34results about How to "Reduce salinity" patented technology

According to the coastal saline-alkali land underground water level adjusting system based on real-time monitoring and intelligent regulation and control, the system integrates the soil salinity sensor, the underground water level sensor and the central processing unit, future trend prediction is carried out by monitoring key parameters such as soil salinity and underground water level in real time in combination with a deep learning model, and the real-time monitoring and intelligent regulation and control are achieved. And precise intelligent regulation and control are realized. The system can effectively reduce soil salinization, prevent seawater from flowing backwards, improve the utilization efficiency of water resources and reduce the labor management cost at the same time. The method is characterized in that the application of multi-parameter comprehensive monitoring, a deep learning prediction model and a self-adaptive intelligent regulation and control algorithm provides a new technical solution for coastal saline-alkali land treatment.

The invention discloses a special growth-promoting microbial fertilizer for saline-alkali soil and a preparation method of the special growth-promoting microbial fertilizer, and belongs to the technical field of growth-promoting microbial fertilizer.The special growth-promoting microbial fertilizer for saline-alkali soil is obtained by mixing organic manure, ammonium humate, fungicide particles, crop straw, slow-release phosphate fertilizer particles, hydroxyapatite, chitosan and citric acid in proportion; according to the granular microbial inoculum carrier, the biochar particles and the iron-carbon composite microspheres serve as matrixes, the raw materials such as the fly ash form a foaming porous adhesive substance under the action of alkali excitation, the matrixes such as the biochar particles are bonded, a stable porous structure can be formed easily, a proper environment is provided for growth of phosphate solubilizing bacteria, and the phosphate solubilizing and growth promoting effects of the phosphate solubilizing bacteria are improved. The microbial agent particles have good water absorption and can adsorb sodium ions in soil after being watered, and calcium and magnesium components contained in the fly ash-based adhesive substance can be exchanged with the sodium ions to play a fixing role, so that the salt stress effect on crops is reduced.

The invention discloses a method for regreening gobi deserts by utilizing microalgae crust and application, and belongs to the technical field of ecological restoration. The method mainly adopts a mode of combining microalgae spraying liquid with an engineering remediation method. When the microalgae spraying liquid is prepared, indigenous microalgae and known domesticated desert algae are mixed and co-cultured to prepare a spraying agent, and then soil bacillus is added before spraying. The engineering regulation method mainly comprises the following steps: forming a concave-convex structure by piling up soil mound bags and digging ditches, increasing the specific surface area of the growth of the microalgae spraying liquid by using the uneven land surface layer, and reducing the evaporation speed of the moisture of the microalgae spraying liquid by using the concave land, thereby promoting the growth rate and adaptability of the microalgae and improving the skinning efficiency. In addition, nutritional functional organic fertilizers and / or nano conditioners need to be added into the soil to be remediated in advance. According to the method, the vegetation coverage rate can be increased to about 60% from the initial nearly zero, the gobi desert ecological environment can be obviously improved, the soil salinity and alkalinity can be obviously reduced, and the soil water retention capacity is enhanced.

The invention provides a peanut planting method for saline-alkali farmland, and belongs to the technical field of crop planting. The saline-alkali farmland is divided into a planting area where mulching films and drip irrigation belts are laid and a salt enrichment area which is not laid with the mulching films and the drip irrigation belts and has the interval of 30-60 cm; laying a drip irrigation belt and a mulching film in the planting area, and continuously supplying water for 2-6 times by utilizing the drip irrigation belt; and after the salt content is reduced to below 0.2%, punching and sowing peanuts. According to the method, the leakproofness of the upper portion of the mulching film is fully guaranteed and the ground temperature is rapidly increased through an interval flat land mulching mode, the transpiration circulation effect of water in the mulching film can be improved in combination with the geographical condition of high evaporation capacity, and after water is supplied to the drip irrigation belt, the water drives salt in the planting area covered with the mulching film to be transferred to the salt enrichment area not covered with the mulching film; the saline-alkali degree of a planting area is greatly reduced, then punching and sowing are conducted, the adverse effects of saline-alkali on peanut germination, seedling emergence and growth can be greatly relieved, and the mechanical efficiency is high.

The invention provides an improvement method for improving soil porosity of saline-alkali soil, which comprises the following steps: (1) uniformly spreading a saline-alkali soil conditioner on the surface of saline-alkali soil to be improved, and uniformly mixing the saline-alkali soil conditioner with the saline-alkali soil; (2) ploughing the saline-alkali soil to obtain a plough layer; (3) flattening the surface of the saline-alkali soil, and thoroughly watering the saline-alkali soil with water; after watering is conducted for 15-20 days, the saline-alkali soil is turned over again, and a planting layer is obtained; the soil conditioner in the step (1) is prepared from 20 to 30 parts of attapulgite-polyacrylamide, 10 to 30 parts of charcoal, 20 to 30 parts of humic acid and 10 to 20 parts of ardealite. Through the mass ratio of the attapulgite-polyacrylamide to the biochar to the humic acid, the obtained soil conditioner can better repair soil and can better maintain the granular structure of the soil, and the water retention and fertilizer retention effects are achieved.

The invention provides an improvement method of soda saline-alkali soil, and belongs to the technical field of soil improvement. The method comprises the following steps: crushing corn straws, spreading the crushed corn straws on the surface of soda saline-alkali soil according to the addition amount of 15-20 tons / hectare, ploughing, harrowing, ridging, sowing jute seeds, fertilizing, and burying a drip irrigation belt in the middle of a ridge at a position 3-5 cm away from the earth surface. According to the method, the straw returning technology is matched with jute planting, the soil salinity and alkalinity of the soda saline-alkali soil are remarkably reduced, the soil fertility is improved, the soil environment is improved, and the yield and quality of jute are remarkably improved.

The invention belongs to the technical field of microorganisms, and particularly relates to leuconostoc mesenteroides, fermented spicy cabbages with the effects of soothing the nerves, helping sleep and relieving anxiety and a preparation method of the fermented spicy cabbages. The leuconostoc mesenteroides NCU018046 provided by the invention is preserved in the China General Microbiological Culture Collection Center (CGMCC) on September 5, 2024, and the preservation number of the leuconostoc mesenteroides NCU018046 is CGMCC NO.31870. The strain has strong acid and cholate resistance, has strong inhibition capability on common food-borne pathogenic bacteria, and meets safety standards. The complex microbial inoculant provided by the invention is prepared from the strain and plant lactobacillus NCU0011098. The fermented spicy cabbages prepared by fermenting a single bacterial agent of leuconostoc mesenteroides NCU018046 or the complex bacterial agent are good in flavor and low in content of harmful substances, and have various biological activities of soothing the nerves, helping sleep, relieving anxiety, resisting hypertension, resisting oxidation, reducing uric acid, resisting colon cancer and the like.

The invention discloses a fly ash zeolite-based sustained-release material as well as a preparation method and application thereof. The material is a compound with an FAU / Zeoliite faujasite nanocrystal structure. According to the method, high-value resource utilization can be carried out on the fly ash remaining after combustion of a coal boiler, and in the synthesis process, various trace beneficial mineral nutrient substances of the fly ash are automatically loaded in the space of the honeycomb-shaped micro-mesoporous cage frame channel, so that required energy and mineral requirements can be provided for soil microorganisms and soil animals; the slow-release effect can be achieved, and macroelement nutrient chemicals can be completely replaced. The slow-release medium containing the material provided by the invention is a composition carrying trace mineral nutrients required by plants and macro nutrients lacked in a soil environment; the fertilizer can be widely applied to soil fertilizers, promotion of ecological balance of soil microorganisms and soil animals, promotion of degradation or inactivation of toxic substances in soil, soil pH improvement, plant fertilizers, promotion of plant growth, plant irrigation and the like, and has good effects.

The invention discloses a method for treating high-salt and high-concentration refractory organic wastewater, which comprises the following steps: carrying out advanced oxidation on the high-salt and high-concentration refractory organic wastewater, and mixing in an adjusting tank; carrying out softening reaction on the biochemical treatment effluent, and filtering through a tubular membrane to remove calcium ions, magnesium ions and suspended solids; performing concentration electrodialysis on the effluent of the tubular membrane; the biochemical treatment salinity is reduced through electrodialysis fresh water internal reflux, the problem of growth inhibition of a high-salt environment on microorganisms is solved, the salt concentration rate is improved through electrodialysis, the problems that traditional reverse osmosis concentration is low in COD tolerance and serious in membrane pollution are solved, and finally efficient treatment of high-salt and high-concentration refractory organic wastewater is achieved. The method has the advantages of low treatment cost and high treatment efficiency.

The application relates to the field of improving severely salinized soil, and discloses a soil improver and a preparation method and application thereof. The method comprises the following steps: mixing agricultural and forestry wastes and bacillus spores, and sequentially carrying out anaerobic composting and aerobic composting, wherein the agricultural and forestry wastes are a mixture of at least one of corncob, mushroom residue, peanut shell and crop straw and sweet sorghum residue. The composition provided by the application not only has the functions of water and fertilizer conservation, soil fertility improvement, soil structure improvement and biological diversity improvement, but also can promote plant growth, reduce the total salt content, pH value, alkalinity, conductivity and sodium ion exchange capacity of the soil.

The invention relates to the technical field of saline-alkali soil improvement, and discloses a layered deep application biochar saline-alkali soil improvement device which comprises a rack and two supporting wheels arranged at the end of the rack through a supporting frame, a fertilizer box is fixedly installed on the top face of the rack through two installation plates, and a connecting frame is fixedly installed at the position, between the two supporting wheels, of the rack; a plurality of groups of soil leveling structures distributed in a linear array are arranged at one end, far away from the supporting wheel, of the rack, and a fertilizing assembly is arranged at the position, under the fertilizer box, of the rack. The depth of the soil turning assembly can be dynamically adjusted or fixed, a charcoal quantitative application function is matched, fertilizer can be accurately distributed according to the soil salinization vertical distribution characteristic, the V-shaped soil leveling plate ensures that charcoal is completely covered by soil, loss and volatilization are avoided, the charcoal is embedded into the soil in a layered mode, the improved physical and chemical properties are fully exerted, and the soil salinization effect is improved. The soil structure is improved in a targeted manner, the salinity and alkalinity are reduced, and the improvement scientificity is improved.

This invention provides a *Roseolariomoraxella salina* strain for saline-alkali soil improvement, with accession number CGMCC No. 36067. The *Roseolariomoraxella salina* strain provided by this invention exhibits significant comprehensive application advantages. This strain demonstrates excellent survival and growth capabilities under saline-alkali stress, effectively reducing salinity and alkalinity in saline-alkali soils and thus improving the saline-alkali environment. Whole-genome analysis shows that this strain carries multiple functional genes related to osmotic regulation and ion transport, providing a molecular basis for its salinity-reducing ability. Adding citric acid or betaine can further enhance its salinity-reducing performance, and its biomass is significantly increased after optimization of fermentation conditions. This strain shows promising application prospects in saline-alkali soil improvement and saline-alkali aquaculture environment management.

The present invention discloses a raceway pool photobioreactor for promoting carbon source absorption by ammonia nitrate, comprising a raceway pool body, a partition wall arranged in the raceway pool body, a pH sensor, a stirring paddle for promoting algae liquid to flow in a ring along the raceway pool body, a carbon replenishing device for adjusting the pH value of the algae liquid, and an ammonia water replenishing device for replenishing ammonia water; the partition wall isolates the raceway pool body into an annular channel; the pH sensor is located between the carbon replenishing device and the ammonia water replenishing device; the ammonia water replenishing device is located upstream of the carbon replenishing device.

The utility model discloses a kind of high-concentration hemicellulose wastewater treatment systems, it is related to high-concentration hemicellulose wastewater treatment technical field, including the adjusting pool, fenton reaction pool, fenton sedimentation tank, multistage hydrolysis acidification pool and lifting pool connected in order, the adjusting pool water inlet is connected with high-concentration hemicellulose wastewater pipeline, non-ferrous wastewater pipeline and acidic wastewater pipeline, adjusting pool and fenton reaction pool between being provided with dispensing room, and ferrous sulfate storage tank, hydrogen peroxide storage tank and PAM storage tank are provided in dispensing room, ferrous sulfate storage tank and hydrogen peroxide storage tank are connected with fenton reaction pool water inlet respectively, and PAM storage tank is connected with fenton reaction pool, fenton reaction pool is also connected with alkali tank, the fenton sedimentation tank bottom is provided with sludge pump, and the lifting pool water outlet is connected with polymeric ferric sulfate storage tank. Through pre-fenton system combination multistage anaerobic treatment unit realizes the efficient decomposition of hemicellulose, lignin and other refractory substances, and cooperates subsequent advanced treatment to ensure that effluent COD is stable and up to standard.

The invention discloses a preparation method of a heterogeneous catalysis electro-Fenton reaction material, a treatment device and application. The preparation method of the heterogeneous catalysis electro-Fenton reaction material comprises the following steps: measuring columnar activated carbon and removing ash on the surface of the columnar activated carbon; removing grease and inorganic salt in the columnar activated carbon; cleaning and drying the treated columnar activated carbon to obtain a pretreated activated carbon carrier; in a nitrogen atmosphere, putting the pretreated activated carbon carrier into a FeSO4 solution, uniformly stirring, and sealing and storing; adding an EDTA solution, and then adding ammonia water; and introducing air, stopping aeration when the pH value is reduced to 4.0-5.0, cleaning, and drying to obtain the heterogeneous catalysis electro-Fenton reaction material. When the voltage of a heterogeneous catalysis electro-Fenton treatment device constructed by the heterogeneous catalysis electro-Fenton reaction material is 1-3V, the removal rate of COD (Chemical Oxygen Demand) on wastewater is greater than or equal to 80%, and after wastewater treatment, the average concentration of COD is less than 25mg / L, and the chromaticity is reduced to 10-30 times.

The invention discloses a plecoglossus altivelis fry rearing device convenient for water changing and cleaning, which comprises a fry rearing pond, a V-shaped precipitation tank is arranged at the bottom of the fry rearing pond, a blow-off pipe with holes is arranged at the bottom of the V-shaped precipitation tank, and a vertical partition plate is upwards arranged on the blow-off pipe; a circulating water tank is arranged at the upper part of one end of the nursery pond and is internally divided into a disinfection cavity and a heating cavity which are communicated with each other, a plurality of ultraviolet disinfection pipes are arranged in the disinfection cavity, an electric heating pipe is arranged in the heating cavity, and a water outlet for communicating the disinfection cavity with the nursery pond is formed in the circulating water tank; a seawater access port, a fresh water access port and a circulating water access port which are communicated with the heating cavity are outwards formed in one side, far away from the nursery pond, of the circulating water tank; and a circulating pump for communicating the nursery pond with the heating cavity is mounted below the circulating water tank of the nursery pond. The device has the function of adjusting the salinity of sea water and fresh water, the salinity of fry breeding water can be accurately controlled, dirt in the pond can be conveniently cleaned, and a healthier environment can be created for fry breeding.

The utility model provides saline-alkali soil water conservancy irrigation equipment, which relates to the technical field of water conservancy treatment and comprises an equipment cart, supporting legs arranged at the bottom of the equipment cart, universal wheels arranged at the bottoms of the supporting legs, a platform arranged on one side of the equipment cart, a standing plate arranged on the top of the platform and a positioning nut arranged on one side of the platform. A storage battery is arranged at the top of the equipment cart, a water tank is arranged at the top of the equipment cart, and a plurality of branch pipes and nozzles are additionally arranged on one side of the main water conveying pipe, so that the branch pipes and the nozzles can more uniformly distribute water to the whole irrigation area during use, local excessive irrigation or insufficient irrigation is avoided, soil moisture distribution is more balanced, and the irrigation efficiency is improved. The irrigation system is simple in structure, convenient to use, beneficial to crop growth, capable of more comprehensively permeating water into soil, better dissolving and taking away salt, reducing soil salinity and alkalinity and improving the soil environment, and when problems occur, a single branch pipe or a sprayer can be more conveniently maintained and replaced, and operation of the whole irrigation system is not affected.

The invention belongs to the technical field of saline-alkali land treatment, and particularly relates to a filtering device for saline-alkali land improvement. The terrestrial heat collecting and desalting devices are connected with the heat exchange station, the terrestrial heat collecting and desalting devices are buried in the saline-alkali soil, and the buried bottom ends of the terrestrial heat collecting and desalting devices extend into a terrestrial heat layer; the terrestrial heat collecting and desalting device comprises a hollow pile, wherein a water inlet communicated with the saline-alkali soil is formed in the side wall of the hollow pile; the heat exchange pile is coaxially and fixedly connected to the inner side of the hollow pile, the bottom of the heat exchange pile extends into the geothermal layer, a saline-alkali cold water cavity is formed between the outer wall of the heat exchange pile and the hollow pile, and the saline-alkali cold water cavity communicates with a heat exchange station outlet through a cold water return pipe; the heat insulation part wraps the heat exchange pile and is located in the saline-alkali cold water cavity; the heat exchange filtering part is used for filtering hot saline water and enabling the filtered hot saline water to enter the heat exchange station; the heat absorption part is used for absorbing geothermal energy; the condensation part is used for condensing water vapor generated by the hot saline water and guiding the water vapor to the saline-alkali soil surface layer.

The invention discloses a graded regeneration method and application of saturated denitrification resin, and belongs to the field of environmental protection and water treatment. The graded regeneration method of the saturated denitrification resin comprises the following steps: S1, flushing the saturated denitrification resin with 0.3 wt%-2wt% of a first regenerant, performing primary regeneration, and collecting to obtain primary regeneration liquid; s2, flushing the denitrification resin subjected to primary regeneration by using 3.5 wt%-6wt% of a second regenerant, performing secondary regeneration, and collecting to obtain a secondary regeneration solution; and S3, flushing the denitrification resin subjected to secondary regeneration by using a flushing agent to obtain the denitrification resin subjected to regeneration. According to the invention, the regenerant with different concentrations is used for graded regeneration to respectively obtain the first-stage regenerated liquid mainly containing high-concentration sulfate and the second-stage regenerated liquid mainly containing high-concentration nitrate and almost containing no sulfate, so that the effects of separating and enriching the sulfate and the nitrate are realized; the recovery of sulfate and the anaerobic denitrification treatment of nitrate are facilitated. The method is simple in process, reasonable in design and easy to industrially popularize.

The invention discloses a photovoltaic device for treating heavy metal soil pollution and an application method thereof, comprising a slope, wherein a solar array and a vegetation array are sequentially arranged on the slope surface of the slope, wherein the solar array is located above the vegetation array, and the solar array and the vegetation array are separated by a horizontally arranged pedestrian and horse path; the solar array comprises a plurality of evenly arranged solar panels, each of which is detachably fixedly matched with the slope through a hollow anchor rod, wherein a lifting anchor is arranged in the hollow anchor rod, and the hollow anchor rod is detachably fixedly matched with the slope through the lifting anchor rod, and the lifting anchor of the solar array is energizedly matched with the solar panel; the vegetation array comprises a plurality of evenly arranged vegetation boxes, and the vegetation boxes are detachably fixedly matched with the slope surface of the slope through anchoring thorns, so as to repair the soil, absorb heavy metals, save energy and protect the environment, and stabilize the slope.

The present invention provides a method for improving the sexual reproduction efficiency of Suaeda salsa, and belongs to the technical field of Suaeda salsa reproduction. The method of the present invention includes collection and storage of Suaeda salsa seeds, pre-sowing vitality detection and management, and planting management; the seed collection includes collecting Suaeda salsa seeds with a moisture content of ≤10% and a purity of ≥95%; the storage conditions are temperature ≤10°C and relative humidity ≤75%; the pre-sowing vitality detection includes a germination rate of more than 85%, and the pre-sowing management includes soaking seeds in fresh water for 6-10h; the planting management includes planting in spring, applying basal fertilizer to the soil available N content of ≥120mg / kg, and irrigating fresh water once in spring and summer. The present invention manages the collection and storage of Suaeda salsa seeds, performs vitality detection before sowing, and adjusts the planting management method, so as to promote the germination of Suaeda salsa seeds and the growth of seedlings, and improve the sexual reproduction efficiency of Suaeda salsa.

The invention discloses a test device for rapid identification of saline-alkaline tolerant plants, and relates to the technical field of plant test devices. The device comprises a saline water table, a plurality of uniformly distributed soil cultivation pots are placed at the top of the saline water table, a plurality of liquid conveying pumps are fixedly installed at the top of the saline water table, the positions of the liquid conveying pumps correspond to the positions of the soil cultivation pots, and a concentration adjusting box is arranged in the saline water table; a water pumping pipe is fixedly mounted at the water inlet end of each soil cultivation pot, and one end of each water pumping pipe extends into the saline water table to be communicated with the concentration adjusting box. By arranging the three-way cultivation pipe, high-concentration saline water can be conveyed to improve the salinity and alkalinity, or clear water can be conveyed to reduce the salinity and alkalinity, so that the specific salinity and alkalinity interval corresponding to the saline-alkaline tolerance of plants can be quickly determined, and meanwhile, the three-way cultivation pipe, the semicircular pipe frame and the soil fixation mesh can play a role in soil fixation; soil near the root system is prevented from being loosened and corroded due to water flow impact.

The invention belongs to the technical field of soil improvement materials, and relates to a thin-layer nanosheet carbon material as well as a preparation method and application thereof. The invention provides a preparation method of a thin-layer nanosheet carbon material, which comprises the following steps: preparing a straw main stem part into powder, carrying out dipping treatment by adopting dilute nitric acid, carrying out pyrolysis, and then carrying out dipping oxidation treatment by adopting concentrated nitric acid to obtain biochar. After the thin-layer nanosheet carbon material provided by the invention is mixed with the saline-alkali soil, the leaching of sodium ions in the saline-alkali soil can be improved.

The invention belongs to the technical field of saline-alkali soil planting, and particularly relates to a saline-alkali soil test field shallow-layer saline-alkali-resistant sowing method which comprises the following steps: performing rotary tillage leveling operation on soil of a field; a paper support wrapped with a water-retaining agent is applied into the plough layer soil, and the water-retaining agent forms a water-retaining area in the soil; sowing is conducted in the plough layer, and the sowing position is located above the water retention area. The sowing method can reduce evaporation of water in soil, improve the utilization rate of water and fertilizer by crops and reduce the application amount of the fertilizer, so that the salinization degree of the soil is effectively reduced.

The invention relates to the technical field of saline-alkali dry farmland improvement. The invention provides a modifier for saline-alkali dry farmland as well as application and a use method of the modifier. The modifier comprises the following components in parts by weight: 25-35 parts of corn straws, 27-31 parts of corncobs, 17-23 parts of peanut shells, 13-17 parts of soybean meal, 4-6 parts of humic acid, 0.4-0.6 part of polyglutamic acid and 0.4-0.6 part of wood vinegar powder. The multifunctional bio-based modifier provided by the invention is suitable for improvement and utilization of moderately severe saline-alkaline dry farmland, effectively reduces the saline-alkaline degree, increases the content of organic matters and nutrients, and promotes the growth of plants. After the fertilizer is applied for 2-3 years, the normal cultivation level is reached, long-term cultivation and utilization of moderate and severe saline-alkali soil can be realized by combining conventional soil improvement and fertilization measures, the cultivated area is supplemented, the per unit yield of crops is improved, and the national grain safety is guaranteed. The multifunctional bio-based macromolecular modifier has great application prospect and popularization potential in improvement and utilization of moderate and severe saline-alkali soil.

This utility model discloses a nanofiltration membrane module for acid and alkali resistant high-salt wastewater, relating to the field of wastewater treatment technology. It includes a filtration chamber, inside which a nanofiltration membrane body is fixedly installed. The input end of the filtration chamber is fixedly connected to a wastewater pretreatment chamber, which includes a chamber body, a stirring assembly, a neutralization assembly, a water quality monitor, a wastewater output pipe, and a control terminal. In this utility model, the water quality monitor monitors the acidity, alkalinity, and salinity of the wastewater. The monitoring data is transmitted to the control terminal, which outputs corresponding control commands to open the corresponding secondary electrically controlled valve. The neutralization solution inside the solution storage tank enters the chamber body through the secondary electrically controlled valve and the solution output pipe, neutralizing the wastewater or settling salt ions in the wastewater, thereby reducing the acidity, alkalinity, or salinity of the wastewater and preventing corrosion of the nanofiltration membrane body.

The invention relates to the technical field of corn planting, in particular to a method for planting corn in Xinjiang saline-alkali soil and application of the method. The invention provides a method for planting corn in Xinjiang saline-alkali soil, which comprises the following steps: laying a drip irrigation tape and a mulching film on the saline-alkali soil to obtain a planting area; the adjacent side or two sides of the planting area are salt enrichment areas; carrying out drip irrigation on the planting area for 2-6 times by adopting a drip irrigation mode under a plastic film, and carrying out drip irrigation for 5-10 days at the time interval of two adjacent times of drip irrigation, so as to obtain the treated planting area; punching and sowing are carried out in the treated planting area. According to the method, film mulching is combined with drip irrigation watering, and salt can be transferred to a salt enrichment area between the films. The salt and alkali in the film mulching planting area are reduced to a degree suitable for corn cultivation, and then the film surface is punched and sown, so that the adverse effects of salt and alkali on corn germination, seedling emergence and growth and development can be greatly relieved, and the yield of corn is improved.

The utility model discloses a sludge modification device for saline-alkali soil improvement and green planting, which relates to the technical field of saline-alkali soil improvement and green planting and comprises a feeding part, a mixing part, a chemical adding part and a microbial culture part, and the chemical adding part is used for adding chemical modifiers into a stirring tank. Sludge is conveyed into the stirring tank through the arranged feeding part, the mixing part and the chemical adding part are controlled to be started, a chemical modifier is added while the sludge in the stirring tank is stirred, the pH value of the sludge is adjusted, the salinity and alkalinity are reduced, the soil structure is improved, the soil fertility is improved, and the air permeability and the water-retaining property of the soil are enhanced; then, an attached growth space is provided for microorganisms through the arranged microorganism culture part, and the temperature in the stirring tank is adjusted through the heating cylinder, so that growth and metabolism of the microorganisms are promoted; the technical problems that an existing sludge transformation device for saline-alkali soil improvement and green planting is single in sludge treatment mode and lacks microbial culture and reaction environments are solved.

The invention discloses a method for preparing a low-salt fish sauce by rapid fermentation of composite microorganisms, and belongs to the technical field of food processing. The preparation method of the invention specifically comprises the following steps: cleaning marine fish and removing the internal organs to prepare minced meat; performing composite enzymatic hydrolysis on the minced meat and then killing enzymes at high temperature; preparing seed koji using Lactobacillus plantarum, Saccharomyces rouxii, Aspergillus oryzae and Bacillus subtilis, and using the seed koji for fermentation of minced meat; after the fermentation is completed, performing impurity removal and sterilization, ultrafiltration purification and nanofiltration desalination and fishy removal to obtain a low-salt fish sauce. The fish sauce prepared by the invention has low salt content, short fermentation cycle, high amino acid nitrogen content, clear color, strong sauce-flavored seafood flavor, and high antioxidant performance and uric acid-lowering activity, meeting the needs of consumers for healthy and delicious food.

The invention discloses a slow release fertilizer special for quinoa in saline-alkali soil and a preparation method thereof. The slow release fertilizer special for quinoa in saline-alkali soil is prepared from, by mass, 30-50 parts of sophora alopecuroide straw, 20-30 parts of grape skin residues, 20-30 parts of sheep manure, 3-5 parts of plant ash, 15-20 parts of fulvic acid, 8-12 parts of amino acid, 8-12 parts of calcium superphosphate, 5-10 parts of zinc sulfate, 9-15 parts of manganese sulfate, 6-9 parts of ferrous sulfate, 6-9 parts of copper sulfate, 3-10 parts of boric fertilizer, 5-10 parts of sodium alginate, 5-15 parts of bentonite, 10-15 parts of granulation adhesive and 20-40 parts of coating agent. The invention discloses a preparation method of a slow release fertilizer special for quinoa in saline-alkali soil. Compared with the prior art, the soil structure of the saline-alkali soil can be improved, the salinity and alkalinity are reduced, a good growth environment is provided for quinoa growth, and the quinoa quality is improved while the yield of the quinoa in the saline-alkali soil is increased.