252 results about "Calcium superphosphate" patented technology

The invention discloses low-alkali solid waste cementing material-based plant-growing concrete and a preparation method thereof. The vegetation concrete comprises a base layer framework and a surface layer material laid on the framework. Wherein the base layer framework is prepared from the following raw material components in parts by weight: 160 to 200 parts of low-alkali solid waste cement, 15 to 25 parts of phosphogypsum, 1380 to 2100 parts of mineralized concrete recycled aggregate, 62 to 102 parts of mineral admixture and 60 to 90 parts of mixing water. The surface layer material comprises the following raw material components: 1-5% of sodium alginate, 1-10% of calcium superphosphate, 1-10% of urea and the balance of soil. The mineralized concrete recycled aggregate is prepared by the following steps: soaking the concrete recycled aggregate in a diammonium hydrogen phosphate solution, and separating out the aggregate after soaking is completed, thereby obtaining the mineralized concrete recycled aggregate. According to the plant-growing concrete, alkalinity in concrete pores can be remarkably reduced, and the plant-growing concrete has stable later strength and good plant germination rate.

The invention relates to a preparation method of a cultivation material for cultivating selenium-rich black fungus, which comprises the following steps: respectively preparing a slow-release sodium chlorate composite material and a slow-release selenium-containing mineral material, and then mixing with carbon nutrition, nitrogen nutrition and mineral nutrition to obtain the cultivation material. The slow-release selenium mineral material is a polymer-coated slow-release selenium mineral material prepared by the following steps: preparing a selenium mineral core material from selenium powder, gypsum, calcium superphosphate, monopotassium phosphate, calcium sulfate, diatomite, nano silicon dioxide and a surfactant OP-10, preparing a coating material, adding the selenium mineral core material, and soaking with a Bis-Tris buffer solution. Sodium chlorate and selenium are respectively prepared into specific slow release systems, and are slowly released in the cultivation material to react to generate a seleninic acid component which can be easily absorbed and utilized by the black fungus, so that the concentration of seleninic acid in the cultivation material is regulated, the growth of the black fungus is promoted, the yield of the black fungus is increased, the quality of the black fungus is remarkably improved, and the cultivation cost is reduced. The selenium content and the amino acid content in the black fungus are obviously increased.

The invention relates to the technical field of leymus chinensis planting, in particular to a method for planting leymus chinensis in a salinized sand land, which is used for interplanting mousse winterplant in an oat land. The row spacing is 80 cm, the sowing depth is 1-1.5 cm, the sowing amount is 0.5 kg / mu, sowing is carried out in line, and 27.8 kg / mu urea (N is greater than or equal to 46%) is applied as a base fertilizer. Timely irrigation. The fertilizer is applied once in spring every year. A test nitrogen fertilizer is urea (N > = 46%), a phosphate fertilizer is triple superphosphate (P2O5 > = 44%), a potash fertilizer is potassium sulfate (K2O > = 52%), and timely irrigation is carried out. According to the invention, not only is a proper fertilizer combination provided, but also the growth, development and asexual reproduction capabilities of leymus chinensis are greatly improved. The planting effect of leymus chinensis can be effectively improved, the yield and quality of leymus chinensis are improved, and good practicability is achieved. Meanwhile, the formula is economical and reasonable, and is easy to popularize and apply.

The invention relates to the technical field of fertilizers, and discloses a slow-release coated fertilizer and a preparation method thereof. Comprising the following raw materials in parts by weight: 57 to 77.6 parts of urea, 14.25 to 24.25 parts of diammonium phosphate, 0 to 5 parts of calcium superphosphate, 4.75 to 14.55 parts of potassium chloride, 0.03 to 0.2 part of chitosan, 0.0075 to 0.05 part of nano silicon dioxide, 0.001 to 0.015 part of glutaraldehyde, 2.96 to 4.94 parts of deionized water, 0.01 to 0.1 part of bacillus subtilis, 0.05 to 0.2 part of mesoporous silicon dioxide loaded nano selenium and 0.5 to 1 part of potassium fulvate. Chitosan, nano silicon dioxide and glutaraldehyde are matched with one another, and chitosan has pH responsiveness, so that the problems that a coating layer of a traditional slow-release fertilizer is prone to being affected by the environment and broken in advance, nutrients are rapidly released, and the slow-release effect is reduced are solved.

The invention discloses a preparation method for simultaneously and efficiently extracting crocodile polypeptide and crocodile oil, and relates to the technical field of biological extraction, crocodile meat is used as a raw material, and heating micro-pressure treatment is sequentially performed to promote component dissolution; a multi-stage enzymolysis process is adopted, alkaline protease, neutral protease and lipase are sequentially used, and a calcium phosphate system is used for assisting filtration and a natural antioxidant is added in a gradient manner in the enzymolysis process; performing plate frame filtration and standing layering subsequently to realize crude separation of the oil peptide; finally, the crocodile polypeptide liquid is subjected to multi-stage membrane filtration and spray drying, the crocodile crude oil is subjected to ultrasonic-assisted fishy smell removal, ceramic membrane fine filtration and gradient cooling phase change refining, and after enzymolysis treatment and before filtration, a composite additive is added into enzymatic hydrolysate and stirred. No organic solvent exists in the whole process, and the product yield, purity and oxidation stability are remarkably improved.

The invention relates to the technical field of fertilizers, and discloses a rice sheath blight disease prevention fertilizer, which comprises a fertilizer, medium trace elements, an adhesion functional carrier, a functional additive, and a microbial agent or a bactericide, the fertilizer comprises a nitrogen-phosphorus-potassium compound fertilizer, an original fertilizer, calcium superphosphate and ammonium sulfate, wherein the original fertilizer comprises decomposed livestock and poultry manure, crop straw compost, bean cakes and rape seed cakes; the medium trace elements comprise boric acid, copper sulfate and borax; the microbial agent comprises a bacillus subtilis microbial agent and a trichoderma harzianum microbial agent; the bactericide comprises validamycin wettable powder, a thifluzamide suspending agent and a tebuconazole emulsion in water. Through the components of the fertilizer, the occurrence rate of rice sheath blight disease can be remarkably reduced, the yield and quality of rice can be improved, the microbial agent can increase the number and activity of beneficial microorganisms in soil, the soil structure and fertility are improved, and the yield and quality of rice are improved. A good soil condition is created for rice growth, so that the rice has a better resistance effect.

The invention discloses heavy metal resistant bacillus velezensis as well as a microbial remediation agent and application thereof. Bacillus velezensis DBS01 is screened from heavy metal contaminated soil in Dabaoshan mining areas in Shaoguan City, Guangdong province, is preserved in China Center for Type Culture Collection (CCTCC), has a preservation number of CCTCC M 20252228, not only has resistance to various heavy metals, but also can metabolize and secrete metabolites such as organic acid, cellulase and growth hormone in different growth stages, and can be used for preventing and treating various heavy metals. Multiple functions of curing heavy metals, dissolving phosphorus and potassium, promoting plant growth and the like are realized. According to the method, bacillus velezensis DBS01 is inoculated into a culture medium containing straw, calcium superphosphate, agar and sodium alginate are added, and a mixture containing the bacillus velezensis DBS01 is freeze-dried, so that the heavy metal contaminated soil in the mining area can be efficiently repaired in an environment-friendly manner at low cost, and the ecological function recovery of the soil is effectively promoted.

The invention discloses an environment-friendly bio-organic fertilizer for improving acidified soil and a preparation method of the environment-friendly bio-organic fertilizer, and belongs to the technical field of organic fertilizers. The bio-organic fertilizer is prepared from the following raw materials in parts by weight: 10-20 parts of a composite gel material, 80-100 parts of decomposed livestock and poultry manure, 10-20 parts of a microbial agent, 30-50 parts of modified waste tea biochar, 10-15 parts of urea, 5-10 parts of humic acid, 1-5 parts of calcium superphosphate and 1-5 parts of sodium carboxymethyl cellulose, the microbial agent is prepared by mixing bacillus pseudofirmus, pseudomonas oryzae and azotobacter beijerinckii according to the volume ratio of 1: 1: 1. The bio-organic fertilizer can remarkably improve the pH of soil and increase the content of organic matters in the soil, has good buffering capacity and long-term effect, enhances the water and fertilizer retention capacity of the soil, and has a remarkable effect of increasing both production and income of crops.

The invention provides a method for preparing a biological organic fertilizer through plant straw fermentation, and belongs to the technical field of organic fertilizers. The method comprises the steps of plant straw pretreatment, fermentation solid preparation, bacteriostatic active ingredient preparation, functional additive preparation and fermentation. The fermentation comprises the following steps: stacking pretreated plant straws, fermentation solids and a functional additive for fermentation, carrying out first turning when the temperature in a pile reaches 52-56 DEG C, turning once every 18-21 hours, stopping turning after turning twice, standing until the temperature in the pile is reduced to 30-34 DEG C, adding fulvic acid, diammonium phosphate, ammonium chloride, calcium superphosphate and magnesium sulfate, uniformly mixing, and fermenting again, turning the pile once every 15-17h, and after turning the pile twice in total, finishing fermentation, and granulating and drying to obtain the biological organic fertilizer. The biological organic fertilizer prepared by the method disclosed by the invention is low in harmful pathogen content, short in fermentation period, stable in effect and excellent in application effect.

The invention belongs to the technical field of organic fertilizer processing, and particularly relates to a sheep manure organic fertilizer and a production process thereof. The process comprises the following steps: adding straws into sheep manure to adjust the carbon-nitrogen ratio to (25-35): 1, carrying out composting fermentation and keeping ventilation, collecting ammonia gas by using a calcium superphosphate solution, and adding the calcium superphosphate solution into compost during turning in a high-temperature period. The process is realized through a specific organic fertilizer preparation device, the device comprises a fermentation box and a recovery box, the fermentation box is provided with a turning mechanism and a spraying device, and a calcium superphosphate solution and related structures are arranged in the recovery box to enhance ammonia absorption. In the process, parameters such as calcium superphosphate solution concentration, liquid level height, stockpiling ventilation rate and the like are limited. The organic fertilizer prepared by the process is small in nitrogen loss, supplements phosphorus element, effectively improves the fertilizer efficiency performance, can effectively avoid the risk of unqualified fertilizer, and enables the product quality to be more stable.

The invention discloses a flower promoting cultivation method for multiple flowering of hybrid chimonanthus praecox, and belongs to the technical field of garden plant cultivation. The flower promoting cultivation method for multiple flowering of the hybrid chimonanthus praecox comprises the following steps: S1, applying an organic fertilizer and calcium superphosphate as a base fertilizer in October to November in autumn and winter; s2, performing updating pruning from December in winter to February in the next year; s3, applying a compound fertilizer after sprouting in spring, and immediately watering after applying the compound fertilizer; s4, pruning after flower bud differentiation and before flowering; and S5, in May to August, branches with flowers bloomed or thick and strong branches with lower branches with flowers bloomed are selected and pruned for 2-3 times in total, after pruning, compound fertilizer with high phosphorus and potassium element content is applied once every 10-15 days, and the concentration is 0.5-2%. According to the flower promoting cultivation method for multiple flowering of the hybrid chimonanthus praecox in one year, multiple flowering of the hybrid chimonanthus praecox can be achieved, the flowering phase can be directly continued from May to September, the flowering time of the hybrid chimonanthus praecox is prolonged, and the garden application landscape value is remarkably improved.

The invention provides a soil conditioner suitable for acid yellow soil, and belongs to the technical field of soil improvement. The soil conditioner is prepared from the following raw materials in parts by weight: 10 to 30 parts of straw charcoal, 20 to 40 parts of organic fertilizer, 5 to 15 parts of dolomite, 5 to 15 parts of kaolinite, 10 to 15 parts of calcium superphosphate, 5 to 15 parts of zeolite, 5 to 10 parts of fulvic acid, 3 to 8 parts of microbial fertilizer and 10 to 20 parts of wormcast. All the components have a synergistic effect and jointly improve the soil quality of the acid yellow soil, a good soil condition is provided for growth of crops, the acid yellow soil environment is effectively improved, and the yield and quality of the crops are improved.

The invention discloses a lignin-based hydrogel water-retaining agent as well as a preparation method and application thereof, and belongs to the technical field of soil water retention improvement. The preparation method provided by the invention comprises the following steps: dissolving lignin under an alkaline condition to form a uniform solution; adding a polymerization reaction monomer into the uniform solution, stirring and mixing, sequentially adding an initiator, an accelerant, a cross-linking agent and a regulator, and stirring and reacting to obtain a reaction solution; the regulator is selected from one or more of clay, zeolite, ammonium bicarbonate, potassium carbonate or calcium superphosphate; injecting the obtained reaction liquid into a mold, and performing ultrasonic treatment to form hydrogel; the hydrogel is cleaned and aged, and the hydrogel is obtained. The preparation method is simple, environmentally friendly, low in energy consumption, short in process, wide in raw material source, low in cost and suitable for industrial production, and the obtained lignin-based hydrogel water-retaining agent is free of toxicity and pollution and has excellent water absorption performance and biodegradability.

The invention belongs to the technical field of coating breeding, and particularly relates to a pretreatment method for iron powder coating breeding. Comprising the following steps: (1) mixing granular urea, calcium superphosphate and potassium chloride to obtain granular fertilizer; (2) dissolving granular fertilizer in water to prepare a granular fertilizer aqueous solution, soaking the rice seeds in the granular fertilizer aqueous solution for 3-5 hours, taking out the rice seeds, spreading the rice seeds in a shade place, and airing the rice seeds for 10-20 minutes to obtain fertilizer-soaked seeds; (3) mixing iron powder, granular fertilizer and bentonite in a powerful mixer for 5-10 minutes to obtain an iron fertilizer mixture, and rolling the iron fertilizer mixture through a high-pressure roller mill to obtain a roller-milled material; the rice seeds are coated with iron powder, so that the dead weight of the seeds is increased, the floating rate and the bird damage loss rate are greatly reduced, and the purpose of direct seeding of the rice seeds can be achieved.

The invention discloses a multi-effect soil conditioner for organic matter contaminated soil and a preparation method thereof, and relates to the technical field of compound fertilizers, the multi-effect soil conditioner comprises the following raw materials by weight: 5-7 parts of urea, 25-30 parts of calcium superphosphate, 7.5-8.5 parts of potassium sulfate, 13-17 parts of farmyard manure, 8-9 parts of perlite, 50-60 parts of straw biochar, and 8-10 parts of an organic pollutant adsorbent. The organic pollutant adsorbent is a MOFs-based composite material, and the stability, oxidation resistance and high-temperature stability of the organic pollutant adsorbent in wet soil are improved, so that the prepared multi-effect soil conditioner has relatively high organic pollutant adsorption capacity, and the soil conditioner has relatively good soil quality on the basis of meeting the nutritional requirements of soil. The organic pollutants can be adsorbed and gathered in cooperation with the straw biochar, subsequent pollutant removal is facilitated, and the method is worthy of application and popularization.

The invention discloses preparation and application of a biological carbon type phosphate fertilizer synergist suitable for flue-cured tobacco, and relates to the technical field of phosphate fertilizer synergists. Comprising the following steps: step 1, preparing raw materials; 2, raw material treatment; and step 3, mixing and reacting: by taking the charcoal and the humic acid as main raw materials, the content of available phosphorus in soil can be increased, absorption and utilization of tobacco to calcium superphosphate and diammonium phosphate are increased, growth and development of the tobacco are promoted, the fresh weight of the tobacco leaves is increased, and the phosphorus accumulation amount of the tobacco is increased. According to the preparation and application of the biological carbon type phosphate fertilizer synergist suitable for flue-cured tobacco, the fixing agent, the water-retaining agent and the microbial agent are added into the biological carbon source to form the phosphate fertilizer synergist, the water-retaining agent can prevent water loss in soil, and the fixing agent can prevent phosphorus loss in the soil; and a mixture of compound sodium nitrophenolate and high-purity alpha-pimacol is added, so that the permeation, adhesion and spreading force of the fertilizer are increased, the limitation of plants is broken, and the capability of the fertilizer entering the plants is enhanced.

The invention belongs to the technical field of saline-alkali soil restoration, and particularly relates to a medium element fertilizer for saline-alkali soil improvement and a preparation method thereof. According to the invention, calcium superphosphate in the fertilizer can provide a phosphorus source required by crop growth and can release Ca < 2 + > to replace Na < + >, and the complexing agent can chelate Cl <-> and SO4 < 2-> to synergistically reduce soil salinity; wherein the nitrogen source, the potassium source and the magnesium source can provide nitrogen, potassium and magnesium required by plant growth, and manganese, silicon and calcium elements in the pretreated electrolytic manganese residues enhance the salt resistance of crops; through the synergistic effect of all the components, the finally obtained fertilizer can synchronously realize saline-alkali soil desalination, pH value reduction and organic matter and nutrient supply improvement, so that plant growth is promoted.

The invention discloses an iron tailing-based modifier for improving soda saline-alkali dry farmland as well as a preparation method and application of the iron tailing-based modifier. The iron tailing-based modifier comprises the following components in percentage by mass: 86.76%-89.18% of iron tailings, 5.28%-6.46% of humic acid, 5.28%-6.46% of aluminum sulfate and 0.26%-0.32% of calcium superphosphate. According to the present invention, based on the iron tailing-based composite modifier formula, the physical and chemical properties of the saline-alkali soil are improved, the pH value and the alkalization degree of the moderate-severe soda saline-alkali soil are significantly reduced, the physical and chemical properties of the soil are effectively improved, the air permeability, the water permeability and the nutrient supply ability of the soil are enhanced, and the significant promotion effect on the crop growth is provided so as to increase the crop yield; by establishing a modifier quantitative application model based on soil physical and chemical parameters before improvement, precise regulation and control of saline-alkali soil improvement materials are achieved, efficient resource utilization of the iron tailings is achieved, and meanwhile the soda saline-alkali dry farmland is effectively improved.

The invention relates to the technical field of liquid fertilizer preparation, and provides an amino acid biological liquid fertilizer and a preparation method thereof. Comprising the following raw materials in parts by weight: 48-72 parts of waste mixed fermentation liquor, 8-15 parts of a plant extract, 1.2-3.6 parts of calcium superphosphate, 1-2 parts of fulvic acid, 2-6 parts of mineral source potassium fulvate, 1-3 parts of citric acid chelated iron, 1.5-3.5 parts of zinc sulfate, 0.4-0.8 part of manganese sulfate, 0.6-1.5 parts of magnesium chloride, 8-16 parts of sodium lignin sulfonate and 200-400 parts of water. The problems that an existing liquid fertilizer product is high in production cost, general in comprehensive performance and the like are solved, the effect of promoting growth and increasing yield of crops is achieved, and meanwhile the effect of preventing plant diseases and insect pests can be achieved.

The invention relates to the technical field of improvement of coastal saline-alkali land, in particular to a soil conditioner for salt-control fertile soil of coastal fishery reclamation saline-alkali land and a preparation method of the soil conditioner. The invention relates to a soil conditioner for salt-control fertile soil of coastal fishery receding reclamation saline-alkali land. The soil conditioner comprises the following raw material components in parts by mass: 40-60 parts of urea, 25-45 parts of calcium superphosphate, 30-45 parts of potassium sulfate, 20-25 parts of modified oyster shell powder, 10-15 parts of humic acid, 3-5 parts of a compound microbial agent, 10-20 parts of desulfurized gypsum and 25-35 parts of a biochar composite material, the biochar composite material is prepared from the following raw material components in parts by mass: 1 to 2 parts of sodium alginate, 1 to 2 parts of chitosan, 3 to 8 parts of biochar, 1 to 5 parts of calcium chloride, 10 to 20 parts of tuff stone powder, 0.25 to 2 parts of acidified attapulgite, 0.01 to 0.08 part of graphene oxide, 1 to 5 parts of ferric nitrate, 0.6 to 3 parts of copper nitrate and 0.1 to 0.5 part of silane coupling agent. By adopting the soil conditioner prepared by the invention, the pH value of soil, the volume weight of the soil and the total amount of water-soluble salts can be remarkably reduced, meanwhile, the organic matters of the soil are increased, and the porosity of the soil is increased.

The invention discloses a special slow-release fertilizer for wheat in saline-alkali soil as well as a preparation method and application thereof, and relates to the technical field of slow-release fertilizers. The fertilizer contains various functional substances and a microbial agent, and specifically contains the following components in parts by weight: 5-10 parts of urea, 0.5-3 parts of potassium chloride, 5-10 parts of diammonium phosphate, 2-5 parts of triple superphosphate, 0.5-1 part of magnesium sulfate, 0.5-1 part of zinc sulfate, 0.2-0.5 part of boric acid, 0.2-0.4 part of resveratrol, 0.5-1 part of alginic acid, 0.3-0.5 part of fulvic acid and 1.0 part of a microbial mixed agent, and 0.1 to 0.3 part of a surfactant. According to the fertilizer, all the raw material components are reasonably compounded, the physicochemical properties of saline-alkali soil can be effectively improved while the growth requirement of wheat in the saline-alkali soil is met, and meanwhile the utilization rate of the fertilizer can be increased through the slow release effect, and damage to the environment is reduced.

The invention belongs to the technical field of compound fertilizers, and particularly relates to a mineral source nitro-humic acid complex phosphate fertilizer for treating land salinization and a preparation method of the mineral source nitro-humic acid complex phosphate fertilizer. Comprising the following components in parts by weight: 50-80 parts of mineral source nitro humic acid, 5-20 parts of calcium superphosphate, 1-5 parts of a soil conditioner, 1-3 parts of trace elements, 5-15 parts of biochar, 0.5-2 parts of a complex microbial inoculant and 3-8 parts of a coating material.

The invention discloses an organic compound fertilizer for promoting rice growth and application thereof, and belongs to the technical field of compound fertilizers. The organic compound fertilizer for promoting rice growth, provided by the invention, not only contains organic matters, but also contains inorganic nutrients and functional microorganisms, is rich in organic matters and various inorganic nutrients, can provide comprehensive nutrients for rice growth, and promotes healthy growth of rice. Urea, diammonium phosphate, potassium sulfate, calcium superphosphate and other inorganic fertilizers can provide nitrogen, phosphorus and potassium elements needed by rice growth and can be rapidly absorbed and utilized by rice; the animal waste, the rice straw enzymatic hydrolysate, the distillers' grains, the oil meal and the like can provide sufficient nutrients for rice and promote growth of the rice on one hand, can improve physical properties of soil and promote growth and development of rice root systems on the other hand, and are combined with the microelements, the compound microbial powder and the silicon fertilizer in use, and the components act together, so that the effect of improving the rice yield is achieved. The growth of the rice is promoted, the yield of the rice is increased, and the physical property of the soil is improved.

The invention relates to the technical field of fertilizers for tea gardens, and discloses a selenium-rich fertilizer for tea trees and a preparation method of the selenium-rich fertilizer. 4-8 parts of ammonium nitrate; 2.1 to 3.5 parts of calcium ammonium nitrate; 6-11 parts of ammonium sulfate nitrate; 10 to 14 parts of triple superphosphate; 15-19 parts of powdered rock phosphate; 22-28 parts of plant ash; 8 to 12 parts of sodium selenite; 7 to 9 parts of selenosulfinic acid; 0.4 to 1.3 parts of zinc; 0.73 to 1.12 parts of iron; 0.56 to 0.84 part of manganese; 4-7 parts of lime; 1-3 parts of sulfur; 0.81 to 0.93 part of bentonite; by adding the sodium selenite and the selenosulfinic acid in a set proportion into the raw materials and combining a staged preparation process, efficient and stable selenium fertilizer production can be realized, so that the selenium content in the tea leaves is increased, and the problems that the selenium content in the tea leaves is insufficient due to lack of addition of selenium elements in an existing tea tree fertilizer and the selenium content in the tea leaves is low are finally solved. The requirement of the market on the selenium-rich tea cannot be met.

The embodiment of the application provides a calcium superphosphate chemical conversion device capable of improving stirring rate, and relates to the technical field of phosphate fertilizer processing. The device comprises a mixing tank, a feeding port is arranged at the top end of the mixing tank, a first motor is arranged at the center position of the top end of the mixing tank, a rotating shaft is fixedly arranged on one side of the first motor, a first gear is fixedly arranged on one side of the rotating shaft, second gears are symmetrically and meshingly connected on the two sides of the first gear, and rotating rods are fixedly arranged on one side of the two second gears. Through the operation of the first motor, the rotating shaft is driven to rotate, the two second gears on the two sides are driven to rotate through the meshing of the first gear, and then the rotating rods are driven to rotate, the first stirring rod, the L-shaped rod and the second stirring rod are driven to synchronously rotate, the coverage area is improved through the first stirring rod, the L-shaped rod and the second stirring rod, and the stirring process is more uniform and efficient, and good sufficient stirring is achieved.

The application provides a seedling raising management method for improving the seedling effect of Polygonatum franchetii, and relates to the technical field of artificial seedling raising of Polygonatum franchetii. The management method is as follows: liquid compound fertilizer is prepared by using calcium superphosphate, alginic acid, cassava fermentation material and naphthaleneacetic acid; leaf fertilizer is prepared by using potassium dihydrogen phosphate, acid-treated cassava extract and zinc sulfate for post-emergence fertilization management of Polygonatum franchetii, wherein the cassava fermentation material is obtained by fermenting cooked cassava by using pink spiral sporodochium and then alcohol extraction, the acid-treated cassava extract is obtained by adding acid to cassava to grind into a slurry and stirring for extraction, and then the pH is adjusted to neutral, and the slurry is squeezed, filtered, concentrated, and freeze-dried. The application overcomes the defects of the prior art, effectively promotes the growth of seedlings by setting different fertilization and leaf fertilizer for the post-emergence Polygonatum franchetii, and obtains seedling with good growth condition in a short time, thereby comprehensively improving the seedling raising efficiency.

The invention relates to the technical field of plant cultivation, in particular to a high-survival-rate seedling transplanting method. The transplanting method comprises the following steps: classifying and screening nursery stocks to obtain screened nursery stocks; lifting the screened seedlings according to a preset soil ball diameter to obtain a seedling transport body; loading the nursery stock transportation body into a container containing a pretreated nursery substrate (perlite, dried chicken manure, peat soil, straw and decomposed sweet potato seedlings) to obtain a nursery stock transplanting body; transferring the nursery stock transplanting body into the planting ditch for bed arrangement operation to obtain a nursery stock transplanting bed body; performing early-stage management on the nursery stock transplanting bed body to obtain a nursery stock bed; in the early-stage management, a compound organic fertilizer (rape seed cake, sheep manure, humic acid, wheat straw, bentonite, boric acid, magnesium sulfate, ammonium sulfate, calcium superphosphate, potassium sulfate and water) is used for additional fertilization; transplanting and planting the nursery stock bed to obtain transplanted nursery stocks. According to the method, by constructing a technical closed loop of root system microenvironment restoration, gradient adaptation and precise nutrition, the transplanting survival rate of the seedlings can be effectively increased.

The invention discloses an areca-nut solid fertilizer for improving the content of catechin and precise nutrition of areca-nuts and application of the areca-nut solid fertilizer, and belongs to the technical field of fertilizer preparation. The preparation method comprises the following steps: mixing cassava straws, cassava residues, hermetia illucens sand, calcium superphosphate, quick lime and zymophyte, and carrying out first composting fermentation to obtain a first fermented product; and adding macroelements containing monopotassium phosphate, potassium nitrate, urea, calcium carbonate and magnesium sulfate in a specific proportion, microelements containing boron, zinc, copper, iron and manganese in a specific proportion and bacillus subtilis into the first fermented product, carrying out second composting fermentation, and carrying out aging treatment to obtain the betel nut solid fertilizer. The prepared betel nut solid fertilizer can accurately provide nutrients according to the requirements of betel nuts for various nutrient elements, and negative effects on soil due to excessive nutrient elements are avoided; meanwhile, the content of areca catechin is increased, and the nutritional value of the areca catechin is enhanced.

The present invention belongs to the technical field of fertilizers, and specifically relates to an organic and inorganic special fertilizer for improving millet quality and a fertilization method thereof, wherein the special fertilizer comprises urea and fermented mealworm excrement, wherein the fermented mealworm excrement is obtained by anaerobic fermentation of mealworm excrement and superphosphate: the mass of the superphosphate is 2%-4% of the mass of the mealworm excrement. The fertilization method is that when millet is sown, urea and fermented mealworm excrement are put in as base fertilizer at one time, wherein urea is 8-12kg / 667m 2 , fermented mealworm manure is 250‑500kg / 667m 2 Compared with the use of chemical fertilizers alone, the technical solution of applying urea with mealworm feces in the present invention uses less urea, and achieves the effects of low-carbon circulation, greenness, weight loss and efficiency enhancement in terms of fertilizer input, crop yield and quality, improvement of arable land fertility and environmental impact.

This invention discloses a wheat-specific fertilizer suitable for rice-wheat rotation and its preparation method, comprising the following steps: mixing equal volumes of carboxymethyl chitosan solution, composite biochar dispersion, and agar solution, then adding sodium tripolyphosphate solution dropwise, stirring, allowing to stand, dialyzing, and freeze-drying to obtain hydrogel particles; swelling the hydrogel particles in a mixed aqueous solution of urea and superphosphate, filtering, and vacuum drying to obtain the wheat-specific fertilizer suitable for rice-wheat rotation; this invention uses a coating material to coat composite biochar powder, nitrogen fertilizer, and phosphate fertilizer, and improves the utilization rate of nitrogen and phosphate fertilizer through the slow-release effect of the coating material; by adsorbing fixed trace metal elements through the coating material, the slightly acidic state of the phosphate fertilizer during dissolution is used to convert the adsorbed fixed trace metal elements into a free state, and then titanium aluminum carbide promotes the movement of the free trace metal elements, thereby promoting the absorption and utilization of trace metal elements by wheat roots and improving wheat yield and quality.