75 results about "Reduced nitrogen" patented technology

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..

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.

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 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 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 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.

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 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.

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 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.

This invention belongs to the field of agricultural ecological cultivation and soil ecological regulation technology, and discloses a method for reducing nitrogen and stabilizing maize yield by utilizing the synergistic effect of earthworms and nitrogen application. This invention establishes a cultivation method that can stably achieve nitrogen reduction and stable maize yield under field conditions by combining earthworm inoculation, nitrogen-limited basal application, and dynamic monitoring and regulation of soil inorganic nitrogen. Under the conditions of 220 kg N / ha nitrogen application, earthworm inoculation, and dynamic regulation, maize yield increased by 5.45% compared to the higher nitrogen application treatment, nitrogen fertilizer utilization rate increased by 15 percentage points, and soil inorganic nitrogen accumulation was significantly reduced. This invention overcomes the technical bias that "nitrogen reduction inevitably leads to yield reduction" and provides an operable bio-chemical synergistic solution for reducing fertilizer use and increasing efficiency.

The invention relates to the technical field of agricultural ecology and resource environment, and discloses a planting and breeding cycle management method with synergism of reduced fertilization and soil remediation. The method comprises the following steps: deploying an in-situ soil sensing network integrated with a microbial respiratory activity electrochemical sensor, and obtaining soil physicochemical and biological activity data in real time; livestock and poultry waste resource product component online monitoring and crop multispectral nutrition inversion information are combined; a soil-crop-cultivation coupled dynamic state characterization model is constructed; and generating a cooperative regulation and control instruction of partition variable fertilization and directional field returning of the organic materials, and performing optimization execution through closed-loop feedback. Through multi-source data fusion and intelligent decision making, accurate reduction of the chemical fertilizer and synchronous improvement of the soil ecological function are achieved, nitrogen fertilizer application can be reduced on the premise of stable yield, and the diversity of soil organic matter and microorganisms is improved.

This invention relates to the field of microbial technology, specifically disclosing a strain of *Alcaligenes faecalis* ALA-1 and its application in nitrous oxide emission reduction. This invention provides a strain of *Alcaligenes faecalis* (… Alcaligenes faecalis ALA-1, with accession number CGMCC No. 35322, can efficiently convert N... 2 O is restored to N 2 When applied to aerobic composting processes, it can significantly reduce nitrogen emissions during the composting process. 2 O2 emissions will promote the green and low-carbon development of the organic solid waste composting industry.

The application discloses a heterotrophic nitrifying bacterium D31, which is classified as Geobacillus proteiniphilus and has a strain preservation number of CGMCC NO.27788. The strain D31 can perform heterotrophic nitrification on a culture medium containing ammonia nitrogen, can grow on a simple carbon and nitrogen source culture medium and oxidize ammonia. The strain D31 can utilize simple nutrients to rapidly proliferate, is inoculated into compost after aerobic fermentation, can efficiently and rapidly oxidize ammonia nitrogen in livestock and poultry manure into nitrate nitrogen in a high-temperature period, reduces the volatilization of nitrogen elements in the form of ammonia gas in the compost, can not only reduce odor emission and protect the environment, but also can maintain nitrogen nutritional elements in the compost, improves compost quality, and has a wide application prospect. The application further provides application of the heterotrophic nitrifying bacterium D31 in livestock and poultry manure composting.

This application discloses a recovery system for reducing nitrogen consumption during low-temperature methanol gas washing and stripping, belonging to the field of gas purification technology in coal chemical plants. The system includes an interconnected medium-pressure flash evaporator, a CO2 desorption tower, and an H2S concentration tower. The lower end of section N of the H2S concentration tower is connected to the upper end of section A via a No. 11 flow pipeline. A No. 2 and a No. 5 methanol-rich pump are installed on the No. 11 flow pipeline. This application adds a flash stripping section (section N) in the middle of the original H2S concentration tower. In this section, gas from the lower part of the H2S concentration tower is used for stripping. The solution from section N is heated by heat exchange with methanol-rich liquid from the absorption tower to a higher temperature. This higher-temperature solution is then stripped again in the lower section of the H2S concentration tower. For plants requiring a smaller CO2 product gas volume, this significantly reduces the amount of nitrogen used for stripping, thus reducing operating costs.

The invention discloses a saline-alkali soil modifier for improving saline-alkali soil and reducing nitrogen loss and a use method thereof. The modifier comprises livestock manure, wheat straw, micron-sized charcoal, biochemical fulvic acid, amino acid, 20% gamma polyglutamic acid and nano attapulgite. In the using process, the soil conditioner is applied to saline-alkali soil to be treated, then the soil area where the saline-alkali soil conditioner is applied is turned over, and then sowing and irrigation are conducted. The components of the modifier have a synergistic effect, the saline-alkali soil is effectively improved, the nitrogen loss is reduced, and the modifier is convenient to use and suitable for large-area popularization and application.

This invention discloses a targeted carbon supplementation device and method for topsoil manure, relating to the field of agricultural machinery and equipment technology. It includes: a mounting base with a T-shaped mounting groove at the top and a hydraulic cylinder fixedly mounted at the bottom; a fixing plate fixedly mounted on the extended end of the hydraulic cylinder, with two uprights symmetrically fixed at the bottom of the fixing plate and an extension plate fixedly mounted on the side of the fixing plate; two symmetrically arranged guide rails fixedly mounted on the two uprights, each with a guide groove; a trenching mechanism rotatably mounted between the two uprights; and a soil cleaning assembly including a sliding plate, a bulldozing plate, and a vibration mechanism, with two support shafts fixedly mounted on both sides of the sliding plate and sliders rotatably mounted on the support shafts. This invention greatly promotes the activity efficiency of microorganisms, effectively reduces nitrogen volatilization and leaching, improves nutrient utilization, and significantly enhances the soil's carbon sequestration capacity.

A method for extracting copper from sulphide mineral ore, comprising the following steps: stacking the ore to form a pile (heap), a leaching step, irrigating the pile with a first irrigating solution containing an acidic nitrate solution and nitrite, thereby causing the oxidation of sulfide minerals inside the pile, oxidation of gaseous nitrogen oxide released during the oxidation of sulfide minerals inside the pile with oxygen to form nitrogen dioxide, and hydrolysis of nitrogen dioxide to form nitric acid and / or nitrous acid in the first irrigating solution inside the pile, to continue the leaching stage and reduce nitrogen oxide losses from the pile.

The utility model discloses a nitrogen making machine adsorption tower with a carbon molecular sieve protection structure, which belongs to the technical field of nitrogen making machine adsorption towers and comprises an adsorption tower body, a gas inlet pipeline is arranged at the bottom end of the adsorption tower body, a nitrogen outlet pipe is arranged at the top end of the adsorption tower body, and an oxygen outlet pipe is arranged in the middle of the adsorption tower body. The gas inlet pipeline, the oxygen outlet pipe and the nitrogen outlet pipe are respectively provided with a control valve. The device further comprises a lower sliding plate, a carbon molecular sieve and a protection structure. According to the adsorption tower, entering air is uniform in the adsorption tower body, the impact on the carbon molecular sieve is reduced, meanwhile, the carbon molecular sieve is pressed by the pressing mechanism, the constant pressure of the carbon molecular sieve is kept, and the carbon molecular sieve is prevented from being greatly abraded during operation, so that the carbon molecular sieve can be stably operated, and the service life of the adsorption tower is prolonged. The effect of reducing pulverization loss caused by mutual abrasion of the carbon molecular sieves is achieved, and reduction of the nitrogen production amount is avoided.

The invention relates to a method for reducing nitrogen content and Nb segregation in a high-Nb-content GH4169 alloy. The method comprises a vacuum smelting process and a vacuum self-consuming process. In the vacuum smelting process, nickel and niobium are all added into a furnace in the later stage of refining and fully stirred; in the vacuum self-consuming process, the smelting voltage is controlled to be 20-24V, and the molten drop rate is 8-9 drops / S; a cooling process combining water cooling and helium cooling is adopted in the smelting process, the helium cooling pressure in the steady state stage is 600-700 Pa, and the helium cooling pressure in the feeding stage is 200-300 Pa. By means of the method, the nitrogen content in the GH4169 high-temperature alloy with the high Nb content (5.4-5.5 wt%) can reach 35 PPm or below, the maximum size of nitride inclusions is 5 micrometers, and the Nb segregation phenomenon does not exist through electron probe experiment observation.

The application discloses a kind of interplanting reduced nitrogen application methods for promoting rape straw decomposition, belong to agricultural technology field.The high degree of lignification of summer soybean-summer corn strip intercropping under the previous rape straw in the multi-cropping system dry farmland of Yangtze River Basin, slow decomposition, high nitrogen input, low utilization rate problem, the present application utilizes the characteristics that soybean corn intercropping can accelerate straw decomposition, rape straw full amount rotary tillage is returned to field, corn and soybean are strip intercropped according to 4:2 row number ratio, corn band, soybean band nitrogen distribution ratio 3:1, total nitrogen input 150~210 kg / ha.The present application significantly speeds up the decomposition of rape straw by reducing precise zoned nitrogen application, the cumulative decomposition amount is increased by more than 11% compared with conventional nitrogen application and soybean monoculture;Promote cellulose, hemicellulose degradation and soil organic carbon accumulation, enrichment of microorganisms that promote decomposition.The present application can reduce nitrogen input, realize soybean and corn synergistic yield, achieve the synergistic effect of promoting decomposition, saving fertilizer and increasing efficiency.

This invention provides an application of a novel composite material in reducing nitrogen loss during composting. The method includes: a pile-building stage, in which a porous stabilizer is added to the mixed raw materials, and fermentation is carried out by bottom aeration and airflow membrane covering after pile building; a high-temperature control stage, in which biomass carriers pretreated with sodium humate, fulvic acid, and wood vinegar are injected into the pile in a grid pattern after the pile temperature reaches 50°C; and a post-maturation and bio-enhancing stage, in which biochar loaded with iron oxide is added, and a solid inoculant containing Acetobacter xylinum and fructose amino acid oxidase is applied to the surface of the pile, and the pile is turned lightly at regular intervals. This invention constructs a nitrogen preservation system that combines physical barrier control, chemical fixation, and biological assimilation through the sequential synergy of multiple materials such as porous stabilizers, functionalized biomass carriers, biochar, and inoculants, which can significantly reduce nitrogen loss during composting and improve compost quality.