136results about How to "Increase infiltration rate" patented technology

The invention discloses a saline-alkali land soil conditioner and a preparation method thereof. The saline-alkali land soil conditioner is prepared by adding water in citric acid, polymaleic acid-acrylic acid copolymer, sodium polycrylate and fatty alcohol-polyoxyethylene ether. The preparation method comprises the following steps: weighing raw materials in weight proportioning; adding partial water in a reaction kettle for heating to 50-60 DEG C; adding the fatty alcohol-polyoxyethylene ether, the polymaleic acid-acrylic acid copolymer, the sodium polycrylate and the citric acid in the reaction kettle in turn for fully dissolving; subsequently, adding rest water in the reaction kettle and cooling to 20 DEG C; and after sampling and qualified inspection, measuring and packaging to form a finished product. By using the conditioner, the physical and chemical properties of the saline-alkali soil are obviously improved, heavy metal ions are complexed, emulsification and oil removal are achieved, salinity infiltration is accelerated, alkaline of soil is neutralized, and the pH value is regulated; and the desalination amount of the conditioner can reach above 50%, and the conditioner has the advantages of short improvement period, durable management effect and universality, saves water, increases benefits, yield and income and is environment-friendly.

The invention discloses an organic-inorganic improvement fertilizer for saline-alkali soil and a preparation method thereof. The organic-inorganic improvement fertilizer is prepared from, 20-30 parts of bentonite, 20-30 parts of zeolite, 20-30 parts of flue gas desulfurization gypsum, 10-20 parts of dehydrated sludge, 20-30 parts of humic acid, 10-20 parts of coal ash, 20-30 parts of ardealite, 10-20 parts of peat, 10-20 parts of straw meal, 10-20 parts of animal waste, 2-8 parts of microbial inoculation bacteria and 2-5 parts of emulsified asphalt. The invention further provides a preparation method of the organic-inorganic improvement fertilizer for saline-alkali soil. According to the organic-inorganic improvement fertilizer, the physicochemical character of soil can be improved, soil permeability and moisture and fertilizer preservation can be improved, the soil ion exchange rate can be improved, the PH value can be buffered, the chemical fertilizer consumption can be reduced, the crop yield can be improved, the product quality can be improved, the soil improvement effect can be improved, and the soil improvement cycle can be shortened.

A combined cultivation method for water and soil conservation for sloping farmlands relates to cultivation methods for water and soil conservation and solves the problem that using the single cultivation technique for holding water is unsatisfactorily effective. The combined cultivation method includes: firstly, adjusting ridges of sloping farmlands on downward slopes and inclined slopes under ridge plowing adjusted into transverse slope ridges, and adopting contour farming and belt planting; secondly, building ridges, and planting protective plant belts on the ridges; thirdly, subsoiling forfarming; fourthly, performing furrow damming; and fifthly, performing no-tillage conservation tillage. Furrow subsoiling and furrow damming are technically combined and integrated according to soil and weather characteristics of a black soil area, so that water and soil loss is reduced or avoided for sloping farmlands to the greatest extent, water and soil are conserved, water utilization rate isincreased, and crop yield is increased evidently. By the method, soil saturation and infiltration speed ratio is increased by 24.1% in processing treatment, water utilization rate is increased by more than 15%, crop yield is 30kg per mu, and 100 Yuan per mu is increased..

The invention relates to a compound improved conditioner for saline-alkali soil and a preparation method of the compound improved conditioner. The compound improved conditioner comprises the following raw material components: 30-50 parts of an organic conditioner, 40-70 parts of an inorganic conditioner, 10-30 parts of biological conditioner and 5-15 parts of an artificially synthesized conditioner. The preparation method comprises the steps of drying the raw material components until the moisture contents are 4%-8%, grinding the raw material components to be 200-350 meshes, uniformly mixing, adding the mixture into a granulator, and granulating to obtain a finished product. According to the compound improved conditioner, the physical and chemical properties of soil can be improved, the permeability and the moisture and fertility preservation performance of soil can be improved, the ion exchange ratio and the buffer pH value of soil can be increased, the number and the activities of microorganisms in soil can be increased, the soil fertility can be increased, the output and the quality of crops can be increased, the soil improvement effect can be improved, and the soil improvement period can be shortened.

The invention discloses a liquid permeability clad sheet, a manufacturing device of the liquid permeability clad sheet and a manufacturing method of the liquid permeability clad sheet. The liquid permeability clad sheet comprises a first layer sheet and a second layer sheet, the liquid permeability clad sheet is provided with strip-shaped grooves, and cone-shape and three-dimensional openings are formed between the strip-shaped grooves in a horizontal mode. The first layer sheet is bonded with the second layer sheet through the strip-shaped grooves, the cone-shape and three-dimensional openings are provided with flowers hanging on heads, and the flowers hanging on the heads extend towards the lower portion of the second layer sheet. The manufacturing device comprises a punching needle roller, a cooperating roller and a composite punching roller, and heaters are arranged on both the punching needle roller and the composite punching roller. The manufacturing method is adopted by the manufacturing device and carries out the following steps: heating the composite punching roller through the heater, conveying the second layer sheet between the punching needle roller and the cooperating roller to be punched, and conveying the second layer sheet and the first layer sheet between the composite punching roller and the cooperating roller to be punched to composite. By the adoption of the clad sheet, liquid is convenient to seep downwards, the sticky and wet feeling of the skin is reduced, the structure of the manufacturing device is concise in structure and convenient to use, production efficiency of the manufacturing method is good, manufacturing cost is low and effect is good.

The invention discloses a special water retention fertilizer for sweet potatoes and a preparation method thereof. The special water retention fertilizer for sweet potatoes is prepared from the following raw materials in parts by weight: 7-12 parts of available nitrogen (N), 6-9 parts of available phosphorus (P2O5), 20-25 parts of available potassium (K2O), 8-10 parts of sodium polyacrylate, 2-5 parts of polyacrylamide and 5-9 parts of bentonite. The special water retention fertilizer for sweet potatoes has the advantage of scientific nitrogen-phosphorus-potassium nutrient proportion, integrates both fertilizer and water, combines nutrition and water retention, and can enhance the water and fertility retention properties of soil and the water / fertilizer utilization efficiency of the sweet potatoes. When being spread as a base fertilizer at one time before sweet potato ridge forming, the special water retention fertilizer for sweet potatoes can promote the sweet potato root system to absorb water in the rooting and seedling stage, increase the growth rate of the sweet potatoes in the early stage, shorten the field ridge seal time of the sweet potatoes, and reduce the field moisture evaporation; and the contained nutrients are slowly released to prevent the stems and leaves of the sweet potatoes from vigorous growth and promote fruiting of the sweet potatoes, thereby enhancing the yield of the dry farming sweet potatoes.

The invention discloses an absorbent body structure for disposable sanitary products, comprising a surface layer, a bottom layer and an absorbent layer, the absorbent layer at least includes fluffy fibers and absorbent polymer particles, and fluffy fibers and absorbent polymer particles Wrap the material particles to form the wrapping layer of the sheet-packed absorbent layer, and the upper plane of the absorbent layer is provided with at least six channels diverging from the central area to the surroundings, and the channels are close to the outer wall of the wrapping layer, and there are less fluffy shapes. The cavity enclosed by the longitudinal wall at the place of fibers and absorbent polymer particles and the outer wall of the wrapping layer at the place containing less fluffy fibers and absorbent polymer particles; the top layer, absorbent layer and bottom layer pass through sequentially Adhesive bonding secures the connection. The invention has reasonable design, simple structure, simple process, easy manufacture and strong practicability. It has high liquid diffusibility and high liquid infiltration rate, and has good drying properties.

The invention discloses a nutritional type saline-alkali soil modifier which can be used for the improvement and fertilization of the new oasis and the secondary salinization soil, and belongs to the technical field of soil improvement. The modifier comprises the following raw materials in percentage by weight: 50%-70% of furfural residue, 20%-40% of matured sheep manure, 1%-2% of urea, 4%-6% of diammomium phosphate, 2%-4% of potassium chloride, 0.3%-0.5% of zinc sulfate and 0.3%-0.5% of manganese sulfate. The preparation method of the modifier comprises the following conventional steps: mixing the raw materials, grinding and sieving to prepare the nutritional type saline-alkali soil modifier provided by the invention. The modifier integrates the functions of improving saline-alkali soil,fertilizing soil and preserving moisture and fertility; and the production cost is low, the improvement effect is good, and the yield of the crop can be increased obviously.

The invention discloses a rapid absorption type paper diaper. The rapid absorption type paper diaper aims to solve the technical problem that an existing paper diaper absorbs slowly and cannot effectively and completely absorb a large amount of urine in a short time, thereby affecting the health of a baby. The rapid absorption type paper diaper includes a paper diaper body and an absorption core body, wherein the absorption core body comprises a first hydrophilic non-woven fabric cap bag, a flow guiding layer, first absorption cores, cotton yarns, a second absorption core and fluff pulp. The flow guiding layer for transversely partitioning and layering the first hydrophilic non-woven fabric cap bag is arranged on the middle part in the first hydrophilic non-woven fabric cap bag, the flow guiding layer is made of hydrophilic non-woven fibers with transverse isotonicity in a fiber direction, and drainage grooves are transversely and uniformly formed in the surface of the flow guiding layer in a communication mode. Drainage holes are evenly formed in the flow guiding layer in a communication mode, and the first absorption cores are disposed at an equal interval on the upper part of the flow guiding layer in the first hydrophilic non-woven fabric cap bag. The large amount of urine is rapidly and completely absorbed in the short time to ensure the healthy growth of the baby.

The invention discloses a preparation method of an inorganic clay-biological glue compound water-retention material. Biological glue is added into deionized water, a mixture is heated and stirred intogel, then inorganic clay is added for full stirring and even mixing, and granulation and drying are conducted to obtain the inorganic clay-biological glue compound water-retention material, wherein the inorganic clay is a mixture of red clay and loess, and a mass ratio of the red clay to the loess is 1 to (0.2 to 5). The red clay and the loess not only can reduce the production cost of the soil water-retention material, but also can provide necessary nutrient substances for plant growth; the biological glue has high cohesion action, can prevent water and soil loss and has the performance of inhibiting soil moisture evaporation well and the effects of water retention, soil conservation, fertilizer conservation, yield improvement and the like; the water-retention material prepared through the method has excellent water retention performance, can effectively reduce water loss, improves the soil ecology function, provides good water and soil conditions for plant growth and promotes growthof vegetation or crops.

The invention relates to the field of disposable sanitary products, in particular to a fast-infiltration breathable absorption object and a preparation method thereof, and mainly solves the problems that an absorption object in the prior art is slow in infiltration and poor in breathability. The fast-infiltration breathable absorption object comprises an absorption core and is characterized in that the absorption core comprises bulky nonwoven fabric, a first sap layer and a second sap layer are respectively arranged on the upper surface and the lower surface of the bulky nonwoven fabric, firstdust-free paper is compositely adhered to the first sap layer, second dust-free paper is compositely adhered to the second sap layer, the first sap layer is provided with at least one first through groove, the second sap layer is provided with at least one second through groove, and the width of each first through groove and each second through groove is 0.1-40mm.

The invention provides a fermented biomass multifunctional soil conditioner, and a preparation method and application thereof. The soil conditioner comprises the following main components in terms ofdry weight: 320-700 g / kg of organic matters, 7-25 g / kg of total nitrogen, 150-350 g / kg of humus, 3-15 g / kg of available phosphorus and 3*10<4> to 6.7*10<7> CFU / g of beneficial bacteria. The preparation method comprises the following steps: adding a biotransformation derivative into organic solid waste, and performing aerobic high-temperature biotransformation, stack retting, drying and crushing byusing a physicochemical-biological enhanced rapid aerobic biological fermentation method, thereby obtaining the fermented biomass multifunctional soil conditioner. The soil conditioner can be appliedto improvement and remediation of barren, degraded and salinized soil and soil with continuous cropping obstacles, and has the effects of obviously improving the physical and chemical properties of the soil, enhancing the soil permeability and improving a soil structure; the soil conditioner neutralizes the acidity and alkalinity of the soil, improves the microflora structure of the soil, and hasremarkable effects on crop growth and development and other aspects; and the fermented biomass multifunctional soil conditioner has the advantages of waste resource utilization, remarkable ecologicalbenefits and economic benefits and the like.

The invention discloses nucleic acid for treating HCC (Hepatocellular Carcinoma), a preparation method thereof, a CAR-T (Chimeric Antigen Receptor T) cell having the nucleic acid and a preparation method of the CAR-T cell. A sequence of the nucleic acid at least comprises a CD226 costimulatory zone nucleic acid sequence as shown in SEQ ID NO.6 and a 4-1BB costimulatory zone nucleic acid sequence as shown in SEQ ID NO.7. An inhibition function of an HCC microenvironment can be overcome by promoting the generation of cell factors of IFN (Interferon)-gamma, so that the infiltration rate, the proliferation rate and the survival rate of T cells can be increased; after GPC3-226BB-CART cells are injected to a body, the GPC3-226BB-CART cells can survive in tumor and can be continuously proliferated until the tumor is removed.

The invention discloses a novel slope water interception and drainage ditch and a design method thereof. The novel slope water interception and drainage ditch is characterized by comprising a seepage layer, a ditch bottom layer and a water interception layer, wherein the seepage layer, the ditch bottom layer and the water interception layer form a groove structure; the seepage layer is located on the left side of the ditch bottom layer; the water interception layer is located on the right side of the ditch bottom layer; the ditch bottom layer is arranged on the lower parts or bottom ends of the seepage layer and the water interception layer; the seepage layer is composed of a mesh cage and particle fillers; and the mesh cage is filled with the particle fillers. In the practical application, the seepage layer is arranged, interflow can be effectively drained, and surface erosion and the diffusion path of non-point source pollution are cut off; slope surface runoff and the interflow are rapidly collected, and the drainage of the slope runoff is increased, so that useless slope runoff can be changed into available water sources, and the utilization ratio of water source is improved.

A method for injecting liquid into a battery is provided. The method comprises the following steps: (1) injecting an electrolyte into a battery to be treated to obtain an inject battery, performing negative pressure static pretreatment on that injected battery, performing positive pressure static pretreatment after exhaust to normal pressure, and obtaining a pretreated battery after exhaust to normal pressure; (2) enabling the pretreated battery under negative pressure, then exhausting the battery to atmospheric pressure and then stationary under positive pressure, and completing a differential pressure treatment cycle after exhausted to atmospheric pressure; (3) repeating the differential pressure treatment cycle of the step (2) for at least one time to obtain a cyclically treated battery; (4) carrying out negative pressure static post-treatment on the cycled battery, and exhausting to atmospheric pressure to obtain the battery for completing liquid injection. The method of the invention realizes the reduction of the area of the electrode dry area after the liquid injection, the increase of the electrolyte infiltration rate and the shortening of the standing time required for waiting for the electrolyte to be completely infiltrated after the liquid injection process is completed.

The invention belongs to the technical field of batteries, and discloses a full-tab cylindrical battery rubbing method and a full-tab cylindrical battery. The method comprises the following steps: rotating to a first position from the outer ring of a battery cell kneading plane to the center direction by using a first kneading wheel; and the second rubbing wheel rotates to a second position from the center of the battery cell rubbing plane to the outer ring direction, and the path through which the first rubbing wheel passes and the path through which the second rubbing wheel passes do not coincide. According to the method, under the condition that the tab foil is not increased, the thickness of the rubbing plane of the welding area of the collector plate is effectively increased, the thickness of the non-welding area is reduced, the welding yield of the collector plate is improved, the infiltration rate of electrolyte is improved, and the problem that the rubbing plane blocks the center hole is solved.

A washing method of an air-water backwashing surface of filter materials of a natural filtering bed and a washing control system thereof are provided by the invention. By the use of air lift generated by compressed air, piping generated by water power and separation generated by the mixture of the air and the water, the compact filter materials and a silt layer covered on the natural filtering bed are dispersed to cause the recombination of the filter materials. Meanwhile, with the running of river water, the silt with light weight and sediment are discharged out of the filtering bed, thus increasing the filtration coefficient of a permeable layer and the vertical infiltration velocity of surface water to underground. The control system comprises a seepage well of the natural filtering bed, an air distribution system which generates the air lift and a water distribution system and a control system which generate the piping. By adopting the method and the system of the invention, a water plant is moved to the underground, thus saving investment, occupying less area, having low operation cost, meeting the requirements of environmental engineering, increasing water yield and improving water quality.

The invention relates to composite microbial fertilizer for soil improvement. The composite microbial fertilizer is prepared from the following components in parts by weight: 10 to 15 parts of alkaline phosphatase, 10 to 15 parts of sucrase, 10 to 15 parts of bacillus licheniformis, 10 to 15 parts of yeast strain, 20 to 50 parts of dandelion, 10 to 15 parts of gypsum, 15 to 25 parts of sodium alginate, 5 to 15 parts of calcium sulfate, 1 to 10 parts of humic acid, 1 to 5 parts of palm oil, 1 to 5 parts of ferrous sulfate, 10 to 20 parts of powdered rock phosphate, 20 to 30 parts of pine needle mulch, and 1 to 5 parts of trace elements. The composite microbial fertilizer improves soil nutrients and water retention properties of land.

The invention discloses an ultra-thin fluid absorbent body for a disposable hygiene product. The absorbent body comprises a liquid-permeable layer, a liquid-tight layer and an absorbent core layer, wherein the liquid-permeable layer comprises at least one layer of non-woven material; the absorbent core layer comprises at least two layers of non-woven materials, and at least one mixed body layer is arranged between the non-woven materials; a liquid-guidance passage is formed in the mixed body layer; a layer of non-woven fabric covers the periphery of the absorbent core layer; the lower liquid-tight layer comprises at least one layer of thin film; and the liquid-permeable layer, the liquid-tight layer and the absorbent core layer are bonded by virtue of adhesives. The absorbent body provided by the invention is reasonable in design and simple in production process. The ultra-thin fluid absorbent core layer comprises absorbent polymer particles and the liquid-guidance passage which is formed due to uneven distribution of the absorbent polymer particles, so that the absorbent body adopting the absorbent core layer is capable of obviously accelerating seepage speed of liquid and keeping surface dry after absorbing the liquid; and the absorbent body has good popularization and application values.

The invention discloses a sunken plaza capable of collecting and recycling rainwater and a construction method thereof. The sunken plaza comprises a foundation pad laid at the bottom of a foundation pit, a rainwater collection structure erected on the foundation pad, and a rainwater infiltration structure laid on the rainwater collection structure. A water outlet well is arranged inside the rainwater collection structure. Vegetation buffer belts are arranged on the outer sides of the periphery of the upper portion of the foundation pit. The rainwater collection structure is formed by splicing a plurality of PP rainwater collection modules, and an overflow pipe is arranged at the upper portion of the rainwater collection structure. The rainwater infiltration structure comprises a filter layer, a medium sand layer, a rubble layer, a coarse sand layer and a filter plate which are distributed from bottom to top. The construction method comprises the steps of 1, foundation pit excavation; 2, foundation pad construction; 3, rainwater collection structure construction; 4, rainwater infiltration structure construction; 5, follow-up construction. The sunken plaza is reasonable in design, easy and convenient to construct, good in using effect and capable of filtering and collecting rainwater, forming integrated rainwater infiltration and collection, effectively solving the problem of water drainage of the sunken plaza.

The invention provides a plurality of sponge urban rainwater seepage wells adopting building rubbish as built-in materials. Each rainwater seepage well comprises a seepage well hole, a broken building rubbish filling material in the seepage well hole and surrounding soil, wherein the seepage well hole is formed in the surrounding soil, and the seepage well hole is filled with the broken building rubbish filling material; the hole diameters and the depths of the seepage well hole are set differently according to embedded environments. The invention further provides a manufacturing method of the sponge urban rainwater seepage wells adopting building rubbish as built-in materials. The rainwater seepage wells have the effects that increasingly-exhausted underground water can be supplemented so as to achieve ecological restoration; rainy season surface runoff can be reduced so as to avoid urban inland inundation, and municipal drainage system pressure is relieved; building rubbish can be recycled to reduce environmental pollution; the manufacturing cost can be lowered by 70-80% on the aspect of construction materials, and the construction period can be shortened by 81-83%.

The invention discloses a traditional Chinese medicine moistening machine, and relates to the technical field of pharmaceutical equipment. The machine comprises a shell, a partition plate is fixedly connected between the top and the bottom of the inner wall of the shell, the top of the inner wall of the shell and one side of the partition plate are provided with steam disks, a cross plate is fixedly connected between one side of the partition plate and one side of the inner wall of the shell, a water tank is fixedly connected on one side of the bottom of the inner wall of the shell and positioned on one side of the partition plate, a water level sensor is fixedly connected at the bottom of one side of the inner wall of the water tank, and a steam generator is fixedly connected at the top of the cross plate. According to the traditional Chinese medicine moistening machine, working of a moving device drives a support frame to bilaterally shake to drive supporting plates storing medicinesto bilaterally move, so that the medicines are mutually staggered, contact areas between the medicines and steam are increased, the lower medicines can sufficiently contact with the steam, the steamsufficiently enters inside of the steam, the medicines is thoroughly moistened, moistening of the medicines is accelerated, and working efficiency is improved.

The invention relates to the field of non-woven fabric materials, in particular to a concave-convex hot-air non-woven fabric. The raw material of the concave-convex hot-air non-woven fabric is repeatedly hydrophilic bi-component fiber, a surface layer is provided with a plurality of hydrophobic convex points protruding upwards, and hydrophilic convex surfaces are arranged between the adjacent convex points. The concave-convex hot-air non-woven fabric has the advantages that the absorption and infiltration speed is high, and the surface layer is dry and comfortable.

The invention belongs to the technical field of soil improvement, and discloses a method for improving saline-alkali soil by utilizing crushed crop straws. The method for improving saline-alkali soil by utilizing crushed crop straws comprises the following steps: crushing straws to obtain crushed straws; carrying out straw returning treatment; after the straws are returned to the field, sampling in different periods during the straw returning period, and determining soil indexes. Compared with the prior art, the method for improving the saline alkali soil by utilizing the crushed crop straws has the advantages that under the condition of saving manpower and material resources, and the crushed crop straws can be utilized to change the physical structure of the soil, increase the porosity and microbial activity of the soil and accelerate the migration of soil moisture and salt in the soil, so that the pH and salt content of the soil are reduced, the water content of the soil is improved, the purpose of improving the saline-alkali soil is achieved, and a technical method is provided for improving the saline-alkali soil in fields.

The invention discloses a rain flood resource utilization device for a field greenhouse area in the northern area and a construction method. The problem that in the prior art, the surface runoff in the northern area is large is solved, and the device has the advantages of achieving rainwater collection, storage and utilization and effectively saving water. According to the specific scheme, the rain flood resource utilization device for the field greenhouse area in the northern area comprises a rainwater collection unit, a purification unit, a water storage unit and a utilization unit, whereinthe rainwater collection unit is arranged on the side portion of the bottom of a field greenhouse, the top of the rainwater collection unit is lower than the ground surface around the greenhouse, therainwater collection unit is arranged in the length direction of the greenhouse to collect the surface runoff generated by rainfall around the greenhouse and rainwater sliding down from the greenhouse, the rainwater collection unit comprises a plurality of longitudinally-arranged water collection grooves, the adjacent water collection grooves communicate with each other, and the size of the top ofthe rainwater collection unit is larger than that of the bottom of the rainwater collection unit; the purification unit comprises a plurality of filtering layers, and the filtering layers are arranged on the tops of the water collection grooves respectively; the water collection groove in the bottommost layer communicates with the water storage unit; and the utilization unit communicates with thewater storage unit to supply water to the field greenhouse.

The invention relates to a dustproof self-cleaning combined self-draining water permeable brick. The dustproof self-cleaning combined self-draining water permeable brick is characterized by comprisinga first permeable layer, a second permeable layer and a lower inclined water diversion channel, wherein the first permeable layer has first water permeable pores; the second permeable layer has second water permeable pores. The dustproof self-cleaning combined self-draining water permeable brick is characterized in that the pore diameter of the second water permeable pores is greater than that ofthe first water permeable pores; the channel can drain and has certain capability of storing rainwater. The dustproof self-cleaning combined self-draining water permeable brick is provided with the inclined water diversion channel, so that the infiltration speed of the rainwater is effectively increased, and the adjusting capability for the water volume of the rainwater is high; in addition, a water diversion pipe in the bottom layer of the water permeable brick is obliquely arranged to realize a water storage effect; in addition, the blockage of the water permeable brick can be avoided; in addition, the dustproof self-cleaning combined self-draining water permeable brick can relieve the pressure of air drying, is not easy to dust and can reduce the haze phenomenon.

The invention provides a method for improving water and fertilizer utilization efficiency of sunflower in severe saline-alkali soil by utilizing ceramsite. The method comprises the following steps: mixing ceramsite with different particle sizes according to an optimized mass ratio according to the soil texture condition, applying the mixed ceramsite and a humic acid organic fertilizer to the severe saline-alkali soil, performing rotary tillage or powder ridging to uniformly mix the mixed ceramsite and a surface soil layer, performing base fertilizer strip application and film mulching, then performing irrigation and salt pressing, performing sowing at an appropriate time, and reducing nutrient leaching loss by optimizing and operating the type, the dosage and the application method of a nitrogen fertilizer in the growth period of the sunflower. According to the method, the optimized application of the ceramsite and the efficient operation and management of water and fertilizer are combined, so that the leaching efficiency of soil salt is improved, loss reduction and storage protection of nutrients and crop absorption are promoted, and resource utilization of waste in the severe saline-alkali soil and water and fertilizer synergism of the sunflower are realized.

The invention relates to a corn field acid soil improving fertilizer. The corn field acid soil improving fertilizer consists of an inner layer and an outer layer, wherein the inner layer is prepared from the following components in parts by weight: 5 to 15 parts of urease, 10 to 15 parts of cellulase, 10 to 15 parts of lactic acid bacteria agent and 10 to 15 parts of silicate bacterial agent; the outer layer is prepared from the following components in parts by weight: 20 to 30 parts of astragalus sinicus powder, 10 to 15 parts of quick lime, 15 to 25 parts of polyacrylamide, 5 to 15 parts of oyster shell powder, 1 to 10 parts of humic acid, 1 to 15 parts of palm oil, 1 to 5 parts of potassium polyphosphates, 10 to 20 parts of bone powder, 10 to 20 parts of phosphorite powder, 20 to 30 parts of bentonite, and 1 to 5 parts of trace elements. By adopting the corn field acid improving fertilizer, nutrients of soil are increased, and the water retention performance of land is improved.

This invention relates to a soil conditioner, especial a nutritional soil conditioner to be used specially for saline lands. Its components and their weight percentage is that desulfuration offal 30-50%, accelerator 10-15%, straw powder 10-30%, furfurol dregs 10-20% and organic fertile 10-12%. First straw powder and organic fertile are shattered by crusher with its grade size less than 2mm, and then mixed homogeneously with desulfuration offal, furfurol dregs, accelerator, then conducted magnetization with magnetizing machine and dried by drying machine, and then sizing and packaging. This invention can improve physical and chemical characteristic of the soil, inhibit the increase of salt, neutralize alky of the soil simultaneously, and can also provide affluent nutrient for crops.

The invention belongs to the field of battery diaphragms, and discloses a dopamine-modified polyimide battery diaphragm as well as a preparation method and application thereof. The preparation methodcomprises the following steps: S1, soaking a carrier in a dopamine solution, and conducting oscillating at room temperature until the carrier is uniformly mixed to obtain a dopamine-loaded carrier; S2, adding the dopamine-loaded carrier and an additive into a precursor polyamide acid (PAA) solution, and carrying out stirring to obtain a mixed solution, wherein the additive is one or more selectedfrom the group consisting of poly(ethylene oxide), poly(propylene oxide), polyethylene glycol, dimethyl phthalate, polymethyl methacrylate and polyurethane; and S3, coating polytetrafluoroethylene with the mixed solution, and carrying out chemical imidization or thermal imidization treatment to obtain a polyimide porous film, wherein the thermal imidization is carried out in a programmed stepped heating curing manner consisting of three sections, namely 100 DEG C / 1h, 200 DEG C / 1h and 300 DEG C / 1h. Through the mutual synergistic effect of dopamine, the carrier and the additive, the liquid absorption capacity of the battery diaphragm is improved, and the porosity and other related properties of the battery diaphragm are improved.