107 results about "Urease Inhibitors" patented technology

The invention relates to a particulate composition comprising, or substantially consisting of, urea, an inhibitor, preferably a urease inhibitor and / or a nitrification inhibitor, and an additive, wherein the additive comprises components (i) and (ii): (i) a carboxylic acid or an anhydride, salt, or derivative thereof; preferably a carboxylic acid salt or a carboxylic acid derivative, more preferably a carboxylic acid salt; and (ii) a polar polymer; preferably a water-soluble polar polymer. The invention further relates to a process for preparing the particulate composition, an additive for a particulate composition, and the use of the particulate composition as a fertilizer.

The present invention relates to increasing and / or maintaining nitrogen content in soil by administration of nitrogen sources particles coated with urease inhibitors. In one embodiment, urease inhibitors are dispersed in an improved organo liquid delivery system at concentration levels of 60-95%. In another embodiment, urease inhibitors were applied in a non-aqueous, organo liquid delivery system coating nitrogen sources particles utilizing simple blending equipment at temperatures of 20°-70° C. Another embodiment discloses dry, flowable nitrogen sources coated with a urease inhibitor which can be administered directly to the soil, to a dry natural and / or a manmade fertilizer or to a liquid fertilizer which provides for the reduction of nitrogen loss from the soil. In another embodiment, a composition of urea and <0.2% dimethyl sulfoxide improves the crush resistance of the urea particles.

The invention relates to a method for efficiently and accurately measuring the content of a urease inhibitor in a stabilized fertilizer. The method comprises the following steps: preparing a sample solution; carrying out digestion treatment on the sample solution; carrying out chromogenic reaction; measuring the absorbance of the blue complex by using a 3cm cuvette under the wavelength of 710 nanometers by using a spectrophotometer; and calculating the content of the total effective components of the urease inhibitor in the sample according to a relational expression between the phosphorus content and the absorbance. According to the invention, accurate measurement of the content of the target component can be realized through chemical digestion, chromogenic reaction and photometric analysis, the measurement method is simple and reliable, the measurement method shows significant advantages in the aspect of urease inhibitor content measurement, and powerful technical support can be provided for quality control and performance evaluation of related products. Compared with the existing liquid chromatography, the method has the advantages that the cost advantage is obvious, the acquisition cost and the maintenance cost of a liquid chromatograph and matched equipment thereof can be saved, accurate determination can be carried out only by using a conventional detection appliance, and the method has good universality.

The invention relates to a low-cost high-stability urease inhibitor and a preparation method and application thereof.The preparation method includes the steps that montmorillonite is modified with inorganic acid to obtain inorganic acid modified montmorillonite, then hydrogen ions in the inorganic acid modified montmorillonite are exchanged with a cationic surface active agent to obtain quaternary ammonium salt surface active agent modified organic montmorillonite, and the quaternary ammonium salt surface active agent modified organic montmorillonite is used for preparing the urease inhibitor. After montmorillonite is subjected to organic modification, the hydrophobicity is greatly improved, and the organic modified montmorillonite has hydrophilicity and hydrophobicity. The organic modified montmorillonite interacts with amino acid residues in a urease flap region due to the hydrophobic effect, so that the amino acid residues are gathered in the organic modified montmorillonite due to the hydrophobic effect, urease conformational change is caused, catalytic activity on urea is lost, and the organic modified montmorillonite has a remarkable urease inhibition effect, is stable in chemical property and non-toxic in material, and can be used for preparing a novel urease inhibitor. The fertilizer is easy to disperse in fertilizer and soil and low in price.

The invention discloses a saline-alkali soil improvement and disease resistance double-effect controlled release fertilizer and a preparation method thereof. The fertilizer comprises 18-22% of biochar, 12-18% of furfural residues, 8-12% of cow dung compost and 6-10% of potassium humate. 5-7% of aluminum sulfate, 4-6% of sulfur and 3-5% of zeolite; the microbial inoculum comprises the following components in percentage by weight: 1.5 to 2.5 percent of saline-alkaline bacillus, 0.8 to 1.2 percent of bacillus subtilis and 0.8 to 1.2 percent 8-12% of a sodium polyacrylate coating, 4-6% of a sulfur coating and 1-3% of polyglutamic acid; 0.8 to 1.2 percent of humic acid chelated iron, 0.8 to 1.2 percent of algal polysaccharide and 0.8 to 1.2 percent of urease inhibitor; 0.8 to 1.2 percent of zinc sulfate, 0.5 to 1.0 percent of manganese sulfate and 0.5 to 1.0 percent of borax. The fertilizer can reduce the pH and conductivity of soil, increase the organic matter content of the soil and effectively improve the physicochemical properties of the soil, meanwhile, by adding the microbial agent, the disease resistance of crops can be effectively improved, the morbidity and disease index of the crops can be reduced, and nutrient release of the fertilizer has a sustained and controlled release characteristic; the initial release rate and the cumulative release rate of nitrogen are both lower than those of common chemical fertilizers, and the cumulative release rate of nitrogen is moderate within 60 days, so that the nutrient requirements of crops in different growth stages can be met.

The invention relates to a particulate composition comprising, or substantially consisting of, urea, an inhibitor, preferably a urease inhibitor and / or a nitrification inhibitor, and an additive, wherein the additive comprises components (i), (ii), and optionally (iii): (i) one or more polyhydric alcohols; preferably one or more carbohydrates, preferably selected from monosaccharides, disaccharides, and oligosaccharides; (ii) a first polymer, preferably an amine-containing polymer; more preferably a polyvinylamine or a polyalkyleneimine; and (ii) optionally, a second polymer, preferably a polar polymer; more preferably a water-soluble polar polymer. The invention further relates to a process for producing the particulate composition, an additive for a particulate composition, and the use of the particulate composition as a fertilizer.

An improved solvent system for the formulation and application of N-alkyl thiophosphoric triamide urease inhibitors. These formulations provide safety and performance benefits relative to existing alternatives and enable storage, transport and subsequent coating or blending with urea based or organic based fertilizers. These formulations are comprised primarily of environmentally friendly aprotic and protic solvents (particularly dimethyl sulfoxide and alcohols / polyols) to stabilize the urease inhibitor.

The invention discloses a saline-alkali soil rhizosphere microdomain soil improvement and fertilization fertilizer and a preparation method thereof, and belongs to the technical field of saline-alkali soil treatment. The fertilizer is composed of a microbial inner core, a slow release fertilizer secondary outer layer and a soil conditioner outer layer, the microbial inner core is composed of a compound microbial agent (composed of nitrogen-fixing bacteria, phosphate solubilizing bacteria and live potassium bacteria), biochar and a polymer organic membrane material, the slow release fertilizer secondary outer layer is composed of a chemical fertilizer, an inhibitor (a nitrification inhibitor and / or a urease inhibitor) and amino acid, and the soil conditioner outer layer is composed of a soil conditioner outer layer. The soil conditioner outer layer is composed of a soil conditioner special for saline-alkali soil improvement. The method has the beneficial effects that (1) the pH value of the soil is adjusted and the soil structure is improved, so that the microbial flora can better adapt to the soil environment of the saline-alkali soil; and (2) the biochar and the isolating membrane effectively protect the activity of microorganisms, and the microorganisms are released when the pH value and the salt-based ions of the soil around the rhizosphere reach a lower level, so that the saline-alkaline obstacle of the growth of the microorganisms is overcome.

The invention discloses a straw returning water-nitrogen synergistic method based on a biochemical inhibitor, and belongs to the technical field of agricultural resources and environments. The straw returning water-nitrogen synergistic method based on the biochemical inhibitor comprises the following steps that in an annona squamosa-soybean interplanting system, a water-nitrogen synergistic agent is added into an annona squamosa-soybean interplanting system; the nitrogen release and straw decomposition process is regulated and controlled through the synergistic effect of the biochemical inhibitor and water management, short-term crop requirements and long-term soil fertilization are both considered, and the water and nitrogen utilization efficiency is improved. According to the invention, a comprehensive strategy of'regulation and control of nitrogen release by a biochemical inhibitor and collaborative management of water and nitrogen 'is adopted. Release of nitrogen fertilizer is delayed through the urease inhibitor, straw decomposition and crop requirements are matched, and short-term nitrogen starvation of soybeans is avoided; generation of nitrate nitrogen is reduced through the nitrification inhibitor, nitrogen leaching and denitrification loss are reduced, and the nitrogen fertilizer utilization rate is increased; the irrigation amount is adjusted according to the straw decomposition stage and the crop growth stage, microbial decomposition is driven, and meanwhile the carbon conversion efficiency is improved.

The invention relates to the technical field of microorganisms and particularly discloses paenibacillus mucilaginosus as well as a microbial agent and application thereof. The preservation number of the paenibacillus mucilaginosus N-002 is CGMCC (China General Microbiological Culture Collection Center) No.32752, and the preservation number of the paenibacillus mucilaginosus N-002 is CGMCC No.32752. The paenibacillus mucilaginosus N-002 provided by the invention can produce a urease inhibitor and indoleacetic acid at high yield and has no denitrification effect, the urease inhibitor produced by the paenibacillus mucilaginosus N-002 can reduce the urease activity of soil, significantly reduce the ammonia emission and nitrous oxide emission of the soil, especially after a nitrogen fertilizer is applied, is beneficial to soil nitrogen element maintenance, improves the fertilizer efficiency of the nitrogen fertilizer, and has a good application prospect. Meanwhile, the influence of emission of ammonia and nitrous oxide on the environment is reduced; the strain has no denitrification effect, and can increase the proportion of non-denitrifying bacteria in soil and reduce the denitrification effect of the soil after being applied to the soil, so that the emission of nitrous oxide in the soil is reduced, and environmental protection is facilitated.

The invention discloses a preparation method of a slow-release fertilizer based on a silkworm excrement carrier simultaneously loaded with urea and a urease inhibitor. The method comprises the following steps: firstly, by taking silkworm excrement as a raw material, adding phanerochaete chrysosporium, aspergillus niger and bacillus subtilis complex microbial inoculants for fermentation; and fermenting at 30-35 DEG C for 3-4 days. After fermentation is finished, weighing the crushed fermented silkworm excrement, urea and a urease inhibitor according to the mass ratio of (6-7): 1: 0.08, adding water, and stirring and mixing, so that the urea and the urease inhibitor are fully loaded into a pore structure of the silkworm excrement; and drying and granulating to obtain the silkworm excrement-based slow-release fertilizer. And the loaded fertilizer realizes slow release of nitrogen by virtue of the synergistic effect of a silkworm excrement hydrogen bond polymerization structure and the urease inhibitor, has a remarkable effect on crops with long growth cycle and high nitrogen demand, and has both environmental protection and economic benefits.

The invention discloses a microorganism urease-based foundation vacuum reinforcement device and reinforcement method, belongs to the technical field of foundation reinforcement, and solves the problem that urease inhibitors and mineralization reaction byproducts are enriched in soil and cannot be discharged after existing microorganism-induced soil mineralization reinforcement. The device specifically comprises a model box, a sealing assembly, a vacuum pipe set and a grouting pipe set. One end of the vacuum tube group penetrates through the sealing assembly and extends into the model box, and the other end is connected with the vacuum pump; calcareous sand is filled in the model box; one end of the grouting pipe set penetrates through the sealing assembly and is embedded in the calcareous sand, the other end of the grouting pipe set is connected with a grouting pump, and the grouting pump is connected with a slurry tank through a slurry pipe. In the present invention; the grouting pipe group is buried in the calcareous sand, and a microbial urease solution can be injected into the deep layer of the calcareous sand, so that the deep layer of the calcareous sand can be effectively reinforced; and mineralization reaction by-products can be pumped out of the model box through the vacuum pump, so that the reinforced calcareous sand is more compact and non-toxic to the environment.

This invention discloses a soil improvement and fertilization fertilizer for rhizosphere micro-domains in saline-alkali land and its preparation method, belonging to the field of saline-alkali land management technology. The fertilizer consists of a microbial core, a slow-release fertilizer sub-outer layer, and a soil conditioner outer layer. The microbial core is composed of a compound microbial agent (composed of nitrogen-fixing bacteria, phosphate-solubilizing bacteria, and potassium-active bacteria), biochar, and a high-molecular organic membrane material. The slow-release fertilizer sub-outer layer is composed of chemical fertilizers, inhibitors (nitrification inhibitors and / or urease inhibitors), and amino acids. The soil conditioner outer layer is composed of a soil conditioner specifically for saline-alkali land improvement. The advantages of this invention are: (1) it first adjusts the soil pH and improves the soil structure, so that the microbial community can better adapt to the soil environment of saline-alkali land; (2) the biochar and the isolation membrane effectively protect the microbial activity, and release the microorganisms when the soil pH and base ions around the rhizosphere reach a low level, overcoming the saline-alkali barrier to microbial growth.

The invention discloses a deodorization composition, a deodorization spray and a preparation method and application thereof. The deodorization composition is prepared from the following components in parts by weight: 0.1 to 5 parts of copper ion deodorant, 0.1 to 3 parts of urease inhibitor, 0.1 to 2 parts of compound biological enzyme, 0.1 to 3 parts of stabilizer, 0 to 2 parts of bactericide and 75 to 99.9 parts of solvent. The composition provided by the invention has an excellent deodorization effect on pet urine, and can realize visualization of urine removal. The deodorization composition provided by the invention has an excellent synergistic removal effect on the odor of ammonia gas and cat urine; in addition, the sterilization rate on various bacteria is excellent. In addition, the copper ions in the deodorization composition and uroporphyrin in the cat urine can form a metal-porphyrin complex, so that original green fluorescence in the cat urine is quenched, and the removal of the cat urine by consumers is visualized and perceivable.

The present invention relates to urease inhibitor compositions containing tert-butylhydroquinone and optionally an additive component to enhance the inhibitory properties of tert-butylhydroquinone. Further described are uses of these compositions in agriculture to increase nutrient uptake and inhibit urease enzyme activity.

The invention discloses an anti-leaching nutrient slow-release synergistic compound fertilizer, and particularly discloses an anti-leaching nutrient slow-release synergistic compound fertilizer and a preparation method thereof. The compound fertilizer comprises the following components in parts by weight: 30-50 parts of urea particles, 15-25 parts of monoammonium phosphate, 20-30 parts of potassium sulfate, 2-5 parts of a slow-release synergistic coating agent, 1-3 parts of a bonding wrapping layer and 10-20 parts of a filling material. The slow-release synergistic coating agent comprises polyaspartic acid (PASP) and a composite inhibitor (a urease inhibitor and a nitrification inhibitor), and the bonding wrapping layer is made of a polyvinyl alcohol / sodium polyethylene acid-based cementing material. The preparation method comprises the following steps: mixing and granulating raw materials, carrying out primary coating (slow-release synergist), carrying out secondary coating (bonding a coating layer), and drying and screening. Through the synergistic effect of the double coating technology and the compound inhibitor, the nitrogen conversion and release are obviously delayed, the nutrient leaching loss is reduced by 20-40%, the fertilizer utilization rate is improved by 25-30%, and the compound fertilizer is suitable for high-temperature and rainy areas.

The present invention comprises one or more organic solvents that create a non-aqueous organo solvent delivery system, (NOSDS), and one or more Organo Polycarboxylate functionalities, OPCF, that results in a stable, non-aqueous solution that can easily, safely, evenly and economically coat nitrogen source granules and / or be added to a mobile liquid form of a nitrogen source such as an aqueous dispersion, pressurized ammonia gas or molten urea and / or molten modified urea. Using these solvents provides more flexibility for nitrogen source manufacturers to produce nitrogen sources designed for a particular soil or plant. The liquid solutions are comprised of NOSDS and OPCFs and one or more of a) nitrification inhibitors, b) urease inhibitors, c) pesticides, d) fungicides, e) herbicides, f) insecticides and g) micronutrients.

The invention relates to a method for producing particles comprising urea and at least one urease inhibitor and / or at least one nitrification inhibitor, and to a suitable apparatus for carrying out the method.

The invention relates to a stabilized fertilizer containing antibacterial peptide and a preparation method thereof, the stabilized fertilizer containing antibacterial peptide is characterized by containing jerusalem artichoke antibacterial peptide; the jerusalem artichoke antibacterial peptide is a product obtained after jerusalem artichoke residues are subjected to enzymolysis. The enzymolysis is protease enzymolysis; the protease is acid protease or alkaline protease. The antibacterial peptide-containing fertilizer prepared by the invention can meet the requirement of a stable fertilizer without additionally adding a nitrification inhibitor or a urease inhibitor.

An improved solvent system for the formulation and application of N-alkyl thiophosphoric triamide urease inhibitors. These formulations provide safety and performance benefits relative to existing alternatives and enable storage, transport and subsequent coating or blending with urea based or organic based fertilizers. These formulations are comprised primarily of environmentally friendly aprotic and protic solvents (particularly dimethyl sulfoxide and alcohols / polyols) to stabilize the urease inhibitor.

The application relates to the field of microbial technology, and particularly discloses a Priestia megaterium, a microbial agent thereof and application. The Priestia megaterium NPKM-001 has a preservation number of CGMCC No. 32751. The Priestia megaterium and the preparation thereof provided by the application have great application value in crop planting, and are particularly suitable for application of urea to crops. The strain has significant phosphorus solubilization capacity, high urease inhibitor and indole acetic acid yield, and no denitrification function, can realize multiple goals of promoting crop growth, improving yield, increasing planting benefits and reducing environmental pollution, has wide application in agricultural planting, provides a new scheme for green agriculture, helps microbial fertilizer strain updating, and promotes sustainable development of green agriculture.

A liquid fertilizer additive solution composition and methods of making thereof.

The invention relates to the technical field of microorganisms, and particularly discloses prelisteria megatherium, a microbial agent thereof and application of the prelisteria megatherium. The preservation number of the presteria megaterium NPKM-001 is CGMCC (China General Microbiological Culture Collection Center) No.32751, and the preservation number of the presteria megaterium NPKM-001 is CGMCC No.32751. The prelisteria megatherium and the preparation thereof, provided by the invention, have extremely high application value in crop planting, and are particularly suitable for applying urea to crops, and the strain has remarkable phosphorus dissolving and solubilizing capacity, high yield of urease inhibitors and indoleacetic acid and no denitrification function, so that the yield of the urease inhibitors and the indoleacetic acid is increased. The microbial fertilizer can achieve multiple purposes of promoting crop growth, increasing yield, increasing planting benefits and reducing environmental pollution, is widely applied to agricultural planting, provides a new scheme for green agriculture, is beneficial to updating microbial fertilizer strains, and promotes sustainable development of the green agriculture.

The invention relates to the field of compound fertilizer production, and particularly discloses a high-activity urea-based compound fertilizer preparation method, which specifically comprises: 1, melting urea, and uniformly mixing with other components to obtain a mixed slurry; 2, granulating the mixed slurry, and cooling to obtain a fertilizer; step 3, spraying the fertilizer with an anti-blocking agent to obtain a product; the high-activity urea-based compound fertilizer comprises the following components: urea, vermiculite powder, monoammonium phosphate, potassium sulfate, humic acid, a urease inhibitor, a phosphorus activator, an agricultural selenium fertilizer, zinc sulfate, borax and a nitrification inhibitor. Due to the addition of the anti-blocking agent, the compound fertilizer is not easy to block due to moisture absorption, so that the purpose that the urea-based compound fertilizer is not easy to harden is achieved.

The invention discloses a fertilizer synergistic modifier and a processing method thereof. The fertilizer synergistic modifier comprises 40-60 parts of a nutrient regulation and intelligent controlled release component; 1 to 15 parts of a photosensitive synergistic component; 25-45 parts of a carrier, a structure auxiliary agent and a coating material; wherein the nutrient regulation and control and intelligent controlled release component comprises a urease inhibitor, such as N-butyl thiophosphoric triamide (NBPT), a nitrification inhibitor, such as 3, 4-dimethyl pyrazole phosphate (DMPP), humic acid or a salt thereof, such as potassium humate, polyglutamic acid, a seaweed extract, a phosphate-solubilizing / potassium-solubilizing microbial agent, such as bacillus subtilis, and the like. And modified zeolite or mesoporous silica loaded with nitrogen, phosphorus, potassium and trace elements. The invention relates to the technical field of agricultural chemical fertilizers, and provides an intelligent controlled-release fertilizer, which realizes the synergistic interaction of external maintenance, internal strong absorption and environmental adaptation through systematic compounding of mature synergistic components, nano materials with clear photochemical characteristics and intelligent controlled-release carriers, and aims to significantly improve the fertilizer utilization rate, crop yield and stress resistance.

The invention provides a fertilizer synergist. The fertilizer synergist comprises a urease inhibitor, glutamic acid, organic silicon and a load carrier, the invention further provides a preparation method of the fertilizer and application of the fertilizer in improving the fertilizer utilization rate in the dry-farming potato planting process. According to the invention, the space-time synergistic effect of NBPT and L-glutamic acid discovered for the first time is taken as a basic mechanism; nBPT delays urea hydrolysis, and creates a time window for L-glutamic acid to activate root nitrogen transporter; l-glutamic acid is combined with soil particles through carboxyl of L-glutamic acid to form a slow-release microenvironment, meanwhile, root systems are promoted to secrete organic acid, and nitrogen absorption is enhanced; the organic silicon can change the soil agglomeration structure, increase the water holding capacity of the soil and reduce water infiltration and evaporation; through the synergistic effect of the three, the effective retention time of the nitrogen fertilizer in a root zone is remarkably prolonged, and the nitrogen utilization rate and the water utilization efficiency are improved.

Described are compositions (“suspensions”) that contain dicyandiamide (DCD) suspended in particle form in an liquid medium, with optional urease inhibitor, biostimulator, or micronutrient also contained (e.g., dissolved) in the liquid medium, as well as methods of preparing the compositions, methods of using the compositions, and fertilizer products that contain the compositions.

Suggested is the use of at least one fragrance having a molecular weight between 95 to 225 g / mol as a urease inhibitor.

The invention discloses a preparation method and application of a urease inhibitor special for acid soil. The preparation method comprises the following steps: mixing and crushing plant straws, bagasse and other biomass; sequentially carrying out citric acid pretreatment, hydrogen peroxide alkaline oxidation, composite hydrothermal synthesis with nano montmorillonite and an alkaline solution, acid precipitation modification with sulfuric acid, addition of a dispersing agent, loading of a monocalcium phosphate-ferrous sulfate composite active center, standing curing and spray drying. According to the method, an active center is stably embedded into a composite carrier composed of nano montmorillonite and a biomass derivative through a multi-stage modification process. The obtained inhibitor shows high stability and long-term effect in an acid soil environment, and can significantly inhibit urease activity, delay urea hydrolysis, improve nitrogen fertilizer utilization rate and reduce ammonia volatilization loss after being mixed with urea for use. The invention provides a new way for efficient utilization of urea in the acid soil area and recycling of agricultural biomass wastes.

The invention relates to an application of a ruminant non-protein nitrogen feed synergist N-methylglycine and salts thereof as a rumen urease inhibitor in ruminant feeding. The N-methylglycine and the salts thereof have an efficient inhibition effect on rumen urease, and can be used as a novel non-protein nitrogen feed synergist to be combined with urea to replace soybean meal feed to be applied to ruminant feeding.