5113results about "Nitrate fertilisers" patented technology

A granular agrochemical composition is disclosed including a granular core material having a water soluble portion with a first coating layer applied on the surface of the core material and a second coating layer applied on the surface of the first coating layer. The first coating layer includes a wax composition having a biologically active ingredient incorporated therein and the second coating layer includes a polymeric composition. The granular agrochemical composition exhibits a controlled rate of release of the biologically active ingredient therefrom over a period greater than about 30 days from the date of initial exposure of the granular composition to moisture whereby essentially all of the biologically active ingredient incorporated in the wax material of the first coating layer is released from the granular composition before the water soluble portion of the granular core material is released from the granular composition.

A liquid fertilizer containing wood vinegar liquid or oxalic vinegar liquid and its production are disclosed. The liquid fertilizer consists of urea 1í½20.0%, potassium phosphate 1í½20.0%, potassium nitrate 1í½20.0%, lime nitrate 0.1í½10.0%, magnesium sulfate 0.1í½5.0%, ferrous sulfate 0.1í½5.0%, manganous sulfate 0.1í½5.0%, zinc sulfate 0.1í½5.0%, cupric sulfate 0.1í½5.0%, boron sand or boric acid 0.1í½2.0%, sodium molybdate or ammonium molybdate 0.1í½1.0%, plant hormone or plant regulator, rare earth element or humus acid or pesticide auxiliaries etc. The process is carried out by proportioning and mixing. It can improve bacterium inhibiting and plant growth regulating functions.

The present invention describes a process for converting vapor streams from sources containing at least one nitrogen-containing oxidizing agent therein to a liquid fertilizer composition comprising the steps of: a) directing a vapor stream containing at least one nitrogen-containing oxidizing agent to a first contact zone, b) contacting said vapor stream with water to form nitrogen oxide(s) from said at least one nitrogen-containing oxidizing agent, c) directing said acid(s) as a second stream to a second contact zone, d) exposing said second stream to hydrogen peroxide which is present within said second contact zone in a relative amount of at least 0.1% by weight of said second stream within said second contact zone to convert at least some of any nitrogen oxide species or ions other than in the nitrate form present within said second stream to nitrate ion, e) sampling said stream within said second contact zone to determine the relative amount of hydrogen peroxide within said second contact zone, f) adding hydrogen peroxide to said second contact zone when a level of hydrogen peroxide less than 0.1 % by weight in said second stream is determined by said sampling, g) adding a solution comprising potassium hydroxide to said second stream to maintain a pH between 6.0 and 11.0 within said second stream within said second contact zone to form a solution of potassium nitrate, and h) removing said solution of potassium nitrate from said second contact zone.

The invention discloses a rice slow-release fertilizer and a preparation method thereof. The rice slow-release fertilizer comprises the following raw material components by weight: 25-40 parts of compound bacteria, 500-600 parts of an organic material, 800-1200 parts of an inorganic material, 100-150 parts of a fertilizer core, 20-30 parts of trace elements, 120-150 parts of additives, 70-80 partsof cellulose and 2500-3500 parts of a solvent.

Blends of fertilizer granules and highly absorbent cellulosic granules carrying one or more pesticidal or other active ingredients that resist the formation of actives dust or segregation of the granules and that ensure even and efficient application of both the fertilizer and the active ingredients.

A total nutrient liquid fertilizer containing amino acids comprises, by weights, 6-12 parts of N, 1-6 parts of P, 3-10 parts of K, 1-3 parts of Ca, 1-3 parts of Mg, 9-13 parts of Zn, 2-10 parts of Mn, 1-2 parts of B, 0.5-2 parts of Cu, 0.2-0.5 parts of Mo, 3-10 parts of Fe, 10-15 parts of amino acids, 1-10 parts of a plant growth regulator, 2-5 parts of an organic chelating agent and 30-40 parts of water. The liquid fertilizer provides comprehensive nutrition for plants, enhances the freeze, drought, salt and disease resistance of the plants, enhances the synthesis and translocation of substances in the plants, promotes the formation of adenosine triphosphate (ATP), promotes the photosynthesis and protein synthesis, induces the formation of chlorophyll, promotes the cell protoplasm flow, improves the cell vitality and accelerates the growth of the plants.

The invention discloses a plant nutrition liquid, which is characterized by the following: comprising potassium nitrate, calcium nitrate, magnesium sulfate, ammonium phosphate, potassium sulfate, monopotassium phosphate and so on a good deal of element; comprising edetate disodium, ferrosi sulfas, boric acid, manganese sulfate, zinc sulfate, copper sulfate, ammonium molybdate and so on microelement; comprising azophoska fertilizer and fertilizer booster; including diverse nutritious element of vegetation development; providing nourishing element for large and medium scale bush and small arbor. This invention also discloses a utility scheme in large and medium scale woody plant soilless culture.

An effective conditioner-fertilizer of low and competitive cost particularly formulated for restoring or improving the cultivation properties and productivity of saline or alkaline soils, comprising: a) a chelating substance, for example sodium tripolyphosphate; b) a pH modifying or buffering substance, for example an inorganic acid; c) a surfactant, for example polyethylenglycols; and optionally, d) a plant nutrient substance, for example humic extracts which can advantageously derived from the pecan husk. The synergistic combination of polyphosphates, pH modifying and buffering substances and surfactants in the conditioner-fertilizer formulation significantly improves its effectiveness at a competitive cost. Other ingredients may also be added, for example, sodium lignosulphonate, calcium lignosulphonate and the like for modifying the physical structure of soils. The conditioner-fertilizer can be applied directly to the soil before plantation, mixed with the irrigation water or to the leaves during plant growth.

The invention belongs to the technical field of soil remediation, and in particular relates to a soil remediation agent for treating heavy metal pollution and a production method of the soil remediation agent. The soil remediation agent consists of the following raw materials in percentage by weight: 35 to 65 percent of active molasses yeast waste water chelate powder, 5 to 20 percent of silicon dioxide, 5 to 15 percent of calcium oxide, 1 to 10 percent of magnesium oxide, 0.3 to 10 percent of ammonium persulfate, 5 to 28 percent of humic acid and derivatives thereof, 0.1 to 15 percent of microcapsule inoculants, 0.1 to 5 percent of a macromolecular water-retaining agent, 0.1 to 5 percent of a heavy metal passivant, 1 to 5 percent of auxiliary agents and 1 to 45 percent of inorganic mixed fertilizer. Compared with the prior art, the soil remediation agent provided by the invention has the advantages that the organic waste liquid of yeast industry serves as one of the main raw material, so the environmental pollution caused by the organic waste liquid is reduced and the cost of the soil remediation agent is reduced; precipitation and biological action are combined, so a good effect of treating the heavy metal pollution is achieved; the main components also comprise organic fertilizer and inorganic fertilizer, so the heavy metal pollution can be effectively treated, production and income of crops are increased, continuous cropping resistance of the crops is achieved, and potential application and popularization values are achieved.

The invention discloses an amaranth special soilless culture nutrient solution and a preparation method thereof. The amaranth special soilless culture nutrient solution is prepared by major elements, trace elements and water. The major elements are composed of nitrogen, phosphorus, potassium, calcium, magnesium and sulfur. The trace elements are composed of iron, manganese, copper, zinc, boron and molybdenum. The amaranth special soilless culture nutrient solution is reasonable in component, rich in nutrition and low in cost, wherein raw materials are wide in source and readily available. The amaranth special soilless culture nutrient solution provides various nutrient elements and trace elements required for the growth and the development of amaranth, so that the robust growth of amaranth is realized. The transplanting stock survival rate of amaranth and the fruit and vegetable quality are improved, so that the yield and the quality are increased. The preparation method is reasonable, simple and easy in process, high in efficiency, low in application cost, simple in operation, easy to implement and extremely high in application prospect. The amaranth special soilless culture nutrient solution and the preparation method thereof are convenient to use and apply.

The invention relates to a comprehensive utilization method of high-concentration waste saline water containing Na<+>, Ka<+>, NH<4+>, Cl<->, SO4<2-> and NO<3-> in the coal chemical industry. After the high-concentration waste saline water is subjected to softening for impurity removal and subjected to coagulation sedimentation to remove COD (chemical oxygen demand), the water is concentrated by 20%-30% through an air cooler; then, the water enters second and third concentration systems and a salt mixture recovery system, and sodium sulfate, sodium chloride and sodium nitrate and potassium sulfate mixed salt are concentrated and separated with a multi-effect negative pressure evaporation method; condensed water is recycled. The purity of separated sodium chloride and the purity of separated sodium sulfate are higher than 99%, and sodium chloride and sodium sulfate can be directly sold. The method has remarkable economic benefits and social benefits, is environment-friendly, comprehensively reaches the standard and can be used for comprehensive treatment and utilization of similar high-concentration saline water in other industries, so that the environment-friendly and energy-saving requirements for full utilization of resources are met.

A controlled release fertilizer composition and methods to produce the controlled release fertilizer composition are described. The controlled release fertilizer composition comprises a water soluble fertilizer core that is coated with a polymeric layer, intermediate layer, and a sulfur layer. If desired, the sulfur layer can be coated with an outer water-insoluble layer.

The present invention provides a process for removing ammonia as an aqueous salt solution from an acid gas comprising ammonia and hydrogen sulfide. A strong acid, such as sulfuric acid, is used as a scrubbing agent to convert ammonia to an ammonium salt. Control of pH and stripping in combination with reboiler or evaporators reduces hydrogen sulfide concentration. The ammonium salt is produced as an aqueous solution, which may crystallized to form a solid product. The ammonium salt solution or solid may be used as a fertilizer.

The invention relates to a selenium-rich chitosan nutritional microbial fertilizer. The selenium-rich chitosan nutritional microbial fertilizer is prepared from the following raw materials: sodium selenite, chitosan hydrolysate, compound trace elements, monopotassium phosphate, urea, peptone, yeast powder, NaCl, NaOH, NaNO3, NaCl, NH4Cl, K2HPO4, a beef extract, glucose, starch, calcium carbonate, amino acid, potassium nitrate, ferrous sulfate, magnesium sulfate, trisodium citrate, biochemical enzymes and a mixed bacterium liquid. Due to addition of the chitosan, the viable count of a microbial agent can be kept; the efficacy of the chitosan for keeping the viable count is put into an effective play; due to addition of the chitosan, the amount of bacteria of the microbial agent can reach 20,000,000,000/mL; due to addition of the chitosan to a bacterial manure, the yield of commercial crops can also be increased by 10%-15%; and the nutritional microbial fertilizer has the efficacies of keeping moisture and slowly releasing fertilizer efficiency.

A concentrated, homogenous, stable, water-soluble fertilizer suspension comprising: water-soluble mineral nutrients of at least nitrogen, phosphorous, potassium, calcium, and magnesium; and an organic stabilizing additive; and wherein the pourable, aqueous suspension has water-soluble mineral nutrients amounting to at least about 80 percent by weight (wt. %) of the suspension.

A fertilizer supplying animal nutrients including a core particle having an outer surface and comprising compounds containing animal nutrients, and a coating of urea on the outer surface of the core particle, and further a process of making the fertilizer including the steps of: screening animal nutrient core particles comprising a powdered substance containing an animal nutrient, to a preselected particle size; spraying melted urea onto the surface of the nutrient core particles to produce a coating on the nutrient core particles; granulating the nutrient core particles with sprayed melted urea to produce nutrient core granules; and cooling the nutrient core granules.

The invention relates to a nutrient solution for soilless cultivating leafy vegetables and a preparation method thereof. Molar ratio of nutrient elements in the nutrient solution is: NO3<->: NH4<+>: H2PO4<->: K<+>: Ca<2+>: Mg<2+>: Fe<2+>: Cu<2+>: Zn<2+>: Mn<2+>: B<3+>: Mo<6+>, which is equal to (4 to 6): (3 to 6): (2 to 4): (5 to 8): (4 to 6): (2 to 3): 0.02: 0.0003: 0.001: 0.009: 0.05: 0.0004; the nitrogen is supplied in two forms: NO<3> and NH<4> with a proportion kept between (1 to 3): 1. The nutrient solution has flexible formulation, easy preparation and full nutrition, which can significantly improve nutrient quality of the leafy vegetables and reduce negative influence to environment and human health. The invention can meet the needs of soilless cultivation of the leafy vegetables of different kinds, which is convenient for industrial popularization.

A composition has a core of at least one fertilizer substance and at least one layer of a coating material surrounding the core. The core may contain nitrogen and the coating material may include one or more linear, saturated aliphatic monocarboxylic acids.

Preferred aspects of the present invention provide ammonium nitrate compositions comprising ammonium nitrate and at least a second compound, said second compound being present under conditions and in amounts effective to substantially reduce the detonation sensitivity of the composition and/or to otherwise improve a desired property of the composition. In certain embodiments, the second compound is selected from the group consisting of ammonium sulfate, ammonium phosphate, calcium nitrate, potassium nitrate, magnesium nitrate, ammonium molybdenate, ammonium hexaflouralsilicate, neodymium hydroxynitrate, and combinations of two or more of these. In preferred embodiments, at least a substantial portion of the ammonium nitrate in the composition is in the form of a double salt with one or more of said second compounds. In highly preferred embodiments, the present compositions consist essentially of one or more double salts of ammonium nitrate and a second compound as described herein.

The invention discloses a compound microbial fertilizer produced from tobacco waste. The compound microbial fertilizer is prepared from the tobacco waste by incculated fermentation, turning and decomposition, mixing with inorganic materials and organic materials, adding of beneficial functional bacteria, blending, metering, inspecting and subpackaging. The compound microbial fertilizer has the advantages that tobacco stems and tobacco powder which are generated during tobacco production and filter residues and filter liquid which are collected after solid-liquid separation is carried out on tobacco extract liquid are treatment objects, the materials are subjected to fermentation, decomposition and fertilizer improvement treatment by the aid of biological bacterium directed fermentation technologies, heavy metal in the tobacco waste is harmlessly treated by added zymocyte, accordingly, the tobacco waste can be comprehensively utilized, series of ecological fertilizers such as the compound microbial fertilizer and organic water-soluble fertilizers can be developed, environments can be protected, and waste resources can be utilized for high values.

The invention relates to a tobacco field soil improving method. The method comprises the following steps: green manure is applied to soil, the green manure is ploughed down 30-45d before next year tobacco seedling transplantation, and biomass charcoal is applied to soil 15-20d after the green manure is ploughed down. The green manure and the biomass charcoal are combined to restore tobacco field soil, so the content of organic matters in soil is improved, the water retention property of the soil is improved, the growth of roots in the earlier growing stage of tobacco plants is promoted, and early and fast growth of the tobacco plants is promoted; and the method also has the advantages of increase of the content of tobacco leaves, increase of the proportion of high-and-middle tobacco leaves, increase of the output value of the tobacco leaves, improvement of the quality of the tobacco leaves, coordination of chemical components, increase of the fragrance and the oil content of the tobacco leaves, improvement of the smoking quality of the tobacco leaves, reduction of the application amount of chemical fertilizers, and improvement of the utilization rate of the fertilizers.

A controlled release agricultural absorbent based product including particles of an absorbent material containing capillaries/voids between 10-200 microns in cross-sectional diameter which is impregnated in an amount of 40-95% of the capillaries/voids volume with an agriculturally beneficial material, at least including ureaform, and said beneficial material being selected from the group consisting of fertilizers, insecticides, herbicides and fungicides, being produced by a process including steps of 1) introducing water to particles of absorbent material to result in absorption of water within the absorbent material, 2) heating the absorbent particles and water to transform the water within the absorbent particles to steam, 3) introducing the absorbent particles to an agriculturally beneficial material, at least including ureaform, to saturate the beneficial material, 4) granulating the beneficial material and saturated absorbent particles to solidify and harden the mixture, resulting in the agglomeration of absorbent particles into granules, and drying the granules.