364 results about "Low nitrogen" patented technology

The invention relates to the technical field of microorganisms, and provides a low-temperature-resistant heterotrophic nitrification-aerobic denitrification pseudomonas and application thereof, the strain is pseudomonas (Pseudomonas sp.) SW1, and the preservation number is CCTCC (China Center for Type Culture Collection) NO: M 20221797. The low-temperature-resistant heterotrophic nitrification-aerobic denitrification bacterium Pseudomonas sp. SW1 has the characteristic of low temperature resistance, can well grow at 4-10 DEG C, and has relatively strong heterotrophic nitrification-aerobic denitrification nitrogen removal capability, and the enrichment culture of the strain is carried out in a relatively low nitrogen source, and the condition is extremely consistent with the application scene of the strain in domestic sewage.

The invention provides a method for preparing a nitrogen-rich liquid fertilizer and a soil conditioner from agricultural biomass wastes, and belongs to the technical field of humic acid synthesis. According to the agricultural biomass waste treatment method, nano-bubble nitrogen sources are coupled with agricultural biomass waste for a hydrothermal reaction, and the nitrogen sources in the method serve as additives to provide nitrogen elements to improve the quality of humic acid and serve as catalysts to improve the yield; by adopting a nano bubble solution system, the contact area of a nitrogen source, agricultural biomass waste and water is increased, and the yield and quality of a product are improved. According to the method disclosed by the invention, the quality and yield of humic acid and hydrothermal carbon are improved, the content of nutrient elements such as nitrogen element in the product is increased, the problems of low nitrogen fertilizer utilization rate, single returning nutrient of fulvic acid, humic acid or hydrothermal carbon and the like are solved, and a new thought is provided for resource utilization of agricultural biomass wastes such as straws and the like.

The invention discloses a lake and reservoir nitrogen and phosphorus sensitive area division method and device, a medium and a product, and relates to the technical field of nitrogen and phosphorus sensitive area division, and the method comprises the steps: determining the type of an environment control unit of each minimum unit in a to-be-divided area; the to-be-divided areas are areas where lakes and reservoirs are located and upstream drainage basins, the minimum units are villages and towns, and the environment management and control units comprise a priority protection unit, a key management and control unit and a general management and control unit; determining the eutrophication risk level of each minimum unit in the to-be-divided region; based on the environment control unit type and the eutrophication risk level of each minimum unit, determining the type of a sensitive area corresponding to the minimum unit; and based on the type of the sensitive area of each minimum unit, carrying out sensitive area division on the to-be-divided area. According to the invention, division of high, middle and low nitrogen and phosphorus sensitive areas based on ecological environment zoning management and control and water eutrophication risk evaluation is realized.

The invention belongs to the technical field of steelmaking, and discloses a smelting method of high-scrap-ratio low-sulfur low-nitrogen molten steel, which comprises the following steps of: controlling the amount of molten iron in an iron ladle according to an expected scrap ratio, heating by using a direct-current iron ladle furnace, continuously adding scrap steel in the heating process, slagging, blowing argon and stirring, melting the scrap steel, desulfurizing and recarburizing, generating low-sulfur molten iron, slagging off, and loading into a converter for steelmaking; the method specifically comprises the stages of direct-current ladle furnace preparation, quantity-controlled iron injection, waste steel melting, desulfurization and recarburization, slagging-off and iron loading for steelmaking. According to the method, the waste steel can be smelted into low-sulfur molten iron for converter steelmaking, large-waste-steel-ratio, low-sulfur, low-nitrogen and low-pollution smelting is achieved, and low-carbon-emission and high-quality production is achieved.

The utility model discloses a hydrogen ammonia coupling low nitrogen burner relates to burner technical field, including first tank and second tank, be equipped with connecting subassembly between the first tank and the second tank, first tank far away from the one end of second tank is fixedly connected with the gas outlet pipe, the gas outlet pipe is communicated with first tank, and the gas outlet pipe is connected with the gas outlet pipe. A combustion assembly is arranged at one end of the gas outlet pipe away from the first tank; through the arrangement of the ammonia gas inlet pipe and the pipe connector, hydrogen and ammonia gas in a specific proportion can be injected into the cavity formed by the first tank body and the second tank body during working, the hydrogen and the ammonia gas are mixed through the premixing assembly and then sprayed out of the nozzle, the combustion temperature can be effectively reduced through the addition of the ammonia gas, NOx generation is reduced, meanwhile, the combustion speed of the ammonia gas is low, and the combustion efficiency is improved. And after the ammonia gas is mixed, the overall combustion speed can be reduced, the combustion stability is improved, so that the combustor has good combustion stability, and meanwhile, the emission of NOx is greatly reduced.

The invention discloses a low-calorific-value associated gas ultralow-nitrogen flameless combustion system, which relates to the technical field of combustion control and comprises a gas acquisition module, a premixing control module, a low-calorific-value gas pre-mixing module, a low-calorific-value gas pre-mixing module and a low-calorific-value gas pre-mixing module, multivariable cooperative control is adopted to adjust the mixing proportion of the low-heating-value gas with the stable pressure and the air, and premixed gas with the stable flow is obtained; according to the ultralow-nitrogen flameless combustion system for the low-heating-value associated gas, the combustion process is adjusted through a recirculation channel and dynamic power distribution, combustion state data are collected through a flame probe and a temperature sensor, airflow distribution of the porous ceramic combustor is adjusted according to the data, and finally stable combustion output is achieved. The method can effectively improve the combustion efficiency and stability of the low-heating-value gas and reduce emission, and is suitable for efficient and clean utilization of the low-heating-value gas such as industrial waste gas.

The embodiment of the invention provides a fermentation method of L-leucine and L-isoleucine. According to the method, at least one L-leucine or L-isoleucine producing strain is used for fermentation culture; according to the method, relatively cheap molasses with rich carbon and nitrogen sources is selected as materials, corn steep liquor with more impurities is abandoned, and the molasses is converted into a nutrient substance containing more carbon and nitrogen sources capable of being utilized by strains through enzymolysis; in addition, in order to control the ratio of carbon and nitrogen sources in the fermentation liquor, a more accurate material supplementing process is selected, so that the fermentation requirements of strains can be guaranteed, and the situation that the liquid nitrogen source of the fermentation liquor is too high and too low can be effectively avoided, and the purposes of increasing the yield and the sugar acid conversion rate and reducing heteroacid byproducts are achieved.

The invention discloses a ZmNRL1 gene and an application of a protein encoded by the ZmNRL1 gene in improving the nitrogen utilization efficiency of plants, the nucleotide sequence of the ZmNRL1 gene is shown as SEQ ID NO.1, and the amino acid sequence of the protein encoded by the ZmNRL1 gene is shown as SEQ ID NO.2. It is found that the corn ZmNRL1 gene can effectively regulate and control the nitrogen utilization efficiency of plants, corn seedlings can present a nitrogen starvation sensitive phenotype after ZmNRL1 mutation, the low nitrogen stress resistance of the corn seedlings and arabidopsis plants can be improved after ZmNRL1 overexpression, and meanwhile the plant biomass, the nitrate reductase activity and the nitrate nitrogen content are increased. The invention provides a gene resource for cultivating new low-nitrogen-resistant corn germplasm, and has important significance for increasing the yield of corn and improving the nitrogen utilization efficiency.

The invention discloses a protein related to low nitrogen and low phosphorus of wheat and application of the protein. The protein related to low nitrogen and low phosphorus of wheat disclosed by the invention is a protein with amino acid sequences shown as SEQ ID No.1, SEQ ID No.4 and SEQ ID No.7. The invention further discloses a preparation method of the protein related to low nitrogen and low phosphorus of wheat. Experiments prove that under high-phosphorus and low-nitrogen treatment, the plant height, overground fresh weight and overground dry weight of a mutant with the coding gene of the protein mutated are all remarkably lower than those of a wild type, the mutant shows intolerance to low-nitrogen stress, and under low-phosphorus and low-nitrogen treatment, the mutant shows intolerance to low-nitrogen and low-phosphorus stress. Therefore, the protein and the coding gene thereof can positively regulate the low-nitrogen and low-phosphorus tolerance of the plant.

The invention discloses an application of a rice OsRNU6 gene. The login number of the nucleotide sequence of the OsRNU6 gene in Genbank is LOC4332833, and the login number of the nucleotide sequence of the OsRNU6 gene in Genbank is LOC4332833. RNA-seq is utilized to discover that the OsRNU6 shows response to the external nitrogen supply level, and fluorescent quantitative PCR (Polymerase Chain Reaction) proves that the OsRNU6 is induced by low nitrogen. The OsRNU6 is knocked out, so that the nitrogen absorption rate, plant height, tillering and yield of the rice are reduced, and the comprehensive performance is that the utilization efficiency of a nitrogen fertilizer is reduced. The function of the OsRNU6 gene for positively regulating the utilization efficiency of the rice nitrogen fertilizer is defined, and a technical route for improving the utilization efficiency of the rice nitrogen fertilizer by increasing the expression of the OsRNU6 in rice is provided.

The invention discloses a low-nitrogen oxide burner structure which comprises an air inlet barrel, an air barrel, a fire gathering cover, a flame stabilizing barrel, a gas main pipe and a gas ejector with an ejection pipe. The air inlet barrel, the air barrel, the fire gathering cover and the flame stabilizing barrel are sequentially in butt joint and communicated to be used for conveying air, the gas main pipe is arranged in the air barrel, and the gas main pipe is branched into a plurality of gas branch pipes. A center air pipe is arranged in the center of the flame stabilizing barrel, a plurality of blades are arranged in the flame stabilizing barrel around the center air pipe, and gaps between the adjacent blades form outer air through grooves. The gas branch pipes extend into inlets of the injection pipes in a one-to-one correspondence mode with gaps, and the injection pipes are arranged around the flame stabilizing barrel by a circle. A two-stage air conveying channel is formed by the central air pipe and the outer air through groove, and a fuel gas input channel is formed by the injection pipe. The mixing uniformity of air and fuel gas is enhanced, graded conveying of the fuel gas and the air is achieved, combustion flames are stable, flue gas can flow back for combustion, and meanwhile generation of nitric oxide is reduced.

Various embodiments relate to methods and systems for removing phosphorus and / or nitrogen from water. A method of removing phosphorus and nitrogen from water includes passing starting material water including nitrogen and phosphorus through an elevated pH phosphorus removal stage. The method includes passing the water through an electrolytic nitrogen removal stage. The method includes passing the water through a galvanic phosphorus removal stage. The water produced by the method has a lower phosphorus concentration and a lower nitrogen concentration than the starting material water.

The invention belongs to the technical field of gene engineering, and particularly relates to application of a TGA7 gene and / or an encoded protein thereof in regulation and control of plant growth and low nitrogen stress adaptability. Amplification primers of the TGA7 gene comprise an upstream primer with a nucleotide sequence as shown in SEQ ID NO.1 and a downstream primer with a nucleotide sequence as shown in SEQ ID NO.2, and the nucleotide sequence of the regulatory gene TGA7 is as shown in SEQ ID NO.3. The amplification primer provided by the invention can improve plant growth and low nitrogen stress adaptability, promote growth of plant root systems, further promote nutrient absorption of plants and improve the yield of crops.

The invention relates to the technical field of gene engineering, in particular to application of wheat TaLNUE protein in regulation and control of low nitrogen stress tolerance of plants. According to the invention, a single-chain guide RNA of a target wheat TaLNUE gene is designed, an expression vector of the TaLNUE gene is knocked out, and the expression vector is transformed into wild type wheat, so that transgenic wheat with the function inhibited by the TaLNUE gene is obtained. Researches find that the spike length and the spikelet number of wheat under low nitrogen stress can be increased by inhibiting the expression of the wheat TaLNUE protein, so that the single plant yield and the total yield of the wheat under low nitrogen stress are increased, and the nitrogen absorption efficiency and the nitrogen utilization efficiency of the wheat under low nitrogen stress are improved. According to the technical scheme, a feasible method is provided for improving the wheat yield under low nitrogen stress by utilizing a genetic engineering technology.

The invention discloses a low-nitrogen gas burner suitable for various working conditions and a using method of the low-nitrogen gas burner. The low-nitrogen gas burner comprises an assembly cylinder, an outer-layer fire pan, a central fire pan, an inner-layer gas gun, an outer-layer gas gun and an oxygen gun. The height of the center fire pan is adjusted through the lifting assembly, and switching of three modes of air combustion supporting, oxygen-enriched combustion supporting and pure oxygen combustion supporting is achieved. The air adjusting assembly controls the combustion-supporting air flow; the flow comprehensive adjusting assembly adjusts fuel gas supply and oxygen supply in a linkage mode. The combustor adopts a staged combustion design, the inner-layer gas gun forms first-stage flame at a fire pan gap, the outer-layer gas gun and a combustion-supporting medium ejected from the central fire pan form second-stage combustion, and the temperature of the flame is reduced by ejecting hearth smoke. Cooperative control over all the executing mechanisms is achieved through the driving motor and the speed setting assembly, the beneficial effects that combustion modes are automatically switched, the flame temperature is accurately regulated and controlled, and emission of oxynitride is low are achieved, and the clean combustion requirements of different industrial furnaces can be met.

The present invention relates to a method for enhanced nitrogen removal from tail water based on a constructed wetland and a constructed wetland system. The method for enhanced nitrogen removal from tail water based on a constructed wetland includes: arranging a denitrification nitrogen removal area and an aerobic carbon reduction area between the water inlet area and the water outlet area of the constructed wetland, and the denitrification nitrogen removal area is provided with a mixed filler layer; diluting the anoxic sludge and introducing it into the water inlet area, the denitrification nitrogen removal area, the aerobic carbon reduction area and the water outlet area of the constructed wetland to achieve the first-stage biofilm formation treatment; introducing the tail water into the water inlet area, the denitrification nitrogen removal area, the aerobic carbon reduction area and the water outlet area of the constructed wetland to achieve the second-stage biofilm formation treatment; introducing the tail water into the water inlet area, the denitrification nitrogen removal area, the aerobic carbon reduction area and the water outlet area of the constructed wetland until the total nitrogen removal rate in the tail water reaches the standard and then discharging it. The present invention also provides a constructed wetland system. The present invention solves the problems of low nitrogen removal efficiency of the traditional constructed wetland for the tail water of urban sewage treatment plants and still relatively high total nitrogen concentration in the effluent water quality.

The invention provides application of a ZmARF4 gene in construction of low-nitrogen-resistant corn. After the ZmARF4 gene in the corn is knocked out, the corn has a more developed root system, a higher nitrogen absorption speed and a higher total nitrogen content under a low-nitrogen condition. The application of the application provides a new direction and material for breeding of corn low-nitrogen-resistant varieties.

The invention relates to the technical field of biology, in particular to a ZmTCP19 gene mutant and application of the ZmTCP19 gene mutant to regulation and control of the nitrogen utilization rate, the growth amount and the plant height of corn. ZmTCP19 gene mutants (a mutant zmtcp19-1 and a mutant zmtcp19-2) are obtained through a molecular genetics means, the functions of the ZmTCP19 gene mutants are deeply analyzed and identified, and results show that under the condition of low nitrogen, the total fresh weight of the zmtcp19-1 is reduced by 30.33% compared with that of a control group, and under the condition of normal nitrogen, the total fresh weight of the zmtcp19-1 is reduced by 25.54% compared with that of the control group; under the condition of low nitrogen, the total fresh weight of zmtcp19-2 is reduced by 25.19% compared with that of a control group, and under the condition of normal nitrogen, the total fresh weight is reduced by 17.30% compared with that of the control group. Meanwhile, the ZmTCP19 gene mutant can reduce the plant height of the corn and improve the lodging resistance of the corn.

This invention relates to the field of thermal power generating unit operation control, and discloses a method for coordinated control of coal consumption and low-NOx emissions in supercritical units. The method includes: collecting operating data such as unit load, coal feed rate, air volume, furnace outlet oxygen content, CO concentration, SCR inlet NOx concentration, SCR outlet NOx concentration, ammonia injection rate, and main steam pressure; dividing the control cycle according to the load change rate and the lag state of heat release into the furnace; generating candidate coal consumption optimization actions within the steady-state control cycle, and performing low-NOx margin verification and burnout constraint verification; when the verification fails, it is determined to be a low-NOx coal consumption conflict state, restricting the reduction of oxygen content and total air volume, and sequentially performing secondary air layer distribution correction, burnout air opening correction, main steam pressure setting compensation, and ammonia injection feedforward correction; after the control action is executed, the corresponding action is maintained, rolled back, or frozen based on the retest results. This invention can improve the synergy between coal consumption control and low-NOx emission control.

This invention relates to a high-efficiency nitrogen and phosphorus removal composite constructed wetland system based on short-cut nitrification-anaerobic ammonium oxidation (ATAO) co-embedded particles. The system comprises a surface flow constructed wetland, a vertical subsurface flow constructed wetland, an aeration pond, and a horizontal subsurface flow constructed wetland arranged sequentially along the water flow direction. The horizontal subsurface flow constructed wetland includes a soil layer and a layer of short-cut nitrification-anaerobic ammonium oxidation co-embedded particle filler. The main body of the composite constructed wetland system is submerged in the river channel, forming a closed corridor container through the constructed wetlands and the ecological pond frame, making full use of previously unusable space and achieving space saving. Compared with existing technologies, this invention overcomes the shortcomings of existing constructed wetlands, such as large land area, low nitrogen and phosphorus removal efficiency, and significant susceptibility to natural environmental influences. It has stronger processing capacity and better adaptability, achieving low-carbon, energy-saving, green, and highly efficient nitrogen and phosphorus removal.

The utility model relates to the technical field of combustors, and discloses a quasi-full premixing type ultra-low nitrogen combustor which comprises a combustor body, two inserting grooves are formed in the top of an opening of the combustor body, sliding grooves are symmetrically formed in the positions, located on the two sides of the inserting grooves, of the combustor body, and filtering assemblies are inserted into the two inserting grooves. Each filtering assembly comprises a filtering plate inserted into the corresponding inserting groove, a sealing frame is fixedly connected to the outer wall of each filtering plate, sliding blocks are fixedly connected to the bottoms of the two sides of each sealing frame, and inserting rods are fixedly connected to the bottoms of the sliding blocks. And in the state that the combustor body is not shut down, the filtering assembly close to the opening can be conveniently replaced, the working efficiency of the combustor body is improved, operation is convenient and fast, the installation and disassembly efficiency of the filtering assembly can be improved, and maintenance is convenient.

The invention discloses a pulverized coal selective oxygen group alkylation modification method, which starts from fire coal, and changes the molecular configuration of pulverized coal through a mechanical force chemical coupling alkylation reagent selective modification method, thereby influencing the migration and conversion path of fuel nitrogen in raw coal, realizing the directional regulation and control of the nitrogen-containing product of the fire coal, enhancing the homogeneous and heterogeneous reduction of NOx, and improving the combustion efficiency. And finally, ultra-low nitrogen emission of the fire coal is realized.

The invention belongs to the technical field of microalgae biological culture, discloses a method for promoting growth of nostoc by efficiently utilizing a nitrogen source through solid-liquid culture, and aims to solve the problems of low nitrogen source utilization rate and slow biomass accumulation in the conventional culture technology. The method is based on a closed photobioreactor with gas-liquid circulation, and comprises the following steps: preparing a nitrogen-free BG11 culture medium; coating nostoc on the surface of the sterilized porous hydrophilic sponge; placing the sponge in a reactor, and adding the culture medium until no accumulated water is infiltrated; after closing the reactor, controlling the temperature, lighting and other conditions, continuously / intermittently supplementing nitrogen and maintaining certain positive pressure, and circulating the culture medium to supplement nutrition; and taking the sponge after the culture is finished. The utilization rate of a nitrogen source is remarkably increased, the biomass obtained through culture is remarkably increased, culture conditions are stable, and the method is suitable for large-scale development of nostoc and development of high-added-value products.

The invention relates to a coal power plant flue gas denitration ammonia supply intelligent control method which comprises the following steps: acquiring historical data of coal power plant flue gas denitration and real-time detection data of a plurality of point locations on denitration inlet and outlet flue gas cross sections, and recording adjustment data of ammonia spraying branch pipe valves corresponding to ammonia spraying leveling of each point location, the historical data and the adjustment data are input into the LSTM neural network model to obtain nitrogen oxide prediction data at the next moment, the nitrogen oxide prediction data, the real-time detection data and the adjustment data are input into the random forest model to obtain a prediction value of the nitrogen oxide concentration of each point location, and the opening degree of an ammonia supply main adjustment valve is adjusted according to the average nitrogen oxide concentration to obtain the nitrogen oxide concentration of each point location. And adjusting the valve opening of each ammonia spraying branch pipe based on the predicted value of the nitrogen oxide concentration of each point location. Through the method and the device, the problem of low nitrogen supply amount control accuracy is solved, historical monitoring data and real-time detected multi-point detection data are integrated, and the accuracy of a prediction result is improved; leveling data are optimized through ammonia spraying, and a branch pipe control valve opening degree control strategy is provided.

The utility model discloses a coke oven gas low-nitrogen burner which comprises a burner body, a first gas inlet pipe is arranged on one side of the burner body, and the terminal of the first gas inlet pipe is connected with a gas outlet pipe. The fire gathering cover has the beneficial effects that the limiting frame is arranged at the position of the inserting hole in the fire gathering cover, and when the propeller drives the ignition rod to move downwards to enable the ignition gun to extend into the fire gathering cover through the inserting hole, the pull rod can be far away from the ignition rod through downward pulling force generated by downward movement of the ignition rod through the arranged hinge seat; after the ignition gun completes ignition, the propeller drives the ignition rod to move upwards, the pull rod is pulled again to be close to the ignition rod, the sliding cover slides in the limiting frame again to cover the insertion hole, and the situation that the flow path of flames is changed due to the formed insertion hole is avoided. The flame concentration effect is prevented from being reduced to influence the combustion efficiency.

The invention discloses a high-sulfur high-nitrogen inferior diesel oil processing method, which comprises: (1) in the presence of hydrogen, mixing an inferior diesel oil raw material with an alkali metal, and feeding into an alkali metal treatment reaction zone; (2) feeding the reaction effluent obtained in the step (1) into a separation unit to obtain a liquid-phase material flow; (3) mixing the liquid-phase material flow in the step (2) with an oxidizing agent, and enabling the mixture to enter an oxidation reaction zone for reaction; and (4) the reaction effluent obtained in the step (3) enters an extraction unit, and a final clean diesel oil product is obtained under the action of an extraction agent. According to the method, the inferior diesel oil is processed by adopting a non-hydrogenation technical means, and the clean diesel oil with low sulfur, low nitrogen and high cetane number can be directly produced.

The application discloses a kind of low nitrogen emission natural draft burners, it is related to low nitrogen burner field, including primary air structure, primary gas structure, secondary gas structure, tertiary gas structure, circulating flue gas structure, ignition burner, secondary air structure, secondary combustion zone, purging air structure.The low nitrogen emission natural draft burner of the application reduces the combustion reaction temperature and reaction rate, overcomes the problem of insufficient combustion air momentum of natural draft burner, inhibits unorganized diffusion combustion, effectively improves the efficiency of combustion, inhibits the generation of NOx, the fuel staging of burner uses multi-level, multi-direction distribution, strengthens the stability of combustion, adjusts control according to use, uses high-speed multi-state jet, while inhibiting backfire and local high temperature, further inhibits the influence of environment on natural draft burner, with natural ventilation and forced air blowing two working modes.

The low-nitrogen burner mainly comprises a low-nitrogen burner main body, an overhauling operation mechanism and a passing liquid discharging mechanism, the burner main body comprises an outer-layer gas gun, a gas-liquid flow dividing combined spray gun and a barrel, the gas-liquid flow dividing combined spray gun is provided with a liquid collecting groove, and the barrel is provided with a liquid outlet; the maintenance operation mechanism achieves lifting maintenance of burner components through a lifting motion module, worm and gear transmission and a locking component are adopted to ensure stability and quick disassembly, and the liquid passing discharging mechanism automatically opens a liquid discharging pipe to discharge liquid when liquid in a liquid collecting tank is excessive through the linkage design of a floating ball, a lever arm and a blocking spring. The burner is automatically closed after the liquid level is lowered, nitrogen oxides are prevented from exceeding the standard due to the fact that gas carries liquid for the second time, the burner has the functions of convenient maintenance and automatic liquid drainage, and the maintenance efficiency and the environmental protection performance are effectively improved.

The invention discloses a gene for promoting low-nitrogen efficient utilization of rice and enlarging grains and application of the gene. The gene is derived from rice and is named as OsUGT, and the nucleotide sequence of the gene is shown as SEQ ID NO.1; the amino acid sequence of the protein coded by the gene is as shown in SEQ ID NO. 2. The invention provides a construction method of an OsUGT gene overexpressed transgenic rice strain, which comprises the following steps: constructing pRHVc-OsUGT recombinant plasmids, transforming the pRHVc-OsUGT recombinant plasmids into calluses through an agrobacterium tumefaciens-mediated method, and screening resistant calluses and regenerating plants to obtain the OsUGT gene overexpressed rice. The OsUGT gene is overexpressed in a rice plant by adopting a pRHVc vector through a transgenic technology, so that the nitrogen utilization efficiency of the plant in a medium-low nitrogen stress environment can be remarkably improved, grain enlargement and grain weight increase can be effectively promoted, stable improvement of the crop yield under a low-nitrogen condition is realized, and the technical effect is clear and efficient.

The utility model relates to the technical field of low-nitrogen combustors, and provides a low-nitrogen combustor internal pressure detection device which comprises a multilateral lantern ring assembly, a plurality of triangular turning plates and a force detection mechanism, the multilateral lantern ring assembly is fixedly arranged on one side, close to a ventilation pipeline, of a primary air pipe and a secondary air pipe, and the triangular turning plates are arranged on the multilateral lantern ring assembly. The multiple triangular turning plates are rotationally connected to the multilateral lantern ring assembly, the multiple triangular turning plates are arranged in the primary air pipe and surround the primary air pipe in a circumferential mode, the multiple side edge contact strength detection mechanisms of the adjacent triangular turning plates are arranged, and the multiple strength detection mechanisms are fixedly connected to the multilateral lantern ring assembly. By means of the technical scheme, the problem that in the prior art, when airflow flows unstably, the real gas pressure is difficult to measure is solved.