36results about How to "High organic content" patented technology

The present application relates to the technical field of resource utilization of fruit tree branches, and provides a method for returning citrus branches to the orchard, which comprises the following steps: (1) crushing and fermenting the pruned citrus branches, and mixing the branches with organic fertilizer to obtain material A; (2) digging a ditch along a direction parallel to the tangent of the tree crown drip line; and (3) applying the material A obtained in the step (2) into the ditch, and then covering the ditch with soil. The method for returning citrus branches to the orchard can significantly improve the diversity of arbuscular mycorrhizal fungi and the stability of the community structure in the soil, and promote more arbuscular mycorrhizal fungi to act on the rhizosphere soil and root hairs of citrus, so as to effectively improve the physicochemical properties of the soil and promote the growth and development of citrus. The method for returning citrus branches to the orchard is a resource utilization of waste, and can better promote the green, low-carbon, efficient and sustainable development of the citrus industry.

The present application relates to the technical field of fertilizer, in particular to an organic leaf fertilizer and a production method thereof.The present application solves the problems of poor fertilizer efficiency and easy damage to soil structure.The present application improves the soil organic matter content of the organic leaf fertilizer by changing the dosage of kelp, the temperature and time of ultrasonic and the dosage of kelp extract; improves the relative content of plant chlorophyll of the organic leaf fertilizer by changing the dosage of earthworms, trypsin and amino acid extract; improves the soil porosity of the organic leaf fertilizer and reduces the soil bulk density by changing the dosage of shrimp shells, the temperature of removing protein and the dosage of chitosan extract; increases the plant leaf thickness of the organic leaf fertilizer by changing the dosage of straw and the dosage of cellulose extract; and improves the fertilizer utilization rate of the organic leaf fertilizer by changing the temperature and time of stirring and the time of emulsification and grinding.

The invention discloses a lignin-based liquid mulching film as well as a preparation method and application thereof, the liquid mulching film is prepared by taking lignosulfonate as a main raw material, compounding the lignosulfonate with chitosan and polyvinyl alcohol to form a basic solution, then carrying out crosslinking modification by epoxy chloropropane and complexing treatment by tetrakis hydroxymethyl phosphonium chloride, and finally adding nano kaolin and uniformly stirring. When in use, the fertilizer is diluted with water and then sprayed on the surface of soil to form a uniform covering film. According to the invention, a phenylpropane structure of lignosulfonate is fully utilized as a rigid framework of a polymer, and the obtained mulching film has good film-forming property, hydrophobicity and heat preservation and moisture conservation performance through a tackifying effect of chitosan, a toughening effect of polyvinyl alcohol and synergistic modification of the cross-linking agent and the complexing agent. The addition of the nano kaolin further enhances the infrared barrier ability of the mulching film and reduces heat loss at night.

This invention provides a method for enhancing the efficacy of *Citrus trifoliata* (bitter orange) cultivation and suppressing weeds, belonging to the field of ecological planting technology. This method is suitable for mature fruiting *Citrus trifoliata* forests, achieving both fertilization and weed suppression. It efficiently combines woody medicinal herbs, legumes, and herbaceous medicinal herbs, rationally intercropping them according to their growth and development cycles to fully utilize the plant growth cycles and achieve the goals of efficient land use, soil improvement, and diversified income synergy. This is of great significance for promoting the standardized and ecological cultivation of Chinese medicinal herbs. Using this method, the annual application of chemical nitrogen fertilizer can be reduced, increasing soil organic matter content; a year-round continuous weed suppression system is constructed, with wild peas covering in winter and cassia seed covering in summer, improving weed control efficiency and reducing manual weeding costs; significantly increasing the fruit setting rate, single fruit weight, and effective fruit components of *Citrus trifoliata*; and increasing economic benefits in the forest.

The application discloses a preparation method of slow-release phosphorus fertilizer based on buckwheat hull as raw material, and specifically implements the following steps: step 1, washing buckwheat hull with deionized water, drying and then crushing and sieving; step 2, extracting pigment from the sieved buckwheat hull; step 3, mixing and oscillating the treated buckwheat hull in step 2 with anhydrous calcium chloride; step 4, pyrolyzing and sieving the mixture in step 3 to obtain CaCl2 modified buckwheat hull biochar; and step 5, placing the biochar in a conical flask containing a phosphorus-rich solution, sealing and oscillating, then filtering the solid and drying to obtain slow-release phosphorus fertilizer. The application is simple in preparation, saves resources and protects environment, and solves the problems of excessive phosphorus in water and phosphorus deficiency in soil. On the other hand, slow-release phosphorus fertilizer is added into soil to slowly release phosphorus, avoids the problem of phosphorus loss caused by traditional chemical phosphorus fertilizer, and can also improve the physicochemical properties of soil, reduce the soil bulk density and increase the soil organic matter content.

The invention relates to the technical field of soil improvement methods, and discloses a clayey soil improvement method which comprises the following stages: S1-S4. Through a synergistic improvement mode, the content of organic matters in the soil is increased, the content of heavy metals in the soil is reduced, the hardening rebound rate is reduced, meanwhile, the pH value of the soil is adjusted to a suitable range of 6.0-7.5, and the comprehensive improvement effect is remarkable; meanwhile, contour line operation, multi-ditch drainage, straw covering and the like are arranged, so that the device can adapt to mountainous and hilly terrains and rainy and high-humidity climate in the southwest, and water and soil loss and modifier loss are effectively prevented; ecological materials such as bamboo fibers, earthworms and straws are adopted, so that the dosage of chemical reagents is greatly reduced, secondary pollution is avoided, and adverse effects are reduced after leaching agent residues are subjected to drainage and biodegradation; an improved closed loop is formed through later measures such as crop rotation, regular compensation and improvement, permeability maintenance and the like, rebounding after short-term effectiveness is avoided, and the improvement effect is effectively prolonged.

The application discloses a kind of perennial wild peanuts as grass fire dragon fruit cultivation method, S1.selects ground, ground and ridge;S2.punching post, planting pitaya seedling;S3.transplanting wild peanuts: wild peanuts branch according to travel distance 20~25cm, plant distance 15~20cm in the strip ditch of pitaya garden;S4.water and fertilizer management;S5.mowing: when wild peanuts flower basically withers, leaf color presents old green as a whole, that is, the aboveground part of wild peanuts is mowed with mower and directly returned to field, underground part rhizome is retained and respectively in March, June, September and November every year, a total of 4 times mowing.The application adopts perennial rhizome area group wild peanuts A.glabrata (PI262801) intercropping cultivation pitaya, and the pitaya garden benefits for many years after grafting planting once, can inhibit weed growth, compared with other green manure, wild peanuts have good effect on deep soil improvement, and the effect is remarkable.

The utility model discloses a kind of repair devices of hexavalent chromium contaminated soil, more specifically relates to soil pollution remediation technical field, including mixing shell, the transmission pipe that is rotated and installed in the mixing shell inner chamber bottom surface and is penetrated downwards, mixing pipe is fixed on the transmission pipe upper end, drive motor is also fixed in the mixing shell lower end, it is connected between the drive motor with the transmission pipe by gear set, transmission pipe inner ring is provided with screening assembly.The repair device of hexavalent chromium contaminated soil of the utility model, by the double effect of " mixing pipe rotation+blocking piece impact", the caked soil is broken to small particle, cooperate the cycle processing of screening assembly, ensure that soil particle size is uniform, improve the reduction of hexavalent chromium, adopt biochar as repair agent, not only can reduce hexavalent chromium, but also can improve soil structure;Device has good adaptability to different types of soil, can meet the demand by adjusting screening aperture, facilitate the operation of device.

The invention discloses a bio-organic fertilizer for relieving continuous cropping obstacles of tobaccos as well as a preparation method and application of the bio-organic fertilizer, and belongs to the technical field of bio-organic fertilizers. The bio-organic fertilizer is prepared by taking wood biochar, rice straw biochar, sludge wormcast and cow dung wormcast as organic matrixes, inoculating aspergillus fumigatus JD-33 with a specific function and performing fermentation. The biological organic fertilizer can effectively improve the continuous cropping soil structure, inhibit soil-borne pathogenic bacteria and adjust rhizosphere microflora, so that the incidence rate of tobacco diseases is remarkably reduced, the yield and the output value are increased, and the purposes of relieving tobacco continuous cropping obstacles and promoting agricultural sustainable development are achieved.

The application discloses a method for high-temperature and high-pressure collaborative treatment of red mud, coal or coal gangue, and belongs to the field of resource utilization of red mud, coal or coal gangue. The method comprises the following steps: mixing red mud, coal or coal gangue and water, and then placing the mixture into a high-temperature and high-pressure device; introducing an oxygen-containing gas or adding an oxidant; under the high-temperature and high-pressure conditions, mineral decomposition and reconstruction of the red mud and the coal or coal gangue occur, acidic substances produced by oxidation of sulfide minerals and carbon-based minerals in the coal or coal gangue and alkaline substances in the red mud are subjected to neutralization reaction; and after desalination of reaction products of the red mud and the coal or coal gangue, the reaction products are used as ecological matrix soil. The method disclosed by the application accelerates decomposition of alkaline minerals such as nepheline in the red mud and release of alkali under high-temperature and high-pressure conditions, and accelerates oxidation of carbon-based minerals and sulfide minerals in the coal or coal gangue and transformation of humus and humic acid, neutralizes alkaline substances and acidic substances produced in the reaction, realizes rapid dealkalization of the red mud, controls the degree of oxidation of the carbon-based minerals, and improves the content of organic matter in the reaction products, so that full resource utilization and ecological utilization of the red mud, the coal or the coal gangue are realized.

The present application relates to the technical field of microbial remediation, and particularly relates to a microbial improvement method and application of rare earth waste residue, the microbial improvement method of the rare earth waste residue comprises the following steps: S1-preprocessing of the rare earth waste residue: selecting the rare earth ore dressing waste residue with pH of 7-9, and removing large impurities therein; S2-mixing of raw materials: adding a microbial improver to the pretreated rare earth waste residue and mixing sufficiently until uniform; S3-microbial improvement: stacking the mixture of step S2 into a heap with a height of 1-1.5 m, and fermenting at 25-30 DEG C for 3-7 days, thereby obtaining the microbial improved rare earth waste residue. The microbial improvement method disclosed in the present application effectively improves the organic matter content of the rare earth waste residue, has an excellent application prospect in the fields of mine reclamation or landscaping, and conforms to the green development concept of solid waste resource utilization and ecological circulation.

The application provides a composition containing arbuscular mycorrhizal fungi (AMF) and biochar and application thereof in improving tobacco cadmium tolerance and / or improving soil, and belongs to the technical field of bio-agriculture. The application can effectively promote tobacco growth, improve tobacco agronomic traits and biomass, effectively improve tobacco cadmium tolerance, effectively reduce cadmium accumulation in tobacco, change the subcellular distribution of cadmium in tobacco, convert high-toxicity chemical state cadmium into medium-toxicity or low-toxicity cadmium, and is also beneficial to improving soil environment and nutrient regulation antioxidant enzyme activity, and provides a better soil environment for tobacco growth.

This invention provides a composite soil conditioner for acid inhibition and aluminum control, its preparation method, and its application. The conditioner consists of microcrystalline activated minerals, silicon-calcium materials, biomass alkaline materials, and microbial agents, wherein the microbial agents include rhizobia, Trichoderma harzianum, and Pseudomonas fluorescens. The specific raw material ratios can be adjusted according to different needs. Field trials are conducted to study the effects of different material ratios on improving soil acidity and increasing crop yield and quality, thus forming an acid soil conditioner formulation. The preparation method includes ultrafine grinding, microcrystalline activation, hybridization, and mixing steps. Microcrystalline activation is performed using an activator solution, and an organic binder is added during hybridization to form an organic-inorganic hybrid structure. This composite conditioner can effectively improve the physical effects and chemical reaction rates of acid soil conditioners and can be used to improve acidic soils.

The present application relates to sludge and solid waste treatment technical field, especially to a kind of sludge and urban source perishable organic solid waste controllable non-steady state steam thermal shock method.The method provided by the present application mixes and conditions sludge and urban source perishable organic solid waste, makes up the defect of single sludge organic matter low, significantly improves the overall organic matter content and calorific value of material;Non-steady state steam of high temperature and high pressure can be injected at high speed and released instantaneously by distributed gas guide device to form impact-shear coupling effect, realize the physical wall breaking of sludge bacteria-jelly-ball extracellular polymeric substance, and retain organic matter in solid product to the greatest extent;After forming controllable non-steady state steam shock environment in the reaction system, material can be rapidly heated, steam permeation and pressurized expansion, and combined with rapid pressure relief to realize steam transient expansion wall breaking.

The invention provides a treatment method for synergistic aerobic composting of faeces and urine-containing tofu cat litter and garden waste. The method specifically comprises the following steps: 1) raw material preparation, 2) functional flora inoculation, 3) composting facility preparation and adjustment, and 4) composting process control and management. The tofu cat litter and the garden waste are reasonably proportioned, and the carbon nitrogen ratio, the water content, the composting temperature and other key parameters are regulated and controlled, so that the problems that the manure-containing cat litter is difficult to stably compost, high in pathogen risk, heavy in odor and the like are effectively solved, safe and efficient resource utilization of the manure-containing cat litter is realized, the process is simple, and the method is suitable for small-scale or community-level popularization and application.

The invention discloses preparation of an immobilized material based on phosphate solubilizing bacteria and application of the immobilized material in soil, and belongs to the technical field of soil remediation microbial agents. The material takes bacillus megatherium and lignin as core functional components, and takes a mixed system of sodium alginate and sodium carboxymethyl cellulose as a carrier. The immobilized material is high in mechanical strength, good in stability and excellent in mass transfer efficiency, meanwhile, insoluble phosphorus is activated through metabolites secreted by bacillus megatherium, and the content of available phosphorus in soil is increased. The material can also improve the soil structure, improve the cation exchange capacity and the organic matter content, enhance the activities of peroxidase and superoxide dismutase of the rice, reduce the content of malonaldehyde, relieve oxidative damage caused by Cd stress, reduce Cd accumulation of the rice from the source and guarantee normal growth of the rice.

The application discloses a method for inhibiting the occurrence of tomato phytophthora root rot, and relates to the technical field of vegetable disease prevention and treatment, and comprises the following steps: step S1, drying Hericium erinaceus dregs; step S2, mixing the Hericium erinaceus dregs and dry cattle manure to obtain a mixture; step S3, applying the mixture to the farmland soil where tomato seedlings are to be transplanted, and ploughing and mixing uniformly; step S4, transplanting the tomato seedlings into the farmland soil; step S5, soaking the Hericium erinaceus dregs in water to obtain a dregs leaching liquor; and step S6, performing root irrigation with the dregs leaching liquor at multiple times two weeks after the tomato seedlings are transplanted to before flowering. The method uses the residual nutrients in the dregs to supplement the growth requirements of the tomato for various nutrients, improves the growth of the tomato, enhances the resistance of the tomato to pathogenic microorganisms, uses the residual fungi and secretions in the dregs to inhibit the growth of the phytophthora root rot pathogenic bacteria, performs root irrigation with the dregs leaching liquor, supplements the plant nutrition, and inhibits the activity of the pathogenic bacteria.

This utility model relates to a straw cutting and discharging device for a straw crushing and returning machine, comprising a housing with a feeding end and a discharging end; a fixed blade assembly including a feeding plate, fixed blades, and a fixed blade shaft, wherein the feeding plate is disposed at the feeding end of the housing; adjusting plates are installed at both ends of the feeding plate, the adjusting plates abutting against the inner wall of a side plate and being able to move longitudinally along the side plate, and a first locking element is provided between the adjusting plate and the side plate to prevent the longitudinal displacement of the adjusting plate; a strip-shaped hole matching the fixed blade is formed on the feeding plate, and the fixed blade extends upward through the strip-shaped hole; the two ends of the fixed blade shaft pass through the adjusting plate and are rotatably connected to the side plate, and a second locking element is provided between the side plate, the adjusting plate, and the fixed blade shaft to prevent the rotation of the fixed blade shaft. The adjustable function of the feeding plate and the fixed blade of this utility model significantly improves the cutting efficiency, adaptability, and reliability of the straw crushing and returning machine.

The utility model discloses a kind of multi-shaft straw deep injection still field machines, including protective buckle cover, outer drive assembly and retarder, the retarder is installed to the top of the protective buckle cover, the outer drive assembly is installed to the side of the protective buckle cover, the output shaft of the retarder is connected to the outer drive assembly, the protective buckle cover is in installed with the conveying and crushing assembly of V-shaped arrangement, the conveying and crushing assembly's both sides are respectively provided with flail roller and deep plough roller, the conveying and crushing assembly includes upper crushing strip frame, lower crushing strip frame, a plurality of air conveying and crushing roller are rotatably installed on the upper crushing strip frame and the lower crushing strip frame, upper conveying and crushing transmission assembly is installed on the upper crushing strip frame. Advantageous effect lies in: deep injection still field of surface straw can be realized one-time, it is beneficial to straw completely remaining in soil, and particle uniform decomposition is fast, increase soil organic matter content, need not secondary plough bury, improve straw still field efficiency.

The application discloses a system and method for resourceful and collaborative treatment of domestic sewage and kitchen waste, which is provided with an organically connected enhanced pretreatment unit, a carbon and phosphorus recovery unit, an enhanced biological treatment unit, a deep treatment unit and an energy recovery unit, is based on nitrification and denitrification denitrification treatment, is supplemented by deep treatment of pollutants, efficiently recovers carbon and phosphorus at the front end, adopts a water source heat pump and cogeneration at the tail end to realize energy recycling, deeply treats pollutants of the domestic sewage, outputs high-quality recycled water, collaboratively treats part of the kitchen waste, maximally recycles and utilizes energy and resources in the domestic sewage and the kitchen waste, reduces operation cost of a sewage plant, and contributes to carbon emission reduction and phosphorus crisis solving.

This invention provides a method and application for preparing bio-organic fertilizer through synergistic composting of biochar-containing biogas residue, belonging to the field of organic fertilizer preparation technology. The method includes: preparing biogas residue through anaerobic fermentation of livestock and poultry manure and crop straw; adding biochar and a compound microbial agent; conducting high-temperature aerobic composting; and obtaining bio-organic fertilizer through maturation and aging. The amount of biochar added is 5%-10% of the dry basis weight of the composting raw materials; the aerobic composting time is 35-45 days; and the high-temperature composting temperature is 55-65℃. The compound microbial agent includes *Bacillus steatophilus*, *Bacillus amyloliquefaciens*, and *Bacillus mucilaginosus*. The bio-organic fertilizer obtained by this invention can be used for crop soil improvement. This invention, through the synergistic effect of biogas residue, biochar, and compound microbial agent, effectively shortens the composting cycle, improves compost maturity, reduces nitrogen loss, passivates heavy metals, and significantly improves the quality of organic fertilizer.

This invention provides an activated sludge sorting method and a wastewater treatment method. The activated sludge sorting method includes the following steps: supplying a portion of activated sludge from a biological treatment tank to an activated sludge sorting device; sorting the portion of activated sludge to remove sludge residue, thereby obtaining first activated sludge; and returning the first activated sludge to the biological treatment tank; measuring the organic matter content in the first activated sludge to obtain a first organic matter content; and comparing the first organic matter content with a predetermined organic matter content value to determine whether further sorting of the activated sludge in the biological treatment tank, including the first activated sludge, is necessary. By employing the activated sludge sorting method of this invention, the sorting status of the activated sludge can be monitored in real time based on the organic matter content, thereby improving the treatment effect of the activated sludge process.

This invention discloses a method for intercropping multiple forage grasses in citrus orchards. Addressing the drawbacks of traditional clean cultivation management and single-grass intercropping in citrus orchards, it employs a mixed sowing of four varieties: ryegrass, white clover, gnaphalium affine, and milkvetch. It includes standardized steps for orchard pretreatment, seed pretreatment, precision sowing, seedling management, growth period management, forage harvesting and returning to the field, and water and fertilizer regulation. Strict control of parameters at each stage is maintained, and a specific ratio of compound bio-fertilizer is selected to optimize the citrus water and fertilizer management scheme. This invention achieves year-round closed coverage of the citrus orchard through the complementary characteristics of the four forage grasses, improving the control rate of noxious weeds, reducing soil erosion, increasing soil organic matter content, and increasing citrus yield per acre. It combines the advantages of improving soil fertility, suppressing weeds and conserving moisture, improving quality and efficiency, and promoting a green and ecological environment, thus constructing a highly efficient and sustainable citrus ecological planting system.

The application provides a residual film recycling machine and belongs to the technical field of agricultural land preparation machinery. The machine comprises a main frame body, a first support frame is installed at the bottom of one side of the main frame body, spring bodies are installed at the top of both sides of the first support frame, and an electric telescopic rod is installed at the bottom of the first support frame. The soil loosening and stem collecting mechanism and the stem conveying and soil vibrating mechanism are arranged. The soil loosening and stem collecting mechanism can be used to quickly collect the stems and leaves of high-ridge crops such as strawberries after the fruits are harvested when the land is prepared in high-ridge fields. Meanwhile, the soil covering the residual film on both sides of the residual film is loosened, which provides convenience for the subsequent residual film recycling operation. The stem conveying and soil vibrating mechanism conveys the stems and leaves to the top of the device after the stems and leaves are collected, and the stems and leaves are effectively separated from the soil residues by means of the vibration generated by the movement of the device during the conveying process.

The invention discloses a water-saturated wet material hydrothermal cracking reaction kettle and a hydrothermal cracking fertilizer preparation method. The water-saturated wet material hydrothermal cracking reaction kettle comprises a tank body with a jacket structure, a steam vertical spray pipe and a steam side spray pipe, the tank body comprises a tank body straight section, a tank body upper part and a tank body bottom; and at least two steam vertical spray pipes extend into the tank body from the top of the straight section of the tank body. The tail end of the steam vertical spraying pipe is provided with a plurality of branch pipe nozzles which are arranged in the rotating direction, so that steam sprayed through the branch pipe nozzles can be sprayed into the tank body in the consistent rotating direction. The steam side spraying pipe is arranged on the side wall face of the bottom of the tank body and provided with a bent nozzle, and a non-return device is arranged in the bent nozzle. The rotating direction of the bent nozzle is opposite to the rotating direction of the branch pipe nozzle. The device has the advantages of promoting uniform mixing of materials, shortening heating time, reducing energy consumption and the like, has good fertilizer efficiency, does not have an aerobic composting process, well solves the problem of long period of traditional fertilizer preparation, and saves land occupation, labor investment and other investments.

The invention belongs to the technical field of liquid fertilizers, and discloses an organic water-soluble fertilizer containing humic acid and fulvic acid as well as a preparation method and application of the organic water-soluble fertilizer. The organic water-soluble fertilizer comprises a composite humic acid matrix, urea, monoammonium phosphate, potassium nitrate, polyglutamic acid, triphenylsilanol, nano silicon, a composite microbial inoculant and disodium ethylene diamine tetraacetate by weight, wherein the composite humic acid matrix is prepared by mixing hydrothermal synergistic conversion humic acid and biochemical fulvic acid according to a ratio of (2-4): 1; the preparation method comprises the following steps: dissolving the basic components, chelating and synergistic, compounding and curing, and treating a finished product, wherein the curing temperature is controlled to be 35-40 DEG C in the compounding and curing stage. Short-term adjustment and long-term stability of soil pH can be considered, the flocculation resistance of a system and the survival rate of the microbial inoculum are improved, and when the microbial inoculum is applied to tomato and grape planting, obstacle soil conditions can be improved, crop growth indexes, stress resistance, yield and fruit quality can be improved, and the microbial inoculum is suitable for drought, saline-alkali and continuous cropping obstacle scenes.

This invention provides a method for soil improvement in edible mushroom cultivation bases, relating to the field of edible mushroom technology. The method specifically includes the following steps: S1. Laying peat moss; S2. Spreading biochar; S3. Spreading fermentation liquid; S4. Laying rice straw or wheat straw; S5. Evenly spreading adjuvants; S6. Applying at multiple points. This invention improves soil structure and nutrient distribution through multi-layered organic matter and gradient mineral addition, enhancing aeration and water retention. Simultaneous use of ultraviolet disinfection and biological bacterial liquid effectively kills harmful pathogens while rapidly restoring beneficial microorganisms. Regular spraying of photosynthetic bacteria liquid and biological enzyme liquid maintains a healthy soil ecosystem. Multi-point application of compound bacterial agents activates the soil microenvironment. pH adjustment ensures the soil remains in optimal condition, increasing the yield and quality of edible mushrooms. Biological barriers and triple spraying effectively prevent pests and diseases, reducing the use of chemical pesticides and ensuring environmental safety.

The invention discloses a root-fertilizer mutual feedback green fertilization method for increasing the yield of sugarcane and a fertilizer, and belongs to the technical field of sugarcane planting. Sugarcane is planted through the steps of field returning before planting, sugarcane fertilizer input optimization, mutual feedback planting, fertilization and the like, and meanwhile the problems that in the current sugarcane planting process, the fertilizer dosage is large, the proportion is not scientific, the cost is high, and the yield is low are solved through matching with a sugarcane compound fertilizer.

This invention belongs to the field of biodegradable plastics technology, and provides a biodegradable film, its preparation method, and its applications. The biodegradable film of this invention, based on 100 parts by weight of raw materials, includes 74-99.998 parts of biodegradable polyester; 0.001-15 parts of eucommia gum; 0-2 parts of compatibilizer; 0.001-2 parts of opening agent; 0-2 parts of coupling agent; 0-2 parts of dispersant; and 0-8 parts of color masterbatch. Using biodegradable polyester as the raw material and eucommia gum as the functional additive, this invention results in a biodegradable film with excellent UV aging resistance, mechanical properties, barrier properties, and processing performance; it can significantly extend the safe period of crop mulching and can adapt to different soil conditions and agricultural operations. The resulting biodegradable film is green and safe during processing and use, and can be used not only in agricultural mulch films but also in shopping bags, garbage bags, food packaging, vegetable greenhouse films, injection-molded sheets, and injection-molded plates.

The invention provides an organic-inorganic fertilization method for arched shed watermelons, and belongs to the technical field of watermelon planting.The organic-inorganic fertilization method comprises the steps that firstly, before the watermelons are transplanted, biogas slurry fertilizer, powder organic fertilizer, biological bacterial fertilizer, diammonium phosphate and A-type ternary compound fertilizer are sequentially applied, and then base fertilizer is formed; after the watermelons are transplanted, topdressing is conducted according to the growth stage of the watermelons, and in the vine extending stage, YM type compound microbial fertilizer and B type ternary compound fertilizer are sequentially applied to promote vine growth and expand the leaf area; in the young fruit stage, a YM type compound microbial fertilizer, a K type compound microbial fertilizer and a B type ternary compound fertilizer are sequentially applied, the root system absorption efficiency is enhanced, and sugar transportation is promoted; in the fruit swelling period, a YM type compound microbial fertilizer, an N type compound microbial fertilizer and a B type ternary compound fertilizer are sequentially applied to delay leaf senescence and guarantee continuous photosynthesis of leaves; wherein the YM type compound microbial fertilizer, the K type compound microbial fertilizer and the N type compound microbial fertilizer are biogas slurry fertilizers added with functional bacteria.