therefore, the method provides sufficient guarantee for the safety of the tobacco seedlings in cold weathers and other extreme weathers.