50results about How to "Improve aggregate structure" patented technology

The invention relates to a multifunctional soil conditioner for yellow sand soil and a preparation method thereof, and is characterized in that the soil conditioner is a granular fertilizer and comprises a core layer and a coating layer wrapping the core layer, and the mass ratio of the core layer to the coating layer is (3-5): (60-85); wherein the core layer is prepared from the following raw materials in parts by weight: 25 to 30 parts of ground phosphate rock, 15 to 25 parts of insoluble potassium mineral powder, 5 to 10 parts of humic acid and 15 to 20 parts of microbial agent; the component of the coating layer is modified sodium alginate. The modified sodium alginate outer envelope prepared by the invention has a uniform pore structure, and can store water, provide a microenvironment required by reproduction of beneficial microorganisms in soil, increase the content of the beneficial microorganisms in the soil and gradually decompose and release the phosphorus-potassium fertilizer.

The invention relates to bacillus velezensis and application thereof in preparation of a water-soluble microbial agent, and belongs to the technical field of microorganisms. The bacillus velezensis has the effects of producing exopolysaccharides, promoting the formation of soil aggregates, degrading abamectin, hydrolyzing protein, producing indoleacetic acid, promoting the growth of tomato plants and promoting the enzyme activity of tomato rhizosphere soil enzyme. The fertilizer not only has the effects of improving the soil aggregate structure and promoting the growth of tomato plants, but also can accelerate the temperature rise of the abamectin fermentation waste residue compost, prolong the high-temperature period and shorten the compost period, and is beneficial to promoting the harmless treatment and resource utilization of the abamectin fermentation waste residue.

According to the method, bacillus licheniformis bacterial liquid and calcium ion liquid are sequentially, slowly and evenly sprayed on the surface of a soil body, soil particles on the surface of a slope are cemented, a layer of calcium carbonate protection film is formed on the surface of the soil body, the anti-scouring capacity of the soil body can be effectively improved, flowing of the soil particles is reduced, and plant growth is protected; the adopted bacillus licheniformis can also increase the number of effective microbial communities in soil, improve the root system environment, promote plant growth, inhibit reproduction of harmful microorganisms, improve the granular structure of the soil, improve the soil, regulate the pH value of the soil, improve the water storage, energy storage and heat preservation of the soil, improve the disease resistance of crops and promote the maturity of plants; after vegetation grows, the effect of water and soil conservation can be improved, generated calcium carbonate can also bond soil particles, water and soil loss is reduced, bacillus licheniformis plays a dual role, multiple utilization of resources is achieved, and wide application prospects are achieved.

The invention provides a slow-release fertilizer for saline-alkali soil and a preparation method thereof, and the slow-release fertilizer comprises a granular core which is formed by co-granulation of a basic fertilizer composition and charcoal powder; the first coating layer is formed on the surface of the granular core by a mixture consisting of gamma-polyglutamic acid or a derivative thereof and sodium alginate; the second coating layer is formed on the surface of the first coating layer by sulfur; and the third coating layer is formed on the surface of the second coating layer by an anti-blocking agent. The slow-release fertilizer for the saline-alkali soil is strong in functionality and good in slow-release effect, improves the granular structure of soil, improves the utilization rate of water and fertilizer, synergistically reduces the pH of the saline-alkali soil, increases the content of nutrients and organic matters in the soil, promotes the growth and development of plants, and improves the micro-ecology of the soil.

The invention discloses a preparation method of a bentonite-containing composite material and an application of the bentonite-containing composite material in desertification control, and relates to the technical field of composite material preparation, the preparation method comprises the following specific steps: step 1, raw material preparation and pretreatment: selecting a high-purity bentonite mineral source as a basic material, and preparing a raw material; compared with the prior art, the preparation method has the advantages that bentonite, chitosan and other natural high-molecular polymers are synergistically compounded, and plant fibers are added for modification, so that multiple remarkable advantages are brought, firstly, chitosan has numerous active functional groups and can interact with the surface of bentonite and water molecules through hydrogen bonds, electrostatic interaction and the like, and the surface of bentonite can be modified; the plant fibers contain rich cellulose, the interlaced structure of the plant fibers can be embedded into a composite system, long-term effectiveness of the material in the desert environment is guaranteed when the material encounters external force, and moreover, chitosan can be converted into organic nutrients to nourish soil and continuously improve soil fertility after being degraded, so that the soil fertility is improved; the durability of the soil improvement effect is greatly improved.

The invention relates to a mudflat operation boat tractor, and belongs to the technical field of spartina alterniflora governance, the mudflat operation boat tractor comprises a boat tractor, the back of the boat tractor is provided with an anti-silting assembly, a mowing and crushing assembly, a rotary tillage assembly or a film mulching assembly, the anti-silting assembly is used for increasing the contact area of the contact surface of the boat tractor and the ground, the silting possibility of the boat tractor is reduced, and the mowing and crushing assembly is used for mowing and crushing the boat tractor. The mowing and crushing assembly is used for mowing the spartina alterniflora so as to reduce the height of the spartina alterniflora, the rotary tillage assembly is used for pressing the crushed spartina alterniflora into slurry and turning the slurry below a mud flat to a surface layer, and the film mulching assembly is used for laying an agricultural film to the spartina alterniflora so as to inhibit photosynthesis of the spartina alterniflora. The method has the effect of improving the spartina alterniflora treatment efficiency.

The invention discloses a slope cropland soil solidifying material based on agricultural waste and a preparation method thereof, and the slope cropland soil solidifying material is prepared from the following raw materials in parts by weight: 150-200 parts of a calcium lignosulphonate solution, 150-200 parts of a vinasse urease bacterium solution, 15-20 parts of phosphogypsum, 3-5 parts of urea, 2-3 parts of magnesium nitrate, 2-3 parts of calcium hydrophosphate and 2-3 parts of potassium carbonate. Wherein the calcium lignosulphonate solution is obtained by alkali treatment of corncobs, and the vinasse urease bacterial liquid is obtained by two-stage fermentation of corn vinasse with bacillus amyloliquefaciens and bacillus pasteurii. The prepared slope cropland soil solidification material can effectively utilize agricultural wastes, and can improve the soil structure and soil fertility and promote the growth of slope cropland plants while reducing water and soil loss.

The present application belongs to the technical field of biochar, and particularly relates to a high-activity acidolysis biochar, which is prepared by the following steps: S1, pretreating agricultural and livestock waste; S2, acidolysing the pretreated biomass with dilute acid to obtain acidolysed biomass; S3, placing the acidolysed biomass into a high-temperature furnace to perform carbonization under an oxygen-free condition, and using a step-by-step heating mode to obtain preliminary biochar; and S4, mixing the preliminary biochar with a copolymer solution to prepare the high-activity acidolysis biochar. In the present application, the sodium lignosulfonate-polyglutamic acid copolymer forms a stable connection with the biochar through chemical bonding, the porous surface of the biochar is uniformly covered with the copolymer to form a nanoscale film, the composite has stronger complexing, chelating and ion exchange capacity for heavy metal ions and other cations in the soil, and is helpful to reduce toxic substances in the soil and improve the soil environment.

This invention discloses a method for producing crop cultivation substrate using sugarcane filter mud and sugarcane pith as main raw materials, comprising the following steps: (1) dissolving and diluting 4,5-dihydro-4,5-dioxo-1H-pyrrolo[2,3-f]quinoline-2,7,9-tricarboxylic acid in water to obtain a solution; (2) mixing sugarcane slurry, sugarcane pith, the 4,5-dihydro-4,5-dioxo-1H-pyrrolo[2,3-f]quinoline-2,7,9-tricarboxylic acid solution, fermentation agent, and improver, adjusting the moisture content, and then composting and fermenting. The compost is turned over every few days and continuously composted and fermented for several days to obtain the crop cultivation substrate. The crop cultivation substrate produced by this invention is of excellent quality, allowing direct planting of plants without root burn. Therefore, this invention, using sugarcane filter mud and sugarcane pith as main raw materials to prepare and produce crop cultivation substrate, can effectively solve the problem of comprehensive utilization of sugarcane filter mud and improve product sales.

The invention relates to the technical field of fertilizer preparation, and particularly discloses a modified flotation phosphate tailing-based composite calcium magnesium phosphate fertilizer and a preparation method thereof, and the composite calcium magnesium phosphate fertilizer is prepared from modified flotation phosphate tailings, dolomite, limestone, an activator, a binder, a magnesium supplement conditioner and water. The flotation phosphate tailings are deeply modified by adopting a composite pretreatment liquid synergistic activation-gradient composite modification process, so that the effectiveness of nutrients such as phosphorus, calcium and magnesium in the flotation phosphate tailings and the environmental safety are remarkably improved; and through the raw material compounding design of calcium and magnesium source collaboration, gradient magnesium supplementation and conditioning synergism, quick-acting and long-acting collaborative supply of nutrients and a soil improvement function are realized. The flotation phosphate tailings are used as main raw materials, the technological process is simple, energy consumption is low, the prepared composite calcium magnesium phosphate fertilizer is balanced in nutrient, lasting in fertilizer efficiency and excellent in physical performance, and unification of solid waste recycling, product high value and production greenization is achieved.

The application discloses a kind of fulvic acid hydrogen peptide biological stimulant hormone fertilizer and preparation method thereof, belong to fertilizer technical field.Fertilizer is by 15~30 parts of fulvic acid, 5~12 parts of peony seed meal small molecule peptide, 20~35 parts of potassium dihydrogen phosphate and other components compound, water is made up to 100 parts, and auxiliary agent is emulsifier and chelating agent compound.Preparation first by dissolving fulvic acid, potassium phosphate in water and obtaining mixed solution, then adding small molecule peptide and auxiliary agent and stirring until the system is stable;Small molecule peptide is prepared by peony seed meal defatted powder crushing and enzymolysis, solves the problem of traditional fertilizer nutrient antagonism, unstable system, and the utilization of peony seed meal also improves resource utilization.Tomato, cucumber seedling test shows that it can significantly improve the growth index of crop root system and aboveground part, and the root-promoting and seedling-strengthening effect is better than that of similar fertilizer on the market, and the preparation process is simple, easy to industrialization, and has good agricultural application prospect.

The invention discloses a soil repair agent based on trace elements of coal gangue and a preparation method thereof, which belongs to the technical field of soil repair agents, and comprises the following steps: mixing dark fermentation strains with beneficial soil bacteria to obtain composite strains, coating the composite strains with starch, and then mixing with a bio-based foaming agent to obtain a composite foaming agent; mixing modified cellulose, a composite foaming agent, coal gangue powder and a gelling agent to obtain a hydrogel, and freeze-drying to obtain a loaded coal gangue particle aerogel; mixing the loaded coal gangue particle aerogel with trace elements, adding peat soil, lignite, vermiculite, and corn stalks for stirring, and drying and packaging to obtain a soil repair agent. The starch-encapsulated strains in the composite foaming agent have better stability and can be better propagated and developed in the soil; the encapsulated hydrogen-producing strains can better complete the dark fermentation reaction, increase the biohydrogen content in the soil, and restore soil fertility.

This invention discloses a compound mineral-plant growth promoter for agricultural soil improvement, its preparation method, and its application. The growth promoter is composed of 30-40 parts tourmaline powder (325-1250 mesh), 20-30 parts hexagonal stone powder, and 30-50 parts maifanite powder, and is activated by high-gradient electromagnetic resonance with a magnetic field gradient >10000 Gauss. This growth promoter integrates physical improvement, chemical conditioning, and biological promotion functions. After application to the soil, it effectively improves soil aggregate structure, bidirectionally regulates pH, and passivates heavy metal ions such as lead, cadmium, and mercury. Simultaneously, it continuously releases negative ions and far-infrared rays and slowly releases trace elements such as silicon, calcium, magnesium, iron, zinc, selenium, and germanium. Field trials show that this growth promoter can restore the pH of acidified soil to neutral, increase crop yield by 10-20%, and reduce heavy metal residues by 40-60%. The raw materials are natural, the process is simple, and it is suitable for improving acidified, saline-alkali, and continuously cropping-impaired soils, and for enhancing crop quality and efficiency.

The invention discloses an amino acid water-soluble fertilizer and a production process thereof. The amino acid water-soluble fertilizer comprises the following components in parts by weight: 12-30 parts of nitrogen, 5-18 parts of phosphorus, 5-15 parts of potassium, 0.1-6 parts of sulfur, 20-24 parts of potassium fulvate, 6-8 parts of humic acid, 8-10 parts of amino acid, 0.1-0.5 part of a nitrification inhibitor, 0.01-0.2 part of trace elements and 200-300 parts of water. The amino acid and fulvic acid are doubly chelated with medium trace elements, the humic acid is used as a masking agent to produce the medium trace element chelate, the prepared amino acid water-soluble fertilizer is high in element utilization rate and can be degraded in the natural environment, meanwhile, the mixing efficiency of raw materials in the production process is high, and the production cost is low. Raw material agglomeration and non-uniform stirring caused by directly adding the potassium fulvate, the humic acid and the amino acid into the tank body are avoided.

The present invention discloses a fungal biofertilizer and application for promoting rice growth, and belongs to the technical field of agricultural fertilizers. The present invention provides a fungal biofertilizer and application for promoting rice growth. The fermentation of Curvularia spp. and the preparation of Curvularia spp. lysates can be performed to inoculate rice without using the fertilizers needed for planting, thereby improving the soil aggregate structure and making the soil nutrients better absorbed by rice. The Curvularia spp. biofertilizer enhances the strength of the rice base stem and improves the rice's lodging resistance. On the other hand, the roots are made strong, the taproot develops strongly in the seedling stage, and the root hairs are less, so that the nutrients are concentrated on the longitudinal growth of rice. The inoculated rice can be used without using the fertilizers needed for planting, and the growth cycle of rice is advanced. The aboveground and underground biomass of rice inoculated with the Curvularia spp. biofertilizer increases, the leaves become wider, and the leaf color deepens, which also has a positive effect on the growth of rice seedling leaves and roots.

This invention provides a composite biosynergist, its preparation method, and its application. The composite biosynergist is composed of polyglutamic acid, humic acid, fucoidan oligosaccharide, and plant polyphenols. The synergistic effect of the active substances polyglutamic acid γ-PGA, humic acid HA, fucoidan oligosaccharide AOS, and plant polyphenol PP in the composite biosynergist is essentially manifested in microscopic-scale functional complementarity and mechanism closed-loop. It achieves four functional pathways: blocking salt toxicity through chelate channels, ensuring nutrient supply through complexation channels, enhancing nutrient absorption through root-promoting channels, and resisting stress damage through stress-resistant channels. Ultimately, it achieves the macroscopic effect of "improved soil physicochemical properties—enhanced root function—increased crop stress resistance and yield." Its core advantage lies in overcoming the functional limitations of single components and solving the industry pain points of "difficult-to-eliminate salt damage, easy nutrient loss, and unstable improvement effect" in saline-alkali land improvement through molecular-level synergistic effects.

The present invention relates to the technical field of soil improvement, and in particular to a supporting machine for deep loosening and application of a carbon-based soil conditioner and a white pulp soil improvement method, wherein the supporting machine for deep loosening and application of a carbon-based soil conditioner comprises: a bearing shell, a deep loosening and turning device, a shovel board and a crushing and mixing module; the bearing shell can be detachably assembled on an external transport vehicle; the deep loosening and turning module can be detachably assembled on the transport vehicle, and is used to turn out the cultivated soil to be improved to the surface; the crushing and mixing module is arranged on the bearing shell, and is used to mix the cultivated soil and the soil conditioner; the shovel board is fixedly arranged on the bearing shell, the input end of the shovel board is connected to the surface, the output end of the shovel board is connected to the crushing and mixing module, and the shovel board is located between the deep loosening and turning module and the crushing and mixing module, and is used to transport cultivated soil. The first embodiment of the present invention solves the defect of poor soil improvement effect existing in the prior art, and has the advantages of good soil improvement effect and high energy utilization rate.

The invention provides a special organic fertilizer for dendrocalamus brandisii and a preparation method thereof, and belongs to the technical field of organic fertilizers. The special organic fertilizer for dendrocalamus brandisii provided by the invention is prepared by taking the tobacco stem powder, the fish protein, the turf and the animal waste as main raw materials and fully fermenting and decomposing by utilizing zymophyte microorganisms, is rich in humic acid and various beneficial microorganisms, can increase soil organic matters and microbial populations after being applied, and can improve soil and increase the utilization rate of the fertilizer; the fertilizer has the remarkable effects of saving cost, improving efficiency and improving plant quality, is an ideal fertilizer for planting high-quality dendrocalamus brandisii, and humic acid contained in the fertilizer has high ion exchange capacity and adsorption capacity, so that soil salt damage can be relieved, volatilization loss of nitrogen is reduced, and the nitrogen absorption rate is remarkably increased.

The invention is applied to the technical field of soil amendments, and discloses a soil amendment for long-acting inhibition of plant diseases and insect pests, and the soil amendment comprises the following components in parts by mass: 1-2 parts of a slow-release composite bacteriostatic agent, 0.3-0.5 part of a protective agent and 10-15 parts of a bearing substrate, a bacteriostatic material in the slow-release composite bacteriostatic agent is one of imidazolidinyl urea and bis (hydroxymethyl) imidazolidinyl urea. According to the soil conditioner capable of inhibiting diseases and insect pests for a long time, a mode of mixing the bacteriostatic agent with the ion exchange resin is adopted, so that the bacteriostatic agent can be slowly released after being fully mixed with soil, and the soil can obtain continuous bacteriostatic and insect pest-resistant effects after being improved; meanwhile, the soil conditioner can prevent common mites and fungal diseases through the protective agent composed of the christomycin and the deionized water, and the soil conditioner can be mixed with soil and cannot be consumed too fast in the mode that the slow-release composite bacteriostatic agent and the protective agent are loaded and put through the bearing matrix.

The invention belongs to the technical field of planting and maintaining, and particularly relates to nanmu planting and maintaining equipment and a working method. The nanmu planting and maintaining equipment comprises a vibration collecting device and a harvester body, the harvester body comprises a moving trolley, and staggered annular blades are arranged on the outer ring faces of a first smashing wheel and a second smashing wheel; therefore, the weeds and eggs carried by the weeds can be crushed during rotation and fall into the soil broken by the soil breaking block through the discharge port formed in the protective shell, so that the propagation risk of the eggs can be remarkably reduced, the threat of diseases and insect pests to crops is reduced, and meanwhile, the yield of the crops is improved. A piston piece moves along the guide of a fixed rectangular block of an inner cavity of a piston barrel, and at the moment, available nutrients such as liquid nitrogen stored between the piston piece and the piston barrel can be extruded to crushed weeds between a first crushing wheel and a second crushing wheel, so that a sufficient nitrogen source is provided for microorganisms, and the decomposition of the weeds is further promoted; further, the fertility and the structure of the soil can be improved.

This invention discloses a green and ecological planting method for daylilies, belonging to the field of agricultural planting technology. It addresses the technical problems of excessive reliance on chemical fertilizers and traditional mulching in current daylily cultivation, leading to soil ecological imbalance and low fertilizer utilization. The method includes: applying organic fertilizer made from cow and sheep manure and Asteraceae plant residues through aerobic composting, using a layered strip application method. First, fully decomposed organic fertilizer is applied as a base fertilizer layer in the planting furrow, followed by semi-decomposed organic fertilizer that has completed the main fermentation stage but not the later aging stage as a middle layer fertilizer; after land preparation and ridging, wood ash is spread on the ridge surface, followed by the laying of black fully biodegradable mulch film; finally, holes are made in the mulch film for daylily seedling planting. This method is mainly used for sustainable ecological planting of daylilies, improving soil fertility and structure, regulating soil pH and providing potassium, conserving moisture and suppressing weeds while avoiding residual pollution, thereby increasing daylily yield and quality while reducing environmental impact.

The present invention relates to a strain of Pseudomonas fluorescens that can degrade shells and produce chitinase at low temperature. The classification name of Pseudomonas fluorescens is Pseudomonasfluorescens. The preservation institution of Pseudomonas fluorescens is the General Microbiological Center of the China Microbiological Culture Collection Administration Committee, with a preservation number of CGMCCNo.26060 and a preservation date of November 7, 2022. The present invention collects low-temperature beach soil in the Northeast region, enriches low-temperature culture, and screens microbial strains that efficiently degrade chitin polysaccharides at low temperatures. Efficient chitinase can be produced at low temperatures (15°C), which can be used for the decomposition of chitinous organic materials in low-temperature and cool areas in the Northeast. The chitin polysaccharides are degraded by low-temperature fermentation of the above-mentioned bacterial agent, and the soil aggregate structure is improved after returning to the field, creating a beneficial bacterial advantage, promoting the formation of soil aggregate structure, greatly improving the soil micro-ecological system, enhancing soil permeability, and improving the soil water and fertilizer retention capacity.

The invention discloses a full-biomass transparent liquid mulching film with photo-thermal conversion performance and a preparation method and application thereof, the liquid mulching film comprises the following components in parts by weight: 2-4 parts of lignin-containing nanocellulose, 1-2 parts of a biomass cross-linking agent, 25-30 parts of a biomass plasticizer and 65-70 parts of gelatin, the lignin-containing nanocellulose is nanocellulose with residual lignin obtained by performing lignocellulose refining treatment on corn straws. The liquid mulching film disclosed by the invention realizes full-biomass configuration, has excellent photo-thermal conversion performance, has extremely high application potential in high-altitude areas, and can effectively meet the photo-thermal conversion requirements under strong ultraviolet irradiation and low-temperature environments.

The application belongs to the technical field of soil conditioner preparation, and particularly relates to a method for producing soil conditioner by using high-phosphorus and high-magnesium floatation phosphorus tailings and an electric furnace method, wherein the method for producing soil conditioner by using high-phosphorus and high-magnesium floatation phosphorus tailings and the electric furnace method are developed, the powder ore can be made into pellets, and the utilization rate of the powder ore is improved; high-temperature melting is used to realize efficient activation of phosphorus, magnesium, calcium, silicon and other nutrient elements in the tailings, and a soil conditioner product capable of supplementing trace elements and improving soil aggregate structure is prepared, which not only can realize high-value utilization of the phosphorus tailings, effectively solve the soil acidification treatment demand, and has important practical significance for promoting resource utilization of the phosphorus tailings.

The invention discloses a preparation method and application of a fertilizer for promoting plant chlorophyll synthesis. The invention belongs to the technical field of fertilizers, and provides macroelements, microelements and organic substances required for synthesizing chlorophyll from plants through a scientific and reasonable formula, so as to provide sufficient energy for the growth and development of the plants; the humic acid and other organic substances can increase the organic matter content of soil, improve the granular structure of the soil and improve the water and fertilizer retention capacity of the soil. Soil erosion is reduced, water and soil loss is prevented, and a good soil environment is created for plant growth; the trace elements exist in a chelated state, are high in stability and are not easily fixed by soil, the absorption and utilization rate of plants to the trace elements can be improved, and physiological diseases caused by lack of the trace elements are reduced; the fertilizer is suitable for various crops, flowers, fruit trees and other plants, and has wide applicability.

The present invention provides a soil conditioner for soil acidification control and its preparation and application. The preparation method of the soil conditioner is as follows: S1, prepare AEB nanocomposite material, specifically as follows: first prepare modified nano carbon black: specifically, modify nano carbon black to obtain carboxyl modified nano carbon black; then prepare nano lignin solution: mix nano lignin, ethanol and water, and stir well to obtain; finally, add attapulgite and the prepared modified nano carbon black to the prepared nano lignin solution, stir well and ultrasonically treat, and then dry and grind to obtain AEB nanocomposite material; S2, mix the AEB nanocomposite material with dolomite powder in proportion to obtain. The soil conditioner prepared by the present invention has a fast onset of action and a high soil pH buffering capacity. It can fundamentally and comprehensively control acidified soil, and is not prone to re-acidification and soil compaction. The yield-increasing effect is more significant when combined with the application of organic fertilizer.

The invention discloses a fertilizer internal additive using fly ash as a raw material and a preparation method thereof, and relates to the technical field of fertilizer internal additives, the fertilizer internal additive comprises the following raw materials by weight: 15-25 parts of fly ash, 5-15 parts of starch, 0.3-0.6 part of an initiator, 0.05-0.2 part of a cross-linking agent, 35-60 parts of acrylic acid, 2.5-5 parts of a dispersant, and 40-60 parts of deionized water. According to the fertilizer internal additive taking the fly ash as the raw material and the preparation method of the fertilizer internal additive, the fly ash is pretreated, so that acid soil can be neutralized to a certain extent, and the pH value of the soil is more suitable for crop growth; the treated fly ash is helpful for soil particles to form a good aggregate structure, and the porosity of the soil is increased, so that water and fertilizer can be better preserved, and plant roots can better breathe and grow.

This invention relates to the field of waste utilization and organic fertilizer preparation technology, specifically to a high-carbon, low-nitrogen organic fertilizer prepared from bayberry branches and its preparation method. The organic fertilizer raw materials, by weight, include: 80-150 parts of crushed bayberry branches, 3-5 parts of a nitrogen source, 0.15-0.2 parts of a compound microbial agent, and 0.1-0.15 parts of auxiliary materials; the nitrogen source is one or a combination of manure and urea; the compound microbial agent is selected from one or a combination of lignin-degrading bacteria, nitrogen-fixing bacteria, cellulose-decomposing bacteria, and phosphorus- and potassium-solubilizing bacteria; the auxiliary material is a mixture of lime and gypsum. The carbon-to-nitrogen ratio of the mixed raw materials is 45-70:1. This invention enables the resource recycling of bayberry branches, producing high-quality, high-efficiency organic fertilizer that is well-suited to the growth characteristics of bayberry cultivation, which requires strict nitrogen control. It can effectively reduce the fruit drop rate, improve fruit flavor, and enhance sweetness and quality. Furthermore, this invention can sustainably improve soil fertility, maintain soil microbial community stability, and create a favorable environment for bayberry root growth.

The present invention belongs to the technical field of liquid fertilizers, and specifically relates to an organic suspension fertilizer and a preparation method and application thereof. The organic suspension fertilizer provided by the present invention uses materials containing organic matter, humic acid, citric acid, amino acids and auxiliary agents as raw materials, and the materials containing organic matter include peanut bran and molasses concentrated waste liquid; the auxiliary agents include suspending agents and antibacterial agents. The humic acid and molasses waste liquid in the raw materials of the present invention both have good water solubility. By controlling the composition and dosage of the raw materials, the problems of difficult disintegration, low utilization rate and serious wind loss of traditional organic fertilizers are overcome. The organic slurry has good dispersibility in water, is easy to apply evenly, and is in full contact with the soil, which can improve the soil aggregate structure to the greatest extent. The nutrients of the organic suspension fertilizer provided by the present invention can be evenly absorbed by crops, and there is no uneven nutrient application. In addition, low-cost waste that is not fully water-soluble is used as the source of organic matter, which saves costs and is conducive to resource recycling.

The application discloses a sweet potato cultivation method for improving commercial rate of sweet potato by using condensed ring polyphenol and relates to the technical field of agricultural planting. The method is as follows: a condensed ring polyphenol solution is taken and diluted; when sweet potato seedlings are transplanted, a sweet potato nest is first opened, and the condensed ring polyphenol diluent is poured into the sweet potato nest; after the sweet potato seedling is inserted, the soil is covered and covered tightly. Further, the method can further include: the condensed ring polyphenol diluent is uniformly sprayed during the growth of stems and leaves of the sweet potato. It is proved by experiments that the condensed ring polyphenol diluent used in the application can play a role in regulating the growth of the sweet potato. Specifically, by using the condensed ring polyphenol diluent to pour the nest or to pour the nest and spray, the sweet potato seedling can be early rooted and early reseeded, and the survival rate is improved; the above-mentioned method can also promote the rapid growth of stems and leaves on the ground, increase the number of leaves, the number of branches and the fresh weight, and has a remarkable yield-increasing effect on the number of tubers, the fresh tuber yield and the drying rate.