286 results about "Seaweed extract" patented technology

The invention discloses a polymeric phosphorus slow-release compound fertilizer and a preparation method thereof, and relates to the technical field of agricultural fertilizers, the polymeric phosphorus slow-release compound fertilizer comprises an inner core and a coating layer, wherein the inner core is prepared from the following components in percentage by weight: 30 to 50 percent of modified ammonium polyphosphate, 15 to 25 percent of urea-formaldehyde slow-release nitrogen, 10 to 20 percent of potassium humate-coated potassium chloride, 2 to 5 percent of amino acid chelated trace elements and 1 to 3 percent of seaweed extract; through the synergistic effect of the citric acid modified ammonium polyphosphate and the three layers of functional envelopes, the phosphorus utilization rate is increased, and the problem that phosphorus is easily fixed by soil is effectively solved. The fertilizer can automatically adapt to different soil environments through the pH responsive coating design, and 30-40% of phosphorus can be quickly released in acid soil to meet the early needs of crops; phosphorus is continuously supplied through activation of the phosphate solubilizing bacteria under a neutral condition; and the fertilizer efficiency is prolonged to 120-150 days by virtue of an outer layer slow release mechanism in an alkaline environment.

The invention provides an anti-premature senility management method for closely-planted double-layer truncated cone macadamia nut trees, and belongs to the technical field of fruit tree cultivation. The premature senility prevention management method comprises layered nutrition supply and flower and fruit protection management. The layered nutrition supply comprises the following steps: deeply applying a calcium magnesium phosphate fertilizer to the lower layer of soil greater than 60cm, and covering a root controller; organic fertilizers and biological agents are applied to 30-60 cm soil of the middle layer; a macroelement, humic acid and seaweed extract water-soluble fertilizer is applied to the 0-30 cm soil of the upper layer; the flower and fruit protection management comprises the steps that ABA and paclobutrazol are sprayed in the flower bud differentiation period; brassinolide and fluid boron are sprayed in the full-bloom stage; spraying forchlorfenuron and amino acid in a young fruit stage; nAA and monopotassium phosphate are sprayed in the fruit swelling period. Layered nutrition supply and flower and fruit protection management are carried out on the densely-planted double-layer truncated cone macadamia nut trees, premature senility of the densely-planted macadamia nut trees is prevented, branch development of the lower layer is promoted, the tree vigor is balanced, and the high-yield level is maintained.

The invention relates to the technical field of agricultural fertilizers, discloses a seaweed extract-functional microorganism compound slow-release fertilizer and a preparation method thereof, and solves the problems in the background art. The seaweed extract is a compound containing enteromorpha polysaccharide and alginic acid extract; the functional microorganism is a complex microbial inoculant composed of phosphate solubilizing bacteria, nitrogen-fixing bacteria, phosphate solubilizing bacteria and bacillus; the slow-release carrier is prepared by coating the seaweed extract and the functional microorganisms with sodium alginate-chitosan microcapsules; the signal molecule is selected from at least one of polyamine substances and jasmonic acid methyl ester; the fertilizer has the advantages that the utilization rate of the fertilizer can be increased, growth and reproduction of soil microorganisms are promoted, the stress resistance of crops is improved, and the requirements of different soil types and planting environments can be met.

The invention relates to the technical field of microbial agents, in particular to a composite microbial agent and application of the composite microbial agent in prevention and treatment of forest root diseases, and the composite microbial agent comprises the following components in parts by weight: 15-25 parts of Trichoderma harzianum ATCC 20847; 10 to 20 parts of bacillus subtilis ATCC 605, 10 to 20 parts of bacillus subtilis ATCC 605, 10 to 20 parts of bacillus subtilis ATCC 606 and 10 to 20 parts of bacillus subtilis ATCC 607. 5-10 parts of a seaweed extract; 3 to 8 parts of chitosan; 2-5 parts of humic acid; 1 to 3 parts of glycine betaine; 0.5 to 1.5 parts of a trace element compound; 30 to 40 parts of perlite powder; according to the present invention, the fertilizer has characteristics of significant inhibition effect on a variety of forest root pathogenic bacteria, wide prevention and control spectrum, and long-term and stable disease prevention effect by adjusting the rhizosphere micro-ecosystem. Diseases are prevented and controlled, and the growth and root development of the forest trees are remarkably promoted.

The invention relates to the technical field of fertilizers, in particular to an environment-friendly water-soluble fertilizer containing a seaweed extract and polyglutamic acid. The water-soluble fertilizer is prepared by preparing seaweed oligosaccharide and double-grafted poly-L-gamma-sodium glutamate and compounding and complexing the seaweed oligosaccharide and the double-grafted poly-L-gamma-sodium glutamate, has the characteristics of low salting-out, high stability, no precipitation, good slow release performance and the like, and can continuously release nutrients and keep a solution clear and transparent under a low-salt condition; and because the polyglutamic acid and seaweed extract compound drip irrigation agent has the chelation and water retention characteristics of the polyglutamic acid and the natural growth promoting effect of the seaweed extract, the crop rhizosphere nutrient absorption efficiency and stress resistance are remarkably improved, the compound drip irrigation agent is suitable for drip irrigation and water and fertilizer integrated application of greenhouse vegetables, fruit trees and field crops, and the comprehensive effects of high efficiency, low salt load and environment friendliness are achieved.

The invention discloses a coated slow-release solid water-soluble fertilizer as well as a preparation method and application thereof. The coated slow-release solid water-soluble fertilizer comprises the following components in parts by weight: 15-20 parts of a nitrogen source, 8-12 parts of a phosphorus source, 15-25 parts of a potassium source, 3-8 parts of humic acid and 10-15 parts of charcoal powder, the composite material comprises the following components in parts by weight: 0.5-1.5 parts of functional microorganisms, 1-2 parts of microbial metabolite, 2-5 parts of seaweed extract and 5-8 parts of chitosan-gelatin composite material. The functional microorganisms are bacillus subtilis, bacillus licheniformis and azospirillum which are adsorbed on the charcoal powder. The coated slow-release solid water-soluble fertilizer provided by the invention has the effects of supplying nutrients and preventing and treating soil-borne diseases, achieves multiple effects by one fertilizer, and can improve the crop nutrient utilization rate, inhibit the soil-borne diseases and promote the diversity of soil microorganisms.

The invention relates to the technical field of ecological restoration, in particular to an ecological restoration composite material and a preparation method thereof. Comprising a base material: 30-70 parts of a natural polymer material or a degradable synthetic polymer material; reinforced fibers: 5-40 parts of natural fibers or degradable synthetic fibers; a functional additive: 10-40 parts of at least one of a water-retaining agent, an organic fertilizer, a microbial carrier and a soil conditioner; a plant growth promoter: 1-15 parts of humic acid, a seaweed extract, a trace element fertilizer or an antagonistic antibacterial agent; a binder: 0 to 15 parts of a degradable polymer binder; and 5-15 parts by weight of water. According to the invention, the biodegradability of the material is ensured, the mechanical strength is improved and the overall performance of the composite material is enhanced by optimizing the combination of base materials, pretreating the reinforced fibers, achieving the synergistic effect of the multifunctional additive and efficiently loading the plant growth promoter; the ecological restoration composite material provides long-term support for plant growth.

The invention provides a microbial agent type bio-organic fertilizer capable of improving continuous cropping tobacco planting soil hardening and a preparation method of the microbial agent type bio-organic fertilizer, and belongs to the technical field of organic fertilizers. The microbial agent type bio-organic fertilizer capable of improving continuous cropping tobacco planting soil hardening comprises the following raw materials: an organic material, a microbial agent, an inorganic nutritional ingredient, vinasse and an additive, wherein the organic material is composed of livestock and poultry manure, crop straw, tobacco waste and a fermentation inoculant; the additive is prepared from humic acid, seaweed extract and amino acid. The organic fertilizer contains rich organic materials and humic acid, the content of organic matters in soil can be increased, the granular structure of the soil can be improved, the growth of soil-borne pathogenic bacteria can be inhibited by the added multiple beneficial microorganisms, the micro-ecological environment of the soil can be improved by the photosynthetic bacteria, and the incidence rate of diseases such as tobacco black shank and bacterial wilt can be reduced.

The invention discloses a special slow-release compound fertilizer for corn and a preparation method thereof, the special slow-release compound fertilizer comprises the following raw materials by weight: 30-40 parts of urea, 15-20 parts of ammonium sulfate, 20-25 parts of potassium sulfate, 15-25 parts of monoammonium phosphate, 2-3 parts of a seaweed extract, 0.5-1.5 parts of polyaspartic acid, 0.5-1.5 parts of trace elements, and 0.5-1 part of a slow-release agent, the slow-release agent comprises DMPP, the trace elements comprise zinc-boron-titanium citrate, and the slow-release agent comprises potassium sulfate, potassium sulfate, potassium sulfate, monoammonium phosphate, polyaspartic acid, zinc-boron-titanium citrate. The seaweed extract comprises chitosan. DMMP is added into the formula, so that stable supply of nitrogen and synergistic yield increase benefits are achieved; the chitosan, the titanium zinc borate citrate and the polyaspartic acid are added, so that the absorption efficiency of the root system is further improved, the robust growth of corn plants is promoted together, and the acre yield and the grain quality of the corn are effectively improved.

The invention discloses a seed pelleting formula for improving salt tolerance of suaeda salsa in coastal saline-alkali soil and a processing method, the pelleting formula comprises 348-492 parts of a filler, 348-492 parts of a binder, 348-492 parts of a water-retaining agent and 348-492 parts of a biological stimulant, and the filler comprises attapulgite, talcum powder and vermiculite; the binder is 73-89 parts and comprises sodium carboxymethyl cellulose, polyvinyl alcohol and starch; the water-retaining agent accounts for 30 to 42 parts, and the water-retaining agent is polyacrylamide; the biological stimulant is prepared from the following components in parts by weight: 20-78 parts of yeast metabolite, potassium fulvate, seaweed essence, rhamnolipid and a microbial agent; the processing method comprises the steps of seed selection, raw material preparation, layered coating, low-temperature drying, selection and sieving, and polishing and shaping. According to the invention, a layered coating process is adopted to break through a traditional single mixed coating mode, an isolation breathable microenvironment is firstly constructed by the filling layer, then growth-promoting stress-resistant nutrient substances are injected by the active layer, and finally, the shaping layer is used for locking and shaping and strengthening protection, so that the seeding performance, salt tolerance, germination activity and seedling stress resistance of the pellets are remarkably improved.

The invention provides a microbial agent compound fertilizer for sandy land and a preparation method thereof, and relates to the technical field of compound fertilizers. The invention relates to a microbial inoculum compound fertilizer for sandy land. The soil conditioner is prepared from the following raw materials in parts by mass: 40 to 60 parts of compost, 0.3 to 0.8 part of nitrogen-fixing bacteria, 0.3 to 0.8 part of phosphate solubilizing bacteria, 0.3 to 0.8 part of potassium bacteria, 8 to 12 parts of charcoal, 8 to 12 parts of zeolite, 9 to 13 parts of perlite, 4 to 6 parts of vermiculite, 1 to 3 parts of seaweed extract, 2 to 4 parts of humic acid, 1 to 7 parts of waste cellulose nanocrystals, 30 to 40 parts of insect debris, 0.3 to 3 parts of nano carbon dots, 3 to 9 parts of lime and 8 to 15 parts of wood fiber. The compound fertilizer disclosed by the invention not only is rich in various necessary nutrient elements, but also has a good slow release effect and a good soil improvement function, can effectively improve soil fertility and promote plant growth through the action of various biological strains, and also has the characteristics of environmental protection and no pollution by utilizing the waste cellulose nanocrystals and the insect remains.

The invention discloses a high-water-permeability potato virus-free breeder's seed efficient breeding substrate and a preparation method thereof, and relates to the technical field of agricultural cultivation. The soil conditioner is prepared from the following raw materials in parts by mass: 25-35 parts of modified coco coir, 10-15 parts of blast furnace slag, 15-20 parts of perlite, 15-20 parts of nano diatomite, 10-15 parts of straw charcoal, 3-5 parts of a polyacrylamide water-retaining agent, 1-2 parts of a compound microbial agent, 5-8 parts of tourmaline powder, 8-12 parts of attapulgite, 5-10 parts of desulfurized gypsum, 10-16 parts of vermiculite, 1-2 parts of a seaweed extract and 5-8 parts of nano zeolite. Through gradient design of the particle size of the slag, the pH value of the soil can be effectively adjusted, the resistance of the soil to acid rain can be remarkably enhanced, and the slag with different particle sizes can gradually release minerals such as calcium and magnesium, so that the stability of the pH value of the soil is maintained, and favorable conditions are provided for healthy growth of plants.

The invention relates to the technical field of fertilizers, in particular to a seaweed-containing synergistic monoammonium phosphate fertilizer as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a seaweed extract with beta-cyclodextrin, performing microencapsulation, and performing spray drying to obtain an embedded material; mixing with monoammonium phosphate and polyglutamic acid, and granulating; spraying salt-resistant compound bacteria liquid on the surfaces of the particles; and finally, coating the particles with a chitosan-sodium alginate composite film. According to the prepared synergistic monoammonium phosphate fertilizer finished product, the phosphorus utilization rate of monoammonium phosphate saline-alkali soil can be increased, the phosphorus fixation rate can be greatly reduced, the retention rate of active ingredients of the seaweed extract is greatly increased compared with that in the prior art, the rhizosphere survival rate of salt-tolerant flora is greatly increased, and the salt-tolerant flora, the seaweed extract and monoammonium phosphate cooperate to promote crop yield increase.

The invention relates to the technical field of fertilizer preparation, in particular to a farmland drought-resisting and water-retaining multifunctional green fertilizer and a preparation method thereof. The farmland drought-resisting and water-retaining multifunctional green fertilizer is prepared from the following components in parts by mass: 40-60 parts of mushroom dregs, 10-20 parts of konjac glucomannan residues, 3-5 parts of a water-retaining agent, 11-15 parts of an NPK compound fertilizer, 4-6 parts of trace elements, 0.4-0.6 part of a fermentation inoculant, 1-2 parts of wormcast, 1-2 parts of humic acid and 0.6-0.8 part of a seaweed extract. The prepared fertilizer can significantly improve the physical structure of soil, enhance the water retention capacity of the soil, promote the growth and development of crop roots, and further improve the drought resistance of crops. In addition, the application of the fertilizer is helpful for reducing the use amount of chemical fertilizers, so that the sustainable development of ecological agriculture is promoted.

The invention relates to the technical field of organic fertilizers, in particular to an alginic acid organic fertilizer and a preparation method thereof.The alginic acid organic fertilizer is prepared from 450-550 g / L of seaweed extract, 80-110 g / L of free amino acid, 80-110 g / L of nitrogen (N), 80-110 g / L of phosphorus (P2O5), 80-110 g / L of potassium (K2O), 40-60 g / L of microbial agent and microelements, and the alginic acid organic fertilizer can effectively improve the yield and quality of strawberries. According to the preparation method, complex instruments and equipment and special reaction conditions are not needed in the preparation process of the alginic acid organic fertilizer, large-scale production is easy, the production cost is reduced, the production efficiency is improved, and popularization and application of the product in the market are facilitated.

The invention discloses a special organic fertilizer for soybeans and a preparation method thereof, and belongs to the technical field of organic fertilizers. The special organic fertilizer for soybeans is prepared from the following raw materials in parts by weight: 8-10 parts of fish protein modified charcoal, 40-50 parts of decomposed soybean meal, 20-25 parts of decomposed livestock and poultry manure, 15-20 parts of humic acid, 10-15 parts of plant ash, 3-5 parts of a seaweed extract and 0.1-0.3 part of ammonium molybdate. According to the organic fertilizer, the soybean meal fermented by the trichoderma reesei and the aspergillus awamori and the fish protein modified biochar are added, the two components are compounded with the cooked livestock and poultry manure, the humic acid, the plant ash, the seaweed extract and the ammonium molybdate to form the organic fertilizer, the nitrogen fixation capacity of the soybeans is effectively improved through the synergistic effect of various substances, and the growth and development of the soybeans are remarkably promoted; the soybean yield and quality are improved. In addition, the whole organic fertilizer preparation process is free of strong acid and strong alkali treatment, the environmental pollution risk is reduced, and the standard of organic agriculture is met.

The invention provides a special seedling-stage fertilizer for improving crop drought resistance and promoting growth and a preparation method thereof, and belongs to the technical field of fertilizers. The special fertilizer for the seedling stage comprises the following components in parts by mass: 60-100 parts of a compound fertilizer, 5-15 parts of a water pteris vittata extract, 5-10 parts of a seaweed extract, 3-7 parts of a compound microbial agent, 2-6 parts of proline, 0.1-0.3 part of calcium lignosulphonate and 0.1-0.3 part of tetrasodium glutamate diacetate. The special fertilizer for the seedling stage is suitable for various crops such as corn, soybeans, wheat, flax and sorghum, and the drought resistance and the biological accumulation amount of crop seedlings can be remarkably improved. The invention provides a simple, convenient, economical and effective solution for drought-resistant cultivation of crops, and has a better market application prospect.

The invention relates to the technical field of textile fabrics, in particular to a moisture-absorption breathable polyester and chinlon composite fiber and a preparation method thereof. The invention relates to a moisture-absorbing breathable polyester and chinlon composite fiber, which is a skin-core composite fiber, takes moisture-conducting polyester fiber as a skin layer, and takes water-absorbing modified chinlon fiber as a core layer, the moisture-conducting polyester fibers are prepared from the following components in parts by weight: 68 to 75 parts of superfine denier polyester filaments, 12 to 16 parts of seaweed extract powder, 4 to 6 parts of lyocell fibers and 5 to 11 parts of a moisture-conducting auxiliary agent; the moisture conducting auxiliary agent comprises cellulose nano fibrils, nano bamboo charcoal powder and sericin. Aiming at the problem that the moisture absorption and air permeability of the existing polyester-nylon composite fiber are difficult to meet higher industrialization requirements, the moisture absorption and air permeability type polyester-nylon composite fiber with high water absorption rate, short drip diffusion time and water evaporation speed is prepared.

The invention relates to the technical field of soil improvement, and particularly discloses a soil conditioner based on microbial community regulation and control and a preparation method thereof, the soil conditioner comprises: (a) a composite functional flora comprising nitrogen-fixing bacteria, phosphate solubilizing bacteria, potassium-dissolving actinomycetes and trichoderma, and the viable count ratio of the nitrogen-fixing bacteria to the phosphate solubilizing bacteria to the potassium-dissolving actinomycetes to the trichoderma is (1.0-1.5): (0.8-1.2): (0.5-1.0): (0.3-0.8); b) modified biochar carrier: the modified biochar carrier is prepared by oxygen-limited thermal cracking of agricultural wastes and is subjected to surface modification by a chitosan solution with a mass fraction of 3-5%; (c) a synergistic component which comprises humic acid particles and an enzymolysis seaweed extract; (d) a flora activator: compounding fructo-oligosaccharide and L-aspartic acid according to a mass ratio of 2: 1; through the synergistic effect of multifunctional composite flora of nitrogen-fixing bacteria, phosphate-solubilizing bacteria, potassium-solubilizing actinomycetes and trichoderma, the biotransformation process of nitrogen, phosphorus and potassium elements in soil is synchronously activated, and the modified charcoal carrier is subjected to multi-stage pyrolysis and chitosan modification to form a graded pore structure.

The invention relates to the field of soil remediation, and particularly discloses a fertilizer synergist with a soil remediation effect and a preparation method of the fertilizer synergist. The invention discloses a fertilizer synergist with a soil remediation effect. The fertilizer synergist comprises the following raw materials in percentage by weight: 30-50% of an organic matter modifier, 5-10% of a microelement chelating agent, 10-20% of a biostimulant, 5-10% of a beneficial microbial agent and the balance of a filler, the biostimulant is a seaweed extract, and the seaweed extract is at least one of carrageenan, sodium alginate, propylene glycol alginate and agar; through the synergistic effect of a multi-component formula, the fertilizer synergist is promoted to effectively deal with the problems of soil heavy metal pollution, salinization and organic matter loss, the soil structure is improved, and the product quality is improved.

The invention relates to the technical field of fertilizers, in particular to an alginic acid organic water-soluble fertilizer capable of quickly releasing nutrients and a preparation method of the alginic acid organic water-soluble fertilizer. The organic water-soluble fertilizer is prepared from the following preparation raw materials: 30 to 35 parts of sodium alginate, 12 to 15 parts of a seaweed extract composition, 5 to 8 parts of monocalcium phosphate, 5 to 8 parts of monopotassium phosphate, 12 to 15 parts of urea, 0.5 to 0.8 part of a chelating agent, 40 to 45 parts of an organic fertilizer raw material, 1.5 to 2 parts of a microbial strain, 12 to 16 parts of ammonium humate, 4 to 6 parts of a cosolvent and 1.4 to 1.7 parts of xanthan gum. By optimizing the ratio of the raw materials, the absorption and utilization rate of plants to the water-soluble fertilizer is remarkably improved; nutritional ingredients can be quickly released, and plants can be promoted to absorb water-soluble fertilizer; through the synergistic effect of microorganisms and organic components, the content of nutrient substances in soil is increased, plants are helped to better absorb mineral substances and trace elements, the utilization efficiency of the fertilizer is improved, healthy growth of the plants is promoted, and the yield is increased.

The invention relates to the technical field of agriculture, and discloses an ecological environment-friendly microbial degradation mulching film which comprises the following components in percentage by mass: 50-65% of polylactic acid; 15% to 25% of lignocellulose; 5%-10% of glycerin; 0.5%-2% of nano titanium dioxide; 0.1% to 0.5% of silver nanoparticles; 0.5%-2% of a tea tree oil extract; 15% to 20% of carboxymethyl cellulose; 13%-15% of a plant growth regulator; 5%-10% of an auxiliary agent; the auxiliary agent comprises one or more of an antioxidant, a plasticizer and a light stabilizer, and the plant growth regulator comprises one or more of a seaweed extract, indoleacetic acid or oleanolic acid. By adding nano titanium dioxide and silver nanoparticles into the mulching film, excellent ultraviolet resistance and antibacterial performance of the mulching film are achieved, and the problem that aging of a traditional mulching film is accelerated due to ultraviolet irradiation is solved.

The invention relates to the technical field of agricultural fertilizers, in particular to a shiitake mushroom residue functional proteoglycan organic fertilizer as well as a preparation method and an application method thereof. The organic fertilizer is prepared from 40-60% of functional proteoglycan, 15-30% of humic acid, 8-15% of monopotassium phosphate, 5-10% of charcoal and 5-10% of seaweed extract, the functional proteoglycan is prepared by mixing shiitake mushroom residues, oyster mushroom residues and agaric residues, the molecular weight of the functional proteoglycan is 5-50 kDa, and the functional proteoglycan contains a beta-1, 3 / 1, 6-glucan structure; the preparation method comprises the steps of mushroom dreg pretreatment, ultrasonic-assisted enzymolysis, multi-stage membrane separation, concentration and drying, formula mixing, granulation and packaging and the like. The organic fertilizer has dual functions of promoting plant growth and activating a plant immune system, can significantly improve the disease resistance and yield of plants, and improves the physicochemical properties of soil; the preparation process is environment-friendly, high in extraction efficiency and low in energy consumption; and the pH value of the product is adjustable.

The invention relates to the technical field of soil carbon improvement, and discloses a composite biological stimulant for tropical rainforest soil carbon improvement and a preparation method and application thereof, the composite biological stimulant is obtained by mixing a microbial preparation, an immobilized carrier, porous biochar, an inorganic mineral compound, a slow release fertilizer, a soil conditioner and a plant symbiotic inoculant; the microbial preparation comprises one or more of lactic acid bacteria, nitrifying bacteria, phosphate solubilizing bacteria, nitrogen-fixing bacteria and arbuscular mycorrhizal fungi; the inorganic mineral compound comprises feldspar, apatite and montmorillonite; the slow-release fertilizer comprises biochar, humic acid and phosphate; the soil conditioner comprises biological colloid prepared from seaweed extract and natural plant fiber prepared from straw and palm fiber; the plant symbiotic inoculant comprises rhizobium and / or endophyte. According to the composite biological stimulant, the soil carbon fixing capacity of the tropical rainforest is remarkably improved, the soil void structure is improved, and the plant growth capacity is enhanced.

The invention relates to a compound microbial fertilizer containing a seaweed extract as well as a preparation method and application of the compound microbial fertilizer, and aims to solve the problems that a traditional embedding material in a microbial fertilizer provided by the prior art is easy to disintegrate in a high-salt environment, a microbial inoculum is easy to inactivate, and the effect of the fertilizer in a high-pH environment is relatively small. Adding a seaweed extract and tannic acid into the bacterial liquid to form microcapsules, taking seaweed oligosaccharide and humic acid composite liquid as an outer slow-release layer, and spraying the bacterial liquid onto the surfaces of fertilizer particles through a nozzle, so that the fertilizer forms a gradient coating structure. According to the preparation method of the compound microbial fertilizer containing the seaweed extract, the fertilizer forms an ion barrier layer in a high-salt environment, natural auxin and humic acid in the seaweed extract synergistically activate strain metabolism, and after the prepared compound microbial fertilizer is applied, the growth effect of crops in a high-pH environment can be greatly improved.

The invention discloses an artificial biological reef for naturally repairing coral, a system and a preparation method. The artificial biological reef body comprises a main body structure made of a cement-based composite material, and at least one hollow cavity is formed in the main body structure; the ecological through holes penetrate through the wall thickness of the main body structure and are used for promoting water flow exchange and marine organism channels; the biological affinity surface layer is arranged on the surface of the main body structure, is made of cement-based materials mixed with seaweed extracts and has rough textures so as to promote attachment of coral larvae; and a reinforcing framework formed by a corrosion-resistant fiber reinforced material embedded in the main body structure improves the overall structural strength and impact resistance. The system comprises a plurality of reefs, special connecting pieces and a foundation stabilizing platform, and can be combined into an array for simulating a natural reef space structure. The preparation method comprises the steps of seaweed extract preparation, bioactive slurry preparation, assembly prefabrication, integrated pouring forming, maintenance and function integration, and preparation of the eco-friendly, stable-structure and multifunctional artificial reef is achieved.

The invention discloses an organic fertilizer which is prepared from the following raw materials in parts by weight: 30-60 parts of agricultural waste powder, 10-20 parts of mineral powder, 5-15 parts of animal and plant grease residues, 3-10 parts of a seaweed extract, 5-15 parts of humic acid, 1-5 parts of a microbial agent, 0.5-3 parts of a trace element additive and 2-8 parts of a natural adhesive. The problem that an existing organic fertilizer is single in nutrient element is solved, the organic fertilizer can provide macro and trace nutrients at the same time, the nutrient solubility is improved through the chelation of humic acid, and the nutrient absorption efficiency of crops is improved.

The invention discloses a citrus growth promoting fertilizer and a fertilization method thereof, and relates to the technical field of chemical fertilizer production, the citrus growth promoting fertilizer comprises 40-60 parts of macroelements, 15-25 parts of medium elements, 8-12 parts of trace elements, 10-18 parts of an organic active agent, and 5-10 parts of a slow release agent. Therefore, firstly, the nano calcium carbonate is used for replacing a traditional calcium source, and a polylactic acid-fucoidan slow-release membrane technology is combined, so that the dissolved state keeping time of calcium ions in the soil is prolonged by 30-50%, the calcium absorption rate is increased to 35% or above from the average industrial 20-30%, and the fruit cracking rate of citrus is effectively reduced; the bacillus subtilis and the seaweed extract in the organic active agent have a synergistic effect, through biological antagonism and induced resistance, the canker incidence rate is reduced to 1 / 4 of that of a control group, meanwhile, the soil microenvironment is improved through humic acid, and the root system health degree is improved by 40%.

The invention relates to a watermelon sweetening cultivation method. The watermelon sweetening cultivation method comprises the following steps: S1, applying a thoroughly decomposed organic fertilizer and a potassium-magnesium compound fertilizer which are uniformly mixed into soil as a base fertilizer before planting; s2, atomizing and spraying sweeteners to leaf surfaces and flowers of the watermelons in flowering and fruit setting periods; s3, a sweetener is sprayed to leaf surfaces from a watermelon fruit swelling period to a watermelon fruit maturation period, a nursing blender is sprayed to the surfaces of the watermelon fruits, and a nursing blender is sprayed to the surfaces of the watermelon fruits; the nursing blender is prepared from the following raw materials in parts by weight: 5 to 16 parts of beewax, 2 to 7 parts of porous calcium particles, 1 to 3 parts of seaweed extract, 0.5 to 3 parts of fructo-oligosaccharide, 0.5 to 1.5 parts of glycerol, 0.8 to 1.5 parts of span-80 and 70 to 90 parts of distilled water. The problem of how to reduce the poor sweetness from the center of the watermelon to the surface layer of the watermelon can be solved, the overall sweetness of the watermelon can be improved, and the watermelon explosion rate can be reduced.

This invention discloses a composite fruit and vegetable preservation film prepared using seaweed extract and its preparation method. The method includes: 1) weighing the following raw materials by weight: 100-150 parts seaweed extract, 5-10 parts chitosan, 6-12 parts polyvinyl alcohol, 5-15 parts sodium carboxymethyl starch, 1-4 parts modified starch, 1-6 parts seaweed oligosaccharide, 1-3 parts polyacrylamide, 1-5 parts sodium humate, 2-5 parts glycerol, and 2-6 parts potassium citrate; 2) mixing chitosan with seaweed extract; 3) adding sodium carboxymethyl starch and modified starch to the obtained mixture to obtain a premix; 4) mixing the premix with seaweed oligosaccharide and polyvinyl alcohol in a pulverizer, adding sodium humate to the pulverizer, and then stirring for 20-50 minutes; and 5) adding polyacrylamide, glycerol, and potassium citrate to the obtained mixture, and homogenizing in a homogenizer to obtain the composite fruit and vegetable preservation film.