89 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 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 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.

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 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.

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.

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".

The invention relates to a process for co-producing a seedling culture substrate and corrosive acid by using waste fish or / and shrimp composite cotton straw through hydrothermal carbonization and the seedling culture substrate. The method comprises the following steps: removing fish or / and shrimp waste grease, and stirring to obtain fish or / and shrimp waste slurry; performing wet grinding on the cotton straws to obtain fiber slurry; obtaining the mass ratio of the fish or / and shrimp waste slurry to the fiber slurry and the hydrothermal reaction constant temperature time according to the hull content, the crude protein content and the cotton straw cellulose content; the method comprises the following steps: mixing fish or / and shrimp waste slurry and fiber slurry according to a mass ratio of 100: (20-40), carrying out a hydrothermal reaction, cooling to 60 DEG C, separating a solid phase from a liquid phase, dehydrating the solid phase, drying to obtain a hydrothermal carbonized product, condensing and recovering the liquid phase, carrying out crystal multi-stage membrane separation, and concentrating to obtain humic acid, wherein the mass ratio of the fish or / and shrimp waste slurry to the fiber slurry is 100: (20-40); and mixing the hydrothermal carbonization product, an acidity regulator and a structure modifier, adding a nitrification inhibitor and a slow release agent, and grinding to obtain the seedling culture substrate.

The invention provides a liquid fertilizer for bamboo forest cultivation, and belongs to the technical field of fertilizer preparation. Ammonium polyphosphate is used as a phosphorus source, the problem of fixation of phosphorus in acid soil is solved, and medium trace elements such as calcium, zinc, iron and manganese are chelated, so that the phosphorus is kept in an efficient state in the soil, precipitation is avoided, and real total nutrient supply is realized; meanwhile, by adding the nitrification inhibitor and the urease inhibitor, volatilization and leaching loss of nitrogen are remarkably reduced, the nitrogen fertilizer utilization rate is increased by 30% or above, and the method is suitable for bamboo forests with large nitrogen demand. The synergistic effect of ammonium polyphosphate and xanthan gum in the raw materials ensures that the liquid fertilizer does not crystallize, precipitate and layer after being stored for a long time, has stable properties, and is suitable for long-distance transportation and drip irrigation systems. Sodium silicate is added and contains silicon, so that the mechanical strength and disease and pest resistance of bamboos can be enhanced. Organic active substances can promote bamboo rhizome development and bamboo shoot germination and improve the stress resistance of bamboo forests.

The invention discloses a preparation method of a NiII-containing coordination polymer and research on the inhibition effect of the NiII-containing coordination polymer on soil urease and nitrifying bacteria, and the preparation method comprises the following steps: synthesizing N, N-dimethylformamide by taking pyridine-3-carboxylic acid and 1, 2-ethylenediamine as raw materials; the invention discloses a novel coordination polymer [Ni (1, 4-chdc) (3-dpy) (H2O) 2], which is prepared by the following steps of: synthesizing N, N '-bis (3-pyridinecarboxamide)-1, 2-ethane by using NiCl2. 2H2O, the synthesized N, N'-bis (3-pyridinecarboxamide)-1, 2-ethane and 1, 4-cycloadipic acid through a hydrothermal method, and researching the influence of the novel coordination polymer [Ni (1, 4-chdc) (3-dpy) (H2O) 2] as an inhibitor on soil urease and nitrifying bacteria by analyzing the crystal structure of the novel coordination polymer [Ni (1, 4-chdc) (3-dpy) (H2O) 2]. The research on the compound as an inhibitor reduces the conversion of urea from urea N to ammonium nitrogen and the conversion of ammonium nitrogen to nitrate nitrogen, improves the utilization rate of the fertilizer urea and the stability of the urea, reduces environmental pollution and improves the grain yield. Compared with a traditional inhibitor, the novel NiII coordination polymer serving as a urease and nitrification inhibitor has the advantages of longer half-life period, small toxic and side effects, low preparation cost and more comprehensive functions, the utilization rate of nitrogen fertilizer urea can be greatly increased, the grain yield is increased, and the environmental pollution is reduced.

The invention relates to the technical field of saline-alkali soil improvement and moisture regulation and control, and particularly discloses a method for reducing salt and improving efficiency of soil in Hetao irrigation districts of Inner Mongolia by matching a soil conditioner with an irrigation mode. The invention provides a method for optimizing soil salt reduction and effect improvement in Hetao irrigation district of Inner Mongolia by utilizing cooperation of a soil conditioner and an irrigation mode. According to the method, a first component in the soil conditioner is matched with autumn irrigation; the second component in the soil conditioner is applied together with the irrigation water in cooperation with the base fertilizer or the additional fertilizer; the soil conditioner comprises the following raw material components: furfural fermentation residues, a urease inhibitor, a nitrification inhibitor and polyacrylamide. By means of the technical scheme, the soil structure of saline-alkali soil in Hetao irrigation areas of Inner Mongolia can be effectively improved, the pH value of the soil is reduced, the salt reducing efficiency of the saline-alkali soil is improved, the fertilizer dosage is reduced, the nitrogen-phosphorus fertilizer utilization efficiency of crops is improved, and then the biomass of the overground parts of the crops is improved.

The invention relates to the technical field of crop cultivation, and discloses a dry-wet alternate irrigation and microbial inhibitor coordinated regulation and control method for reducing methane emission in a rice field. The method comprises the following steps: preparing an acidic high-density metastable precursor solution consisting of magnesium sulfate heptahydrate, concentrated sulfuric acid, an iron source, polyaspartic acid and a nitrification inhibitor; through a liquid sublayer flow injection technology, the solution forms density flow at the water bottom, spreads all around, and permeates into deep soil by utilizing gravitational potential energy and a proton competition effect. Along with the rising of the pH value of the soil pore water, the iron source is induced to be subjected to in-situ hydrolysis and cross-linked with the polymeric dispersant, and a gel compound coated with a nitrification inhibitor is constructed in a deep layer. The problems of surface interception and easy leaching loss of effective components in a traditional pesticide application mode are solved, deep targeted delivery and in-situ locking of the active components are realized, methane emission is efficiently inhibited through a deep electron acceptor competition mechanism, and the pesticide composition is safe and harmless to crop growth.

The application discloses a use of carvacrol as a nitrification inhibitor, a use method of carvacrol as the nitrification inhibitor, and a fertilizer manufacturing method and a fertilizer formed by the method. The application finds through indoor simulation, field plot and field tests that the carvacrol has a good inhibiting effect on soil ammonia-oxidizing bacteria when the use amount of the carvacrol is 5.0-15.0 g per mu, can effectively delay the conversion of ammonium nitrogen into nitrate nitrogen, and has an advantage over a traditional nitrification inhibitor in inhibiting a late nitrification stage.

The invention relates to a synergistic fertilizer for high yield and emission reduction of rice and a preparation method thereof, and belongs to the technical field of organic fertilizer and microbial fertilizer manufacturing. According to the invention, the microcapsule is prepared for coating the nitrogen fertilizer, and the adhesion type nitrification inhibitor capable of being adhered to the wall material structure of the microcapsule is prepared, and the nitrification inhibitor can be adhered to the wall material of the microcapsule by utilizing the boric acid structure of the nitrification inhibitor, so that the leaching loss in soil is effectively reduced; and after the microcapsule wall material is consumed by microorganisms in the soil, the microcapsule wall material can be dissolved out again and restore the nitrification effect in the soil, so that the nitrous oxide content of the rice is effectively reduced, and the nitrogen fertilizer utilization rate and the rice yield in the rice are improved.