129 results about "Nitrification 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 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.

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 relates to a soil conditioner based on nitrification inhibition and a soil acid control method, and belongs to the technical field of soil conditioning, the soil conditioner comprises the following components by weight: 20-22 parts of humic acid, 32-36 parts of syringic acid-linoleic acid modified porous hydroxyapatite, 4-5 parts of complete nitrifying bacteria, 2-5 parts of syringic acid, and 2.8-4.2 parts of sodium carboxymethyl cellulose. According to the technical scheme, syringic acid and linoleic acid serve as nitrification inhibitors, the nitrification inhibition rate can be effectively increased, ecological niches of ammonia-oxidizing archaea and ammonia-oxidizing bacteria can be reduced through competitive occupation due to addition of complete nitrifying bacteria, the nitrification rate of the ammonia-oxidizing archaea and the ammonia-oxidizing bacteria is inhibited, and N2O emission is reduced. Humic acid and hydroxyapatite can be used as pH buffer substances to regulate and control soil acidity, aluminum toxicity can be relieved, and physical and chemical properties of soil can be improved; meanwhile, the complete nitrifying bacteria can be ensured to have relatively high activity under the condition that the pH is 5.5-6.5.

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.

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 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 invention provides an application of a nitrification inhibitor and biochar as a soil conditioner in enhancing drought resistance of plants, a preparation method of the biochar is as follows: moso bamboo stalks are taken as raw materials, pyrolysis is performed for 4-8 hours under an anoxic state of 250-400 DEG C, soil is red soil, and the plant is polygonatum cyrtonema, and an application method comprises the following steps: adding a nitrogen fertilizer into the soil, the addition amount of the nitrification inhibitor is 1% of the content of nitrogen added to the soil, and the addition amount of the biochar is 3% of the mass of the soil. Through combined application of the biochar and the dicyandiamide, the drought resistance of the polygonatum cyrtonema and the benefits of soil microbial communities are remarkably improved.

Fertilizers with urease inhibitors and / or nitrification inhibitors are described. The fertilizer can include an extruded granule containing urea, a polymeric binder, and a nitrification inhibitor and / or an urease inhibitor.

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 present invention relates generally to nitrification inhibitors and their use to prevent nitrate leaching or nitrous oxide emissions and to increase forage or crop yield. The present invention also relates to nitrification inhibitors and formulations comprising the same for direct or indirect application to soil or pasture.

The invention provides an organic-inorganic multifunctional compound fertilizer applicable to tea trees. The organic-inorganic multifunctional compound fertilizer applicable to the tea trees is prepared from the following raw materials in parts by mass: 30 parts of tea tree pruning branch organic fertilizer, 25 to 35 parts of urea, 15 to 20 parts of monopotassium phosphate, 10 to 15 parts of potassium sulfate, 1 part of nitrogen nitrification inhibitor dicyandiamide and 0.5 part of hydroquinone. The organic-inorganic multifunctional compound fertilizer applicable to the tea trees, provided by the invention, has the advantages that the organic-inorganic multifunctional compound fertilizer can be developed on the basis of nutrient requirements and quality formation rules of the tea trees, scientific and effective utilization of pruned tea trees and a nutrient coupling effect of biochar are realized, slow release of fertilizer nutrients is realized, and the yield of the tea trees is increased. Therefore, the nutrient utilization efficiency is improved, the growth of the tea trees is promoted, and the quality is improved.

This invention provides a method for increasing wheat yield without topdressing, using a compound fertilizer in granular form, comprising, from the inside out: an inner core containing fast-acting nitrogen fertilizer, a urease inhibitor, and a nitrification inhibitor; a middle layer containing slow-release nitrogen fertilizer and enzyme activating substances; and an outer layer containing controlled-release nitrogen fertilizer and sugar-enhancing substances. The inner, middle, and outer layers form a functional spatiotemporal coupling structure, matching nitrogen release with the nitrogen requirements of wheat during its growth period, with an effective fertilizer period of 110-120 days. In the inner core, the urease inhibitor is selected from NBPT (n-butylthiophosphoric triamine) or its derivatives, and the nitrification inhibitor is selected from DMPP (3,4-dimethylpyrazole phosphate) or DCD (dicyandiamide). This invention's compound fertilizer provides effective nitrogen supply for 110-120 days, covering the entire wheat growth period, achieving a single basal application and eliminating the need for topdressing throughout the entire growth period, reducing fertilization operations by 2-3 times and significantly lowering labor costs.

This invention relates to the field of soil treatment technology, specifically a method and its application for reducing compound fungicides in soil-plant systems by combining nano-silica and nitrification inhibitors. Nitrification inhibitors are used as a nitrogen management measure, and the application of nanomaterials influences soil abiotic properties and bacterial communities to drive the degradation of paclobutrazol and carbendazim. The application of nitrification inhibitors (DCD) produces multiple effects: significantly reducing carbendazim residues in soil-plant systems, paclobutrazol residues in soil, and NO3 in plants. ‑ -N and promote the content of soluble sugars and proline in plants. DCD reduces the activity of the soil electron transport system and β-glucosidase activity, while the addition of nano-SiO2 can mitigate this negative effect. Nano-SiO2 selectively enhances the performance of DCD in reducing compound fungicide residues in pak choi and reducing paclobutrazol residues, but hinders the degradation of carbendazim in pak choi.

The present invention provides a novel fertilizer synergist and its preparation method and application. The novel fertilizer synergist comprises the following raw materials in parts by weight: 15-30 parts of a nitrification inhibitor, 10-25 parts of polyaspartate, 30-50 parts of polyepoxysuccinate, and 1-10 parts of trace elements. The fertilizer synergist of the present invention can effectively improve the utilization efficiency of nitrogen and phosphorus nutrients in fertilizers. The synergistic effect of DMPP, polyaspartate, and polyepoxysuccinate in the present invention can reduce nitrogen loss and phosphorus fixation, and can simultaneously improve the utilization efficiency of nitrogen and phosphorus in fertilizers, thereby reducing fertilizer losses. The delayed release characteristics of synergistic nitrogen and phosphorus in the fertilizer formula of the present invention further promote the absorption of quick-acting nitrogen and phosphorus in the soil by plants, improve the utilization efficiency of nitrogen and phosphorus, and promote the rapid growth of crops.

The present invention relates to the use of novel nitrification inhibitors of formula I, which are N-functionalized alkoxy pyrazole compounds. Moreover, the invention relates to the use of compounds of formula I as nitrification inhibitors, i.e. for reducing nitrification, as well as agrochemical mixtures and compositions comprising the nitrification inhibitors of formula I.

The present invention relates to the use of compounds of formula (I), which are strigolactone derivatives and analogues, as nitrification inhibiting compounds, i.e. for reducing nitrification, in nitrifying microorganisms, as well as agrochemical mixtures and compositions comprising a nitrification inhibiting compound of formula (I).

Disclosed is a dual functional urease and nitrification inhibitor composition and method for inhibiting the hydrolysis of urea and nitrification of ammonia in soil. Methods of making the dual functional urease and nitrification inhibitor and / or a composition containing the dual functional urease and nitrification inhibitor are also disclosed.

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.

A fertilizer composition including a) one or more solid nitrogen sources, and b) a liquid fertilizer additive composition.

The invention discloses a forage grass production special fertilizer for marginal land and a preparation method thereof. The special fertilizer is prepared from melatonin, a nitrification inhibitor, humic acid, a seaweed extract, a porous mineral carrier, a nitrogen-phosphorus-potassium source, trace elements, a binder and the like according to a specific ratio through a staged coating process. The preparation method comprises the following steps: firstly preparing the functionalized core particles, then sequentially loading the stress-resistant functional layer, constructing the full-nutrition layer and selectively wrapping the controlled-release layer. According to the invention, plant stress resistance induction, nitrification inhibition, organic activation and nutrient slow release technologies are organically combined, and the problems of low utilization rate of conventional fertilizers on marginal land, aggravated soil degradation, limited stress resistance improvement, serious nitrogen loss and the like are solved. The special fertilizer is suitable for forage grass crop planting in marginal land such as saline-alkali land and desertification land, and can synergistically realize multiple goals of high yield and high quality of forage grass, soil improvement and fertility improvement and environmental pollution prevention and control.

The invention discloses an oil tea fruit shell compost preparation method, which comprises: crushing oil tea fruit shells, screening, uniformly mixing and stirring the screened oil tea fruit shells, an EM bacterial agent, urea, and a nitrification inhibitor, adding water to adjust the water content to 55-60%, fermenting in a heat-insulation ventilation composting device, and carrying out composting to obtain the oil tea fruit shell compost. The camellia oleifera shell compost is obtained. The camellia oleifera shells are simple in formula and low in cost, the physicochemical properties of the camellia oleifera shells as camellia oleifera processing residues are fully utilized, greenhouse gas generated by camellia oleifera shell compost is reduced, and meanwhile high-value utilization of the camellia oleifera processing residues is achieved.

The present invention relates to mixtures comprising a solid support comprising a urease inhibitor and another solid support comprising a nitrification inhibitor, such as 3,4-dimethylpyrazole phosphate (DMPP) or 2-(3,4-dimethyl-1H-pyrazol-1-yl)succinic acid (DMPSA), to a method for enhancing the nitrification inhibitory effect or for increasing the health of a plant using mixtures of at least one compound I and at least one compound II; to the use of mixtures comprising compounds I and II for increasing the health of a plant.

The present invention relates to the use of silylethynyl hetaryl compound as nitrification Inhibitors.

The invention relates to the technical field of compound fertilizers, and discloses a nitrogen-phosphorus-potassium balanced compound fertilizer containing an alginic acid chelating carrier, which comprises the following raw materials by weight: urea, monocalcium phosphate, potassium sulfate compounded potassium chloride, alginic acid, medium trace elements, a slow release regulator, a bioactive substance, diatomite, gamma-polyglutamic acid and a coating material. According to the nitrogen-phosphorus-potassium balanced compound fertilizer containing the alginic acid chelating carrier and the preparation method of the nitrogen-phosphorus-potassium balanced compound fertilizer, the alginic acid microporous gel carrier prepared by gamma-ray irradiation degradation and electrostatic spinning technologies has an ultra-large specific surface area and a nanoscale microporous structure, and can efficiently adsorb basic nutrients such as nitrogen, phosphorus and potassium and medium trace elements to form a stable chelating system; by combining a slow-release regulator composed of carboxymethyl chitosan and humic acid and a multilayer coating design of a urease inhibitor, a nitrification inhibitor, PLA microcapsules and fatty acid calcium, nutrient loss is reduced, and the utilization rate of the fertilizer is remarkably increased.

This invention discloses a method for the simultaneous detection of six urease / nitrification inhibitors in fertilizers, resistant to matrix interference. The method is used to simultaneously determine six inhibitors in fertilizers, including thiourea, dicyandiamide, n-butylthiophosphoric triamine, n-propylthiophosphoric triamine, 3,4-dimethylpyrazole phosphate, and 2-chloro-6-trichloromethylpyridine. The procedure includes weighing the fertilizer sample and obtaining a sample extract. A specific chromatographic column and mobile phase are selected, and separation is performed according to a gradient elution program designed for the polarity span of the six inhibitors. An ultraviolet detector or a diode array detector is used, with the detection wavelength automatically switched over time during a single analytical run. Finally, the external standard method is used to calculate the content of each of the six inhibitors in the fertilizer sample based on a standard curve. This invention achieves high-throughput detection with "one injection, six results".

Use of an N-heterocyclic compound of general formula (a) or (b) as a nitrification inhibitor, in general formula (a) or (b): X1 is S or O, X2 is S or O, and at least one of X1 and X2 is S; r2 is H or C1-4 alkyl; r3 is H or a C1-4 alkyl group; r6 and R7 are hydrogen or together form a covalent carbon-carbon bond; in the general formula (a), R1 is H, C1-12 alkyl or-CH2-NR4R5, and R4 is hydrogen or C1-4 alkyl; r5 is a C1-12 hydrocarbon residue which may comprise 1-3 halogen atoms and / or 1-4 heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur, R4 and R5 may also form together with the nitrogen atom linking them a 5-or 6-membered saturated or unsaturated heterocyclic group which may optionally further contain one or two further heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur; in general formula (b), R1 is H or a C1-17 hydrocarbon, preferably H, or-CH2-R5, where R5 is H or a C1-16 hydrocarbon residue, the hydrocarbon may contain 1-3 halogen atoms and / or 1-6 heteroatoms, selected from nitrogen, oxygen and sulfur; preferably, X1 and X2 in the general formulae (a) and (b) are S. # imgabs0 #