1004 results about "Corn stover" patented technology

The invention discloses a bacillus subtilis microbial agent for promoting decay of corn straws and application of the bacillus subtilis microbial agent, the preservation date of bacillus subtilis K15 is May 21, 2024, the preservation unit is China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCC No.30716. The bacillus subtilis K15 has the advantages that the preservation number is CGMCC No.30716; the bacillus subtilis K15 is screened from soil in North China Plain, tests prove that the strain produces carboxymethyl cellulase, decomposition of corn straw can be effectively promoted, the decomposed straw provides a fertilizer source for wheat growth, growth of wheat plants and root systems is promoted, and the wheat yield is effectively increased. According to the invention, the function of the bacillus subtilis in straw decay promotion under the winter low-temperature condition in North China Plain is excavated, and a new strain resource is provided for a microbial fertilizer.

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.

Methods and systems for preparing agricultural residue or other agricultural feedstock for use as a pulp. The method includes providing non-wood agricultural residue (e.g., corn stover) or other agricultural feedstock that includes agricultural fibers, chemically pulping the agricultural fibers in a preliminary alkaline chemical pulping process at a low consistency and at a low temperature to produce partially pulped agricultural fibers, such step including separating lignin and hemicellulose from the partially pulped agricultural fibers, introducing the partially pulped agricultural fibers into a first reactor, wherein the first reactor operates at a low temperature of less than 100° C. (e.g., 65° C.), introducing the agricultural fibers from the first reactor into a second reactor, where the second reactor operates at a low temperature, of less than 100° C. (e.g., 94-96° C.), the second reactor operating at a higher temperature than the first reactor, to produce pulped agricultural fibers.

The invention discloses a microbial fertilizer and application thereof, and the microbial fertilizer is prepared from the following components: Penicillium janthinellum, Bacillus mojavensis, biochar, turfy soil, corn straw powder, bentonite and gamma-polyglutamic acid, and the microbial fertilizer is prepared from the following components: Penicillium janthinellum, Bacillus mojavensis, biochar, turfy soil, corn straw powder, bentonite and gamma-polyglutamic acid. The microbial fertilizer provided by the invention can effectively prevent and treat root rot of Amomum tsao-ko caused by fusarium oxysporum, and is beneficial to improving the yield of Amomum tsao-ko and prolonging the life of Amomum tsao-ko plants.

The invention relates to a soil conditioner for saline-alkali land treatment and a preparation method, and belongs to the technical field of soil conditioners. The soil conditioner for saline-alkali land treatment is prepared from a fermented fertilizer, biomass charcoal II, corn straw powder, attapulgite powder, humic acid and a compound microbial agent. The soil conditioner disclosed by the invention can be used for reducing the pH value of soil, reducing salinity, promoting the recovery of organic matters and improving the fertility of the soil, and is beneficial to improving the yield of crops.

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 base material and a method for improving the carbon sequestration capacity of an ecological restoration base material containing kitchen garbage through arbuscular mycorrhiza. The base material comprises a dry spraying ecological restoration base layer and a wet spraying surface layer. The surface layer is prepared from the following components in parts by weight: a kitchen waste ecological restoration base material carbon sequestration mixture A, planting soil, a soil adhesive, a water-retaining agent, biochar and a compound fertilizer; the base layer is prepared from the following components in parts by weight: a kitchen waste ecological restoration base material carbon sequestration mixture B, planting soil, a soil adhesive, 100-mesh corn straw, biochar and a compound fertilizer. According to the method, pollution of the kitchen garbage to the environment is effectively reduced, the resource value of rich nutrients in the kitchen garbage is fully played, the functions of organic acid generated after the kitchen garbage is decomposed and arbuscular mycorrhiza for adjusting osmotic equilibrium and the like are fully played, the soil structure of the saline-alkali area can be improved, the soil fertility is improved, and the soil quality is improved. The salt tolerance of the plant is improved while the alkaline environment is improved.

The invention discloses a preparation method of a modified corn straw nanocellulose-based dual-response controlled-release pesticide, and relates to the technical field of resource utilization of agricultural wastes and environmental protection. The method comprises the following steps: extracting nano-cellulose from corn straws, modifying the nano-cellulose with zein, preparing a modified corn straw nano-cellulose-based emulsion carrier, and preparing and evaluating the modified corn straw nano-cellulose-based dual-response controlled-release pesticide. The method verifies the effectiveness of the EDC / NHS cross-linking agent in an alcohol-soluble system, successfully modifies the corn straw nano-cellulose, realizes efficient utilization of waste resources, solves the problems of low utilization rate of traditional pesticides, combustion waste of corn straw and performance limitation of conventional cellulose, and has a wide application prospect. Meanwhile, a novel efficient, environment-friendly and economical dual-response controlled-release pesticide can be obtained, and important guiding significance is achieved for solving the bottleneck problem in the field of pesticide preparations.

The invention provides a formaldehyde-free high-strength moisture-proof shaving board and a preparation method thereof. According to the method, the surface layer material corn straw wood shavings of the shaving board are compounded in different sizes, modified isocyanate is selected as an adhesive of the surface layer material, nano-copper particles are added as an additive, meanwhile, poplar wood shavings are used as a core layer material, and a magnesium adhesive is matched, so that the prepared shaving board is extremely low in formaldehyde release amount, high in strength and high in toughness. The static bending intensity of the shaving board in use is effectively improved, and the thickness swelling rate of water absorption is reduced, so that the formaldehyde-free high-strength moisture-proof shaving board is obtained.

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 a method for enhancing hydrolytic acidification performance of a mixed raw material by biogas residue biochar prepared from anaerobic fermentation discharged materials, and belongs to the field of anaerobic digestion of organic solid wastes. According to the method, the kitchen waste and the corn straw are used as the mixed raw material, the biogas residue biochar is prepared from the wet anaerobic digestion discharged material added with the shell powder and the nano ferroferric oxide, and the biogas residue biochar is applied to the acid production stage of the mixed raw material to improve the hydrolytic acidification performance, so that the hydrogen production performance, the system stability and the biogas production performance of the mixed raw material are improved. Compared with a control group, the accumulated hydrogen yield of the mixed raw material is increased by 126.8%-133.0%, and the maximum hydrogen production peak is increased by 48.7%-67.9%. The maximum daily volatile fatty acid yield of an anaerobic system is improved by 33.7%-51.4% compared with that of a control group, and the stability of the system is also obviously enhanced. In the biogas production stage, the biogas yield is improved by 42.0%-51.8% compared with that of a control group. The method can significantly improve the hydrolytic acidification and biogas production performance of the mixed raw material.

The present invention belongs to the technical field of microbial agents, and specifically relates to a strain of Emericellopsispallida F27, a microbial agent and its application in the field of agriculture. The present invention provides a strain of Emericellopsispallida F27, with a deposit number of CGMCC No. 40123, and a microbial agent is prepared using Emericellopsispallida F27. The application results show that the strain of Emericellopsispallida F27 can increase the degradation rate of corn stalks by 30.55%, and the reducing sugar concentration in the culture solution reaches 25.3 mg / L. Emericellopsispallida F27 can significantly increase the proportion of large aggregates in the soil and significantly inhibit the growth of various sickle fungi. The application of the Emericellopsispallida F27 microbial agent can promote the growth of corn and wheat, improve the stress resistance of corn, and increase soil microbial biomass carbon, microbial nitrogen, soil soluble nitrogen, soil oxygen content and straw degradation rate.

The utility model relates to a corn harvesting device, and in particular to an ear and stalk harvesting platform, comprising a straw-pulling assembly, a stem-pulling roller located below the straw-pulling assembly, a bottom auger located below the stem-pulling roller, a throwing device located at the output end of the bottom auger, and an ear auger for transporting ears; it also comprises a front cross-knife assembly and a roller assembly located between the stem-pulling roller and the bottom auger. The ear and stalk harvesting platform of the utility model, by providing a conical head and spiral ribs and two types of stem-pulling plates on the stem-pulling roller to form a roller-plate combined stem-pulling, achieves smooth stem pulling without clogging, without damaging the stalks and ears, and has high stem pulling efficiency; by providing a roller assembly, the corn stalks are fully chopped, the structure is simple, and the working efficiency is high; the chopped stalks can be quickly, evenly and smoothly passed through the bottom auger through the oval-shaped structure-designed feed port into the fan and then thrown out, avoiding the stalks squeezing and blocking the channel.

The invention relates to the technical field of agricultural biomass pesticides, in particular to a preparation method of a lignin-based slow-release nano pesticide. According to the method, the cationic surface active agent-corn straw lignin nano pesticide with pH and enzyme double responsiveness is prepared through self-assembly. According to the material, cetyltrimethylammonium bromide (CTAB) is adopted as a cationic surface active agent to be prepared into modified lignin with corn straw, and the cationic surface active agent-corn straw lignin nano pesticide is further formed through a self-assembly method. The preparation method has the advantages of being simple in process, low in cost, environmentally friendly and the like, the obtained slow-release nano pesticide product is excellent in ultraviolet shielding performance, slow-release performance and insecticidal activity, pesticide can be accurately conveyed in a target spot mode, the possibility of pesticide residues and environmental pollution is remarkably reduced, and sustainable development of agriculture is promoted.

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 an acidic organic fertilizer and a preparation method thereof, relates to the technical field of organic fertilizers, and solves the problems of high alkalinity, fast decomposition and poor long-term carbon sequestration stability of existing organic fertilizers. The preparation method comprises the following steps: adding charcoal powder and FeCl3. 6H2O into absolute ethyl alcohol, uniformly stirring, performing ultrasonic treatment, drying, uniformly grinding, calcining in a muffle furnace, and grinding again to obtain charcoal-loaded nano iron particles; uniformly mixing fresh pig manure and / or chicken manure with crushed rice and / or corn straw, and adjusting the water content with water; adding charcoal-loaded nano-iron particles, uniformly mixing, and piling into a strip pile body; the temperature of the pile body is tested in real time, the pile is turned for multiple times in the heating process when spontaneous heating begins, the pile is not turned in the cooling process when spontaneous heating ends, when the temperature of the pile body is reduced to 40 DEG C or below, composting is finished, and the decomposed pile body sample is smashed to obtain the acidic organic fertilizer. The method has wide popularization and application prospects in agricultural waste resource utilization and organic fertilizer production.

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 provides a fresh corn header, which belongs to the technical field of corn harvesting and comprises a plurality of groups of harvesting chain wheels, each group of harvesting chain wheels are connected through a harvesting chain, the outer side of each harvesting chain is connected with a plurality of pushing blocks, and a material channel is formed between every two adjacent harvesting chains; the bottom of the harvesting chain wheel on one side is fixed to a bottom plate, and the bottom plate is fixed to the table body. An elastic ear picking device is further arranged on the bottom plate and arranged on the inner side of the harvesting chain, and a harvesting chain wheel on the other side of the elastic ear picking device is fixed to the table body. The table body is also connected with a stalk pulling assembly for pulling corn stalks; the stem pulling assembly is located at the bottom of the elastic ear picking device. According to the corn harvester, the elastic ear picking device moves along with corn when the stalk pulling assembly separates corn stalks from the corn, stress of corn kernels is reduced, meanwhile, the elastic ear picking device can change the size of a material channel according to the size of the corn, rolling of the corn is reduced, and therefore damage to the corn is reduced.

The invention provides a lignin-based porous carbon material for a supercapacitor electrode and a preparation method and application of the lignin-based porous carbon material, and relates to the technical field of supercapacitor electrode material preparation. The lignin-based porous carbon material is obtained by treating residues generated in preparation of alcohol through corn straw fermentation to obtain lignin, mixing the lignin with potassium hydroxide, and performing two-step activation. According to the preparation method, residues obtained after straw fermentation are adopted as raw materials, reutilization of the residues has high practicability and good economic value, the preparation method is simple, reaction conditions are not harsh, industrial implementation is easy, and batch production and application can be achieved. The lignin-based porous carbon material prepared by the method provided by the embodiment of the invention has microporous and mesoporous structures at the same time. When the composite material is applied to a supercapacitor electrode material, the composite material is low in resistance, good in conductivity, excellent in electrochemical performance and good in cycling stability.

The invention belongs to the technical field of gardening flower cultivation, and particularly relates to a soilless potted Chinese rose cultivation medium and a preparation method thereof.The medium is prepared from humus soil, perlite, vermiculite, coco coir, peat and other components according to a specific proportion, and good air permeability, water retention and nutrient balance are guaranteed. In addition, 5% of corn straw biochar and 1 * 10 < 8 > CFU / mL of bacillus subtilis and bacillus megaterium bacterial liquid are added into the substrate, so that the microbial activity and the root health are enhanced. Experimental data results show that the culture medium remarkably improves the growth speed, the flowering phase durability and the ornamental value of the Chinese roses, is suitable for potted plant culture in urban families and gardening landscapes, and has wide application prospects and economic benefits.

The invention discloses a compound bacterial fertilizer for reducing soil obstacles as well as a preparation method and application thereof, and relates to the technical field of biology. The compound bacterial fertilizer is prepared from a mortierella indurata bacterial agent, a trichoderma hedgehog bacterial agent, an osmanthus fragrans geotrichum bacterial agent and a bacillus cereus bacterial agent, the mortierella cinerea preparation is obtained by uniformly mixing a mortierella cinerea spore suspension and corn straw powder and then drying; the trichoderma hedgehog fungicide is obtained by uniformly mixing a trichoderma hedgehog spore suspension and corn straw powder and then drying; the osmanthus fragrans geotrichum fungicide is obtained by uniformly mixing osmanthus fragrans geotrichum spore suspension and corn straw powder and then drying, the bacillus cereus microbial inoculum is obtained by freeze-drying a bacillus cereus fermentation thallus. By applying the compound bacterial fertilizer to the surface layer of ginseng continuous cropping soil, the soil condition of the ginseng continuous cropping soil can be improved, ginseng growth is promoted, ginseng root rot is reduced, and the survival rate of ginseng plants is increased.

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 discloses corn straw pressing and burying soil covering equipment, which belongs to the technical field of agricultural equipment, and structurally comprises a crushing bin, a shoveling and guiding bin and a residue collecting bin, a shovel head and a soil preparation transverse cylinder are arranged at the front end of the shovel guide bin and the rear end of the crushing bin respectively; a transmission belt is arranged on the inner side of the shovel guide bin; the bottom of the slag collecting bin is fixedly communicated with a snakelike guide pipe, the lower end of the snakelike guide pipe extends to the deep position of the ground, a spiral conveying shaft is rotationally installed in the snakelike guide pipe, and a ground breaking plough is arranged on the front side of the bottom of the snakelike guide pipe; according to the application, corn straws and corn stubbles dispersed all around on the ground can be collected in a centralized manner, the direct contact amount of hard soil blocks and the crushing part is reduced, and the crushed corn straws and corn stubbles are fully mixed with a straw degrading bacterial agent and then are applied to the ground in a closed injection manner, so that the crushing efficiency is improved; the situation that straw chippings remain on the shallow layer of the ground and become nutrients for breeding of germs and eggs is prevented, adverse effects on the health condition of crops are avoided, and normal growth and development of the crops are guaranteed.

The present invention relates to the field of agricultural technology, and is a fertilization method and device based on returning corn straw to the field, comprising: receiving planting data sent by corn straw returning growers, obtaining multiple historical soil samples based on the straw returning area, detecting the multiple historical soil samples using a pre-constructed soil data detection method to obtain historical soil data, obtaining target soil data based on target crops, calculating the amount of straw per unit area according to the planting data, extracting a straw decomposition curve set from a pre-constructed database based on the amount of straw per unit area and the type of corn, obtaining unit mixed fertilizer amount data using the straw decomposition curve set, performing a fertilization operation on the straw returning area based on the unit mixed fertilizer amount data, and completing fertilization based on returning corn straw to the field. The present invention can achieve that after the initial addition of fertilizer when returning corn straw to the field, the soil corresponding to the target planting time can meet the growth requirements of the target crop.

The invention discloses a degenerated desert steppe seed reseeding formula and an application method, and belongs to the technical field of seed reseeding formula preparation. The degenerated desert steppe seed reseeding formula is composed of the following components in parts by weight: 50-70 parts of forage grass seeds, 10-20 parts of a compound fertilizer, 2-5 parts of a nano-complexing agent, 2-4 parts of sodium polyacrylate, 3-6 parts of a plant growth regulator and 35-50 parts of fermented cow dung. Wherein the forage grass seeds are formed by taking stipa capillata, artemisia frigida and kochia scoparia as a fixed combination and matching with one or more of polygonum aviculare beans, wheatgrass, lespedeza and caragana microphylla; the composite fertilizer is prepared from corn straw, acrylic acid, paraformaldehyde, urea and citric acid, and the nano complexing agent is prepared from 4-boric acid triphenylamine, 5-bromo-2-thiophenecarboxaldehyde, 2, 4-dimethyl pyrrole, triethylamine, N-bromo-succinimide, divaleryldiboron and caffeic acid phenethyl ester. The formula prepared by the method can effectively improve the recovery of the desert steppe.

The invention discloses a method for improving drought tolerance and yield of wheat through combined application of compost and sodium selenite, and belongs to the technical field of agricultural planting. According to the method, wheat is planted after compost is applied to soil, and when drought stress occurs, a sodium selenite solution is sprayed to wheat leaves, so that oxidative stress indexes such as MDA, H2O2 and O2 <-> of wheat can be remarkably reduced, and the activity of antioxidant enzymes such as SOD, POD, CAT and APX can be improved; physiological indexes such as chlorophyll a, chlorophyll b, total chlorophyll, carotenoid, protein, soluble sugar and proline of wheat leaves are improved, growth and yield related traits of the wheat are improved, and finally the drought resistance and yield of the wheat are improved. The compost is prepared by taking 50%-55% of corn straw, 10%-20% of flue-cured tobacco straw, 20%-25% of rice straw, 10%-15% of livestock manure and 0.1%-1% of bacillus subtilis as raw materials, adding organic wastewater or tap water, mixing, composting and fermenting.

The invention belongs to the technical field of heavy metal contaminated soil improvement agents, and particularly relates to microorganism modified biomass charcoal for cadmium contaminated soil remediation and carbon sequestration and emission reduction and a preparation method and application thereof. According to the method, a biomass charcoal material and a microbial remediation technology are coupled, mixed bacteria of bacillus subtilis, bacillus velezensis and rhodopseudomonas palustris are adsorbed and fixed by biomass charcoal prepared by taking corn straw as a raw material, and the prepared microbial modified biomass charcoal can be used for treating the heavy metal cadmium polluted soil, so that the heavy metal cadmium polluted soil can be effectively remediated. The dual functions of cadmium fixation and carbon fixation and emission reduction are efficiently achieved in a short time, and the method has important application value in remediation of heavy metal cadmium contaminated soil. Moreover, the microorganism modified biomass charcoal is simple in component and simple and convenient in preparation process, and has a very good popularization and application prospect.