563 results about "Nitrification inhibitors" patented technology

The invention relates to nitrogen element fertilizer, in particular to a nitrogen element fertilizer composite synergist and a preparation method thereof. The composite synergist consists of a biochemical inhibitor, a synergist, a nitrogen element stabilizer, a carrier and microelements, the weight portion ratio of the materials is 1:0.01-1: 0.01-0.5: 0.5-1: 0-0.05, wherein the biochemical inhibitor can be a nitrification inhibitor and a urease inhibitor, the synergist can be poly-aspartic acid, and the nitrogen element stabilizer can be hydrolyzed amino acid, humic acid, alginic acid or alginic acid water soluble salt. The preparation method comprises the following steps: crushing the raw materials, screening the raw materials with a sieve of 30 to 100 meshes, and stirring and mixing the raw materials according to the proportion. The nitrogen element fertilizer composite synergist is suitable for growing long acting nitrogenous fertilizer taking urea or ammonium nitrogen fertilizer as raw materials and can be applied to various soils together with urea or ammonium nitrogen fertilizer so as to effectively prolong the fertilizer efficiency period of the urea or the ammonium nitrogen fertilizer. The fertilizer efficiency period can reach 100 to 120 days. The nitrogen element fertilizer composite synergist has remarkable resistance to diseases, drought and lodging, effectively improves the capability of soil to reserve nutrients, and has good effects for off-season crops.

An inhibitor composition contains dicyandiamide as a nitrification inhibitor, alkyl thiophosphoric triamide as a urease inhibitor, or a combination thereof, dissolved in a liquid medium comprising an organic solvent selected from, among others, one or more polar aprotic solvents, amine solvents, heterocyclic alcohol solvents, and mixtures thereof, is useful in making fertilizer compositions and in a method of fertilizing target plants.

The present invention relates to a controlled release fertilizer, especially, a new controlled release fertilizer and its production process. The controlled release fertilizer comprising coating of environmentally friendly material and fertilizer core, which is nitrous fertilizer containing urease inhibitor and / or nitration inhibitor. The production process includes fertilizer core preparation via spray granulating in fluidized bed, or spray granulating in rotating drum, or disc mixing granulating; and physical coating via spraying in fluidized bed. The fertilizer has good controlled release effect and wide application range, and is environmentally friendly and low in cost.

The invention relates to a coated urea fertilizer, substantially an acetate starch-coated controlled-release urea fertilizer which is prepared by utilizing high-substitute degree acetate starch and a preparation process. The urea is implemented on coating by the coating material which is made by utilizing high-substitute degree acetate starch and other ingredients, so that the acetate starch-coated controlled-release urea fertilizer is generated; the coated urea can be ordinary bulky grain urea or the bulky grain urea with biochemical inhibitor on the surface; the biochemical inhibitor is urease inhibitor or / and nitrification inhibitor, thereby the acetate starch-coated controlled-release urea fertilizer is made. The most notable characteristic of the acetate starch-coated controlled-release urea fertilizer is that: the coating is implemented by utilizing the coating material high-substitute degree acetate starch which can be biodegraded fully, the soil environmental will not be polluted after being fertilized on by the coated urea fertilizer, thereby the coated urea fertilizer is a real green environment-friendly coated fertilizer. And the source of coated material is board and is easy to be obtained, and the price is lower, so the production cost of the coated urea fertilizer can be reduced greatly.

The present invention discloses one series of all-component high concentration water soluble composite fertilizers containing macro elements and trace elements essential for crops and its production process. The composite fertilizers are produced through recipe design, addition of Ca, Mg and other elements, addition of chelated trace elements, penetrant, nitrification inhibitor and other effective components. The composite fertilizers are high quality chemical fertilizers with raised nutrient contents, long acting period, capacity of promoting the absorption of crop, low production cost, capacity of improving soil structure and natural environment, and other advantages.

The invention provides a method for preparing an organic sustained release fertilizer synergist. The synergist comprises the following components in portion by weight: 25 to 60 portions of organic component, 3 to 15 portions of synergistic component, 10 to 13 portions (solid) and 3.5 to 9 portions (liquid) of sustained release component, 0.5 to 5 portions of trace elements, 18 to 30 portions of inorganic nutrient, and 2 to 7 portions of additive. The synergist is prepared by the method of weighing, mixing, spray granulation and low-temperature drying, wherein the organic component contains 2 to 5 portions of humic acid, 25 to 45 portions of mature garbage or barnyard manure, and 2 to 5 portions of residue of monosodium glutamate and sugar; the synergistic component contains 1 to 3 portions of zeolite, 1 to 5 portions of fly ash, and 2 to 5 portions of synergistic agent; the sustained release component contains 10 to 13 portions of bentonite, 0.02 to 0.1 portion of nitrification inhibitor, and 4 to 8 portions of urease inhibitor (liquid); the trace elements contain 0.1 to 1 portion of zinc sulfate, 0.1 to 1 portion of manganese sulfate, 0.1 to 1 portion of borax, 0.1 to 1 portion of copper sulfate, and 0.1 to 1 portion of ferrous sulfate; the inorganic nutrient contains 6 to 9 portions of urea, 7 to 9 portions of ammonium phosphate, and 5 to 7 portions of potassium sulfate; and the additive contains 2 to 7 portions of plaster. The synergist is suitable for the planting of field crops and forest fruits.

A solid urea fertilizer prepared by mixing a solid, flowable, urea formaldehyde polymer with a urea source, such as molten or solid urea to form a fertilizer that has favorable crush strength characteristics, low biuret content, and / or desirable storage and handling properties. The urea fertilizer may contain additionally, an aqueous urea formaldehyde solution or mixture. Optionally, the fertilizer may contain a urease inhibitor and / or a nitrification inhibitor.

The invention relates to a nitrogen fertilizer, in particular to a synergistic slow-releasing nitrogen fertilizer and a preparation method thereof. The fertilizer comprises: urea nitrogen fertilizer, biochemical inhibitors and a synergist, wherein, the weight portion ratio of the urea nitrogen fertilizer to the biochemical inhibitors to the synergist is equal to 1:0.001 to 0.1:0.0005 to 1; the biochemical inhibitors are a nitrification inhibitor and a urease inhibitor and the synergist is poly (aspartic acid), wherein, the weight portion ratio between the urease inhibitor and the nitrification inhibitor is equal to 0.5 to 2:0.5 to 2. The preparation method is as follows: during the operation process of the nitrogen fertilizer, the biochemical inhibitor and the synergist are added into the fertilizer under the molten state of the fertilizer. The synergistic nitrogen fertilizer of the invention is suitable for various plants and soils. The fertilizer has notable disease-resistant, drought-resistant and lodging resistant effects on crops after being applied in soils, can effectively improve nutrients reserving power of soils and has certain effect on succession crops. Gain production can be increased by 8% to 30%, vegetable production can be increased by 14% to 60% and cash crop production can be increased by more than 30% by using the synergistic slow-releasing nitrogen fertilizer.

The present invention provides improved solvent systems for the preparation of liquid formulations of urease or nitrification inhibitors, specifically NBPT, comprising alkylene glycol alkyl ethers. The solvent systems provided good solubility of the urease inhibitor as well as at least one of improved stability, lower flammability, lower toxicity, improved cold temperature storage, improved handling, improved adsorption onto and / or solubility with solid media such as UFP or urea. Methods of making and using the compositions are also provided.

Increasing longevity of the nitrogen content of soil through improved liquid delivery formulations of urease inhibitors and / or nitrification inhibitors designed to apply to fertilizers, especially urea and manure based fertilizers These delivery formulations provide an environmentally sound and inherently safe solvating system that improves the storage stability of the urease inhibitors by utilizing aprotic solvents, maintain the urease inhibitors and / or nitrification inhibitors in solution to storage temperatures of at least 10° C. and provides improved application to fertilizer of urease and / or nitrification inhibitors. These delivery formulations enable safe storage, transport and subsequent application or blending with urea based or manure based fertilizers that can be applied to soil in either a liquid or granular form to provide improved nitrogen retention in the soil for uptake for plant life.

The invention relates to a nitrogen stabilizing agent and application of the nitrogen stabilizing agent. The nitrogen stabilizing agent is a clathrate compound formed by mechanically mixing urease inhibitors, nitrification inhibitors and beta-cyclodextrin or the beta-cyclodextrin and zeolite or the beta-cyclodextrin and attapulgite clay at normal temperature for 1-2 hours, and comprises the following raw materials by weight: 1-20 parts of the beta-cyclodextrin or the beta-cyclodextrin and the zeolite or the beta-cyclodextrin and the attapulgite clay, 1-10 parts of the urease inhibitor and 0.5-10 parts of the nitrification inhibitor, wherein the zeolite is 50-90% of total using amount of the beta-cyclodextrin and the zeolite, and the attapulgite clay is 50-90% of total using amount of the beta-cyclodextrin and the attapulgite clay. The nitrogen stabilizing agent and nitrogenous fertilizers are mixed to produce long-acting controlled release fertilizers for use, wherein the using amount of the nitrogen stabilizing agent is 0.5wt%-10wt% of nitrogen element total amount of the nitrogenous fertilizers. Nitrogen using ratio of the nitrogenous fertilizers is improved, and nitrogen loss is reduced.

The invention relates to a synergistic fertilizer, in particular to a green and environmental protection synergistic slow-releasing nitrogen fertilizer which is mixed in ammonium nitrogen fertilizers or urea, and a preparation method thereof. The fertilizer constituents are as follows: nitrogen fertilizer, a biochemical inhibitor and a synergist, wherein, the weight portion ratio of the nitrogen fertilizer to the biochemical inhibitor to the synergist is equal to 1:0.005 to 0.1:0.0005 to 1; the biochemical inhibitor is a nitrification inhibitor, and the synergist is poly (aspartic acid). The preparation method is as follows: during the operation process of the nitrogen fertilizer, the biochemical inhibitor and the synergist are added into the fertilizer under the molten state of the fertilizer. The synergistic nitrogen fertilizer of the invention is suitable for various plants and soils. The fertilizer has notable disease-resistant, drought-resistant and lodging resistant effects on crops after being applied in soils, can effectively improve nutrients reserving power of soils and has certain effect on succession crops. Gain production can be increased by 8% to 30%, vegetable production can be increased by 14% to 60% and cash crop production can be increased by more than 30% by using the synergistic slow-releasing nitrogen fertilizer.

The invention discloses an organic microorganism-containing ecological fertilizer and a production method thereof. The ecological fertilizer consists of a three-layer structure, an inner layer is made of compound fertilizer granules, an urease inhibitor and nitrification inhibitor coating is used as a middle layer, an outer layer is made of an organic microorganism coating agent prepared by using an active bacteria packing method; and the production method comprises the steps of mixing and granulating, inhibitor coating, and organic microorganism coating. The production method disclosed by the invention is simple, and a prepared ecological fertilizer is complete in nutrients, ensures a high survival rate due to mixed bacterial manures, ensures long survival time of effective living bacteria, has sufficient inorganic nutrients, is convenient to apply, can avoid topdressing, and promotes the development of non-toxic and harmless fertilizers; and the ecological fertilizer has an obvious antagonism effect on continuous cropping pathogenic fungi, therefore, the proliferation of bacteria is effectively promoted, the micro-ecological environment of soil is significantly improved, and after the crops are harvested, the soil is fertile so that next-stubble crops can grow very well.

Reaction products and methods for making and using the same are provided. The reaction products particularly may include adducts of two or more reactants. The adducts particularly can incorporate a nitrification inhibitor, such as DCD. In particular embodiments, reaction products may be formed from the reaction of formaldehyde, DCD, urea, and an ammonia source. The adducts may be included in agricultural products, including fertilizer compositions and nitrification inhibitor systems. Fertilizer compositions including the adducts can be beneficial for reducing leaching of nitrification inhibitors applied to soil.

The invention relates to a soil fertilizer technique, in particular to a long-acting slow-release corn special blending fertilizer and a preparation method thereof to solve the problems that the nitrogen and phosphorus utilization rate of the fertilizer is low, the after manuring in the corn growth period consumes a large amount of time and labor and the like. The blending fertilizer comprises the following components in percentage by weight: 45 to 58 percent of nitrogen fertilizer, 16 to 25 percent of phosphate fertilizer, 16 to 25 percent of potassium fertilizer, and 4 to 14 percent of nitrogen phosphorus fertilizer synergist; and nutritive substances of the blending fertilizer comprise the following components in percentage by weight: 24 to 28 percent of pure nitrogen, 8 to 12 percent of diphosphorus pentanitride, and 10 to 15 percent of potassium oxide. The preparation method comprises the following steps: adding the granular nitrogen fertilizer, phosphate fertilizer, potassium fertilizer and the nitrogen phosphorus fertilizer synergist into a mixing and stirring machine according to the weight ratio, mixing and stirring the materials evenly to obtain the long-acting slow-release corn special blending fertilizer, and performing sub-package to obtain the finished product; or selecting a urease inhibitor, a nitrification inhibitor and a phosphate fertilizer synergist to granulate by mixing so as to obtain the granular nitrogen phosphorus fertilizer synergist, and then blending the granular nitrogen phosphorus fertilizer synergist with the granular nitrogen fertilizer, phosphate fertilizer and potassium fertilizer to obtain the finished product. The long-acting slow-release corn special blending fertilizer and the preparation method have simple process and easy implementation, are suitable for one-step basal application without after manuring for corn production in the Northeast, and reduce the usage amount by 10 to 20 percent without reducing the yield.

A solid urea fertilizer prepared by mixing a solid, flowable, urea formaldehyde polymer with a urea source, such as molten or solid urea to form a fertilizer that has favorable crush strength characteristics, low biuret content, and / or desirable storage and handling properties. The urea fertilizer may contain additionally, an aqueous urea formaldehyde solution or mixture. Optionally, the fertilizer may contain a urease inhibitor and / or a nitrification inhibitor.

This invention relates to controlled release fertilizer, to be specific, it is a control efficiency fertilizer and its manufacturing technique. The control efficiency fertilizer is composed by capsule and fertilizer core, the core is nitrogen compound fertilizer with nitrification inhibitor, the capsule is acrylic resin or compound of acrylic resin and ethyl cellulose. The core is produced by blending comminution granulation; fluidized bed spray painting is used on capsule technique. Acrylic resin or compound of acrylic resin and ethyl cellulose is dissolved in ethanol solution. Inorganic membrane amendment and plasticizer are added to the solution, then fluidized state capsule surface is sprayed coated to form smoothing, continuous, uniform capsule. It can control nutrition release and transformation of fertilizer nitrogen efficiently, greatly evaluate the availability of azophoska, and the manufacturing cost is below high molecular polymer capsule compounding fertilizer which has equal fertilizer efficiency.

The invention discloses a water-soluble mineral fertilizer, belongs to the field of crop fertilizers, and particularly relates to a water-soluble inorganic mineral fertilizer. The water-soluble mineral fertilizer is composed of an A component, a B component and a C component, wherein the A component is composed of potash feldspar, powdered rock phosphate, medical stones, kieselguhr, bentonite and a water-soluble hydrophilic grafting agent; the B component is composed of urea, biological nitrogen-fixing bacteria, a urease inhibitor, a nitrification inhibitor and carboxymethyl starch, and the C component is composed of polyaspartic acid, polyyvinylpyrrolidone and casein. A preparation method of the water-soluble mineral fertilizer takes an inorganic mineral powder body as a main raw material, the water-soluble hydrophilic grafting agent is utilized, and the inorganic mineral powder body is dissolved in the water to form a stability colloid. The water-soluble mineral fertilizer provided by the invention contains a large number of nitrogen phosphorus and potassium elements and also contains different medium / trace elements and rare earth elements required by the growth of a plant, a soil structure is improved, the growth of the plant is improved, the product quality of a crop is improved, a raw material is easily available, the price is low, the raw material is non-pollution, the production technology is simple, and a market prospect is wide.

The invention relates to a process for preparing controllable releasing long effective organic-inorganic compound fertilizer, which in detail is a process comprising mixing nitrogen, phosphorous, potassium, medium-minimum element according to a certain proportion, adding a certain amount of inhibitor of urea or nitrification inhibitor and the mixture according to fertilizer raw material and usage. The ratio between organic and inorganic nitrogen is 1: 0.5-2, and the consumption of inhibitor is 0.2-8% of nitrogen. The fertilizer efficiency can be prolonged enough to cancel top dressing once with base application. The product is characterized by even particle size, long fertilizer durability, high utilization rate, safety, environmental friendly and ideal fertilizer for non-harm food and green food.

The invention relates to a controlled-release fertilizer, substantially a resin-coated controlled-release fertilizer which is prepared by coating with biochemical inhibitor on the surface of urea granules and a preparation method. The urease inhibitor or / and nitrification inhibitor is mixed with the copolymer of acrylic resin and ethyl cellulose as well as organic solvent to form the suspension; and the suspension is equably coated on the surface of the urea granules so as to make the coated urea core fertilizer; and then the surface of the coated urea core fertilizer is wrapped with crylic acid resin film. Based on making the coated inhibitor urea core fertilizer with the biochemical inhibitor in the first layer, the coating is implemented, which are processed in two steps. The most notable characteristic of the controlled-release fertilizer is that the coating is implemented on the basis of making the coated inhibitor urea core fertilizer with the biochemical inhibitor in the first layer, thereby the coating is tight, and the result on controlling biochemical inhibitor and urea release is obvious.

The invention discloses a long-acting synergistic controlled release fertilizer, which mainly comprises a nitrogen fertilizer, a phosphate fertilizer, a potash fertilizer, a biological inoculant, a urease inhibitor, a nitrification inhibitor and poly(aspartic acid). Specifically, in terms of weight percentage, the nitrogen fertilizer accounts for 10-60, the phosphate fertilizer accounts for 10-60, the potash fertilizer accounts for 10-60, an organic biological multielement compound agent accounts for 5-50, wherein the biological inoculant accounts for 6-8, a liquid binder accounts for 3-5, a filling material accounts for 10-20, livestock and poultry manure or humic acid accounts for 50-80, the urease inhibitor accounts for 0.1-0.15, the nitrification inhibitor accounts for 0.15-0.2, and the poly(aspartic acid) accounts for 6-20. The invention aims to overcome the defects in the prior art, ordinary fertilizers have the disadvantages of short effective period, unreasonable nutrient proportion, unscientific and unbalanced nutrient supply, especially the nitrogen fertilizer conflict is more prominent. The long-acting synergistic controlled release fertilizer is released along with the absorption rate of crops, fertilizer loss can be effectively reduced, and saving, yield increase, synergia, convenience, environmental protection and multiple objectives can be achieved, and agricultural sustainable development can be realized. The long-acting synergistic controlled release fertilizer is simple and feasible in application, and is suitable for China's actual conditions, thus being an inevitable course for the world fertilizer development in the 21st century.

The invention relates to a preparation method and application for efficient urea and a relative, and the preparation method and application is formed by the polymerization amino acid or the salt with a weight proportion of 0.01 to 2.0, urease inhibitor with weight proportion of 0.01 to 0.2, the nitrification inhibitor with weight proportion of 0.01 to 0.6, and the common urea with weight proportion of 97.2 to 99.97. The efficient urea is produced by adding the mixture solution of polymerization amino acid or the salt, the urease inhibitor and the nitrification inhibitor into the common urea at fusing state, and then mixing and granulating. The invention provides the application of the efficient urea in agriculture; for the field crop, the economic crop, the fruit and vegetable, and the flowers, the efficient urea can promote to comprehensively regulate the physiological and biochemical effect inside the plant so as to sufficiently excite the plant endogenous somatotropin and accelerate the nutrition producing, as well as improving the utilization and absorption of the urea, increasing the utilization rate by 20 percent to 60 percent. By the bonding effect of the polymerization amino acid or the salt molecule chemical bond and the effect of the urease inhibitor and the nitrification inhibitor, the invention slowly releases the urea in the soil, and increases the releasing time from 50 days up to around 120 days.

The invention relates to a fertilizer synergist and application thereof, belongs to the field of a fertilizer, and aims at solving the technical problem, namely providing an efficient, safe and inexpensive fertilizer synergist. The fertilizer synergist disclosed by the invention comprises the following active components: 1-10 parts of polymerization amino acid and 0.5-2 parts of nitrification inhibitor, wherein the nitrification inhibitor is a compound with inhibiting effects on nitrobacteria and denitrifying enzyme in soil. Furthermore, the invention also discloses a preparation method and application of the fertilizer synergist. The polymerization amino acid in the active components of the fertilizer synergist disclosed by the invention is a polymer biopolymer of amino acid. Thus, the fertilizer synergist is easily biodegraded, and safe to the soil and environment, and has the advantages of being efficient, safe and inexpensive.

The invention relates to coated carbamide, in particular to a totally biodegradable coated carbamide and a preparation method thereof. The coated carbamide consists of a coated layer and a carbamide core. The main body of the coated layer is polylactic acid and / or polybutylene succinate. The coating process adopts fluidized bed spraying-coated technology, and comprises the following steps: dissolving polylactic acid and / or polybutylene succinate in trichloromethane, adding carboxymethylcellulose, organic and / or inorganic conditioner, urease and / or nitrification inhibitor in the solution, spraying and coating the surfaces of the fluidized carbamide after uniformly mixing the mixture under the stirring of a stirrer to form the uniform and complete organic polymeric membrane layer. The process has the advantages of easy implementation, and capacity of effectively slowing down the release of the nutrient to the outside and the conversion rate of nitrogen in soils, effectively controlling the release of the nitrogen nutrient in soils, and reducing the pressure on environment caused by the rapid release of nutrient. The coated material can be totally biodegradable, and the degradation products have no secondary pollution to the environment.

The invention discloses a melt granulated polypeptide stable fertilizer and a preparation method thereof, relating to the field of compound fertilizers. The preparation method comprises the following steps: proportionally preparing urea, monoammonium phosphate, ammonium chloride, potassium chloride, compound urease inhibitor, compound nitrification inhibitor, polypeptide synergist and talcum powder; and heating the raw materials, mixing, carrying out spray granulation, cooling, screening, measuring and packaging to obtain the finished product. The stable fertilizer disclosed by the invention has the advantages of high utilization ratio, no pollution and obvious yield increase effect, promotes absorption of microelements, improves the quality of the crops, and enhances the stress tolerance.

The invention discloses a melt granulation polypeptide stability lost control compound fertilizer and a preparing method thereof, which relate to the technical field of compound fertilizers. The melt granulation polypeptide stability lost control compound fertilizer adopts urea, monoammonium phosphate, ammonium chloride, potassium chloride, zinc oxide, ferrous oxide, manganese sulfate, combined urease inhibitors, combined nitrification inhibitors, polypeptide synergist and fillings as raw matreials, and all the raw materials are dosed according to a specified ratio. The polypeptide stability lost control compound fertilizer product is obtained through processes such as mixing stirring, spray granulating, cooling curing, sieving, measuring and packing. The melt granulation polypeptide stability lost control compound fertilizer product has the advantages of improving fertilizer use ratio, being completely degraded without residuals and being high in absorbed efficiency.

The present invention relates to increasing longevity of the nitrogen content of soil through improved liquid delivery formulations of nitrification inhibitors. The liquid formulation can also be comprised of nitrification inhibitors and optionally urease inhibitors that are blended solutions of each. The nitrification inhibitors are present in a mixture that comprises both a protic and an aprotic solvent system. The novel formulations are designed to be applied to fertilizers, especially urea and manure based fertilizers. The delivery formulations provide an environmentally sound and inherently safe solvating system that improves the storage stability of the urease inhibitors by utilizing liquid organic non-water containing solvents, maintains the nitrification inhibitors in solution to storage temperatures of at least 10° C., and provides improved application to fertilizer of nitrification inhibitors. These delivery formulations enable safe storage, transport and subsequent application or blending with urea-based or manure-based fertilizers that can be applied to soil in either a liquid or granular form to provide improved nitrogen retention in the soil for uptake for plant life.

The invention discloses an efficient slow-release urea. The efficient slow-release urea is prepared by coating urea by utilizing a coating slow-release solution and drying and solidifying the coated urea, wherein the coating slow-release solution consists of the following components in percentage by mass: 1 to 5 percent of gamma-polyglutamic acid, 1 to 5 percent of nitration inhibitor, 0.5 to 5 percent of adhesive, 0.05 to 2 percent of surfactant and the balance of water; and the pH of the efficient slow-release urea is 5.5 to 6.5. The invention also discloses the preparation method of the efficient slow-release urea. The gamma-polyglutamic acid in the efficient slow-release urea has the effects of coating and chelating the urea and the nitration inhibitor, so that separation of the nitration inhibitor and a nitrogen fertilizer is reduced, leaching and runoff losses of nitrate nitrogen are reduced, one-time fertilization can be realized, top dressing is not required, the utilization rate of the fertilizer can be improved by over 15 percent, and the yield of the crops is increased by 10 to 30 percent.