646 results about "Corn stover" patented technology

The invention discloses a zinc-iodine battery positive electrode material based on corn straw shell derived porous carbon and a preparation method of the zinc-iodine battery positive electrode material. According to the material, corn straw shells serve as the sole carbon source, an indigenous nitrogen-doped biomass charcoal carrier with a hierarchical pore structure is prepared through pre-carbonization and KOH activation processes, and the material is characterized in that the specific surface area is larger than or equal to 1500 m < 2 > / g, and the micropore proportion is larger than 90%. The iodine is loaded on the carrier (the iodine content is greater than or equal to 45wt%) through a vacuum sublimation method to form the indigenous nitrogen-doped biomass charcoal / iodine composite material. According to the positive electrode material, through the synergistic effect of physical confinement and pyridine nitrogen chemical adsorption, the multi-iodide shuttle effect is effectively inhibited, so that the capacity retention rate of the zinc-iodine battery is greater than or equal to 93% after 40000 cycles under the current density of 2A g <-1 >, and the capacity retention rate is greater than 45% under the rate of 10A / g. The method has double benefits of agricultural waste resource utilization and high-performance energy storage device development.

The invention discloses a multifunctional low-temperature corn straw degradation complex microbial inoculant, a preparation method and application, the complex microbial inoculant is compounded by a plurality of microorganisms with straw degradation, potassium dissolving and growth promoting functions, and the complex microbial inoculant comprises the following strains: bacillus subtilis K15, curveolate Prickia L11 and bacillus mycoides L31. The complex microbial inoculant disclosed by the invention realizes synergistic interaction and functional complementation, and through scientific compounding of strains, the straw decomposition rate is remarkably increased, and the decomposition period is obviously shortened; the adaptive capacity and colonization competitiveness of microorganisms in a low-temperature and complex soil environment in winter are enhanced. The complex microbial inoculant disclosed by the invention also has multiple functions of degrading straws, dissolving potassium, producing IAA (Indoleacetic Acid) and the like. The soil potassium which is difficult to utilize can be converted into quick-acting potassium while the straws are quickly decomposed to release nutrients.

The invention relates to the field of agricultural fertilization, in particular to a corn straw returning-to-field and fertilization operation path collaborative scheduling optimization method, which comprises the following steps: performing standardization processing on farmland multi-source original data to obtain a field piece unit standardization feature vector; performing imbalance degree analysis on the feature dimension distance component to obtain a feature contribution balance factor; performing activeness evaluation on neighborhood membership distribution of the field units to obtain a spatial membership smoothing factor; obtaining adaptive distance measurement by combining a feature contribution balance factor and a space membership smoothing factor; and performing hardening processing on the final membership matrix to obtain an agricultural machinery path collaborative scheduling instruction set, thereby solving the problems of misalignment of a zoning result, fragmentation of a management boundary and unreasonable agricultural machinery path scheduling in an abnormal straw accumulation region based on a standard FCM clustering algorithm in the prior art.

The invention discloses a corn straw nanocellulose reinforced water-resistant fully-degradable mulching film and a preparation method thereof, and belongs to the technical field of agricultural mulching films. The method comprises the following steps: performing two-step DES treatment on corn straws to obtain a nano-cellulose dispersion liquid; a PVA solution with the concentration of 8-12 wt% is prepared; 1-3 wt% of an ultrasonic dispersion silicon source dispersion liquid is prepared; the preparation method comprises the following steps: adding 10 parts of PVA solution, 1.25 parts of silicon source dispersion liquid and 20 parts of glycerol into 100 parts of nanocellulose dispersion liquid to obtain film coating liquid, carrying out curtain coating in a polytetrafluoroethylene mold, and naturally drying to form the film. PVA has good film-forming property but poorer water resistance, and nano cellulose and nano silicon dioxide can be used as green modifiers to be blended with PVA and self-assembled to form a hydrogen bond cross-linking system, so that a'rigid cellulose and silicon dioxide network-flexible PVA matrix 'enhanced structure is formed. Meanwhile, forestry and agricultural residues (corn straw) are adopted as raw materials, nanocellulose is prepared through a two-step deep eutectic solvent (DES), and the problem of high pollution caused by traditional strong acid / strong alkali treatment is solved.

The invention provides a method for preparing an edible mushroom culture medium from agricultural waste biomass and application, and belongs to the technical field of agricultural resource utilization and edible mushroom culture. The edible fungus culture medium provided by the invention is prepared from the following components in parts by mass: 10 to 20 parts of wood dust, 15 to 30 parts of sawdust, 15 to 30 parts of corn straw, 20 to 30 parts of algae waste, 30 to 50 parts of cottonseed hull, 3 to 10 parts of chitosan, 3 to 10 parts of humic acid, 1 to 3 parts of gypsum, 1 to 3 parts of lime and 0.3 to 1 part of compound strain. By adopting the edible mushroom culture medium disclosed by the invention, the yield and the quality of mushrooms can be remarkably improved, and the quality of the mushrooms is effectively improved due to the addition of the algae waste, the humic acid and the chitosan. Meanwhile, the edible mushroom culture medium can also be used for cultivating other types of edible mushrooms such as oyster mushrooms and pleurotus eryngii, and the yield of the edible mushrooms is increased.

The invention provides a preparation method of a lanthanum oxide modified biochar fertilizer, and belongs to the technical field of agricultural fertilizers, and the preparation method comprises the following steps: 1, microwave activation of biochar: placing corn straw biochar in a microwave reactor for radiation to obtain porous activated biochar; 2, potassium ion loading: dipping the porous activated charcoal in a saturated KOH solution to obtain a solid precipitate, and drying the solid precipitate to obtain potassium-loaded charcoal; 3, lanthanum-organic complex preparation: mixing lanthanum oxide with citric acid, adding deionized water to form a suspension, and performing evaporative crystallization to obtain a lanthanum-citric acid complex; 4, compounding modified biochar: mixing the obtained lanthanum-citric acid complex with potassium-loaded biochar to prepare slow-release lanthanum oxide modified biochar; and 5, compounding a phosphate fertilizer to obtain the slow-release composite charcoal fertilizer. According to the method, the charcoal is modified through lanthanum oxide, so that the modified charcoal has a larger specific surface area, the problem of hardening of the saline-alkali soil is better solved, and the oxygen content of the soil is increased.

The invention relates to the technical field of sewage treatment, in particular to a method for improving the denitrification nitrogen removal performance of a corn or rice straw fermentation carbon source by using industrial glucose. According to the method, the straws are soaked and pretreated by adopting calcium peroxide, and meanwhile, in the anaerobic fermentation process, the anaerobic condition is kept through nitrogen, and zero-valent iron is added to obtain the straw fermentation liquor. Fermentation liquor and industrial glucose are mixed to serve as a composite carbon source, the activity of microorganisms in a sludge system is stimulated through the usability of the glucose, and the utilization rate of the microorganisms to the rice and corn fermentation liquor carbon source is increased; anaerobic fermentation conditions of rice and corn straws are optimized, the carbon source release rate is increased, the complexity of carbon source composition of fermentation liquor is utilized, the diversity of microorganisms is improved, excessive propagation of the microorganisms is avoided, and the biological denitrification capacity is improved. The method disclosed by the invention is beneficial to resource utilization of agricultural wastes, reduces the biological denitrification cost of sewage with a low carbon-nitrogen ratio, and promotes green and low-carbon development of sewage treatment.

The invention discloses a phosphate solubilizing bacterium with eurytopic characteristic and application thereof, the bacterium is separated from corn straw biochar in which rice is continuously planted for 3 years, is identified as Pseudomonas paaversuta and is named as MPP2401, the preservation unit of the bacterium is China Center for Type Culture Collection (CCTCC), the address is Wuhan University, Wuchang District, Wuhan, Hubei province, the preservation date is November 6, 2024, and the preservation number is CCTCC NO: M20242439. The strain can keep stable phosphate solubilizing capacity under the environmental conditions of 15-30 DEG C, pH of 7-10 and NaCl 0-0.8 mol.L <-1 >, and still has functional phosphate solubilizing capacity even under the condition of extreme low temperature of 5 DEG C, the composite stress of pH of 7-8 and NaCl 0-0.8 mol.L <-1 > and the composite stress of pH of 9-10 and NaCl 0-0.6 mol.L <-1 >. Meanwhile, the bacterium has the broad-spectrum antibacterial characteristic, and the antibacterial rate on fusarium graminearum, fusarium verticillioides and magnaporthe oryzae reaches 41.0-77.6%. Due to the unique wide environment adaptability and the phosphate solubilizing-bacteriostasis dual-function synergistic characteristic, a microbial germplasm resource with production-ecology dual values is provided for biochar bacterial fertilizer development, saline-alkali phosphorus activation and biological prevention and control.

The invention discloses a Vinck Cellulomicrobe and application thereof in degradation of corn straw and improvement of soil fertility, and belongs to the field of agricultural microbial technology and solid waste resource utilization. The bacterial strain can secrete a plurality of hydrolase and oxidase including AA10 family lytic polysaccharide monooxygenase, AA2 peroxidase, GH3 and GH1 beta-glucosidase, GH16 / GH17 beta-glucosan endonuclease and AA1 multi-copper oxidase. The bacterial strain has the advantages that the bacterial strain can secrete a plurality of hydrolase and oxidase; fermentation liquor is applied to soil according to the straw mass ratio of 1: 5, and the corn straw degradation rate can be increased under the condition that the mass ratio of soil to straw is 100: 1. Meanwhile, the microbial agent can synergistically improve soil nutrients and increase the contents of rapidly available phosphorus, rapidly available potassium, alkali-hydrolyzable nitrogen, soluble organic carbon and total phosphorus in soil. According to the microbial agent, a straw lignocellulose structure is effectively cracked through a multi-enzyme system synergistic effect, and the dual effects of accelerating straw degradation and improving soil fertility are achieved.

The invention relates to the technical field of saline-alkali soil improvement, and particularly discloses a method for improving light and moderate saline-alkali soil through winter rye crop rotation, which comprises the following steps of land parcel preparation, winter rye sowing, winter rye field management, management after winter green turning, winter rye harvesting, feeding sweet sorghum sowing and feeding sweet sorghum field management. According to the method, the moderate saline-alkali soil is improved by sowing the winter rye and sowing the feeding sweet sorghum, and after crop rotation of the winter rye and the feeding sorghum, the salt content and pH of the soil are effectively reduced, the soil structure is improved, and the saline-alkali soil is suitable for ploughing. Meanwhile, high economic benefits can be brought, two seasons of forage grass income is obtained per mu, meanwhile, the sediment transport amount in spring is obviously reduced in a land parcel covered with winter rye, compared with a corn straw stubble field, the sediment transport amount in the same period of the rye field is reduced, and losses of organic matter and nutrients of surface soil are reduced.

The invention provides a preparation method of a milk goat total mixed ration containing fresh oat grass, and the method comprises the following steps: preparing a first fermentation product from peanut straw, soybean meal and wheat bran, then carrying out mixed fermentation on the first fermentation product and corn straw to prepare a second fermentation product, and mixing the second fermentation product with other components containing the fresh oat grass to prepare the milk goat total mixed ration. The milk goat total mixed ration provided by the invention can improve the milk yield of milk goats or improve the level of polyunsaturated fatty acids in goat milk.

The invention discloses a corn harvesting device capable of automatically controlling stubble height, and belongs to the technical field of corn harvesting. The corn harvesting device comprises a machine body, a header, an auger, an electric push rod, a laser sensor, a hook plate, a baffle, a track, a spray head, a driving assembly, an unfolding assembly and a cleaning assembly. Laser sensors are fixedly connected to the two sides of the header, hook plates used for preventing corn straw from dumping are arranged at the top of the header, multiple sets of baffles used for preventing corn from flying out of the header are arranged at the top of the header at equal intervals, the track is connected with a driving assembly used for driving the hook plates to move, and the baffles are unfolded through an unfolding assembly installed at the top of the header. A spray head is arranged on one side of the track, and the auger sprays gas from the spray head through cleaning assemblies installed at the two ends so as to clean the interior of the track; the functions of automatically controlling the stubble height and preventing straw lodging can be achieved, and the loss rate of the corn harvesting device is reduced.

The invention discloses a vertical corn straw leaf and ear removing device, which belongs to the field of agricultural equipment accessories, comprises a main rotating rubber roller, an auxiliary rotating rubber roller, a transmission device, a motor and other components, and is characterized in that a 75-degree included angle is formed between the plane where the main rotating rubber roller and the auxiliary rotating rubber roller are located and the horizontal plane; the main rotating rubber roller comprises a rapid leaf removing section, a U-shaped ear picking section and a U-shaped ear picking claw, the surface of the rapid leaf removing section is coated with a rubber layer with patterns, the patterns are coarse patterns and can rapidly break skins, and the U-shaped ear picking section adopts a linear groove design parallel to a roller shaft and the protruding U-shaped ear picking claw. Under the relative rotation action of the driving rotating rubber roller and the driven rotating rubber roller, the corn straw leaves and ears are removed through friction force provided by the protrusions of the driving rotating rubber roller and torque of radial transmission, corn ears and leaves are removed at the same time, conditions are provided for subsequent straw skin and pulp separation, and the corn ear and ear removing efficiency is improved. The resource utilization of corn stalk skins and stalks is increased.

The invention relates to a preparation method and application of a corn straw beverage, belongs to the technical field of plant resource processing, and solves the technical problem of activity loss caused by easy oxidative degradation of flavonoid compounds in a corn straw water extract. According to the technical scheme, the method comprises the following steps: crushing corn straws, soaking in water, performing heat extraction for multiple times to obtain an extracting solution, performing rough filtration and centrifugation, and concentrating to obtain a water extracting solution; and mixing the water extract, sucralose, citric acid, potassium sorbate and purified water to prepare a beverage, sterilizing and filling. Flavonoid compounds are embedded through a potato starch nanoparticle and beta-cyclodextrin composite carrier, a sodium alginate-chitosan microcapsule double-layer coating and microcapsule jelly particle preparation technology is combined, a gel network is formed by compounding kappa-carrageenan and konjac glucomannan, and the embedding stability and release controllability of active ingredients are improved. The beverage prepared by the method has both herbal flavor and crisp and tender taste of jelly particles, effectively delays degradation of flavonoid compounds, and is suitable for being applied to development of functional plant beverages.

The invention belongs to the field of feed processing, and particularly relates to a sweet potato seedling and corn straw mixed silage preparation method which comprises the following steps: S1, raw material pretreatment: respectively chopping sweet potato seedlings and corn straws; s2, mixing: the chopped sweet potato seedlings and corn straws are weighed, an additive is added, the mixture is uniformly mixed, the additive is a mixed lactic acid bacteria additive, and the addition amount is 0.1 g / kg; s3, loading into a silage container, compacting and sealing; s4, storage: the fermentation temperature range is 15-28 DEG C, preferably 25 + / -1 DEG C. According to comprehensive evaluation, the sweet potato seedlings and the corn straw are mixed and ensiled according to the proportion of 1: 1, and the comprehensive value is the highest. The proportion can effectively balance dry substances and moisture of the two raw materials, and the silage which is excellent in smell, color and texture, complete in nutrition preservation and excellent in fermentation quality can be obtained after the mixed lactic acid bacteria additive is added for ensiling for 60 days.

The invention belongs to the technical field of crop planting, and particularly relates to a wheat and corn two-season-in-one-year shallow-buried drip-irrigation water and fertilizer integrated planting method and equipment, and the method comprises the following steps: after corn is harvested, corn straws are crushed and returned to a field, and then rotary tillage and compaction are performed to crush soil; wheat is evenly sown in a wide range, drip irrigation belts are laid in the middles of wheat sowing widths, the width of the wheat sowing widths is 30-50 cm, and the width distance between the wheat sowing widths is 15-30 cm; performing field management on the wheat until the wheat is mature and then harvesting; after the wheat is harvested, the corn is sown at intervals, the corn is sown on the two sides of the sowing width of the sown wheat, and wide and narrow rows are formed between the corn; performing field management on the corn until the corn is mature and then harvesting; the method can shorten the distance between the wheat seeds and the drip irrigation zone and between the corn seeds and the drip irrigation zone, is short in watering time after sowing, is beneficial to seedling emergence, seedling alignment and seedling strengthening of the seeds, and is beneficial to improving the crop yield.

The invention discloses a straw returning method based on corn and covered crop cultivation, which comprises the following steps: grading and crushing corn straws according to soil types, carrying out zoning treatment, combining a leguminous-gramineae-cruciferae ternary mixed sowing covered crop system, and matching a decomposition microbial inoculum and controlled release nitrogen fertilizer synergistic regulation technology. The efficient decomposition of the straws and the improvement of the soil quality are realized. The method can increase soil organic matters by 0.25%, increase corn yield by 12.7% and reduce nitrogen fertilizer loss by more than 30%, and is suitable for sustainable production in dry farming areas.

The utility model relates to a cutting device of a corn harvesting header, and belongs to the technical field of agricultural harvesters. According to the technical scheme, the stem pulling device comprises a left stem pulling roller assembly and a right stem pulling roller assembly which are axially symmetrically arranged on a rack body, each stem pulling roller assembly comprises a stem pulling roller main shaft, a stem pulling plate, cutters and a spiral conveying shaft, the rear end of each stem pulling roller main shaft is in meshed connection with a gearbox, the spiral conveying shafts are arranged at the front end of each stem pulling roller main shaft, and the cutters are evenly fixed to the outer surface of each stem pulling roller main shaft; the cutters are connected end to end to form an annular structure, and the head end of each cutter extends outwards and is provided with an inclined edge. A stem pulling plate is arranged on the outer side of each cutter and is a bent plate composed of a transverse plate and a vertical plate, the transverse plates are fixed to the outer surfaces of the cutters, and the vertical plates are adjacent to the head ends of the cutters. According to the corn stalk cutting device, the cutting device is simplified, a cutter box body does not need to be independently arranged, corn stalks can be directly pulled and cut up through the stalk pulling roller, the structure is simple, and the manufacturing cost is low.

The invention provides a method for preparing carbon fuel from corn straw based on a functional composite binder, and belongs to the technical field of biomass solid fuel preparation. The preparation method comprises the following steps: uniformly mixing corn stalk charcoal powder with a functional composite binder to obtain a mixture, and then carrying out hot-pressing activation molding to obtain the corn stalk charcoal fuel. The functional composite binder comprises the following raw materials: phosphoric acid, polysilicic acid, polyethylene and sodium lignin sulfonate; the addition amount of the functional composite binder in the corn stalk carbon powder is 10-15 wt.%. According to the method, the controllability of the quality of the raw material carbon is greatly improved, the functional composite binder is adopted, the forming density, falling and breaking resistance and durability of the carbon fuel are improved, the process stability and repeatability are high, and a foundation is laid for large-scale production.

The invention relates to the technical field of polymer composite materials, and provides a composite water-retaining agent based on charcoal and bentonite as well as a preparation method and application of the composite water-retaining agent. The composite water-retaining agent provided by the invention is prepared from the following raw materials: acrylic acid, 2-acrylamido-2-methyl-1-propanesulfonic acid, acrylamide, sodium hydroxide, N, N '-methylene bisacrylamide, ammonium persulfate, modified bentonite and corn straw biochar. The composite water-retaining agent provided by the invention has excellent salt resistance, water holding capacity and structural stability, and the water absorbency in pure water and a 0.9% NaCl solution respectively reaches 2547.30 g / g and 164.45 g / g; when the soil conditioner is applied to saline-alkali soil, the maximum water holding capacity of the soil can be remarkably improved. The preparation process is simple, the cost is low, and the method has important practical significance on promoting ecological environment restoration of the arid mining area and realizing coordinated development of mineral resource development and environmental protection.

The invention discloses a preparation method and application of a cobalt-doped biomass charcoal catalyst, and particularly relates to the preparation method of the catalyst comprising the following steps: S1, pretreatment of biomass charcoal, S2, preparation of a catalyst precursor, and S3, high-temperature calcination. According to the method, the corn straw is used as a biomass charcoal raw material, the preparation cost of the catalyst is reduced, an economic basis is provided for large-scale application of the catalyst, a degradation experiment of metalaxyl with different catalyst concentrations shows that when the concentration of the cobalt-doped biomass charcoal catalyst is increased, the degradation rate of metalaxyl is also increased, and the degradation rate of metalaxyl is increased. The traditional Chinese medicine residue is used as a biomass charcoal raw material, the traditional Chinese medicine residue is a waste obtained after traditional Chinese medicine production and is used for preparing the catalyst, resource utilization of the waste is achieved, solid waste discharge is reduced, and meanwhile three groups of experimental results show that the catalyst has efficient degradation capacity on acetamiprid.

The application discloses a kind of multifunctional low-temperature degradation corn stalk composite microbial inoculant, preparation method and application, the composite microbial inoculant is compounded by multiple microorganisms with straw degradation, potassium solution and promoting function, comprising the following strains: bacillus subtilis K15, curvularia geniculata L11 and bacillus mycoides L31.The composite microbial inoculant constructed in the application realizes synergistic effect and functional complementation, through strain scientific compounding, straw decomposition rate is significantly improved, and decomposition period is obviously shortened;Enhance the adaptability and colonization competitiveness of microorganisms in winter low temperature and complex soil environment.The composite microbial inoculant of the application also has multiple functions such as straw degradation, potassium solution and IAA production, etc.At the same time of releasing nutrients by rapid decomposition of straw, it can convert difficult-to-use soil potassium into available potassium.

The invention discloses modified biochar as well as a preparation method and application thereof, and belongs to the technical field of aerobic composting additives, the preparation method of the modified biochar comprises the following steps: adding corn straw biochar into a Na2HPO4 solution according to a solid-to-liquid ratio of 1g: (5-10) mL by adopting an impregnation method, adjusting the pH value of a mixed system to 10.8-11.2 by adopting an alkali liquor, and stirring to obtain a mixed solution; then carrying out magnetic stirring reaction, and after the reaction is finished, carrying out centrifugal separation, washing and drying to obtain the modified biochar. The prepared modified biochar is used as an aerobic composting additive, so that greenhouse gas emission can be remarkably reduced, nitrogen retention and compost nutrient content are improved, compost maturity is promoted, plant toxicity is reduced, and a microbial community structure is directionally regulated and controlled. According to the invention, the functionality of the biochar is enhanced through chemical modification, the synergism of pollution reduction, synergism, carbon sequestration and decay promotion is realized, and an effective technical path is provided for realizing low-carbon, efficient and sustainable organic waste resource utilization.

The invention relates to the technical field of agriculture, in particular to a soil conditioner for degrading soil fertilizer and pesticide residues and a preparation method thereof, and aims to solve the problems that although an existing soil conditioner can reduce the fertilizer and pesticide residues to a certain extent, secondary pollution is often caused, the cost is high, and the effect of degrading the soil fertilizer and pesticide residues is limited. According to the soil conditioner, humic acid, plant ash, corn straw, kieselguhr, polyglutamic acid and potassium fulvic acid are reasonably compounded, the physical and chemical properties of soil can be improved, the fertility of the soil can be improved, and after the complex microbial inoculants, the loaded pore-increasing charcoal and the coated sodium persulfate are added into the soil conditioner, under the synergistic effect of the three, the soil conditioner can improve the soil fertility. The efficient and long-acting degradation of fertilizer and pesticide residues in the soil is realized, the soil quality, the soil structure and the fertility can be improved, the healthy growth of crops can be promoted, the yield and the quality of the crops can be improved, the sustainable development of agriculture is guaranteed, and finally the comprehensive improvement of the soil is realized.

The invention belongs to the technical field of wheat planting, and particularly relates to a wheat planting yield per unit increase six-improvement microbial ecological planting method which comprises the following steps: S1, land parcel preparation: spraying 2kg of corn straw organic material decomposition agent per mu, crushing corn straws by using a rotary cultivator, raking the crushed corn straws into soil, and after 10-15 days, decomposing and decaying the original corn straws in the land parcel into organic fertilizer; s2, seed dressing with a biological seed coating agent: uniformly stirring the biological seed coating agent (powder), purpureocillium lilacinum (liquid additive) and normal-temperature clear water according to a ratio of 1: 1: 5, and uniformly mixing with the screened improved wheat seeds; s3, wheat seeds are sown in wide rows and in wide width, wherein sowing is conducted according to the width of 8 cm and the row spacing of 25 cm; s4, time-sharing, time-sharing, time-sharing, time-sharing, time-sharing and time And S5, spraying a microbial agent on leaf surfaces. According to the planting method, the yield per unit area can be greatly increased in a large area, the yield per mu is increased by 15% or above, quality safety is guaranteed, meanwhile, soil is repaired and improved, and the capacity of producing healthy agricultural products is restored.

The invention provides a microbial agent for efficiently decomposing corn straws in situ under a low-temperature condition as well as a preparation method and application of the microbial agent, and belongs to the technical field of agricultural microorganisms. The microbial agent is prepared from white rot fungi, cold-resistant paenibacillus, myrothecium delavayi, pseudomonas sp. And rhodobacter spp.. The microbial agent provided by the invention can adapt to a low-temperature environment, and compared with other microbial combinations, the microbial agent provided by the invention can significantly improve the straw degradation efficiency, the straw degradation rate under a low-temperature condition reaches up to 41%, and accumulation of organic matters in soil is facilitated.

The invention relates to the technical field of animal feed, in particular to cold-season yak supplementary feeding granules and a supplementary feeding method and application thereof. The supplementary feeding granular material for yaks in the cold season is prepared from the following components in percentage by weight: 10-13% of corn straws, 20-25% of sunflower seed shells, 35-38% of corn kernels, 9.4-10% of soybean meal, 8-10% of cottonseed meal, 0.8-1% of baking soda, 0.8-1% of table salt, 0.5-1% of feed premix and 4-5% of yeast leavening. Through a scientific formula, various nutritional ingredients needed by yaks can be provided, it is ensured that the yaks obtain comprehensive nutritional support in different growth stages, and meanwhile, high-energy nutritional ingredients can be provided to make up for a large amount of energy consumed by the yaks in the growth process; the feed can be converted into meat more efficiently, the growth speed and production benefits of the yaks are improved, and the feed has good digestibility and can be better absorbed by the yaks, so that feed waste is reduced, and the feeding efficiency is improved.

The invention discloses a corn straw biochar coupled eurytopic triazine herbicide degrading bacterium microsphere and a preparation method thereof, and belongs to the field of bacteria and fermentation engineering. According to the method, the corn straw biochar fired at high temperature is combined with the arthrobacter ureafaciens (Paenarthrobacter ureafaciens with the preservation number of CGMCC (China General Microbiological Culture Collection Center) No.34139), so that the microbial inoculum microspheres with wide environmental adaptability are prepared. The microbial agent can efficiently degrade triazine herbicides in farmland soil, remarkably reduces the adverse effects of the triazine herbicides on sensitive crops, and is suitable for farmland pollution treatment. The technical scheme provided by the invention is simple and convenient to operate, environment-friendly and wide in application prospect.

The invention discloses a method for screening and cultivating a bolete mutant strain, which belongs to the field of microorganisms, and mainly comprises the following steps: obtaining the bolete mutant strain by using a carbon ion beam irradiation technology, naming the bolete mutant strain as ng2, and preserving the bolete mutant strain with the preservation number of CCTCC (China Center for Type Culture Collection) M 2025077; inoculating the ng2 strain into a hypha rapid germination and propagation solid culture medium PDA or PDA + peptone + beef extract + yeast extract powder, wherein hypha begins to germinate after 4 days; the method comprises the following steps: inoculating a solid strain into a hypha rapid propagation liquid culture medium including cane sugar, corn flour, soybean flour, wheat bran, monopotassium phosphate and yeast extract powder, and generating a large amount of fungus balls within 7 days; inoculating a liquid strain into a fruiting culture raw material self-made fermentation material, corn straw, turfy soil and rice, wherein hyphae overgrow in 30 days; the ng2 strain is high in activity, high in growth speed and suitable for being used as an excellent bolete strain in the Heilongjiang region; the screening and cultivating method of the bolete mutant strain is mainly used for solving the problems that the propagation efficiency of the bolete strain is low, germplasm resources in northern areas such as Heilongjiang are deficient and the like.

The invention provides an agricultural waste composite modified edible fungus culture medium and a preparation method thereof. The agricultural waste composite modified edible fungus culture medium is prepared from the following components in parts by mass: 20 to 30 parts of corn straw, 15 to 25 parts of rice hull, 10 to 20 parts of sawdust, 25 to 35 parts of cottonseed hull, 5 to 10 parts of soybean meal, 0.5 to 2.0 parts of complex microbial inoculant, 3 to 8 parts of bentonite, 1 to 3 parts of chitosan, 1 to 2 parts of gypsum and 1 to 2 parts of lime. According to the invention, the complex microbial inoculants are adopted to carry out solid state fermentation modification on the basic mixture, bentonite and chitosan are compounded into the activated functional slurry, and through the synergistic effect of solid state fermentation and the functional slurry, the granular structure, water retention and air permeability of the matrix are fundamentally improved, and efficient activation and slow release of nutrients are realized; finally, the fruiting period of the shiitake mushrooms is shortened to be within 85 days, the yield is increased by 10% or above, the shiitake mushroom proportion is remarkably increased, and high-value utilization of agricultural waste is achieved.