158 results about "Nitrogen absorption" patented technology

The invention relates to the technical field of information management, in particular to a smart agriculture precision big data information management system, which comprises a growth index extraction module, a stage data clustering module, a nutrient fluctuation identification module, an agricultural material strategy generation module and a scheduling information scheduling module. According to the method, the acceleration criterion is constructed based on the continuous period leaf area index change sequence, transition node identification is completed in combination with the photosynthetically active radiation utilization rate and the nitrogen absorption rate change trend, accurate positioning of crop growth stage change time points is achieved, the stability of stage classification in a space region is enhanced, and the accuracy of crop growth stage classification is improved. The agricultural material putting grade is judged and the fertilization frequency and dosage are blended by analyzing a root zone soil nutrient concentration difference value and a rate fluctuation frequency detection mode in combination with moisture content and root activity conditions, and operation period adjustment is guided in a task schedule in cooperation with a meteorological element fluctuation rate. The precision of farmland crop stage identification and the timeliness of nutrient fluctuation response are integrally improved.

The invention discloses an application of a rice OsRNU7 gene. The registration number of the nucleotide sequence of the OsRNU7 gene in Genbank is LOC4337677, and the registration number of the nucleotide sequence of the OsRNU7 gene is LOC4337677. RNA-seq is utilized to discover that the OsRNU7 shows response to the external nitrogen supply level, and fluorescent quantitative PCR (Polymerase Chain Reaction) proves that the OsRNU7 is induced by high nitrogen. The OsRNU7 is knocked out, so that the nitrogen absorption rate, the plant height and the yield of the rice are reduced, and the comprehensive performance is that the nitrogen fertilizer utilization efficiency is reduced. The function of the OsRNU7 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 OsRNU7 in rice is provided.

The invention provides a method and system for calculating the utilization rate of soil nitrogen under the action of arbuscular mycorrhiza, and relates to the technical field of calculation of the utilization rate of soil nitrogen under the action of arbuscular mycorrhiza. Soil nitrogen absorption amount data of an experimental group and a control group are collected, meanwhile, the total amount of externally input nitrogen is recorded, and related photosynthetic parameters of plants are measured; in addition, through an in-vitro mycelium culture experiment, mycelium nitrogen absorption rates under different nitrogen concentrations are measured, and a semi-saturation constant and a nitrogen effectiveness index are calculated, so that a carbon-nitrogen coupling factor is calculated, morphological parameters of mycelia are collected, and a relation equation of a pipe diameter and a transport rate is established; calculating the total flux of the hypha network, calculating the original nitrogen utilization rate in combination with the nitrogen absorption amount difference value of the experimental group and the control group and externally input nitrogen data, and introducing a transportation continuity coefficient for dynamic correction to finally obtain the soil nitrogen utilization rate of the target area.

The invention discloses a nitrogen fertilizer synergist and application thereof, and belongs to the technical field of fertilizers. The nitrogen fertilizer synergist comprises the following raw materials in percentage by mass: 15-40% of a nitrification inhibitor, 5-10% of butyl dihydrojasmonate, 1-5% of a soil loosening agent, 30-50% of a dispersing aid, 5-10% of an anti-caking agent, 0.1-5% of a trace element fertilizer and 0-5% of nutritional ingredients. According to the nitrogen fertilizer synergist disclosed by the invention, by adding the dihydro jasmonic acid butyl ester, the dispersity of the nitrogen fertilizer synergist can be improved, the fertilizer efficiency of the fertilizer is improved, the growth of plants is promoted, the stress resistance of the plants is improved, the nitrogen fertilizer synergist also has double functions of delaying nitrogen conversion and promoting nitrogen absorption, the utilization efficiency of nitrogen is further improved, and the nitrogen fertilizer synergist is relatively good in flowability and can be applied to the field of agricultural production. The nitrification inhibitor is stable in high-temperature and low-temperature environments, is convenient to use, can be directly used for particle spraying or adding of fertilizer, and solves the problem that nitrification inhibitors such as DMPP can only be used after being dissolved by special solvents.

The invention belongs to the technical field of fertilization, and particularly relates to a method for promoting corn growth through root-leaf complementary nitrogen application under the salt stress condition and application. The invention provides a method for promoting corn growth by root-leaf complementary nitrogen application under a salt stress condition, corn is planted in saline soil, soil nitrogen application and leaf surface nitrogen application are performed, the soil nitrogen application amount is a soil nitrogen application amount threshold value, and the leaf surface nitrogen application amount is a leaf surface nitrogen application amount threshold value. As nutrient absorption of corn roots is blocked under the salt stress condition, nitrogen fertilizer is applied through soil and leaf surface complementation, and the nitrogen fertilizer is applied through leaf surfaces to supplement insufficient nitrogen fertilizer absorption of the corn roots, so that nitrogen absorption of the corn can be improved, stress resistance of the corn is improved, and growth of the corn is promoted.

The invention discloses application of a wheat nitrogen response gene TaNIA1 in cultivation of high-yield wheat. The invention belongs to the technical field of biology, and particularly relates to application of a wheat nitrogen response gene TaNIA1 in cultivation of high-yield wheat. The protein TaNIA1 disclosed by the invention can be applied to the following aspects: 1) application to regulation and control of plant yield; 2) application in preparation of products for regulating and controlling plant yield; the invention relates to application of TaNIA1 in cultivation of plants with changed yield, application of TaNIA1 in preparation of products for cultivation of plants with changed yield, and application of TaNIA1 in plant breeding. TaNIA1 influences nitrogen absorption and utilization of wheat, so that agronomic traits such as wheat tiller number, grain number per ear, ear length, hundred-grain weight and the like are remarkably increased, and the yield of wheat is finally influenced.

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 provides an aspergillus terreus JM-F5-6 strain and application thereof in promoting tomato growth and improving soil nutrients, and belongs to the technical field of microorganisms. The preservation number of the aspergillus terreus JM-F5-6 is CCTCC (China Center For Type Culture Collection) NO: M20232616. The conidia of the aspergillus terreus JM-F5-6 are spherical or oval, the surface is smooth, hyphae are colorless or slightly colored, the wall is thick, the hyphae are separated, and hypha branches are laterally connected to form a mesh topology. The aspergillus terreus JM-F5-6 has high protein decomposition capacity and acid production capacity, is beneficial to improving the soil environment, can enhance the photosynthesis and nitrogen absorption of plants and improve the health and growth situation of the plants, effectively improves the content of soil hydrolytic nitrogen, available phosphorus, quick-acting potassium and organic matter, improves the soil fertility, and has wide market application prospects.

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 an application of a rice OsARF24 gene. The login number of the nucleotide sequence of the OsARF24 gene in Genbank is LOC4352211, and the login number of the nucleotide sequence of the OsARF24 gene in Genbank is LOC4352211. The rice OsARF24 gene is a key element in an auxin signal path. Knockout of the OsARF1 can cause reduction of the expression quantity, the nitrate nitrogen absorption rate, the plant height and the yield of the nitrogen metabolism related genes of the rice, and the comprehensive performance is that the utilization efficiency of the nitrogen fertilizer is reduced. The function of the OsARF24 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 OsARF24 in rice is provided.

The invention discloses a Burkholderia cepacia MZ-8 which is preserved in Guangdong Microbial Culture Collection Center (GDMCC) on April 8, 2025, and the preservation number of the Burkholderia cepacia MZ-8 is GDMCC No: 66106. The research finds that the burkholderia cepacia MZ-8 can efficiently inhibit the growth of pathogenic bacteria of citrus canker, the inhibition rate of the burkholderia cepacia MZ-8 to the pathogenic bacteria of citrus canker reaches 98.27% in a pot culture test, and meanwhile, the burkholderia cepacia MZ-8 can dissolve organic phosphorus, generate iron carriers and fix nitrogen and promote plant growth. Therefore, the burkholderia cepacia MZ-8 disclosed by the invention has good application potential in the aspects of preventing and treating citrus canker, promoting absorption and growth of phosphorus, iron and nitrogen of plants and the like. The discovery of the bacterial strain enriches beneficial microbial resources for biocontrol and growth promotion, and provides a bacterial strain which is stable in antibacterial effect, efficient and environment-friendly for green biological control.

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.

A nitrogen concentration prediction method according to the present invention predicts the nitrogen concentration in molten steel during a vacuum degassing treatment. The method comprises a prediction step for calculating a predicted value of the nitrogen concentration in molten steel using a nitrogen concentration prediction model which is a physical model in which a gas-liquid reaction interfacial area for a nitrogen absorption reaction and a denitrification reaction is used as an input variable and the predicted value of the nitrogen concentration in molten steel S is used as an output variable. The prediction step includes an estimation step for estimating the gas-liquid reaction interfacial area by estimating at least one of a bubble reaction interfacial area, a molten steel bath surface area in the vacuum tank, and the amount of change in the gas-liquid reaction interfacial area due to generation of air bubbles from the molten steel, using a calculation formula in which vacuum degassing treatment conditions are used as variables.

The application discloses a protein separated from Pinus tabulaeformis Carr. Pinus tabuliformis ​ and an encoding gene PtAMT2.8 of the protein, which can significantly enhance nitrogen absorption and transportation of plants. 31019b The PtAMT2.8 gene is introduced into a yeast mutant strain with a deficiency in ammonium nitrogen absorption function, so that the growth phenotype of the yeast mutant is recovered, and the PtAMT2.8 gene is introduced into Pinus tabulaeformis and Arabidopsis thaliana, so that the nitrogen absorption and transportation capacity of the transgenic plants can be significantly enhanced. The application has important significance for accelerating genetic improvement of plants and cultivating new varieties with high yield, high quality and multi-resistance.

The invention discloses a protein which is separated from pinus tabuliformis and is capable of remarkably enhancing nitrogen absorption and transport of a plant, and a coding gene PtAMT2.8 of the protein. The PtAMT2.8 gene is introduced into a yeast ammonium nitrogen absorption function deficient mutant strain 31019b, so that the growth phenotype of a yeast mutant can be recovered, and the nitrogen absorption and transport capability of a transgenic plant can also be remarkably enhanced by introducing the PtAMT2.8 gene into pinus tabulaeformis and a model plant arabidopsis thaliana. The invention has important significance in accelerating plant genetic improvement and cultivating high-yield, high-quality and multi-resistant new varieties.

The utility model discloses a water and nitrogen absorption root system culture observation device for a leguminous green manure intercropping field. The water and nitrogen absorption root system culture observation device comprises an outer frame, an observation tank, a supporting frame and a climbing rod. The outer frame is of a cuboid structure, a plurality of containing grooves are formed in the outer frame and used for containing observation tanks, and labels are arranged on the front portions of the containing grooves. The observation tank is a transparent cylindrical tank with an open top and a closed bottom, and the outer wall of the observation tank is attached to the inner wall of the containing groove. The supporting frame is located in the observation tank and comprises a vertically-arranged supporting rod and a fixing ring. The climbing rods are rotatably arranged in the supporting frame, and threaded grooves with different curvatures are formed in the surfaces of rod bodies. Root growth is directly observed through the transparent observation tank, the device does not need to be opened, the natural growth environment of the root is prevented from being disturbed, and observation accuracy is improved. The threaded groove of the climbing rod guides the root system to grow orderly, so that the root system is uniformly distributed, the root systems at different positions are conveniently and comprehensively observed, and the growth condition of the root system is accurately evaluated.

The invention discloses application of CLE small peptide in promoting crop growth and development, and belongs to the technical field of bioengineering. Through water culture and soil culture tests, it is found that the growth and development of the tartary buckwheat can be remarkably promoted through exogenous application of the CLE7 small peptide, and the nitrogen absorption capacity of the tartary buckwheat is improved. A foundation is laid for analyzing the effect of the CLE small peptide in crop nitrogen absorption and utilization, and a basis is provided for developing the CLE7 small peptide into a novel polypeptide fertilizer for actual production in the future.

This invention discloses a selective CO2 capture device for industrial flue gas, relating to the field of industrial flue gas treatment and gas separation technology. The invention includes a distribution assembly, which comprises a distribution cylinder body. A rotating assembly is mounted on the inner wall of the distribution cylinder body. The rotating assembly includes a rotating support, and a gas storage assembly is mounted on the inner wall of the rotating support. A top cover is mounted on the top surface of the distribution cylinder body, and a driving arc block is mounted on the bottom surface of the top cover. A CO2 absorption assembly and a nitrogen absorption assembly are mounted on the outer wall of the distribution cylinder body. This invention uses the rotating assembly to drive the gas storage assembly to rotate, causing the driving arc block and the abutting arc block to periodically contact each other, thereby realizing a cyclic process of air intake to exhaust within the corrugated sleeve. The CO2 contained in the industrial flue gas is selectively absorbed by a solid amine adsorbent in the first reaction shell, and the nitrogen is selectively adsorbed by a carbon molecular sieve adsorbent in the second reaction shell, effectively achieving directional separation of gas components and improving gas purification efficiency and selective capture capability.

The invention relates to the technical field of microorganisms, and discloses a pseudobacillus strain FD-6, a microbial agent and application of the pseudobacillus strain FD-6 to promotion of growth of dendrobium chrysotoxum and nitrogen turnover efficiency. According to the present invention, the preservation number of the bacterial strain FD-6 of the bacillus sp. Is CCTCC (China Center for Type Culture Collection) NO: M 20252238, and the preservation number of the bacterial strain FD-6 is CCTCC NO: M 20252238; through bacterial liquid preparation and rhizosphere application, the growth of the dendrobium chrysotoxum root system can be obviously promoted, and the root number, the root system specific surface area and the root biomass are improved; meanwhile, rapid growth of the overground part is remarkably promoted, and the tiller number, the leaf number and the overground part biomass are increased. By comprehensively regulating and controlling the nitrogen accumulation amount, the nitrogen absorption efficiency and the nitrogen utilization efficiency of the root system and the overground part of the dendrobium chrysotoxum, the plant nitrogen turnover efficiency of the dendrobium chrysotoxum from the root system to the overground part of the dendrobium chrysotoxum is remarkably improved. The microbial inoculum prepared from the single strain of the pseudomonas strain FD-6 provided by the invention is simple in preparation process and extremely low in application cost, and has wide development and utilization prospects and popularization and application values.

The device comprises a supporting arm and a refractory cover installed at one end of the supporting arm, the refractory cover is provided with a downward opening, a plurality of side holes distributed in the circumferential direction are formed in the lower end of the side wall of the refractory cover, an argon outlet facing the lower end opening of the refractory cover is formed in the top of the refractory cover, and an argon outlet facing the lower end opening of the refractory cover is formed in the top of the refractory cover. And an argon pipeline communicated with the argon outlet is arranged in the supporting arm in a penetrating manner. Liquid slag on the liquid level is blown away through argon blown out of an argon outlet in the refractory cover, then the refractory cover is covered above a tapping hole area, molten steel enters the cover through a side hole in the lower end of the refractory cover and then flows into the tapping hole, and primary separation of the steel slag, secondary oxidation of the molten steel and nitrogen absorption are achieved. The slag is effectively prevented from entering the tapping hole area in the later tapping period, formation of vortex flow in a molten pool is slowed down, slag entrapment in the later tapping period is restrained, steel slag is prevented from being mixed out, the slag stopping quality and the molten steel quality are improved, and the metal yield is increased.

The present application relates to a kind of gas protection high-strength welding wire steel wire rod and its short process low-phosphorus low-nitrogen preparation method, realize the mass content of phosphorus at the end of electric arc furnace smelting less than 0.005%, the mass content of carbon 0.03~0.07%, the mass content of nitrogen less than 0.005%.The present application utilizes end temperature and composition control of electric furnace smelting process, ensures the composition of molten steel at the end of electric furnace smelting, thereby reduces the risk of long refining time and increasing phosphorus content caused by a large amount of alloy addition in LF refining.Secondly, by improving the slagging, oxygen supply and power supply system of electric furnace smelting process, high-efficiency deep dephosphorization is realized in the smelting process, and the nitrogen absorption caused by power supply is reduced.

The invention discloses an application of an indica rice OsRNU2 gene. The registration number of the nucleotide sequence of the OsRNU2 gene in Genbank is LOC4324161, and the registration number of the nucleotide sequence of the OsRNU2 gene in Genbank is LOC4324161. The difference of the indica rice OsRNU2 gene promoter is the reason for the utilization efficiency and yield of indica rice and japonica rice nitrogen fertilizer, and the indica rice OsRNU2 gene promoter sequence is shown as SEQ ID NO.2. In the background of Huajing indica 74, 159 parts of materials carrying IRAT261 single fragment replacement lines are used for QTL (quantitative trait loci) analysis, and the site qRNU2 influencing the nitrate nitrogen absorption rate is positioned. The OsRNU2 haplotype expression level in indica rice is low, so that the indica rice can accumulate more auxin. The excellent allelic variation of the OsRNU2 in the indica rice is introduced into the japonica rice, so that the nitrogen fertilizer utilization efficiency and yield of the japonica rice can be improved.

The application discloses application of a rice OsARF24 gene. The nucleotide sequence of the OsARF24 gene has an accession number of LOC4352211 in Genbank. The rice OsARF24 gene is a key element in an auxin signal pathway. Knocking out the OsARF1 can cause the expression amount of nitrogen metabolism related genes of the rice, the nitrate nitrogen absorption rate, the plant height and the yield of the rice to be reduced, and the nitrogen fertilizer utilization efficiency to be reduced in a comprehensive manner. The function of the OsARF24 gene in positively regulating the nitrogen fertilizer utilization efficiency of the rice is clarified, and a technical route for increasing the nitrogen fertilizer utilization efficiency of the rice by increasing the expression of the OsARF24 in the rice is provided.

The present invention relates to an alkali metal carbonate, more particularly to a natural alkali metal carbonate having lowered bulk density. The present inventors have found that a natural alkali metal carbonate having a bulk density less than 1000 Kg / m3 and an absorption pre size of more than 10 nanometers as measured using BET nitrogen absorption method provides the benefits of improved dispersibility, enhanced liquid carrying capacity.

The application discloses a Coelastrella sp. B2 strain, which can obviously improve soil quality, increase soil nutrient content, enhance microbial activity, and promote nutrient transformation and utilization. The strain can also synthesize metabolites with plant growth regulation and stress resistance enhancement functions, improve plant salt tolerance, and produce insecticidal metabolites to provide natural insect resistance protection for plants. In addition, the Coelastrella sp. B2 increases the abundance of various beneficial microorganisms in the soil, which play an important role in promoting plant growth, enhancing stress resistance, promoting nitrogen absorption, enhancing heavy metal pollution tolerance, participating in pesticide stress response, and inhibiting pathogenic bacteria, thereby improving the soil environment and promoting the healthy growth of plants.

The ultra-low carbon steel RH smelting system comprises a ladle furnace and a vacuum tank which are sequentially communicated, the vacuum tank is connected with a vacuum pipeline, the outlet end of the vacuum pipeline is connected with a pretreatment device, waste gas treated by the pretreatment device is discharged, the vacuum tank is located above the ladle furnace, and the vacuum tank is located above the ladle furnace. The vacuum tank is provided with an ascending pipe and a descending pipe, one end of the ascending pipe and one end of the descending pipe respectively extend into the ladle furnace, the other ends of the ascending pipe and the descending pipe are respectively communicated with a vacuum cavity of the vacuum tank, the position of the ascending pipe is fixedly connected with a three-way circulating pipe, and the position of the descending pipe is provided with a vacuum sealing cavity; the vacuum sealing cavity is arranged on the periphery of the descending pipe, the ascending pipe and the descending pipe are arranged in an asymmetric structure, and the length of the ascending pipe is larger than that of the descending pipe. The method is suitable for a pure steel production process for controlling gas inclusion ([N] and [O]) in steel and preventing recarburization and nitrogen absorption.

The invention provides application of an OsNER1 gene in regulation and control of nitrogen utilization efficiency and yield of rice, a nucleotide sequence of the OsNER1 gene is shown as SEQ ID NO.1, and the gene negatively regulates and controls nitrogen transport capacity of the rice under a low-nitrogen culture condition. Under the low-nitrogen culture condition, the overground part height and biomass of the Oser1 mutant plant are remarkably increased, and the inhibition of low-nitrogen stress on plant growth is effectively overcome. The 15N content ratio of the overground part to the underground part of the Oser1 mutant plant is obviously higher than that of a wild plant, which indicates that the nitrogen absorption or transport capability of the plant under a low-nitrogen condition is enhanced by the deletion of the OsNER1 gene.

The invention discloses an inhibitor for preventing excessive growth of towel gourd strips and application of the inhibitor, and relates to the technical field of planting. The inhibitor comprises the following components: phosphatidic acid, nitrifying bacteria and lignin, wherein the mass ratio of phosphatidic acid to nitrifying bacteria to lignin is (15-20): (16-20): (8-10). The phosphatidic acid and the nitrifying bacteria are introduced, so that the ammonium nitrogen absorption degree of towel gourd roots can be reduced, excessive growth of towel gourds is effectively prevented, the adverse effects of the inhibitor on the growth and quality of the towel gourds are avoided, and the method is low in cost, simple in process and easy to popularize and use.

The invention discloses an application of a tomato gene or a protein coded by the tomato gene in regulating and controlling the tolerance of plants to low nitrogen stress, and relates to the technical field of biology. The RBOH1 gene in the tomato is knocked out, compared with a wild plant, the nitrogen absorption capacity is reduced, the expression of nitrate transporter genes NRT1.1 and NRT2.1 is limited, under low nitrogen stress, the expression of the RBOH1 gene is increased by 3.2 times after treatment for one day, and is continuously and remarkably increased within 1-3 days, which indicates that the RBOH1 positively regulates the nitrogen absorption of the tomato.

This invention discloses a water and fertilizer integration decision-making method based on job window optimization and water-nitrogen synergy, relating to the field of intelligent irrigation and fertilization technology. The method uses the date on which the water or nitrogen gap first reaches the job trigger threshold during the future decision search period as the prediction benchmark date, and constructs multiple executable job windows around the prediction benchmark date. For each job window, the method evaluates the waiting loss before the job window, the risk of execution impact after the job window, and the loss of early execution. For each job window, the method calculates the target nitrogen application rate, basic irrigation amount, and main nitrogen absorption range, and predicts the main root zone distribution rate, main root zone water status, and leaching nitrogen below the root zone under candidate water and fertilizer combinations using a nitrogen transport response model. Furthermore, it employs water-nitrogen synergy hard constraints to construct a water and fertilizer synergy set, and jointly determines the final water and fertilizer implementation date, fertilizer application rate, and irrigation amount within the set.