54 results about "Chelated zinc" patented technology

The invention discloses a water and fertilizer management method for transplanted high-yield indica type two-line hybrid rice, and belongs to the technical field of rice cultivation. Comprising the following steps: (1) applying citric acid chelated calcium magnesium phosphate fertilizer to soil before transplanting; (2) applying coated controlled-release urea and a silicon-zinc fertilizer on the third day after transplanting; (3) when the tiller number reaches 2650,000-2750,000 plants / hm < 2 >, starting intermittent light field drying for three times, and deeply applying potassium magnesium sulphate before field drying; (4) laterally and deeply applying urea and a boron-humic acid chelate when tips of two inverted leaves are exposed; (5) spraying an aqueous solution in a full heading stage, wherein the aqueous solution comprises monopotassium phosphate, chelated zinc and brassinolide. Through staged precise fertilization, special chelating / controlled release fertilizer and water and fertilizer-field drying cooperation, the method has the advantages that the fertilizer utilization rate is increased, the nutritional requirements of rice in each growth period are precisely matched, and water and fertilizer cooperative management is optimized.

The invention relates to the technical field of functional nutritious food, in particular to multi-layer skin nutrition powder with a whole-spectrum skin growth and repair promoting effect and a preparation method and application thereof, the core of the multi-layer skin nutrition powder is composed of a collagen peptide system (60-62%), a proteoglycan system (20-22%) and the like, collagen peptide is compounded with three sources of cattle, fish and chicken, and the multi-layer skin nutrition powder has the advantages that the multi-layer skin nutrition powder is prepared; according to the present invention, with the combination of the following components, the skin structure and activity are jointly promoted by using the synergistic effect of the functional polypeptide compound (2.5-3.5%) and the plant active component (3.5-4.5%) rich in asiaticoside and procyanidine, and the nutrition enhancers (4-5%) such as L-ascorbic acid and amino acid chelated zinc and the food-grade auxiliary materials (8-10%) such as microcrystalline cellulose are integrated in the formula, such that the various systems achieve the synergistic effect so as to achieve the effect of nourishing the skin; through the synergistic compatibility of the three-source collagen peptide, the comprehensive supplement of various types of collagen in skin tissues is realized.

The application discloses a kind of preparation methods of anaerobic self-chelation organic water-soluble fertilizer, belong to agricultural organic water-soluble fertilizer preparation technical field.The method includes: after being crushed and conditioned, organic waste is mixed with nano limited carrier with specific pore size and surface functional group, and biological membrane is constructed in anaerobic reactor;Subsequently, mineralization reaction is carried out, and self-chelation reconstruction program is automatically triggered by online monitoring short-chain fatty acid concentration, and endogenous metabolites and nutrient ions are directionally chelated and self-assembled in nano limited space under the guidance of carrier;Finally, after separation, sterilization and concentration, the finished product is obtained.The application prepares organic-inorganic composite nano fertilizer with average particle size of 80-150nm, chelated zinc ratio of ≥82% and chelated phosphorus ratio of ≥68% without relying on exogenous chelating agent, and the 30-day nitrogen and phosphorus leaching loss rate is less than 17.0% and 11.5%, which has good slow-release performance and agricultural yield-increasing effect, and provides a new technical approach for high-value resource utilization of organic waste.

The invention relates to the technical field of agricultural chemistry, in particular to zinc amino acid chelate, a preparation method thereof and a fertilizer composition. Zinc oxide, amino acid, citric acid and ethylenediamine tetramethylenephosphonic acid tetrasodium salt are used as raw materials, an ethanol aqueous solution with a specific concentration is added through spraying to carry out segmented wetting on the solid raw materials, a strict raw material adding sequence is matched, and the reaction temperature and time are accurately controlled. According to the preparation method, high-energy-consumption concentration, crystallization and spray drying procedures are not needed, so that the production cost is effectively reduced; the biodegradable chelating agent is adopted, so that the environment-friendly effect is achieved; finally, the prepared amino acid chelated zinc product has a high chelation rate which can reach 99% or above, and no precipitate is generated even if the amino acid chelated zinc product is compounded with monopotassium phosphate at a high concentration; the fertilizer is compounded in a macroelement water-soluble fertilizer and keeps stable for a long time under an accelerated heat storage condition, and the fertilizer is dissolved in water after heat storage and does not generate precipitates.

This invention relates to the field of agricultural fertilizer technology, specifically to a phosphoinositol-chitosan composite organic fertilizer and its preparation method. The organic fertilizer comprises modified phosphoinositol, chitosan graft, humic acid, sugar alcohol chelated zinc, alginate oligosaccharide, bentonite, and a well-rotted organic carrier. Specifically, the modified phosphoinositol and chitosan graft synergistically form a "dual-signal driven" system, effectively activating signaling pathways related to plant root development; the alginate oligosaccharide and sugar alcohol chelated zinc synergistically enhance plant stress resistance; and humic acid and bentonite jointly improve soil structure and achieve slow nutrient release. This organic fertilizer integrates nutrient supply, soil improvement, and physiological regulation, significantly promoting crop root growth, enhancing its resistance to drought, low temperatures, and diseases, and achieving stable yield increases. Furthermore, the raw materials are natural and environmentally friendly, the process is simple, and it is suitable for large-scale production.

The invention provides a water fertilizer for preventing the bending phenomenon of cut-flower roses as well as a preparation method and application of the water fertilizer, and belongs to the technical field of fertilizers. Comprising the following components: potassium nitrate, monopotassium phosphate, calcium nitrate terahydrate, ammonium dihydrogen phosphate, calcium sulfate, magnesium sulfate heptahydrate, chelated zinc, borax, sodium bicarbonate, chelated iron, chelated manganese, chelated copper and sodium molybdate dehydrate. The preparation method of the water fertilizer for preventing the bending phenomenon of the cut-flower roses is simple, quick in effect, low in cost, environment-friendly and safe, and the growth and development process of the cut-flower roses is accurately regulated and controlled by guaranteeing normal water fertilizer supply. The occurrence rate of the bending phenomenon of the cut-flower roses is obviously reduced, the quality of the cut-flower roses is effectively improved, and the quality improvement and efficiency improvement of the industry are promoted.

The invention relates to the technical field of seed treatment, and particularly discloses a seed treatment suspending agent containing prothioconazole, fludioxonil and chlorantraniliprole and a preparation method of the seed treatment suspending agent. The invention discloses a seed treatment suspending agent containing prothioconazole, fludioxonil and chlorantraniliprole. The suspending agent is prepared from the following raw material components in percentage by mass: 5 to 10 percent of prothioconazole microcapsules, 1 to 5 percent of silicon carrier loaded fludioxonil, 1 to 3 percent of chlorantraniliprole, 0.3 to 0.7 percent of lentinan, 0.3 to 0.7 percent of humic acid, 0.3 to 0.7 percent of chelated zinc, 10 to 15 percent of ethylene glycol, 3 to 5 percent of filler, 0.5 to 1.5 percent of dispersing agent, 0.05 to 0.15 percent of thickening agent, 2 to 3 percent of film-forming agent, 10 to 15 percent of oil and the balance of deionized water. The suspending agent disclosed by the invention not only has a relatively good prevention and treatment effect on wheat root rot, but also has a relatively high germination rate of treated wheat seeds.

The invention discloses a flexible self-supporting porous carbon electrode and a preparation method and application thereof, and belongs to the technical field of electrode material preparation. The method comprises the following steps: firstly, carrying out amidoximation modification on polyacrylonitrile felt to prepare amidoxime polyacrylonitrile felt; then carrying out dipping treatment through a zinc salt solution to obtain an amidoxime polyacrylonitrile felt precursor chelated with zinc ions; and finally, through high-temperature pyrolysis conversion, the prepared flexible self-supporting porous carbon electrode material not only retains the flexible characteristic and the fiber structure of the precursor, but also forms a rich pore structure on the surface of the fiber, so that the specific surface area is remarkably improved. According to the structure, a continuous electron conduction network is constructed, an efficient ion transmission channel is provided, and meanwhile the charge storage capacity is improved. Experimental results show that when the material is used as a flexible supercapacitor electrode, the material shows excellent specific capacity and cycling stability.

The invention belongs to the field of feed additives, and discloses a compound feed additive and a preparation method thereof. Comprising the following components: 2 to 5 parts of shiny-leaved yellowhorn leaf extract, 1.5 to 4 parts of hippophae rhamnoides leaf extract, 1.2 to 3.5 parts of eucommia seed extract, 0.8 to 2.8 parts of boxthorn leaf extract, 25 to 50 parts of composite modified tourmaline powder, 4 to 9 parts of synanthrin compound, 3 to 8 parts of composite microspheres, 0.5 to 2 parts of threonine chelated manganese, 1 to 3 parts of methionine chelated zinc, 0.3 to 1 part of glycine chelated selenium and 0.2 to 0.8 part of tryptophan chelated cobalt. 1 to 3 parts of chitosan oligosaccharide phosphate, 0.8 to 2.5 parts of fructo-oligosaccharide phosphate, 0.2 to 0.8 part of vitamin E and 0.1 to 0.6 part of vitamin C; the feed additive overcomes the technical defects of poor stability of nutritional ingredients, low absorption and utilization rate, single function and insufficient synergistic effect of the ingredients of the existing feed additive in the prior art, and is suitable for feeds.

The invention relates to the technical field of fertilizers, in particular to a functional fertilizer product for improving drought resistance of rice and an application method. The invention solves the problem of poor drought resistance of rice. The functional fertilizer product consists of basic nutrient elements, a microcapsule fungicide, an organic synergistic carrier, a composite synergist, a seaweed extract and a nano silicon fertilizer, the microcapsule fungicide is obtained by coating lysine bacillus sphaericus, bacillus megatherium and nitrogen-fixing bacteria with microcapsules; yeast paste and modified charcoal are introduced into the organic synergistic carrier; the modified biochar comprises chelating elements and biochar; the chelating elements comprise amino acid chelated zinc and glycine chelated manganese; the composite synergist adopts polyglutamic acid and potassium fulvate to cooperate with each other. The preparation method adopts a two-step method: firstly preparing the high-temperature-resistant inorganic material and the carrier into the basic master batch, and then adhering the heat-sensitive active substances such as the microcapsule fungicide to the basic master batch through a low-temperature coating technology. All the components have a synergistic effect, and the drought resistance of the rice can be remarkably enhanced.

The application relates to the technical field of organic fertilizer, and discloses a zinc-rich organic fertilizer and a preparation method thereof, the zinc-rich organic fertilizer comprises the following components in parts by mass: organic base material 40-60 parts, composite zinc source 5-8 parts, composite chelating agent 3-5 parts, functional microbial agent 2-3 parts, magnesium sulfate 0.3-0.5 parts, manganese sulfate 0.2-0.3 parts, boric acid 0.2-0.3 parts, ammonium molybdate 0.1-0.2 parts, slow-release coating agent 2-4 parts and zeolite powder 1-2 parts. The zinc source is chelated by using the composite chelating agent, carboxyl and hydroxyl of modified humic acid in the composite chelating agent and phenolic hydroxyl of tea polyphenol form synergistic chelating sites, so that the chelation rate of the composite chelated zinc is improved, and after being applied to soil, the composite chelated zinc is not easy to combine with calcium carbonate and phosphate to form a difficultly soluble compound, and then the utilization rate of effective zinc is greatly improved.

The invention provides a method for determining cysteamine chelated zinc in premixed feed, and belongs to the technical field of analysis and detection. The invention provides a method for determining cysteamine chelated zinc in premixed feed, which comprises the following steps: preparing a cysteamine chelated zinc sample to obtain a near-infrared analysis and prediction sample set; performing first near-infrared analysis on the near-infrared analysis prediction sample set, and obtaining a calibration model according to obtained data; performing second near-infrared analysis on the premixed feed to obtain data of the sample to be detected; the premixed feed contains cysteamine chelated zinc; and obtaining the content of cysteamine chelated zinc in the premixed feed according to the data of the sample to be detected and the calibration model. The determination method provided by the invention has the advantages of no damage, high efficiency, low cost, environmental protection and accurate result.

The invention provides a special multi-growth-period all-element AB water-soluble fertilizer for planting chives in a field and a use method of the water-soluble fertilizer. The water-soluble fertilizer is prepared from the following raw materials in parts by weight: calcium nitrate tetrahydrate, potassium nitrate, ammonium dihydrogen phosphate, monopotassium phosphate, magnesium sulfate heptahydrate, ammonium sulfate, chelated iron, chelated manganese, chelated zinc, chelated boron, chelated copper and sodium molybdate. Water-soluble fertilizer and irrigation water are supplied synchronously, and water and fertilizer are integrated. According to the method, the quality of chive products is improved, and meanwhile, the investment cost is reduced.

The invention relates to the technical field of pesticide preparations, and particularly discloses a potato seed dressing agent with a disease-resistant function, which is prepared from the following raw materials in parts by weight: 8 to 12 parts of N-methoxy-N-o-tolyl-3-(furyl) propanamide, 5 to 8 parts of eugenol polyoxyethylene ether derivatives, 3 to 5 parts of salicylic acid glucoside, 6 to 10 parts of cationized modified chitosan and 2 to 4 parts of EDTA (Ethylene Diamine Tetraacetic Acid) chelated zinc. The preparation method comprises the following steps: treating raw materials; capsule preparation; mixing and granulating; and drying and screening. N-methoxy-N-tolyl-3-(furyl) propanamide is adopted to directly act on a key metabolic link of pathogenic bacteria, a plant-derived derivative plays a broad-spectrum antibacterial role, an inductive component activates a disease-resistant mechanism of potatoes, and meanwhile, cationized modified chitosan and other auxiliary components cooperate with each other, so that slow release of active components is realized, and the disease resistance of the potatoes is improved. The pathogenic bacteria are difficult to generate drug resistance, and the prevention and control effect is long-term and stable.

The invention discloses a fertilizer applicable to wheat and capable of increasing the phosphorus utilization rate and a preparation method of the fertilizer, and aims to solve the problem of low phosphorus utilization rate of wheat. A three-layer composite structure of an inner layer quick-acting phosphorus core (monoammonium phosphate and humic acid chelated zinc and iron), a middle layer microbial slow-release layer (calcium alginate wrapped ammonium polyphosphate and glomus mosseae spores) and an outer layer intelligent response layer (chitosan-carboxymethyl cellulose immobilized phytase) is adopted, and processes of low-temperature drying, ellipse forming and the like are combined for preparation. The fertilizer realizes quick-acting-slow-release-intelligent conversion synergy, the phosphorus utilization rate is increased by 20-25% compared with the traditional phosphorus utilization rate, the microorganism survival rate is greater than or equal to 90%, the enzyme stability is improved, the soil phosphorus loss is reduced, and the application is convenient and efficient.

The invention relates to the technical field of soil improvement and crop disease prevention and control. The invention provides a zinc-silicon synergistic soil conditioner and a preparation method and application thereof.The zinc-silicon synergistic soil conditioner is prepared from, by mass, 5-8 parts of citric acid chelated zinc, 5-8 parts of citric acid chelated zinc, 5-8 parts of citric acid chelated zinc, 5-8 parts of citric acid chelated zinc, 5-8 parts of citric acid chelated zinc, 5- 25 to 40 parts of potassium silicate; 30 to 45 parts of humic acid; 5 to 10 parts of soluble starch; and the balance of deionized water. According to the zinc-silicon synergistic soil conditioner, the pH and the alkalization degree of soda saline-alkali soil are reduced through humic acid, and the rhizosphere microenvironment is improved; the citric acid chelated zinc provides quick-acting zinc, the potassium silicate continuously releases silicon, and the citric acid chelated zinc and the potassium silicate keep high bioavailability under the protection of humic acid; the soluble starch regulates nutrient release and prevents precipitation and inactivation. Field application shows that the morbidity of the rice red blight in the soda saline-alkali soil can be reduced to 5% or below, and synergistic interaction of soil improvement and disease prevention and control is achieved.

The invention discloses seaweed oligosaccharide chelated zinc as well as a preparation method and application thereof. According to the preparation method, gradient heating is matched with pH adjustment, and the seaweed oligosaccharide chelated zinc with the extremely high chelation rate can be obtained. Based on the seaweed oligosaccharide chelated zinc, the seaweed oligosaccharide chelated zinc is compounded with other reagents to obtain the plant growth regulator. All the components of the plant growth regulator can achieve synergistic interaction, and the better yield and zinc increasing effect on rice compared with an existing traditional ionic state zinc fertilizer zinc sulfate heptahydrate and a conventional chelating state zinc fertilizer EDTA chelated zinc is achieved. The invention further provides a method for using the specific plant growth regulator in the early tillering stage and the early heading stage, zinc absorption can be further promoted by using the specific plant growth regulator in sequence, the rice yield is increased, the tillering number of rice is increased, and the zinc content of rice grains is increased.

This invention relates to the field of water-soluble fertilizer technology and discloses a water-soluble fertilizer containing citric acid chelated zinc, comprising the following components by mass percentage: nitrogen source (calculated as N) 15%~20%, wherein nitrate nitrogen accounts for 35%~45% of the total nitrogen source, ammonium nitrogen accounts for 20%~25%, amide nitrogen accounts for 35%~40%, phosphorus source (calculated as P2O5) 15%~20%, potassium source (calculated as K2O) 15%~20%, zinc sulfate (ZnSO4·7H2O) 2.0%~3.5%, boric acid (H3BO3) 0.3%~0.8%, citric acid 3.0%~4.5%, compound amino acid powder 2.0%~4.0%, alginate oligosaccharide 0.5%~1.2%, γ-polyglutamic acid 0.5%~1.2%, DMPP (3,4-dimethylpyrazole phosphate) 0.3%~0.6%, and soluble starch to make up to 100%. This invention utilizes citric acid to chelate zinc and boron in steps with amino acids, and optimizes the ratio of nitrogen, phosphorus, potassium, calcium, and magnesium. This effectively prevents phosphate from forming insoluble substances with metal ions such as calcium and zinc, resulting in a clear fertilizer solution without precipitation, suitable for drip irrigation and sprinkler irrigation systems. In addition to macronutrients, chelated zinc and boron are added to meet the crop's zinc and boron requirements and prevent nutrient deficiency symptoms such as little leaf disease and flowering without fruiting.

The present application belongs to the technical field of compound fertilizer production control, and relates to a production process control method of humic acid chelated zinc compound fertilizer particles. The present application allocates the total amount of zinc source to each monitoring period according to a non-linear decreasing strategy, establishes the addition rate, and reversely corrects the subsequent addition rate in combination with the chelation rate change rate. The chelation rate change rate and the coupling coefficient of temperature-chelation rate are calculated in real time, and the criterion is used to dynamically execute the temperature and speed reduction, speed increase, pulse stirring and stepwise temperature increase cooperative activation mode. When the chelation rate change rate continuously converges, the coupling coefficient maintains positive correlation, and the zinc source addition is completed, the reaction termination condition is determined by multi-index joint determination. The present application solves the problems of mismatching between zinc source addition and reaction progress, difficulty in restoring reaction efficiency by single parameter adjustment, and lag in reaction endpoint judgment in the existing process, realizes the dynamic balance between zinc source supply and chelation capacity, and ensures the stability of the product chelation rate.

The invention discloses a composite asparagus nutrient solution for preventing stem blight and a preparation method thereof. The composite asparagus nutrient solution comprises the following raw materials in parts by weight: basic nutrient components: 3-5 parts of potassium nitrate, 2-3 parts of calcium superphosphate and 1.5-2 parts of magnesium sulfate; the trace element component is prepared from the following components in parts by weight: 0.05 to 0.1 part of chelated zinc, 0.01 to 0.15 part of chelated iron, 0.3 to 0.4 part of boric acid, 0.01 to 0.02 part of manganese sulfate, 0.01 to 0.02 part of sodium selenite and 0.01 to 0.02 part of gibberellin; the plant growth regulator is 6-benzylaminopurine or gibberellin or a combination of 6-benzylaminopurine and gibberellin, and the Chinese herbal medicine extract composition is 2-5 parts. The composite asparagus nutrient solution prepared by the invention improves the production speed of asparagus root systems, enhances the resistance of asparagus and reduces the morbidity of asparagus stem blight.

This invention relates to a high-efficiency release and corrosion-resistant powder coating for concrete formwork, belonging to the field of coating technology. Based on the property that dopamine self-polymerizes to form polydopamine under alkaline and aerobic conditions, this invention allows for the organic self-polymerization and coating of nano-silica. A certain amount of zinc chloride solution is then added, utilizing the catechol structure of polydopamine to chelate zinc ions. Finally, the coating is modified with a modifier formed by the interaction of hydroxyl groups and -NCO groups of propyl isocyanate-3-(triethoxysilyl)propyl and N-(2-hydroxyethyl)trifluoroacetamide, grafting carbon-fluorine bonds to prepare a modified filler. When mixed with other components, the resulting powder coating, when applied to concrete formwork, not only imparts excellent corrosion resistance, making it less susceptible to concrete erosion, but also exhibits good wear resistance, low surface energy, hydrophobicity, and easy release properties, and the coating remains undamaged even after repeated use.

The application relates to the field of agricultural environmental protection technology, in particular to a preparation method of a novel environment-friendly fertilizer capable of reducing soil pollution. 8 The raw material composition comprises, by weight, 50 parts of corn straw biochar, 20 parts of humic acid, 5 parts of bacillus subtilis inoculum with a viable bacterial count of 10 CFU / g, 3 parts of amino acid chelated zinc, 2 parts of sodium carboxymethyl cellulose and 18 parts of deionized water; the application can simultaneously act on heavy metals and organic pollutants in the soil by optimizing the composition of the microbial inoculum and combining with the specific pretreated adsorption carrier, can enhance the fixing capacity for the heavy metals and efficiently degrade the organic pollutants, solves the defects of single pollution reduction function of the existing fertilizer, can effectively cope with the composite pollution scene, and significantly widens the pollution reduction application range of the product.

This invention relates to the field of daily chemical products technology, and discloses a method for preparing polyglutamic acid chelated zinc, a polyglutamic acid chelated zinc composition, and its application. The method includes: dissolving an appropriate amount of sodium γ-polyglutamate powder in water to prepare a sodium γ-polyglutamate aqueous solution; adjusting the pH value to 3.5-4.0; heating to 80-90℃ and maintaining for 6-8 h; cooling to room temperature; and ultrafiltration to obtain a low molecular weight γ-polyglutamic acid aqueous solution; adjusting the pH value of the low molecular weight γ-polyglutamic acid aqueous solution to 4.0-4.5; adding ammonia and water-soluble zinc salt according to a preset ratio; stirring thoroughly to dissolve evenly; and then continuously heating in a water bath at 60-80℃ for 2-4 h to obtain a product solution; ultrafiltration of the product solution through a 0.8-1.2 kDa ultrafiltration membrane; and spray drying the obtained filtrate to obtain polyglutamic acid chelated zinc. The polyglutamic acid chelated zinc obtained by this method has a high chelation rate, very few free zinc ions, relatively stable physicochemical properties, and is produced under mild conditions, with a simple method and no organic solvents.

The invention relates to a composition for solving a'stem flattening phenomenon 'of cut rose and a preparation method of the composition, and relates to the technical field of chemical preparations and agricultural application. Comprising the following raw materials: plant hormones (brassinolide, diethyl aminoethyl hexanoate and compound sodium nitrophenolate) and trace elements (copper sulfate, sugar alcohol boron, chelated magnesium, chelated zinc, chelated iron, chelated manganese and sodium molybdate dehydrate), and particularly relates to a method for regulating and controlling the concentration of the plant hormones and the trace element fertilizer. According to the method, the plant hormones and the microelements of the cut-flower roses in the rapid growth stage of the seed ejection stage are reasonably proportioned and sufficiently supplied, xylems synchronously grow along with epidermal tissues under the appropriate plant hormone and microelement fertilizer concentration, the stem flattening phenomenon is avoided, and normal growth and development of the soilless culture cut-flower roses are guaranteed. The preparation method disclosed by the invention is simple, quick in effect taking, low in cost, environment-friendly and safe, and effectively solves the industrial problem of the'stem flattening phenomenon 'of the cut rosa chinensis.

The invention discloses a preparation method and application of a lignin chelated zinc rice seed coating agent, and the preparation method comprises the following steps: weighing a certain amount of lignin powder, dissolving the powder, adding a zinc salt solution according to a certain proportion, carrying out a chelation reaction, filtering the chelate after the reaction is finished, washing the chelate, standing, filtering, and drying to obtain the lignin chelated zinc; heating and uniformly stirring a lignin chelated zinc sample, a composite film-forming agent and a plasticizer, then adding nano silicon dioxide, mixing to obtain a coating solution, and preserving heat for later use; and weighing a certain amount of rice seeds, immersing the rice seeds into the coating solution, stirring, fishing out, and air-drying to obtain the lignin chelated zinc coated rice seeds. The invention further discloses application of the lignin chelated zinc rice seed coating agent, and the lignin chelated zinc rice seed coating agent can improve the seed germination ability, promote seedling survival and relieve stress resistance. The rice seed coating agent provided by the invention is environment-friendly, can improve the drought tolerance of seeds, can also effectively protect the seeds, and meanwhile, ensures a relatively high germination rate of the seeds.

This invention proposes a polyaspartic acid chelated zinc and its preparation method, belonging to the technical field of polyaspartic acid materials. The preparation method of the polyaspartic acid chelated zinc includes: polymerizing L-aspartic acid under a phosphoric acid catalyst to obtain a polysuccinimide intermediate; and mixing the polysuccinimide intermediate with... α‑ After undergoing a ring-opening grafting reaction with amino acids and aminolated oligosaccharides, polyaspartic acid derivatives are obtained. The polyaspartic acid derivatives are then chelated with zinc salts to obtain the polyaspartic acid chelated zinc. This invention obtains polyaspartic acid chelated zinc by grafting α-amino acids and aminolated oligosaccharides onto polyaspartic acid molecules as modifiers followed by zinc chelation. Compared to ordinary polyaspartic acid zinc, it has a higher molecular weight and stronger chelating functional groups, thus enabling effective chelation of zinc ions. When used as a fertilizer synergist, it can effectively improve crop yield and quality.

The invention discloses high-purity oligopeptide chelated zinc and a preparation method thereof, and the preparation method comprises the following steps: S1, adding an acidic isopropanol aqueous solution into sunflower seed meal powder, and carrying out heating treatment to obtain purified sunflower seed meal; s2, dispersing the purified sunflower seed meal into water under an acidic condition, and treating with a colloid mill to obtain a sunflower seed meal-water mixture; s3, adding compound protease into the sunflower seed meal-water mixture to carry out enzymolysis, carrying out solid-liquid separation, and carrying out ultrafiltration, so as to obtain ultrafiltration permeate liquid; s4, adding zinc hydroxide into the ultrafiltration permeate, and heating to obtain an oligopeptide chelated zinc solid; and S5, adding low-carbon alcohol into the oligopeptide chelated zinc solid, and heating to obtain the high-purity oligopeptide chelated zinc. According to the preparation method, through adjustment of working procedures and selection of raw materials, components in the sunflower seed meal powder are treated in sequence, no additional salt is introduced, and the obtained oligopeptide chelated zinc has the characteristics of being high in sanitary safety, white in color, high in purity and yield and free of oxidation and discoloration of a product.

The invention discloses a high-activity traditional Chinese medicine extract whitening and skin care formula and a preparation process, and belongs to the technical field of cosmetics. The formula comprises the following components in parts by weight: a core whitening composite extract, a rutin-based nano-liposome carrier, a moisturizing matrix, a skin conditioner and deionized water, wherein the core whitening composite extract is prepared by compounding a ganoderma sinensis spore wall-broken enzymolysis extract, an emblic leafflower fruit polyphenol extract and a nacre soluble collagen chelated zinc extract according to a mass ratio of 3: 4: 2. According to the preparation process, double-phase gradient enzymolysis is combined with a low-temperature supercritical COflash extraction and in-situ embedding process, multi-target synergistic whitening can be achieved, the extraction rate, storage stability and transdermal absorption rate of active ingredients are greatly improved, and the product is free of chemical synthesis whitening agents, safe, mild and suitable for large-scale production of cosmetics.

The invention relates to a novel foliar fertilizer for efficiently enriching selenium for crops and a preparation method thereof, and belongs to the technical field of agricultural fertilizers. According to the foliar fertilizer, chitosan is adopted as a coating material, sodium selenite is adopted as a selenium source, cross-linking embedding is achieved through sodium tripolyphosphate (TPP), and a stable chitosan-TPP microcapsule structure is constructed; sodium citrate is introduced into the formula to adjust the complexing state, and chelated zinc, magnesium, calcium and other trace elements can be selectively added to achieve nutrition synergy. The obtained selenium-rich microcapsule has a responsive release characteristic in a neutral pH environment, can stably release the selenium element in a controlled manner, and improves the selenium accumulation level of plant leaves. Compared with the existing direct spraying type inorganic selenium fertilizer, the foliar fertilizer prepared by the invention has the advantages of stable structure, good safety, prevention of crop burn phenomenon, substantial improvement of selenium enrichment efficiency, simple preparation process, low cost and strong field applicability.