118 results about "Reduced nitrogen" patented technology

This invention belongs to the field of biomass subcritical fertilizer production, specifically relating to a mobile photovoltaic-powered subcritical fertilizer production system and its product application aimed at reducing nitrogen and phosphorus emissions, increasing efficiency, and resource-based disposal of high-moisture waste. It includes a solar preheating system, a photovoltaic power supply system, an auxiliary heating system, a hydrothermal reaction system, and a post-treatment system. The photovoltaic power supply system and auxiliary heating system are connected to the electrical load of the hydrothermal reaction system; the hydrothermal reaction system is connected to both the solar preheating system and the post-treatment system. This invention utilizes electrodialysis technology to desalinate the hydrothermal charcoal before returning it to the field. Through electrodialysis, the desalination rate of the charcoal reaches 45%-90%, and the conductivity of the desalinated charcoal is 1.40-6.75 mS / cm. The desalinated charcoal significantly increases crop yield; chlorophyll content increases by 25.5-67.5%, fresh weight increases by 18.5%-175%, and lettuce root length increases by 37.0%-98.2%. The high degree of desalination avoids the negative effects of salt stress on lettuce roots.

The application discloses a kind of ammonia-free denitration agent for biomass boiler and its preparation method, and preparation raw materials include, by mass percentage: oxidizing agent 13-18%, solubilizer 0.5-2%, dispersing agent 0.5-1%, absorbent 15-19%, activated carbon slurry 8-15%, and the balance is water.5, the incorporation of denitration agent can effectively reduce the monitored values of nitrogen oxides at the inlet and outlet of flue gas, whether mother liquor or diluted product has the effect of reducing nitrogen oxides, the use method is simple, low in cost, convenient to use, has greater economic value and broad application prospect.

The application discloses a kind of organic waste composting methods for reducing nitrogen loss, belong to the technical field of organic waste resource utilization, in different stages of organic waste fermentation, calcium peroxide is added, on the one hand, can maintain the oxygen environment of heap system, inhibit denitrification;On the other hand, by regulating the pH environment in system, reduce ammonia volatilization.This double synergistic effect, continue to increase efficiency in the whole composting fermentation process, oxygen regulation breaks down the gaseous nitrogen loss caused by denitrification from the root, pH regulation effectively inhibits free ammonia volatilization, the two effects cooperate with each other, throughout the whole process, can realize the efficient nitrogen conservation of organic waste raw materials from fermentation start to stable decomposition, effectively solve the problems that existing nitrogen conservation technology is not good, cost is high, easy to cause secondary pollution and affect composting maturity etc..

The present application relates to the field of crop cultivation and soil improvement technology, and discloses a wheat-corn-sunflower-legume green manure crop rotation carbon fixation and water saving method suitable for arid irrigation areas, which comprises wheat planting, corn planting, sunflower planting and legume green manure planting. The present application replaces traditional flooding irrigation with high-frequency low-amount drip irrigation mode, combines with precise water supply according to the water requirement characteristics of each crop growth period, and avoids invalid irrigation. Meanwhile, through straw returning to field, soil water evaporation is reduced, and soil conservation capacity is improved. Moreover, the present application constructs a double carbon fixation path of straw returning to field and green manure turning, straw is crushed and returned to field, organic carbon is input into soil every year, legume green manure is turned and decomposed, and soil organic matter content is improved. The present application also reduces nitrogen fertilizer application through symbiotic nitrogen fixation of legume green manure and rhizobium, protects soil microbial activity, optimizes soil carbon cycle, relieves soil degradation, and improves long-term carbon fixation potential of soil.

This invention provides a gas-phase molecular absorption spectrometry-naphthylethylenediamine hydrochloride spectrophotometric method for determining total nitrogen in waste gas from stationary pollution sources. The method comprises the following steps: S1. Reacting the waste gas with an oxidant; S2. Using an absorbent, further reacting the waste gas after S1; S3. Collecting the oxidant after S1, pretreating it to reduce nitrogen-containing compounds to nitric oxide, and detecting the total nitrogen content I; S4. Collecting the absorbent after S2 to obtain the total nitrogen content II; S5. Summing the total nitrogen content I and total nitrogen content II to obtain the total nitrogen content in the current waste gas. This method enables accurate determination of total nitrogen in waste gas from stationary pollution sources.

The invention discloses Pseudomonas tai H1R1 and application thereof in treatment of mariculture tail water, the Pseudomonas tai H1R1 has excellent high salt resistance and aerobic denitrification function, can directly convert ammonia nitrogen and nitrate into nitrogen and efficiently remove nitrogen, the nitrogen removal rate can reach 80% or above, nitrogen load in water is reduced, the nitrogen removal efficiency is improved, and the application of the Pseudomonas tai H1R1 in treatment of mariculture tail water is improved. The problem of water eutrophication caused by nitrogen can be prevented; the system can survive and breed under various severe environment conditions and treat mariculture tail water. The pseudomonas tai H1R1 disclosed by the invention can utilize organic matters in mariculture tail water as a carbon source, so that the growth speed and the growth amount of bacteria are increased, and organic wastes in a culture process are reduced, so that the strain H1R1 can promote self growth while treating the mariculture tail water; and double benefits of environmental governance and resource cyclic utilization are realized.

This invention belongs to the field of microbial technology, specifically relating to a compound microbial fertilizer that synergistically regulates rhizosphere flora and nitrogen metabolism genes and its application. The microbial agent includes: Bacillus belye (… Bacillus velezensis ), Bacillus subtilis subsp. subtilis ( Bacillus subtilis subsp. subtilis ) and Linyi Streptomyces ( Streptomyces linyiensis Two or three of the following. The microbial agent provided by this invention has significant growth-promoting and nitrogen-fixing effects when applied to crops. It can maintain or even improve soil fertility and crop yield under the condition of reducing nitrogen fertilizer application by 30%, providing a green and efficient new solution for the implementation of "nitrogen reduction and efficiency enhancement".

The application discloses a kind of weathered marble waste stone powder resource utilization composition and application thereof, belong to environmental protection technical field.The weathered marble waste stone powder resource utilization composition includes marble waste stone powder, soil and microalgae biological fertilizer SynMiCom.The application mixes soil in marble waste stone powder and then adds SynMiCom, which can significantly reduce the pH of marble waste stone powder, significantly increase the content of reduced nitrogen in marble waste stone powder, significantly increase the content of available phosphorus in marble waste stone powder, significantly increase the enzyme activity in marble waste stone powder, and significantly promote the growth of peppers in marble waste stone powder.The application utilizes the long-term weathered marble waste stone powder, which has low cost and high application value.

The invention belongs to the technical field of microorganisms, and particularly relates to a composite microbial fertilizer capable of cooperatively regulating rhizosphere flora and nitrogen metabolism genes and application of the composite microbial fertilizer, and the microbial agent comprises two or three of bacillus velezensis, bacillus subtilis subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. Subsp. When the microbial agent provided by the invention is applied to crops, the microbial agent has remarkable growth promotion and nitrogen fixation synergistic effects, can maintain and even improve soil fertility and crop yield under the condition of reducing application of a nitrogen fertilizer by 30%, and provides a green and efficient new solution for implementation of nitrogen reduction and synergistic effects.

The application discloses a preparation method of organic garbage carbon source by composite enzyme combined with nitrogen precipitation. Firstly, enzyme pretreatment is performed on organic garbage materials, starch enzyme, cellulase and hemicellulase are used in cooperation to make macromolecular structure of organic matter be broken, so that preliminary release and partial dissolution of carbon source substances are realized; subsequently, sodium tetraphenylborate is added in the pretreatment system to selectively precipitate nitrogen substances in the solution, and centrifugal separation is performed to reduce nitrogen content of the system; on the basis, potassium persulfate and iron substances are added into the obtained suspension liquid to build a Fenton-like reaction system, residual organic macromolecules are further oxidized and degraded, and the structure is optimized, so that availability and stability of the carbon source are improved. In the whole process, each link cooperates, so that the organic garbage can be efficiently converted into high-quality carbon source with high C / N ratio and COD value, and can be used in a sewage treatment system as stable external carbon source.

This invention discloses a slow-release fertilizer suitable for lateritic soils in Hainan, comprising a fertilizer core and a coating layer; the fertilizer core comprises the following raw materials in parts by weight: 10-20 parts isobutylene diurea, 1-3 parts 3,4-dimethyl-1H-pyrazole dihydrogen phosphate, 1-3 parts dicyandiamide DCD, 20-30 parts humic acid, and 30-50 parts organic fertilizer; the coating layer comprises the following raw materials in parts by weight: 5-10 parts natural nanotube halloysite, 3-5 parts bentonite, 5-10 parts cyclodextrin, 1-3 parts polyglutamic acid, 1-3 parts wood vinegar, and 5-10 parts polyacrylamide. The isobutylene diurea, humic acid, and organic fertilizer of this invention can effectively replenish organic matter and nitrogen in iron-aluminate soil, maintain soil nitrogen levels, and effectively control the conversion of ammonium nitrogen to nitrate nitrogen in lateritic soil, thereby reducing nitrogen loss and achieving a stable supply of nitrogen. In addition, polyglutamic acid and polyacrylamide have strong water retention capacity, and the fertilizer core is coated with a coating layer to achieve slow release and water retention.

The invention discloses trichosporon arystachys capable of reducing ammonia nitrogen and nitrite and application of the trichosporon arystachys. The saccharomycetes are named as Trichosporonashii JM-1, and the preservation number of the saccharomycetes is GDMCC No: 64448. The invention further discloses a preparation method of the saccharomycetes. The Saccharomyces cerevisiae grows well in a high-concentration ammonia nitrogen and nitrite environment, is high in nitrogen degradation efficiency and good in environmental adaptability, can be used as a functional strain for improving water quality, deodorizing farms, deodorizing garbage yards and the like, is applied to multiple places, reduces nitrogen accumulation, protects the environment, has certain degradation capability on cellulose, and can be used as a functional strain for improving the water quality, deodorizing the farms, deodorizing the garbage yards and the like. The method has great application potential in livestock and poultry aquaculture and environmental protection.

The utility model discloses an energy-saving and consumption-reducing nitrogen production system which comprises an air filter, an air compressor, an air cooling tower, a first molecular sieve, a second molecular sieve, an electric furnace, a fractionating tower and a heat exchanger, the air filter is connected with the air compressor, and the output end of the air compressor is connected with the high-temperature gas input end of the heat exchanger; the low-temperature gas input end of the heat exchanger is connected with the fractionating tower, the high-temperature gas output end of the heat exchanger is connected with the air cooling tower, the low-temperature gas output end of the heat exchanger is connected with the electric furnace, the first molecular sieve is connected with the second molecular sieve, and the air cooling tower is connected with the first molecular sieve and the second molecular sieve through pipelines. The fractionating tower is connected with the first molecular sieve and the second molecular sieve through pipelines, and the second molecular sieve is connected with the electric furnace. According to the utility model, the electric quantity consumption of the electric furnace is reduced, the electric quantity consumption of the air cooling tower is reduced, the service life of the binding post is prolonged, and unnecessary consumption is avoided.

The application discloses a sewage purification device based on an AOA process and particularly relates to the technical field of sewage purification, comprising a treatment tank arranged on the ground and used for treating sewage, two auxiliary components arranged on the upper part of the inner surface of the treatment tank, a stirring component one arranged below the auxiliary component on the rear side, a mixing component arranged on the middle part of the inner surface of the treatment tank, and a stirring component two arranged on the front side of the inner surface of the treatment tank. The application forms a nearly sealed anaerobic reaction space through cooperation of the intercepting plate one and the intercepting plate two, realizes a low-oxygen environment required by anaerobic reaction, avoids penetration of external oxygen to destroy anaerobic conditions, realizes continuous air suction and gas collection of the anaerobic zone and the anoxic zone through cooperation of the sliding plate, the vertical plate and the air bag, reduces the oxygen content above the anaerobic zone to guarantee reaction conditions, recycles methane generated by the anaerobic reaction, reduces nitrogen residue in the anoxic zone, and solves the problems of methane leakage pollution and sludge floating caused by nitrogen adhesion to sludge.

The utility model discloses a farmland discharge outlet capable of reducing nitrogen and phosphorus non-point source pollutant discharge, which comprises a percolation dam arranged at the position of a farmland ridge discharge outlet and an adjustable waterproof assembly, the percolation dam is filled with a permeable purification material, and the adjustable waterproof assembly is arranged on one side, facing the farmland, of the percolation dam; the adjustable waterproof assembly can adjust the water level height of the farmland so as to meet the water demand requirements of aquatic or humid crops in different growth periods. The device has the functions of water retention in a dry season, farmland runoff purification in a rainwater period or a drainage period and flood regulation and storage, and the height of the farmland water level can be adjusted through the adjustable waterproof assembly according to the water demand requirements of aquatic or hygrophilous crops in different growth periods. The percolation dam body can purify runoff generated by conventional rainfall or runoff at the front end of rainstorm or runoff generated during drainage to a certain degree by filling permeable purification materials, the paddy field can serve as a temporary storage pond in the rainstorm period to slow down the runoff water drainage rate, the downstream flood intensity is relieved, and the effect of flood storage is achieved.

The invention relates to the technical field of agricultural resources and environment, in particular to a fertilization method for reducing nitrogen loss of an apple orchard. The apple branch biochar is prepared from the apple orchard pruning waste, and resource utilization of the waste is achieved. Through the synergistic effect of the apple branch charcoal, dicyandiamide and the reduced nitrogen fertilizer, the loss of nitrate nitrogen in soil is obviously slowed down, the conversion of ammonium nitrogen is inhibited, and a nitrogen cycle functional microflora is regulated, so that the application amount of the nitrogen fertilizer is reduced, the utilization rate of the nitrogen fertilizer is improved, and the environmental pollution is reduced; the growth of apple plants can be obviously promoted, the root configuration is improved, and the root activity and the nitrate reductase activity are improved.

The invention discloses a nitrogen and phosphorus adsorbent and a preparation method and application thereof, and belongs to the technical field of environmental protection and resource utilization. The preparation method comprises the following steps: uniformly mixing coal gangue powder with NaOH, calcining, adding water, carrying out hydrothermal reaction with NaAlO2, washing, centrifuging, and drying to obtain CGMS; the preparation method comprises the following steps: preparing a sodium alginate solution, adding CGMS into water to obtain a CGMS solution, adding a sodium alginate solution into the CGMS solution, then adding a NiCl2 solution, and finally adding a glutaraldehyde solution to obtain a mixed solution, stirring, centrifuging, washing and drying to obtain SA-CGMS; and finally, mixing the sludge with SA-CGMS, drying, carrying out ball milling on the dried material, screening, granulating into balls, drying, and finally calcining to obtain the nitrogen and phosphorus adsorbent. The nitrogen and phosphorus adsorbent prepared by the invention has the nitrogen and phosphorus resistance and control of 90% or more, and can significantly reduce the leaching loss of nitrogen and phosphorus. And after being continuously used for 6-8 years, the nitrogen-phosphorus adsorbent is applied to the permeable control layer, so that the soil fertility of the barren farmland in the karst region can be increased, carbon sequestration can be realized, and heavy metals and antibiotic pollutants in a plough layer can be adsorbed.

The application discloses a method for wastewater denitrification by ion beam superposition biological method, comprising the following steps: (1) air ionization is used to generate charged air particles, and the charged air particles are dissolved into industrial wastewater after being treated by a magnetic field to obtain solution A; the air ionization and the magnetic field treatment are performed by an anion beam device; the magnetic field treatment is a combined frequency magnetic field treatment; (2) the solution A obtained in the step (1) is placed into a wastewater denitrification biochemical tank to perform microbial treatment; the microbial treatment comprises microbial nitrification treatment and denitrification treatment. The method for wastewater denitrification by ion beam superposition biological method can selectively strengthen the action of microbial population and rapidly activate microorganisms by providing charged air particles and biological electromagnetic waves in wastewater; meanwhile, the method can provide the required electrons for reduction of nitrite nitrogen to nitrogen, realize the functions of simultaneous nitrification and denitrification in the case of lacking carbon source, improve the ammonia nitrogen removal efficiency and total nitrogen removal efficiency of low C / N ratio wastewater, and significantly reduce the operation cost.

This invention provides a method for preparing high-nitrogen-content vanadium-containing steelmaking additive silicon vanadium ferronitride, comprising the following steps: 1) mixing vanadium oxide and a carbon source at a C / O molar ratio of 0.8-1, briquetting the mixture, and then placing it in a nitrogen atmosphere for a reduction nitriding reaction at 1100-1400 °C to obtain a one-step product; 2) crushing the one-step product obtained in step 1), mixing it with a silicon source and an iron source, briquetting the mixture, and then placing it in a nitrogen atmosphere for densification treatment at 1300-1500 °C to obtain high-nitrogen-content silicon vanadium ferronitride, wherein the silicon source is ferrosilicon and / or silicon. This invention can obtain high-purity, uniformly composed, and highly dense silicon vanadium ferronitride, improving the automation level and continuous production capability of the production process.

The application discloses a method for reducing nitrogen and phosphorus loss of slope farmland, which comprises the following steps: step 1, determining a slope farmland catchment area and estimating nitrogen and phosphorus loss load of a SWAT model; step 2, designing a drainage ditch, a rain and sewage diversion device and a diversion pipe according to the estimation result of the model; and step 3, designing a vegetation retention pool according to the runoff of the slope farmland; the vegetation retention pool effectively reduces the loss of nitrogen and phosphorus of the slope farmland through the absorption of plants, the filtration of sediments and the retention effect of water flow. The method can realize diversion treatment of small rain and high-concentration nitrogen and phosphorus runoff in the early stage of heavy rain, and the nitrogen reduction rate of the slope farmland drainage reaches 70-80%, and the phosphorus reduction rate reaches 80-90%.

This utility model relates to the field of polymer material processing technology, specifically a negative pressure suction nitrogen protection device. The device includes a liquid raw material storage tank, an intermediate metering mixing tank, an extruder and an extruder hopper, and is equipped with a two-stage series nitrogen-driven vacuum generation unit, a nitrogen circulation heating and pressurization circuit, and a vacuum storage and purification circuit. Nitrogen is utilized in stages through the two-stage vacuum generator, reducing nitrogen consumption; heat from high-temperature waste gas is recovered using a heat storage heat exchanger to preheat and pressurize the nitrogen, achieving energy saving and consumption reduction. The device can control the oxygen content in the tank at an extremely low level, avoiding material oxidation and degradation and moisture contamination, while also reducing the impact of temperature fluctuations on the material. This device has a high degree of structural integration and low operating cost, and is suitable for the safe transportation and protection of liquid raw materials such as thermoplastic polyurethane that are sensitive to moisture and oxygen.

The utility model provides a vulcanizing machine nitrogen recovery system which comprises a nitrogen storage tank for storing nitrogen; the main pipeline is communicated with an outlet of the nitrogen storage tank; and the diverging pipe is positioned between the outlet of the nitrogen storage tank and the main pipeline, and the nitrogen flow rate of the main pipeline is reduced and the pressure of the main pipeline is ensured to meet an expected target by diverging the cross sectional area of the pipeline. By arranging the diverging pipe between the outlet of the nitrogen storage tank and the inlet of the main pipeline, the flow rate of nitrogen can be remarkably reduced, erosive wear to the main pipeline is reduced, the reliability of the system is improved, the service life of the system is prolonged, and meanwhile, the pressure of the main pipeline can be kept within a reasonable range.

This application discloses an aftertreatment system, method, and vehicle that can achieve lower emissions while maintaining a substantially unchanged aftertreatment installation space. The aftertreatment system includes: a first nitrogen oxide (NOx) treatment device for reducing NOx and oxidizing and removing it with ammonia; a particulate matter treatment device for capturing particulate matter and catalytically generating nitrogen dioxide; a second NOx treatment device for reducing NOx and oxidizing and removing it with ammonia; a urea nozzle for injecting urea; a temperature sensor for detecting temperature; and a NOx sensor for detecting NOx concentration.

The invention relates to the technical field of fertilizers, in particular to a hydrothermal carbon-sodium alginate slow-release fertilizer based on a subcritical conversion technology and a preparation method of the hydrothermal carbon-sodium alginate slow-release fertilizer. Sludge-based hydrothermal carbon is added into a urea-sodium alginate mixed solution, a three-dimensional gel network is formed through crosslinking of sodium alginate and calcium ions, a urea component is embedded into the network in the gelation process, and the slow-release fertilizer with nitrogen adsorption-desorption behavior dual regulation and control is obtained. Hydrocarbon is introduced into a sodium alginate gel system, the structural characteristics of gel can be improved by utilizing the pore structure, the adsorption capacity and the mechanical strength of the sodium alginate gel system, and the adsorption and retention of nitrogen are enhanced, so that the release process is further regulated and controlled, the nitrogen loss is reduced, and the overall slow release effect and the crop nutrient utilization efficiency are improved.

The utility model discloses a cabinet type membrane separation nitrogen-making device, which relates to the technical field of nitrogen injection, oxygen control and fire prevention and comprises a frame body, a filter component and a separation membrane component, the filtering assembly is arranged on the frame body and used for filtering compressed air, the filtering assembly comprises a steam-water separator and an activated carbon filtering pipe, the steam-water separator is connected with a compressed air inlet through a pipeline, the compressed air inlet is used for introducing compressed air, and the steam-water separator is connected with the activated carbon filtering pipe through a pipeline; the separation membrane assembly is used for separating nitrogen in the compressed air and comprises a tube shell and a separation membrane, the tube shell is fixedly arranged at the bottom of the frame body, the separation membrane is arranged in the tube shell, the tube shell is communicated with the activated carbon filter tube, and the tube shell is connected with a nitrogen outlet for discharging nitrogen through a pipeline. The cabinet type membrane separation nitrogen-making device is small in size, high in integration level and convenient to construct, can be directly placed in a protection area, does not need to build an equipment room, and reduces laying of a nitrogen injection pipeline and a spray head, so that the system manufacturing cost is reduced.

This invention discloses a nitrogen replacement process for a vulcanizing tank, including a nitrogen generator. Nitrogen gas produced by the nitrogen generator is pressurized by a first nitrogen compressor. The nitrogen gas then flows through a gas pipeline into a first nitrogen foaming kettle and a second nitrogen foaming kettle for a foaming process. A portion of the gas in the second nitrogen foaming kettle enters the first vulcanizing tank. A first pressure gauge and a first regulating valve are installed on the nitrogen input pipe into the first vulcanizing tank. Compared to existing technologies, this process utilizes a portion of the nitrogen from the foaming process to replace toxic gases in the vulcanizing tank, eliminating the need for an additional nitrogen production and input equipment, thus saving significant production equipment costs. Furthermore, the nitrogen gas after foaming is recycled, making it more energy-efficient and environmentally friendly than producing new nitrogen gas. The nitrogen gas can be reused multiple times, reducing nitrogen generation costs.

This invention discloses an effective method for reducing nitrogen content in the production of sustainable aviation fuel feedstock, belonging to the field of sustainable aviation fuel production technology. Through a tiered processing approach, high-nitrogen feedstock is first pretreated with microwave-assisted plasma to efficiently break the C-N bonds of macromolecular nitrogen heterocycles. Then, pre-denitrification is performed using an AI-intelligent optimized adsorption bed filled with amino-functionalized modified MOF adsorbent. Subsequently, in a multi-field coupled microchannel reactor, mild hydrogenation is carried out for deep denitrification under the synergistic effects of ultrasound, electric field, and near-infrared photothermal treatment. Finally, the fraction is separated and purified using a membrane separation-distillation coupled system to obtain aviation kerosene fraction with a nitrogen content of less than 1 ppm, achieving a total yield of up to 92%. This invention also converts the desorbed and enriched nitrogen resources into high-purity acetonitrile through electrochemical synthesis. This method overcomes the limitations of traditional high-temperature, high-pressure hydrogenation refining, achieving ultra-deep denitrification under mild conditions, significantly reducing energy consumption and catalyst coking rate, while simultaneously realizing high-value conversion of nitrogen resources.

The invention discloses application of a ZmNIGT1.1 gene in regulating and controlling nitrogen utilization efficiency and total biomass of corn, and belongs to the technical field of gene engineering. According to the invention, a ZmNIGT1.1 gene related to nitrogen utilization efficiency is identified in corn, and the nucleotide sequence of the ZmNIGT1.1 gene is as shown in SEQ ID NO. 2. Field planting experiments are carried out on an overexpression material and a mutant material of the ZmNIGT1.1 gene respectively, and experimental results show that compared with a contrast, the total biomass and the nitrogen utilization efficiency of the overexpression material are remarkably reduced, and the total biomass and the nitrogen utilization efficiency of the mutant material are remarkably improved. It is clear that the ZmNIGT1.1 gene can be used for cultivating low-nitrogen-stress-resistant, high-biomass and high-protein corn for the first time, nitrogen fertilizer input can be reduced, environmental pollution can be reduced, and the ZmNIGT1.1 gene has important economic value and ecological benefits and has important significance in promoting green agriculture development.

The application discloses a Bradyrhizobium sp. and application thereof, and belongs to the technical field of nitrogen-fixing symbiotic microorganisms. The Bradyrhizobium sp. is preserved in the China General Microbiological Culture Collection Center, and has a preservation number of CGMCC No. 27064. The strain has good growth-promoting characteristics, and has strong nitrogen tolerance and broad spectrum. In the case of reducing the nitrogen fertilizer application amount, the strain can significantly increase the number of rhizobia, the number of lateral branches, the length of main stems and the number of fruit needles of peanuts in the flowering stage, and improve the yield of peanuts in the maturing stage, thereby providing a strain source for obtaining rhizobium agents suitable for peanut planting of various varieties, providing a technical basis for reducing nitrogen fertilizer application and saving planting cost, providing an efficient and stable growth-promoting microbial germplasm resource, expanding oil crop symbiotic germplasm resources in China, and providing a basis for research and development of efficient and stable microbial fertilizers and application technologies.

Computer-implemented method for providing control data for an application device for applying a fertilizer product on an agricultural field, comprising:providing field data of an agricultural field;providing first fertilizer product data, wherein the first fertilizer product data relates to a nitrogen fertilizer product comprising means for reducing nitrogen losses;providing second fertilizer product data, wherein the second fertilizer product data relates to a nitrogen fertilizer product not comprising means for reducing nitrogen losses;providing application rate data for the first fertilizer product and the second fertilizer product comprising application rates for applying the first fertilizer product and the second fertilizer product on the agricultural field based on the provided field data;providing an emission calculation model configured to calculate CO2 equivalents for the first fertilizer product and the second fertilizer product based on the first fertilizer product data and the second fertilizer product data and the application rate data for the first fertilizer product and the second fertilizer product;providing CO2 equivalent data for the first fertilizer product and the second fertilizer product utilizing the emission calculation model;providing a difference CO2 equivalent value between an application of the first fertilizer product and the second fertilizer product based on the CO2 equivalent data;providing a predetermined CO2 equivalent saving value;in case the difference CO2 equivalent value is above or equal to the CO2 equivalent saving value providing control data for an application device for applying the first fertilizer product on the agricultural field; and in case the difference CO2 equivalent value is below the CO2 equivalent saving value providing control data for an application device for applying the second fertilizer product on the agricultural field.