76results about How to "Good slow release function" patented technology

The invention discloses a special fertilizer with medical fertilizer slowly released and water conserved for seedlings growth which is characterized in that the fertilizer mainly consists of the following ingredients according to weight propotion: 5-10 percent of super-absorbent resin, 8-20 percent of nitrogen (N), 5-12 percent of phosphorus pentoxide (P2O5), 3-7 percent of potassium oxide (K2O), 1-3 percent of zinc (Zn), 1-3 percent of ferrite (Fe), 1-5 percent of ingredients of boron, magnesium, molybdenum, manganese and copper, 0.2-2 percent of pesticide, 0.1-2 percent of fungicide, 0.001-0.01 percent of root growth promoting agent and 0.001-0.01 percent of dwarfing agent and the rest is adsorbent. The special fertilizer with medical fertilizer slowly released and water conserved for seedlings growth of the invention has functions of good water holding and supplying, slow releasing of medical fertilizer, seedlings and roots strengthening, elements applying and growth promotion, diseases prevention, insect disinfesting and production increasing, and is characterized by less dosage, low cost and convenient application, etc., and can be applied to rice seedlings dry raising, seedling raising on plastic trays and upland crops raising.

The invention discloses a controlled release type potassium ferrate composite as well as a preparation method and application thereof. The preparation method is as follows: by taking a high polymer which is biodegradable and environment-friendly as a framework material, dissolving the high polymer in a low-boiling point organic solvent, adding a pore-foaming agent, a dispersing agent and high-purity potassium ferrate, adding the mixture into a medium for emulsifying and curing, and filtering and drying the cured product to obtain the controlled release type potassium ferrate composite. The composite is in a water environment, so that a net-shaped duct structure is formed in an inert framework material by virtue of the hydrophilcity of the pore-foaming agent, and therefore, the potassium ferrate is effectively aided to release from the composite, and a problem that dissolution of active ingredients is affected due to texture compaction of the framework material is avoided; the composite is different from the conventional disposable oxidant, controllable in release speed in water, uniform in velocity, long in holding time, good in storage stability, and has wide application prospect on in-situ repairing polluted underground water.

The invention discloses a dyeing and finishing process for a polyester blended fiber fabric. The process comprises the following steps of 1, pretreatment, wherein the polyester blended fiber fabric is sequentially subjected to scouring, bleaching and enzyme washing; 2, mercerizing and sizing, wherein the fabric is subjected to padding of alkali liquor under the room temperature for pre-sizing; 3, dyeing, wherein the fabric is soaked into dye liquor formed by disperse dyes, dyeing is performed under the temperature of 30-40 DEG C, temperature is increased to 90-110 DEG C at the heating rate being 0.8-1 DEG C / min, washing is performed through warm water, infrared ray pre-heating is performed, and then hot-blast air drying is performed; padding is performed again under the room temperature to reduce the suspended solid dye liquor formed by dyes, a reduction solution is subjected to padding, steam reduction and oxidation are performed, washing is performed through warm water, soaping is performed, and then washing and drying are performed; 4, after-treatment, wherein soft and flame-proof treatment is performed in sequence. According to the dyeing and finishing process for the polyester blended fiber fabric, the touch feeling, elasticity and other properties of the fabric are improved remarkably, dyeing is uniform, the color fastness is high, and the color is full.

The invention discloses a dyeing and finishing process for polyester interweaved fabric. The dyeing and finishing process comprises the following steps: S1) pre-treating: performing scouring and bleaching and enzyme washing treatment on the polyester interweaved fabric in turn; S2) pre-shaping: performing pre-shaping treatment on the polyester interweaved fabric; S3) dyeing: soaking the polyester interweaved fabric into a dye liquor at a liquor ratio of 1:(10-30), wherein the dye liquor comprises 1-3% of reactive dyes, 2-5% of rare-earth complex micro-encapsulation disperse dyes, 5-15g / L anhydrous sodium sulphate, 1.5-3.5g / L pH buffering agent, 0.1-0.3g / L organic phenol halide and 0.01-0.05g / L organic fluorinated surfactant; and S4) finishing: performing softening and flame-proof treatment on the fabric in turn. The dyeing and finishing process for polyester interweaved fabric, disclosed by the invention, not only can obviously improve the performances, such as, hand feel and elasticity, of the fabric but also can achieve the effects of uniform dyeing, high color fastness and abundant color and luster.

The invention discloses a polyester-cotton microcapsule disperse reactive dye one-bath dyeing technology. The technology comprises the steps of: S1, polyester dyeing: dipping a to-be-dyed polyester-cotton fabric in a dye solution containing microcapsule disperse dye, conducting heat preservation at 65-75DEG C, then performing heat preservation at 110-130DEG C, and carrying out cooling to 30-40DEG C, using chitosan to serve as the carrier of the disperse dye, and then conducting crosslinking curing; S2. cotton dyeing: adding a quaternary ammonium salt cationic etherifying agent, carrying out stirring reaction, then adding a reactive dye, performing heat preservation at 55-65DEG C, adding an organic solvent, conducting heat preservation at 70-90DEG C, then adding organic amine and sodium carbonate, and performing heat preservation at 60-100DEG C; and S3, aftertreatment: performing cooling to room temperature, and then carrying out primary washing, soaping and after-washing. The polyester-cotton microcapsule disperse reactive dye one-bath dyeing technology provided by the invention has the advantages of simple process, little pollution, wide dye applicability, uniform coloring, high color fixation rate and good level-dyeing properties.

The invention relates to ivermectin sustained-release microspheres used as an animal medicine for animal injection, and a preparation method thereof. The invention belongs to an interdisciplinary field of biomedical polymer materials and controlled release preparations. The invention discloses ivermectin sustained-release microspheres, which are characterized in that: the ivermectin sustained-release microspheres have particle sizes of 0.1 to 10mum, a medicine loading capacity of 20% to 35%, and an entrapment rate of above 80%. The preparation method of the ivermectin sustained-release microspheres comprises steps that: a carrier material and the medicine ivermectin with a mass ratio of 1:1-10 are dissolved in an organic solvent; the solution is processed through supersonic wave or mechanical stirring, such that the solution is emulsified into an oil phase, wherein a volume ratio of oil phase to water phase is 1:5-10; under a temperature of -10 DEG C to 30 DEG C, the oil phase is injected into a water phase disperse medium solution step-by-step; constant-temperature magnetic stirring is carried out with a rotation speed of 400 to 10000rpm, the mixture is sufficiently emulsified, such that an S / O / W type emulsion is obtained; the emulsion is stirred under room temperature for 3 to 4 hours, such that the organic solvent is sufficiently volatilized; the obtained product is centrifuged, washed, collected, and is vacuum-dried with a pressure of 0.01 to 0.04MPa under room temperature for 10 to 12 hours or is lyophilized under a temperature of -0 DEG C to -20 DEG C. With the processes, ivermectin sustained-release microspheres with particle sizes of 0.1 to 10mum are obtained.

The invention discloses a disperse reactive dye one-bath two-step dip dyeing method for polyester cotton fabric. The method comprises the following steps: S1, pretreatment: padding a polyester cotton fabric to be dyed in a finishing liquid, conducting two dipping and two rolling, pre-drying at 60-80 DEG C, baking at 120-140 DEG C, washing with cold water and drying; S2, polyester dyeing: immersing the polyester in a disperse dye, insulating at 65-75 C, and insulating at 110-130 DEG C; S3, cotton dyeing: adding a quaternary ammonium salt cationic etherifying agent, stirring for reaction, adding a reactive dye, insulating at 70-80 DEG C, adding a dyeing auxiliary, insulating, adding soda ash, and insulating at 60-100 DEG C; and S4, posttreatment: conducting an initial washing, soaping and post washing. The disperse reactive dye one-bath two-step dip dyeing method for polyester cotton fabric has the advantages of simple process, easy industrial implementation, wide dye application, uniform coloration, high fixation rate and good levelness.

The invention relates to a composite drug carried microsphere, a minocycline hydrochloride nano controlled-release composite drug carried microsphere system and a preparation method thereof. A drug carried system with a nuclear shell structure is formed by embedding minocycline hydrochloride inside a poly D,L-lactide-co-glycolic acid polymer microsphere and covering a cationic polymeric liposome prepared from O-QACMC modified by polyethylene glycol, O-QACMC and cholesterol outside the poly D, L-lactide-co-glycolic acid polymer microsphere; and the composite drug carried microsphere system covered and carried with the minocycline hydrochloride has the grain diameter ranging from 340 nm to 400 nm and positive surface Zeta electric potential. The composite drug carried microsphere system can be remained in a water solution for at least 2 months, has high entrapment rate reaching larger than 90 percent on drugs and strong drug carrying capacity reaching 9 percent. The minocycline hydrochloride nano controlled-release composite drug carried microsphere system has the characteristics of uniform and controllable grain diameter, good preparation stability, simple preparation process, high drug carrying rate, favorable controlled release function, and the like, and is suitable for batch production.

The invention relates to the technical field of polluted water body improvement, and discloses a method for microorganism and aquatic plant cooperative purification of a polluted water body; the method comprises the following steps: A, the tube interior of a microorganism slow-release tube is filled with a compound microorganism preparation; B, the microorganism slow-release tube is applied in the polluted water body or bottom mud by aquatic plants; and C, along with the growth of the aquatic plants, microorganisms in the microorganism slow-release tube are gradually released and are attached to submerged plants, and a biofilm is formed. The microorganism and aquatic plant cooperative purification of the polluted water body is adopted. The microorganism slow-release tube filled with the compound microorganism preparation is adopted, on one hand, stability and washing resistance are greatly improved, on the other hand, the load capacity of microorganism bacteria and the proliferation of the microorganism bacteria are improved, and in general, the purpose of increasing the efficiency of wastewater treatment is achieved.

A chitosan-sodium alginate wrapped pylorospirobacillus holoprotein microball for developing the slow-release efficient target Hp vaccine with high intestinal target performance is prepared from pylorospirobacillus holoprotein, and the biodegradable chitosan and sodium alginate through emulsifying, solidifying and re-suspending.

The invention discloses a low-cost grape organic fertilizer. The low-cost grape organic fertilizer is prepared from the following raw materials in parts by weight: 6-8 parts of eastern bracken fern rhizome residue, 30-40 parts of saw wood ashes, 6-9 parts of manganchlorite, 5-6 parts of pine needle meal, 4-5 parts of monoammonium phosphate, 5-6 parts of calcium superphosphate, 4-6 parts of potassium chloride, 6-7 parts of potassium sulfate, 5-6 parts of calcium nitrate, 5-6 parts of magnesium sulfate, 20-30 parts of plant ashes, 24-36 parts of peat soil, 12-20 parts of animal manure soil, 6-8 parts of agaricus bisporus mushroom dreg, 4-5 parts of a soil modifier and an appropriate amount of rice-washing wastewater. According to the low-cost grape organic fertilizer, the plant ashes and the peat soil can be used to optimize the soil structure; mixing and pelletizing structures such as monoammonium phosphate, potassium chloride and potassium sulfate are used, so that the fertilizer has an excellent sustained release function and can be used for providing continuous fertilizer supply for grapes; the eastern bracken fern rhizome residue and the saw wood ashes are added to strengthen permeability inside the soil and facilitate absorption of a grape root system on nutritional ingredients. The low-cost grape organic fertilizer has a very good practical value due to less consumption and high effect.

The invention discloses a drug-loading nano-fiber membrane and a preparation method thereof. The drug-loading nano-fiber membrane comprises 10-20% of vanillin by mass and the balance of polyvinyl alcohol and fibroin; and the ratio of the polyvinyl alcohol to the fibroin is (5-10):(1-5) by mass. According to the invention, the polyvinyl alcohol and fibroin with good biocompatibility are used as a drug carrier, and the polyvinyl alcohol-fibroin drug-loading fiber containing vanillin is prepared by adopting an electrostatic spinning technology; absolute ethyl alcohol is uniformly spread on the surface of the nano-fiber membrane for sufficient reaction; and after drying, a drug-loading nano-fiber membrane is obtained. The preparation technology of the drug-loading nano-fiber membrane is simple; and the obtained material has good biocompatibility and degradability, stable performance and excellent drug releasing performance.

The invention provides pH-sensitive doxorubicin hydrochloride loaded silver nano-cluster hydrogel. A preparation method of the silver nano-cluster hydrogel comprises the following steps: (1), an AgNO3 solution is prepared, placed in a microwave reactor, stirred and heated, a cysteine solution is added dropwise, and a silver nano-cluster dispersing agent is prepared through reaction; (2), a citric acid solution is added to the silver nano-cluster dispersing agent, the mixture is placed on a small shaking table and subjected to ultraviolet irradiation, an NaHCO3 solution is added to regulate pH after the solution is transparent, high-speed centrifugation is performed, doxorubicin hydrochloride powder is added, the mixture is placed in a high-pressure reactor, nitrogen is introduced, the pressure and the temperature in the reactor are adjusted, red and clear jelly, namely, the pH-sensitive doxorubicin hydrochloride loaded silver nano-cluster hydrogel, is obtained through reaction. The silver nano-cluster hydrogel is taken as a carrier to coat doxorubicin hydrochloride and is injected to a tumor position through orthotopic injection, the pH of the tumor position is responded, so that slow drug release is realized, the tumor inhibition rate is increased, and cardiac toxicity is reduced.

The invention discloses a nylon-cotton fabric one-bath dyeing method with an activated dye. The method comprises the steps that a nylon-cotton fabric is soaked into a activated dye liquor, dyeing is conducted under the conditions that the bath ratio is adjusted to be 1:(5-20) and the temperature is 20-30 DEG C, the temperature is raised to 55-75 DEG C, heat preservation is conducted for 5-15 min, then the temperature is raised to 105-125 DEG C, heat preservation is conducted for 30-40 min, 1-5 g / L sodium carbonate is added, and heat preservation is conducted for 5-25 min at the fixing temperature of 60-90 DEG C, wherein the activated dye liquor comprises 1-5% owf of rare earth coordinated microencapsulated activated dye, 5-15 g / L of anhydrous sodium sulphate, 0.5-10 g / L of pH lubricating agent, 0.1-0.3 g / L of hydrozybenzene halogenide and 0.01-0.1 g / L of organic fluoride surface active agent. The dyeing method has the advantages of being high in fixation rate and good in leveling property and is simple in technology and short in dyeing time, the consumption of salt in the activated dye is greatly reduced, and environmental protection is achieved.

The invention relates to a polyvinyl chloride long-acting fog-dispersal dripping agricultural film with slow-release function and a preparation method thereof, belonging to the technical field of agricultural films. The agricultural film is composed of the following components in parts by mass: 100 parts of polyvinyl chloride resin, 40-50 PHR of primary plasticizer, 5-10 PHR of secondary plasticizer, 1.2-3 PHR of liquid composite stabilizer, 1.2-3 PHR of powder composite stabilizer, 0.3-1 PHR of light stabilizer, 0.5-2 PHR of antioxidant, 3-5.5 PHR of fog-dispersal dripping agent, 0.007-0.3 PHR of colorant and 0.1-2 PHR of nano slow-release agent. The preparation method comprises the following steps: (1) grinding: grinding the secondary plasticizer, powder composite stabilizer, light stabilizer, antioxidant and colorant into slurry; (2) feeding of high-speed mixer: simultaneously feeding the slow-release agent and fog-dispersal dripping agent; when the high-speed mixer is at high speed, feeding the plasticizer, mixing, and feeding the ground slurry; and (3) film preparation: banburying, plastifying, calendering, setting and coiling. The agricultural film has the advantages of simple technique, favorable light transmittance, synchronous dripping fog-dispersal function period with service life of the film, and the like.

The invention belongs to the field of a preparation process of oilfield chemicals and relates to an oilfield gel breaking technique, in particular to a liquid slowly-releasing acid gel breaker which aims at overcoming the problems that the operability is bad, the influence to the contracture effect is larger and the oil well can disable seriously in the prior art. In order to solve the problems of the prior art, the invention provides the technical schemes that the liquid slowly-releasing acid gel breaker contains ester acid-supply components and organic solvent protective solute components according to the mass ratio of 1 to 1-7, wherein the ester is a single component or the combination of a plurality of components of methyl formate, ethyl formate, diethy-aceto oxalate, dimethyl malonate and / or ethyl malonate; and the organic solvent is alkane or liquid ester. As the product of the invention can be released slowly, the construction operability and the effectiveness can be greatly improved; after the fracturing operation is finished, the product can be finally released completely, the viscosity of the gel breaking product is low, and the aims of completely breaking gel and flowing back in time can be achieved.

The present invention provides a polydopamine nanocarrier delivery system for targeted activation of a CD44 molecule. According to the invention, the surface of a polydopamine nanocarrier is partiallymodified with a targeting ligand, and the targeting ligand is a ligand capable of specifically binding to the activated CD44 molecule. According to the nanocarrier and a preparation method thereof, the method is simple in process, and the nanocarrier is high in drug loading capacity, high in yield, good in adaptability to various drugs and convenient to couple with various targeting ligands. Meanwhile, the nanocarrier is endowed with a good drug sustained release function in the preparation process. The invention provides a simple method capable of realizing simultaneous synthesis and drug loading of the polydopamine nano-drug carrier through a one-pot process, wherein a drug loading procedure and the procedure of polymerizing dopamine to form the nanoparticle drug carrier are completed in one step. The method is simple, convenient, green and controllable; and the nanocarrier is high in drug loading capacity, good in compatibility with various drugs, good in biocompatibility, high insafety and easy for targeted ligand modification.

The invention discloses a polyester cotton dispersing and reactive dye one bath process dyeing technology. The technology comprises the steps that dye liquor is prepared at room temperature, the dye liquor pH is adjusted to be 4-6, polyester cotton is immersed in the dye liquor according to the bath ratio of 1:(10-30), heating is conducted to be at 45-55 DEG C, heat preservation is conducted for 8-12 min, heating is conducted to be at 135-145 DEG C, heat preservation is conducted for 35-45 min, isolated disperse dye microcapsule continuous dyeing is conducted for 15-25 min, cooling is conducted to be at 75-85 DEG C, and initial washing, soaping, after-washing and drying are conducted; the dye liquor is prepared from 1-3%(owf) of reactive dye, 2-5%(owf) of rare earth complex microencapsulation disperse dye, 5-15 g / L of anhydrous sodium sulphate, 1.5-3.5 g / L of a pH buffering agent, 0.1-0.3 g / L of organic phenol haloid and 0.01-0.05 g / L of organic fluorine surfactant. The dyeing technology is high in fixation rate, good in levelling property, simple and short in cycle.

The invention discloses a wet short steaming pad dyeing process adopting vat dye microcapsules. The wet short steaming pad dyeing process comprises procedures as follows: S1, padding and rolling in a dyeing : to-be-dyed fabric is padded in the dyeing for double padding and double rolling, and the dyeing is prepared from 0.1%-10% (owf) of the vat dye microcapsules, 1-20 g / L of thiourea dioxide, 1-3 g / L of a pH buffering agent, 1-3 g / L of a penetrant and 5-30 g / L of an accelerator; S2, padding and rolling in an alkaline : the to-be-dyed fabric obtained through treatment in S1 is directly padded and rolled in the alkaline for single padding and single rolling, and the alkaline is prepared from 5-30 g / L of caustic soda and 0-10 g of sodium dithionite; S3, reduction and steaming: saturated steam is used for rapid steaming; S4, oxidization: hydrogen peroxide is adopted for oxidation. By means of the wet short steaming pad dyeing process adopting the vat dye microcapsules, the level dyeing property and the color fastness are remarkably improved, the process is simple and energy is saved.

The present invention relates to a low molecular heparin iron nanoparticle biological product. The invention further relates to a preparation method for the low molecular heparin iron nanoparticles. According to the present invention, the preparation method for the low molecular heparin iron nanoparticles with excellent slow release function is provided; with the method, the low molecular heparin iron nanoparticles capable of slow release of LMWH in vivo can be obtained, and the heparin administration time and the times of the heparin administration can be effectively reduced with the drug.

The invention discloses a planting method for grape and potato interplanting and relates to the technical field of agricultural planting. The planting method comprises the following steps of potato piece planting preparation, grape seedling planting preparation, land selection and preparation, greenhouse erection and planting furrow forming, grape planting, potato planting, pruning, vine tying, processing at a blooming stage, topdressing and harvesting. The potatoes are planted in separation intervals of grape planting furrows, the water and fertilizer utilization conditions of the potatoes and grapes are fully met, meanwhile the space and resources in a greenhouse are fully utilized by adopting the stereoscopic planting method, the utilization rate of grape planting land is improved, and economic benefit is increased.

The invention relates to a fast-dissolving water-soluble fertilizer, which comprises the following raw materials (by weight): 5-40 parts of humic acid, 0.1-2 parts of polyaspartic acid, 15-25 parts ofurea, 5-15 parts of potassium dihydrogen phosphate, 5-15 parts of ammonium superphosphate, 1-4 parts of a disintegrant, 20-30 parts of potassium nitrate, and 1-5 parts of a surfactant. The water-soluble fertilizer of the invention is an organic-inorganic composite water-soluble fertilizer, which can be quickly dissolved to promote rapid absorption of nutrients by plants, helps improve utilizationratio of nutrients and enhance the quality and yield of plants, can avoid soil pollution after application, and can meet the requirements of drip irrigation micro-spray. The fertilizer of the invention also has a good slow-release function. The nutrients are slowly released into the soil for crop absorption, and the synergistic effect of the various raw materials has a greater effect of promotingfertilizer efficiency and nutritional balance of the fertilizer.

The invention discloses a novel polyester-cotton disperse dye and reactive dye two-bath dyeing process. The method comprises the following steps: S1, dyeing and washing: immersing the polyester cottonfabric into a disperse dye microcapsule dyeing solution, heating the material to 120-130 DEG C, performing insulation for 45 to 55 minutes, cooling the material to 70 to 80 DEG C, performing insulation for 5 to 15 minutes, washing the material with water, and drying the material; and S2, cotton dyeing: immersing the polyester cotton fabric into a finishing solution containing 2,3-epoxypropyltrimethyl ammonium chloride, heating the material to 70-80 DEG C, performing insulation for 50-60 min, and then immersing the material in a reactive dye solution, heating the material to 70-80 DEG C, performing insulation for 10-20min, then adding 5-20g / L of soda ash, performing insulation for 25-35min, and after cooling to room temperature, performing steps of washing, soaping and drying. The noveltwo-bath dyeing process not only has high production efficiency, short process flow, but also uniform coloring and high color fastness.

The invention relates to the field of production of chemical fertilizer, in particular to slow-release fertilizer for garden green plants as well as a preparation method thereof. The slow-release fertilizer comprises the following components: garden plant waste, rice bran, a microbial agent, chitin, animal excrement, marine spirillum powder, rotenone, pomace, biogas residues, amino acid, carboxymethylcellulose, ethanol, silicone oil emulsion, potassium persulfate, aziridine, an emulsifier and a proper amount of water. The fertilizer prepared by the method has high persistence, and can effectively reduce loss of fertilizer, increase the utilization rate of the fertilizer, reduce the fertilization times and reduce the labor intensity of farmers and environment burden; meanwhile, the raw materials are selected from environment-friendly waste materials and residues, so that various nutritional elements can be provided for crops; in addition, by the spray-coating method, coated liquid can directly reach to the surface of the fertilizer maximally and is solidified to form a film, so that the distribution uniformity of the film material on the fertilizer granules is greatly improved.

The invention relates to a composite drug carried microsphere, a minocycline hydrochloride nano controlled-release composite drug carried microsphere system and a preparation method thereof. A drug carried system with a nuclear shell structure is formed by embedding minocycline hydrochloride inside a poly D,L-lactide-co-glycolic acid polymer microsphere and covering a cationic polymeric liposome prepared from O-QACMC modified by polyethylene glycol, O-QACMC and cholesterol outside the poly D, L-lactide-co-glycolic acid polymer microsphere; and the composite drug carried microsphere system covered and carried with the minocycline hydrochloride has the grain diameter ranging from 340 nm to 400 nm and positive surface Zeta electric potential. The composite drug carried microsphere system canbe remained in a water solution for at least 2 months, has high entrapment rate reaching larger than 90 percent on drugs and strong drug carrying capacity reaching 9 percent. The minocycline hydrochloride nano controlled-release composite drug carried microsphere system has the characteristics of uniform and controllable grain diameter, good preparation stability, simple preparation process, highdrug carrying rate, favorable controlled release function, and the like, and is suitable for batch production.

The invention relates to a slow-release water-retaining fertilizer and a preparation method thereof. The slow-release water-retaining fertilizer is prepared from following components in parts by weight: 100 parts of a compound fertilizer, 10-20 parts of a water-retaining slow-release agent, 2-5 parts of an adhesive and 0.01-0.5 part of a plant growth regulator; wherein the water-retaining slow-release agent is modified montmorillonite nano powder; the preparation method of the modified montmorillonite nano powder comprises the following steps: step 1, activating montmorillonite to obtain activated montmorillonite nano powder; step 2, preparing a barbituric acid reactant; step 3, preparing an acrylic acid cross-linked barbituric acid reactant; and step 4, preparing the modified montmorillonite nano powder. The slow-release water-retaining fertilizer prepared by the invention not only has strong water absorption performance and strong water-retaining performance, but also has the effects of adsorbing heavy metals and purifying soil, greatly improves the nutrient utilization rate of the fertilizer and the utilization rate of water resources, reduces agricultural heavy metal pollution, and meets the requirements of national sustainable development strategies.

The invention provides a preparation method of a metformin hydrochloride sustained-release preparation. The preparation method comprises the following steps: dissolving metformin hydrochloride in 95%ethanol to obtain a solution A, and adding hydroxypropyl beta-cyclodextrin and mannitol into the solution A to obtain a solution B; dissolving polylactic acid and polyethylene glycol 200 in acetone toobtain a solution C, mixing the solution B with the solution C to obtain a solution D, transferring the solution D to a magnetic stirrer, continuously stirring the solution D for 12 hours, lowering the temperature of the solution D to 0-1 DEG C within 2 hours, allowing to stand still for 12 hours, and maintaining the temperature of the solution D at 0-1 DEG C during the standing period; heating the solution D after standing till for 12 hours, continuously stirring when the temperature of the solution D is raised to 15-18 DEG C, controlling the temperature of the solution D at 15-18 DEG C whenstirring, and preparing the metformin hydrochloride sustained-release preparation with a low-temperature spray drying method after continuously stirring for 12 hours. According to the invention, thedosage of a capsule wall material is moderate, the drying temperature of materials is low, and the prepared drug-loading preparation is uniform in size and stable in drug release, and has the characteristic of slow release.

The invention provides a preparation method of a vitaminB6 sustained release preparation. The preparation method is characterized in that the vitaminB6 is dissolved in 95% ethanol to obtain a solutionA, and hydroxypropyl beta-cyclodextrin and mannitol are added in the solution A to obtain a solution B; polylactic acid and polyethylene glycol 200 are dissolved in acetone to obtain a solution C, the solution B and the solution C are mixed to obtain a solution D, the solution D is transferred to a magnetic stirrer, the solution D is continuously stirred for 12 hours, the temperature of the solution D is lowered to 0 DEG C to 1 DEG C in 2 hours and the solution D is subjected to standing for 12 hours, and the temperature of the solution D is kept to 0 DEG C to 1 DEG C during a standing period; after standing for 12 hours, the solution D is heated, when the temperature of the solution D is increased to 15 DEG C to 18 DEG C, the solution D is continuously stirred, when the temperature of the solution D is controlled at 15 DEG C to 18 DEG C while stirring, after the material is continuously stirred for 12 hours, the vitaminB6 sustained release preparation is prepared by a low-temperaturespray-drying method. The dosage of a capsule material is moderate, the drying temperature of the material is low, the obtained drug-loading preparation is uniform, the drug release is stable, and thevitaminB6 sustained release preparation has sustained release characteristics.

The invention discloses a method for preparing a bio-charcoal granular organic fertilizer. The technical scheme is that the bio-charcoal granular organic fertilizer is configured by the following raw materials by weight percent: 50% of bio-charcoal, 30% of a cow dung organic fertilizer and 20% of oyster shell powder. Solid powder of all the raw materials is meshed by a screen, water is added, stirring is performed to be uniform, the mass ratio of water to the solid mixed raw material is 0.7:1, extruding granulation molding is performed by a press roller granulator, and drying is performed at 40-70 DEG C. The method has the following beneficial effects: morphological characteristics of bio-charcoal and the organic fertilizer are improved and remolded, the moisture and fertilizer conservation capability of bio-charcoal is given into fully play, the fertilizer efficiency slow release effect is improved, the using space of bio-charcoal as a soilless culture substrate is increased, and the prepared bio-charcoal granular organic fertilizer serves for soilless culture industrialization and roof greening projects.

The invention relates to a charcoal-based organic medical fertilizer, and a preparation method and application thereof. The organic medical fertilizer comprises the following raw material components in percentage by weight: 0.1%-20% of thiamethoxam, 20%-80% of biomass charcoal, 10%-50% of urea and 1%-15% of an adhesive. The preparation method of the organic medical fertilizer comprises the following steps: uniformly mixing the biomass charcoal, the urea, the adhesive and the thiamethoxam to obtain a mixed material; adding water into the mixed material and uniformly carrying out stirring to obtain a water-containing material; and granulating the water-containing material, and carrying out drying to obtain the organic medical fertilizer. According to the organic medical fertilizer disclosedby the invention, thiamethoxam, biomass charcoal and urea are combined, and the three components can achieve an interaction synergistic effect, so that the insecticidal effect and fertilizer efficiency are obviously improved, and simultaneous reduction of farmland chemical fertilizers and pesticides can be achieved. Meanwhile, the lasting period of the pesticides and fertilizers can be prolonged,crop growth is effectively promoted, the crop yield is increased, and the farmland application amount and application frequency of fertilizers and pesticides can be reduced.