77results about How to "Improve ability" patented technology

The invention relates to the technical field of biochar preparation materials, and discloses a preparation method of a modified coal gangue-municipal sludge-based biochar soil conditioner, which comprises the following steps: crushing a coal gangue raw material and a municipal sludge raw material to obtain coal gangue powder and municipal sludge powder; the coal gangue powder and the municipal sludge powder are leached to obtain leached coal gangue powder and leached municipal sludge powder, the leached coal gangue powder and the leached municipal sludge powder are mixed to obtain mixed solid waste powder, the mixed solid waste powder is pyrolyzed to obtain pyrolyzed biochar, the pyrolyzed biochar is acidized to obtain acidized biochar, and the acidized biochar is acidized to obtain acidized biochar. The acidified biochar is subjected to ball milling, and first modified biochar is obtained; active sites of the first modified charcoal are increased, and the target charcoal soil conditioner is obtained. The soil improvement effect of the biochar can be improved.

The invention discloses an optical imaging lens. The optical imaging lens comprises a lens barrel, an optical lens group and a spacing element group, wherein the optical lens group and the spacing element group are arranged in the lens barrel. The optical lens group sequentially comprises a first lens with negative focal power, a second lens with positive focal power and a third lens with positive focal power from the object side to the image side along the optical axis. Wherein the object side surface of the first lens is a concave surface, and the image side surface is a concave surface; the image side surface of the second lens is a convex surface; the object side surface of the third lens is a convex surface. The spacer element group includes a second spacer element disposed on and in contact with the image side surface of the second lens. Half Semi-FOV of the maximum field angle of the optical imaging lens meets the following condition: 71 degrees < Semi-FOV < = 74.5 degrees; and the Abbe number V2 of the second lens, the inner diameter d2s of the object side surface of the second spacing element and the inner diameter d2m of the image side surface of the second spacing element meet the condition that V2 / (d2s + d2m) is greater than 3.20 mm <-1 > and less than 5.60 mm <-1 >.

The invention discloses a saline alkali soil conditioner and a preparation method thereof, and belongs to the technical field of soil improvement. The soil conditioner is prepared from the following raw materials in parts by weight: 100-200 parts of modified phosphogypsum, 5-10 parts of a microbial agent and 10-20 parts of an activating agent, the modified ardealite is prepared by compounding ardealite and modified coal gangue and then modifying with rare earth; the microbial agent is prepared by mixing bacillus subtilis, streptomyces cellulosae and bacillus mucilaginosus. Chemical-physical-biological improvement technologies are combined, so that the physical and chemical properties of the saline-alkali soil are effectively improved, the biological activity of the soil is improved, the growth of crops is promoted, the yield and disease resistance of the crops are improved, and the resource utilization rate of the ardealite is increased.

The present invention belongs to the field of agricultural technology, and in particular to a soil improvement device for mountain orchards. The following scheme is proposed, including a plate body, the four corners of the bottom of the plate body are connected to support legs by bolts, and a moving wheel is arranged on one side of the support legs, a soil loosening mechanism is arranged between two adjacent support legs, a liquid storage tank is connected to one side of the top of the plate body by bolts, and a box cover is connected to the top of the liquid storage tank by bolts, a liquid inlet is provided through the top of the box cover, and a sealing plug is provided on the inner wall of the liquid inlet, a connecting port is provided through the top of the plate body, and an adjusting mechanism is provided on the inner wall of the connecting port, and a soil improvement mechanism is arranged between the top and bottom of the support plate. In the present invention, the soil on both sides is processed by a scraper to prevent the soil from splashing to both sides due to the stirring force during the stirring and improvement, thereby causing the soil to be lost, and then affecting the growth of fruit trees.

The invention provides a bio-organic fertilizer preparation process based on a microbial fermentation technology, and relates to the technical field of organic fertilizer preparation, the process comprises the following steps: S1, raw material preparation: selecting different types of animal and plant wastes as organic raw materials, and pre-treating to adjust the physical properties of the organic raw materials so as to facilitate subsequent fermentation; s2, proportioning and adjusting: adjusting the carbon nitrogen ratio of the raw materials according to the characteristics of the raw materials, in the invention, through reasonable pretreatment of the raw materials and accurate adjustment of the carbon nitrogen ratio, the fermentation environment is improved, the degradation efficiency of microorganisms on organic matters is significantly improved, in the pretreatment step, by adjusting the physical properties of the raw materials, the contact area of the microorganisms and the organic matters is increased, and the degradation efficiency of the microorganisms on the organic matters is improved; the carbon-nitrogen ratio control during proportioning enables microorganisms to perform metabolic reaction more efficiently, the problem of nutrition imbalance in the fermentation process is reduced, the stability of the fermentation process is ensured by the optimization, and the overall quality of the organic fertilizer is improved.

The invention discloses a saline-alkali soil improvement method based on a low-salt organic material. The method comprises six steps of saline-alkali soil detection, organic material selection, organic material pretreatment, organic material application, soil irrigation and soil pH value adjustment. According to the steps of organic material pretreatment and organic material application, it is ensured that the saline-alkali soil fertilization improvement effect is good, the method has the advantage of being good in improvement effect, and the problems that in the using process of an existing saline-alkali soil improvement method, in the using process, low-salt organic materials are inconvenient to efficiently improve the saline-alkali soil, and the soil quality is poor are solved. The problems that if low-salt organic materials cannot be fully utilized, the soil improvement effect may not be obvious, soil salinity cannot be effectively reduced, the soil structure cannot be effectively improved, supplement of the organic materials is lacked, the organic matter content of the soil is difficult to increase, and the fertility and the water and fertilizer retention capacity of the soil are affected are solved.

The invention belongs to the technical field of soil improvement, and particularly relates to a preparation method and processing equipment of a soil conditioner. A biomass raw material is added into monocalcium phosphate to be mixed, then the mixture is added into a material conveying pipe and passes through a pyrolysis device, the pyrolysis device comprises three heaters used for controlling three different temperature areas, the pyrolysis temperature is gradually increased to 500 DEG C from 300 DEG C, generated biomass charcoal is cooled and enters a cyclone separator to be mixed with humus soil, and the humus soil is separated from the biomass charcoal. After mixing, the mixture enters a collector to be continuously stirred and mixed, and meanwhile, liquid bio-oil generated by cooling in the cooling tower is sprayed to the collector through a spraying system to be mixed with the mixture; according to the present invention, the carbon fixation ability of the soil is improved, the soil structure is improved, a variety of plant growth elements are provided, the soil fertility is improved, the growth of microorganisms is promoted, the soil improvement effect is improved, the occurrence of plant diseases and insect pests is inhibited, and the healthy growth of crops is promoted.

The invention discloses a liquid fertilizer formula prepared by compounding a tylosin finished product liquid and other components, and relates to the technical field of fertilizer preparation, and the liquid fertilizer formula comprises the steps of special pretreatment of tylosin, auxiliary compounding, nutrient substance addition and quality detection post-treatment. Certain carbon-carbon bonds, carbon-hydrogen bonds and other chemical bonds in tylosin molecules and byproducts thereof can be broken and recombined under bombardment of active particles, more functional groups with high activity are generated, the biological activity of the finished tylosin liquid can be enhanced, the finished tylosin liquid can be more easily compounded with other components in the subsequent process, and the stability of the finished tylosin liquid is improved. A stable compound with better synergy is formed by means of chemical bonding, hydrogen bonding and the like, ultrasonic waves are uniformly spread in a supercritical carbon dioxide medium, generated high-frequency vibration, cavitation effect and the like act on all the components, and the agglomeration phenomenon possibly existing among the components is further broken.

The invention relates to the technical field of soil remediation, and particularly discloses a rapid soil improvement process which comprises the steps of parameter acquisition, use amount decision, putting, maintenance monitoring and the like: firstly, calculating various put substances, and then accurately putting the substances into soil work according to the calculated amount; the investment cost of soil improvement can be reduced to the greatest extent after accurate calculation; according to the technology, the half-cooked straw fed in the technology is continuously fermented to the maturing stage in the later period, heat generated by decomposition of the half-cooked straw is beneficial for increasing the soil temperature, substances such as ethyl alcohol are generated, pathogenic bacteria, nematodes and the like in soil can be killed under the action of high temperature and ethyl alcohol, meanwhile, carbon dioxide generated in the straw after-ripening stage can generate air pressure under the film covering condition, and the soil temperature is increased. Original hardened soil blocks are broken through, generated substances such as polysaccharide and natto gum act together with straw fibers to form an aggregate structure, and the soil improvement effect is further improved.

The invention belongs to the technical field of medical equipment, and relates to reaction training equipment for preventing senile dementia, which comprises a training box, a cross beam and a training plate, each first finger ring is connected with the training plate through a first elastic rope, a second finger ring is arranged in each first finger ring, each second finger ring is connected with the corresponding first finger ring through a plurality of second elastic pieces, and the second elastic pieces are evenly arranged around the second finger rings; the plurality of placing trays are horizontally arranged at the upper part of the training box and are uniformly arranged along the length direction of the cross beam, each placing tray is fixedly provided with a training ball, and the volumes of the plurality of training balls are different. The number of the fingers matched with the thumb can be selected according to the size of the training ball to grab the training ball, cooperative cooperation between the fingers is trained, the ability of the fingers to execute fine actions through cooperative cooperation is improved, the degree of stimulation to the brain is increased, the improvement effect of the cognitive field is improved, and therefore the prevention effect of senile dementia is improved.

A soil property improving device for land improvement relates to the technical field of soil improvement and comprises a movably arranged supporting base, a plurality of improving substance adding mechanisms are horizontally arranged on the top of the supporting base side by side, a refining assembly is arranged above the supporting base, and the refining assembly is fixedly communicated with the plurality of improving substance adding mechanisms. A leveling assembly is arranged at the position, below the improved substance adding mechanism, of the bottom of the supporting base, and a traction assembly is fixedly arranged at the top of the supporting base. The improved substance adding mechanism comprises a fixed hopper, a connecting pipe, a connecting hopper and a fixed pipe which are fixedly communicated in sequence from top to bottom, a lower port of the fixed pipe penetrates through the supporting base and is fixedly connected with the supporting base, and an upper port of the fixed hopper is sealed. The problem that an existing soil improvement device is poor in continuous operability in the soil improvement process is solved; the problem that substances are not uniformly distributed in the soil is solved; and the problem of poor adjustability of the feeding amount of the improved substance is solved. And the soil refining degree is poor.

The invention relates to the technical field of fish meat freezing and fresh-keeping, in particular to refrigerating fluid capable of remarkably improving the fish meat freezing quality. The refrigerating fluid is prepared from the following components in percentage by mass: 10 to 15 percent of ethanol, 1 to 3 percent of chitosan, 1.0 to 2.5 percent of rhizoma polygoni cuspidati extract, 0.05 to 0.15 percent of spearmint extract, 2 to 5 percent of malic acid and the balance of deionized water. The freezing method is dipping freezing, the fish meat is dipped in a pre-cooled freezing liquid and then is subjected to cryopreservation, and the freezing temperature is-18 DEG C to-38 DEG C. The preparation method of the refrigerating fluid comprises the following steps: adding the chitosan into the malic acid and the deionized water, and uniformly stirring to obtain a solution A; sequentially adding ethanol and spearmint extract into the solution A, and stirring; and adding the polygonum cuspidatum extract, stirring and homogenizing. According to the freezing liquid, the freezing rate of fish meat can be remarkably increased, mechanical damage to muscle fibers caused by repeated formation of ice crystals is greatly reduced, the influence of temperature fluctuation on the quality of the fish meat is reduced, and the influence of freezing on the quality of the fish meat is reduced to the maximum extent.

The invention provides a soil conditioner as well as a preparation method and application thereof, and belongs to the technical field of soil remediation. The soil conditioner is prepared from the following raw materials in parts by weight: 24 to 550 parts of SiO2, 100 to 150 parts of Al2O3, 10 to 30 parts of Fe2O3, 9 to 25 parts of FeO and 1 to 6 parts of TiO2. All the raw materials of the soil conditioner have a synergistic effect, so that the pH value of soil is increased, acidified soil is improved, the content of organic matters in the soil can be increased, and the enzymatic activity in the soil can be adjusted, so that the improvement effect of the acidified soil is improved, a better environment is provided for growth of crops, and the yield and quality of the crops are improved.

The present disclosure relates to a composition for increasing the efficacy of a retinoid by comprising a retinoid and a material for increasing the efficacy of a retinoid, i.e., a retinoid enhancer. The composition for improving skin wrinkles according to the present disclosure can significantly improve the skin wrinkle improving effect of retinoid by inhibiting a mechanism of oxidative decomposition of retinoic acid by a CYP family enzyme through a specific retinoid enhancer compound.

The invention relates to the technical field of agricultural mechanical equipment, in particular to soil fertilization improvement equipment which comprises a loosening mechanism used for breaking hardened soil on the surface layer of the ground, the loosening mechanism comprises a mounting frame, and the mounting frame is fixedly connected with a tractor body. According to the invention, the piston column is driven to descend to press air into the pressurizing box, then chemical fertilizer can be conveyed into the fertilizer discharging pipe together with the air by the hose, and then is discharged through a plurality of fertilizer conveying columns in the transverse shovel column, so that the fertilizer conveying columns are prevented from being blocked by soil while the chemical fertilizer is conveyed; in the process that the deep ploughing mechanism is used for deep ploughing and further outputting soil, chemical fertilizer is applied into deep soil through a plurality of fertilizer conveying columns, and a screw rod can be driven to rotate through a rotating block according to needs, so that the height of a transverse shovel column is adjusted, and the chemical fertilizer application depth can be adjusted according to different soil and plants; therefore, the fertilization improvement device can be used under various soil conditions.

The present invention provides a ready-to-use mesoporous mineralized silk fibroin microsphere and a preparation method and application thereof. SilMA hydrogel microspheres are prepared by a photocrosslinking oil / water emulsification method, and then dry mesoporous mineralized SilMA microspheres (mSilMA for short) are prepared by combining biomimetic mineralization with a critical point drying method. Silk fibroin materials that are not easily degraded and have good biocompatibility are selected as carriers to solve the problems of easy loss and inability to retain BMP-2 for a long time; biomimetic mineralization forms a calcium phosphate coating to achieve efficient loading and controlled release of BMP-2; critical point drying forms a mesoporous structure, which is conducive to drug loading and release. mSilMA is applied to BMP-2 loading and controlled release, with high protein loading efficiency and long-term low-volume sustained release. The present invention has simple ingredients, mild preparation conditions, and is easy to obtain, providing a new approach for bone defect repair and has broad clinical application prospects.

The utility model discloses a device for improving orchard saline-alkali soil, which relates to the technical field of saline-alkali soil improvement, and comprises a spraying mechanism, a water purifying mechanism is arranged in the spraying mechanism, the spraying mechanism comprises a water tank, a tooth groove is clamped on the surface of the water tank, and a limiting groove is arranged on the surface of the water tank. The surface of the tooth groove is connected with a gear in a meshed mode, and one end of the gear is fixedly connected with a T-shaped limiting rod. The driving motor operates to drive the gear to rotate, the water tank can be driven to rotate through the tooth groove, the T-shaped limiting rod is sleeved with the limiting groove to rotate synchronously, under the action of the T-shaped limiting rod, the position of the limiting groove is limited, the stability of the water tank is improved, the water pumping pipe and the spraying head rotate along with the limiting groove, and the first water pump in the water pumping pipe operates to drive the water tank to rotate. And water in the water tank is pumped into the water pumping pipe and the spraying head, so that fresh water is sprayed more comprehensively, and the saline-alkali soil improvement effect is improved.

The utility model provides a saline-alkali soil salt-isolating salt-discharging greening device which comprises an irrigation assembly and a salt discharging assembly, the irrigation assembly comprises an irrigation pipe and a water pumping assembly, the irrigation pipe is laid in an improved soil layer and connected with the water pumping assembly, and liquid flows into the irrigation pipe through the water pumping assembly so as to irrigate the improved soil layer; the salt discharging assembly comprises a salt discharging pipe, the salt discharging pipe is laid in the salt-alkali layer, the salt-alkali layer is located on the lower layer of the improved soil layer, and the salt discharging pipe is used for collecting liquid; the discharging assembly comprises a collecting box and a discharging pipe, one end of the collecting box is connected with the salt discharging pipe, the other end of the collecting box is connected with the discharging pipe, and the discharging pipe is used for discharging liquid in the collecting box; a gravel layer is arranged between the saline-alkali layer and the improved soil layer, and the filter membrane is arranged between the gravel layer and the saline-alkali layer and used for filtering liquid. The saline-alkali soil salt-isolating and salt-discharging greening device solves the technical problem that in the prior art, saline-alkali soil improvement is difficult to operate.

This invention discloses an adenine-based heat stabilizer and its application in PVC composites, belonging to the field of heat stabilizer technology. The heat stabilizer is an adenine-based substance or a compound of an adenine-based substance and an auxiliary stabilizer. The adenine-based substance is adenine or adenine nucleoside, and the auxiliary stabilizer is at least one of calcium salt stabilizers, zinc salt stabilizers, and polyol stabilizers. This adenine-based heat stabilizer can improve the initial whiteness of PVC and impart better long-term stability to PVC. Its application in PVC composites can effectively improve the thermal stability and mechanical properties of PVC composites, possessing practical application value.

The invention provides a land improvement machine for plateau grassland ecological restoration, and relates to the technical field of land improvement, the land improvement machine comprises a vehicle frame seat, a plurality of wheels are fixedly arranged on the bottom surface of the vehicle frame seat, a vehicle head body is fixedly mounted at one end of the top surface of the vehicle frame seat, and a control terminal is fixedly arranged on one side surface of the vehicle head body; a vehicle seat is fixedly installed on the surface of the top of the vehicle frame seat, a soil turning assembly is arranged at the other end of the surface of the top of the vehicle frame seat, a soil loosening assembly is arranged on the surface of one side of the soil turning assembly, the soil turning assembly comprises an inclined plate, and the inclined plate is fixedly installed at the other end of the surface of the top of the vehicle frame seat. According to the device, the second motor drives the multiple soil turning shovels to rotate, meanwhile, the first motor drives the threaded rod to rotate, the multiple soil turning shovels can be adjusted in the vertical direction, the soil turning depth of the soil turning shovels can be adjusted, the device is suitable for soil of different adjustments, and the effect of improving the plateau grassland ecological land is improved.

The invention discloses a high standard farmland-based soil improvement device, which comprises a support frame, a rotary cultivator and a bearing frame, the bearing frame is provided with two storage boxes for storing a soil improvement agent, the bottom of each storage box is provided with a plurality of digging teeth, and the digging teeth are arranged at equal intervals along the length direction of the corresponding storage box; the bottoms of the digging teeth incline towards the rotary cultivator, the bottom ends of the digging teeth are flush with the bottom ends of rotary tillage cutter teeth of the rotary cultivator, and material scattering holes are formed in the bottom positions of the sides, away from the rotary cultivator, of the digging teeth in a penetrating mode and communicate with the corresponding storage boxes. According to the soil conditioner, deep improvement of the soil can be achieved, that is, the soil conditioner can be scattered into the deeper position of the soil, the risk of volatilization of ammonia-containing substances in the soil conditioner is reduced, and therefore the soil improvement effect is guaranteed.

The invention relates to the technical field of soil improvement, in particular to an ecological soil improvement method for a hilly area, which comprises the following steps: planting robinia pseudoacacia saplings to a field in spring; collecting robinia pseudoacacia fallen leaves after the robinia pseudoacacia fallen leaf period begins, returning the robinia pseudoacacia fallen leaves to the field, and removing the robinia pseudoacacia from the field after the robinia pseudoacacia The problems of soil acidification and organic matter content reduction in the hilly area, influence on a soil ecosystem, inhibition of normal growth of crops, and reduction of quality and yield of agricultural products can be solved.

The invention discloses a polyacrylamide derivative and application thereof in saline-alkali soil improvement, and relates to the technical field of soil improvement. The preparation method of the polyacrylamide derivative comprises the following steps: (1) mixing and dissolving water, sodium sulfate, ammonium sulfate and PEG; (2) adding acrylamide, disproportionated rosin resin acid vinyl ester and methacrylic acid, and completely dissolving; and (3) dissolving ammonium persulfate, potassium bromate and sodium hydrogen sulfite in water, mixing with the substances, heating to 50-70 DEG C, carrying out heat preservation reaction for 5-12 hours, and drying the obtained product to obtain the polyacrylamide derivative. The polyacrylamide derivative disclosed by the invention is polymerized by adopting specific monomers, so that the salt-reducing and alkali-reducing effects of the polyacrylamide derivative are improved.

The utility model belongs to the technical field of acid soil improvement, and particularly relates to an acid soil improvement device for agricultural planting, which comprises a U-shaped frame. A group of connecting rods are arranged at the bottom end of the U-shaped frame, and the bottom ends of the connecting rods are fixedly connected with soil ploughing cutters; the overlook cross section of the ploughing cutter is an isosceles triangle, and the inclined surfaces on the two sides of the ploughing cutter are arc-shaped; a first groove is formed in the bottom end of the ploughing cutter; a spray head is mounted in the first groove; a hose is arranged on the spray head; a liquid box is fixedly connected to the side wall of the U-shaped frame; a cover plate is mounted at the top end of the liquid box through bolts; the top end of the cover plate is fixedly connected with a feeding pipe; a discharging pipe is arranged on the side wall of the liquid box; valves are arranged on the discharging pipe and the feeding pipe; the utility model provides an acid soil improvement device for agricultural planting, aiming at solving the problem that the improvement effect is greatly influenced because a modifier is difficult to immerse into soil under the influence of high-temperature weather or harder soil.

The utility model relates to farmland soil improvement equipment, which belongs to the technical field of soil improvement and comprises a vehicle body frame, a support frame is fixedly connected to the inner wall of the front end of the vehicle body frame, a hydraulic rod is arranged at the upper end of the support frame, and an adjusting block is fixedly connected to the telescopic end of the hydraulic rod. The plowing device has the advantages that the height of the plowing support is adjusted, the plowing support can adapt to different working scenes and soil conditions, the contact depth of the plowing support and soil is controlled, and therefore the adaptability and the working efficiency of the plowing device are improved; the fixing blocks conduct damping and buffering in the supporting blocks through damping springs and damping supporting rods, collision caused when the ploughing support makes contact with hard protruding blocks is avoided, vibration and impact generated in the working process of the ploughing support can be reduced, the equipment can be protected through the damping and buffering functions, the service life of the equipment is prolonged, and the practicability is high. And the stability and quality of ploughing operation can be improved.

The invention provides ready-to-use mesoporous mineralized silk fibroin microspheres and application thereof. SilMA hydrogel microspheres are prepared by a photo-crosslinking oil / water emulsification method, and then dry mesoporous mineralized SilMA microspheres (mSilMA for short) are prepared by combining biomimetic mineralization and critical point drying methods. A silk fibroin material which is not easy to degrade and has good biocompatibility is selected as a carrier, so that the problems that BMP-2 is easy to lose and cannot be retained for a long time are solved; a calcium phosphate coating is formed through biomimetic mineralization, so that efficient loading and controlled release of BMP-2 are realized; the critical point is dried to form a mesoporous structure, which is beneficial to drug loading and release. The mSilMA is applied to BMP-2 loading and controlled release, the protein loading efficiency is high, and long-acting low-amount slow release can be achieved. The composition is simple in component, mild in preparation condition and easy to obtain, provides a new way for bone defect repair, and has a wide clinical application prospect.

The utility model relates to the technical field of ultraviolet disinfection equipment, in particular to a filter screen improving device for a built-in air conditioner of the ultraviolet disinfection equipment. Comprising a supporting long table, a supporting vertical plate and a connecting column. Mounting assemblies are fixedly mounted on the front side and the rear side of the supporting long table, a first storage assembly is fixedly mounted on the top of the supporting long table, a first limiting long groove is formed in one side of each supporting vertical plate, a first threaded groove and a second threaded groove are formed in the other side of each supporting vertical plate, and the number of the supporting vertical plates is two; a second storage assembly is slidably mounted between the two supporting vertical plates, first limiting assemblies are slidably mounted on the outer surfaces of the supporting vertical plates, limiting rings are fixedly mounted on the outer surfaces of the ends, close to the supporting long table, of the connecting columns, and second limiting assemblies are fixedly mounted at the ends, close to the supporting long table, of the connecting columns; third limiting assemblies are rotationally mounted on the outer surfaces of the ends, close to the long supporting table, of the connecting columns. The technical problems of poor improvement effect and poor use effect are solved.

The invention provides a method for improving the quality of corn in saline-alkali soil, and belongs to the technical field of soil improvement. The method comprises the following steps: (1) uniformly spreading an organic fertilizer, a base fertilizer and a modifier on the surface of a land after watering and air-drying the land, and preparing the land by using a deep ploughing machine; (2) topdressing: topdressing urea in the small horn mouth, large horn mouth, heading and grouting early and middle periods of corn; (3) irrigation: irrigating from a seedling stage to a middle grouting stage; (4) after the corn is mature, harvesting the corn; according to the method, base fertilizer and organic fertilizer are applied before soil preparation, it is guaranteed that after corn sprouts, corn roots can absorb nutrient substances needed by growth and development from the soil, root growth is promoted, and the survival rate of the corn is increased; in addition, the modifier is applied before soil preparation, and the modifier is mixed with other components for use, so that the soil improvement effect of the modifier is obviously improved, and the yield and quality of the planted corn are obviously improved.

The utility model provides a saline-alkali land treatment device which comprises a cylinder body, the cylinder body comprises an outer cylinder, an inner cylinder and a bottom plate, the outer cylinder is arranged on the inner cylinder in a sleeved mode, the outer cylinder and the inner cylinder are both connected with the bottom plate, a planting cavity is formed between the inner cylinder and the bottom plate, plants are planted in the planting cavity, and an improved cavity is formed between the inner cylinder and the outer cylinder; through holes are formed in the outer cylinder, the inner cylinder and the bottom plate, one-way water seepage films are arranged on the inner wall of the outer cylinder, the inner wall of the inner cylinder and the bottom plate, and water in soil flows into the planting cavity and the improvement cavity through the through holes so that the water can stay in the planting cavity and the improvement cavity. The saline-alkali land treatment device solves the technical problems of high cost and high difficulty in saline-alkali land treatment in the prior art.

The present application relates to the technical field of hair care essential oil, and particularly relates to a hair care essential oil composition containing rosemary leaf oil and mint oil. The hair care essential oil composition contains 75-80 parts of cyclopentasiloxane, 8-11 parts of dimethicone, 8-11 parts of isohexadecane, 0.1-0.5 parts of tocopheryl acetate and 2.6-3.6 parts of plant essential oil by mass. The plant essential oil contains essential oil A and essential oil B. The essential oil A contains rosemary leaf oil and mint oil, and the essential oil B is prepared from pomelo pericarp, hyptis and perilla leaf by a specific process. The preparation process involves intermittent microwave treatment, cellulase enzymolysis, co-water distillation extraction and other processes. The hair care essential oil composition provided in the present application is compounded with specific plant essential oil in a traditional hair care formula, successfully endows the product with good antidandruff effect on the premise of basically maintaining the original softening care effect.