117 results about "Calcium magnesium phosphate" patented technology

The invention relates to the technical field of land improvement, in particular to an alginic acid type multifunctional long-acting soil conditioner and a preparation method and application of the alginic acid type multifunctional long-acting soil conditioner. The core particle layer comprises an organic material, nano silicon, calcium magnesium polyphosphate, magnesium hydride, ammonium borate, rhamnose and an adhesive, and the slow release layer comprises clay minerals and alginate; the mass ratio of the clay mineral to the alginate to the organic material to the calcium magnesium polyphosphate to the nano silicon to the magnesium hydride to the ammonium borate to the rhamnose to the binder is controlled within a certain range. The soil conditioner provided by the invention is good in slow release performance, can release effective components durably and slowly, and has multiple effects of improving soil quality, providing nutrition, promoting crop growth, improving resistance and the like; the problems of soil acidification, heavy metal pollution, micro-plastic pollution, pesticide pollution, antibiotic pollution and the like in agricultural production can be effectively solved.

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 a recycling technology of industrial tailings, in particular to a soil conditioner prepared from the industrial tailings, a preparation method of the soil conditioner and application of the soil conditioner in acid cultivated land improvement. The soil conditioner provided by the invention comprises the following components: powder formed by calcining a basic raw material and an additive and then crushing the calcined basic raw material and additive, the basic raw materials comprise the following components in parts by weight: 85-95 parts of phosphate tailings and 2-10 parts of plant straws; the weight part of the additive is 3-5 parts. According to the invention, phosphate tailings and crop straws can be used as main raw materials to prepare the acid soil conditioner, the preparation process is simple, the cost is low, the treatment effect is good, acid cultivated land can be treated, and the soil conditioner can also be applied as a calcium magnesium phosphate fertilizer.

The invention discloses an ecological planting method for remarkably improving the amino acid content of citrus, which comprises the following steps: (1) mixing and fermenting pruned citrus branches, weed straws, livestock and poultry manure and indigenous probiotic ferment powder to prepare a basic microbial fertilizer, and adding a calcium magnesium phosphate fertilizer and monopotassium phosphate to prepare a special microbial fertilizer for citrus, applying as a base fertilizer in winter; (2) after citrus pruning, in key phenological periods such as a flower bud period, a young fruit period and a fruit swelling period, an indigenous probiotic enzyme diluent with a specific dilution ratio is used for systematic foliage spraying on a tree body. The indigenous probiotic enzyme contains bacillus amyloliquefaciens, saccharomycetes, active enzymes and a plurality of nutrient elements. The method can significantly increase the total amino acid content of citrus fruits, greatly increase the yield, improve the taste of the fruits, enhance the tree body resistance, reduce the use of chemical pesticides, improve soil, and realize quality improvement, yield increase and green sustainable development of citrus planting.

The invention relates to the technical field of soil pollution treatment, and discloses a phosphate passivation condition-based soil cadmium vertical migration law analysis method, which comprises the following steps: selecting a cadmium-polluted soil column, applying a calcium magnesium phosphate fertilizer as a passivator to the soil column part, carrying out a soil column solute penetration experiment, collecting pore water at different depths through side sampling holes, and determining the vertical migration law of cadmium in the soil column; measuring a measured value; the method comprises the following steps: establishing a one-dimensional migration-reaction model based on a Hydrus-Phreeqc coupling module, simulating migration and transformation of cadmium in soil and chemical reaction with phosphate, and obtaining a simulation value; according to the actual measurement value and the simulation value, the Hybrid-Phreeqc coupling module is corrected, and the vertical migration characteristics of cadmium are analyzed; after the soil column experiment is finished, soil samples are collected from top to bottom, and the distribution of cadmium in the soil is detected and analyzed. According to the method, the soil column experiment is combined with the Hydrus-Phreeqc coupling model, so that the influence of applying the calcium magnesium phosphate fertilizer on the vertical migration of the soil cadmium can be more systematically analyzed; the method is easy to operate, high in practicability and capable of being applied to remediation research of different heavy metals.

The invention discloses a multi-element conditioning fertilizer suitable for acid soil and a preparation method thereof, and the multi-element conditioning fertilizer suitable for acid soil comprises the following components by mass: 8-18 parts of diatomite; 20 to 30 parts of calcium humate; 25-35 parts of a silicon calcium magnesium phosphate fertilizer; 10 to 20 parts of chitosan modified humic acid; 5-10 parts of amino acid chelated medium trace elements; 15 to 25 parts of a biochar-based complex microbial inoculant; 3-8 parts of modified zeolite; 3-8 parts of polyglutamic acid; the multi-element conditioning fertilizer suitable for the acid soil contains various innovative components, chitosan modified humic acid improves the stability and adsorption performance of humic acid, amino acid chelated medium trace elements improves the absorption and utilization rate of the medium trace elements, polyglutamic acid enhances the water and fertilizer retention capacity of the fertilizer, and the water and fertilizer retention capacity of the fertilizer is improved. The diatomite and the modified zeolite significantly increase the porosity of the soil and improve the air permeability and drainage of the soil, and the components cooperate with each other, so that the physicochemical properties and biological activity of the acid soil can be comprehensively adjusted.

The invention relates to the technical field of agricultural resources and environment, and particularly discloses a rapid fertilization improvement method for newly-reclaimed red soil dry land. The method systematically integrates the core steps of soil diagnosis aluminum toxicity passivation, composite conditioner deacidification, two-stage deep ploughing, organic and inorganic biological synergistic fertilization, soil moisture content regulation and control, earth surface covering, green manure planting and returning to the field and the like. The applied composition comprises a soil composite conditioner, a charcoal-based organic fertilizer and a specific functional microbial agent, wherein the soil composite conditioner comprises modified oyster shell powder, a calcium magnesium phosphate fertilizer, humic acid, polyglutamic acid and the like. The method relates to key processes such as temperature programming calcination modification of raw materials, co-pyrolysis and composite granulation of the materials and the like. The method can synchronously and quickly improve the chemical and biological properties of soil and optimize the physical structure of a plough layer, and has the advantages of high improvement targeting, synergistic interaction of all steps, high fertilizing speed and lasting effect; in addition, the method has the advantages of being coherent in process, high in resource utilization efficiency and easy to implement on a large scale.

The invention provides a method for repairing acidified soil in a cherry orchard based on intercropping of green manure plants, and belongs to the technical field of soil improvement. The method comprises the following steps: spreading a soil conditioner into the cherry orchard, sowing green manure plants among rows or plants of cherry trees, covering the cherry orchard with the green manure plants in a no-tillage manner after cutting, crushing the whole green manure plants in the next year, and then turning and pressing the green manure plants, the soil conditioner comprises biochar, a compound microbial agent, an organic fertilizer and a calcium magnesium phosphate fertilizer; the composite microbial inoculant comprises bacillus subtilis, bacillus amyloliquefaciens, pseudomonas aeruginosa and a microbial inoculant carrier. The method provided by the invention can significantly improve the nutrients of the cherry orchard soil, improve the soil structure, increase the pH value of the acidic soil, reduce the content of exchangeable acids, and play a role in improving the acidic soil of the cherry orchard.

The invention relates to the field of potato planting, in particular to a preparation method of a safe seed dressing agent for seed potatoes and a seed dressing method.The potato seed dressing agent is prepared by mixing a calcium magnesium phosphate fertilizer, 50% carbendazim wettable powder, 3% Zhongshengmycin wettable powder, 80% mancozeb wettable powder and a slow release component, and the seed potatoes are cut into blocks for seed dressing. The method can safely and efficiently prevent and treat diseases such as soft rot, bacterial wilt and wilt of potatoes, reduces the rotting rate of potato blocks, improves the emergence rate, yield and quality of potatoes, and is simple to operate, easy to master and suitable for large-scale popularization and application.

The invention discloses an organic fertilizer for increasing the sugar content of grape fruits and a preparation method thereof.The organic fertilizer is prepared from, by weight, 30-40 parts of biomass, 5-15 parts of plant ash, 5-10 parts of urea, 20-30 parts of decomposed livestock and poultry manure, 15-20 parts of calcium magnesium phosphate fertilizer, 10-15 parts of potassium fertilizer, 25-35 parts of modified microecological preparation and 1-3 parts of microelements; wherein the modified microecological preparation is prepared from a modified carrier and a complex microbial inoculant. The organic fertilizer has the effects of improving soil quality, increasing the content of organic matters in soil and promoting growth of grape roots, so that absorption of grapes to nutritional ingredients in the soil is improved, the utilization rate of the organic fertilizer is increased, the growth requirements of the grapes are met, and the sugar content and yield of grape fruits are increased.

The invention relates to a synergistic biological prevention and control double-effect regulation compound fertilizer applicable to corn and a preparation method, and the synergistic biological prevention and control double-effect regulation compound fertilizer applicable to corn is prepared from the following raw materials in parts by mass: 15-20 parts of urea, 10-15 parts of controlled-release nitrogen fertilizer, 8-12 parts of monoammonium phosphate, 5-8 parts of calcium magnesium phosphate fertilizer, 10-15 parts of potassium sulfate, 1-2 parts of zinc sulfate, 0.5-1 part of boric acid and 0.2-0.5 part of ammonium molybdate. According to the invention, through the synergistic effect of the microbial agent and the Chinese herbal medicine extract, the effect of biological prevention and control is achieved, the use of chemical pesticides is reduced, and the risk of pesticide residues in corn is reduced.

The invention discloses a method for removing calcium and magnesium from a cobalt-nickel hydroxide raw material, and relates to the technical field of hydrometallurgy. The method comprises the following steps: slurrying a cobalt-nickel hydroxide raw material and deionized water, and washing the slurry to remove residual water-soluble calcium / magnesium at normal temperature in a carbon dioxide pressurized stirring manner, namely primary impurity removal; then, ferrous sulfate is used as an auxiliary rinsing agent for further washing and removing calcium / magnesium, and secondary impurity removal is achieved; the secondary impurity removal material is mixed and dissolved with sulfuric acid-ammonium phosphate, after the pH value is adjusted through ammonia water, most of residual calcium / magnesium ions are compounded to generate calcium phosphate / magnesium ammonium precipitate to be separated out, and at the moment, the filtered cobalt-nickel material is subjected to tertiary purification and impurity removal. The nickel-cobalt material subjected to three-time calcium / magnesium pre-removal can significantly reduce the impurity concentration of the acid-dissolved liquid, and lays a solid foundation for shortening the extraction stage number, reducing the extraction workload, reducing the extraction input cost and improving the product quality for a subsequent extraction production line.

The utility model discloses a mixed device for calcium magnesium phosphate production, including box, the right side communication of box top has the feeding hopper, the bottom communication of box has the discharge valve pipe, the left and right sides of box surface all are fixedly connected with the cylinder. The utility model discloses through driving motor drives helical vane pole rotation, can realize the stirring of material in the box, and the cylinder drives the movable frame to move up and down, drives the movable ring and the up and down movement of the stirring piece, carries out secondary disturbance to material, and the mixing effect of material is enhanced from horizontal and vertical direction, and the annular scraper of movable ring outside moves up and down along with the movable ring, can scrape the material adhered in the inner wall of box, so as to reach in the mixed box inside setting the supplementary mixing structure that can move up and down, improve mixing effect, make the fertilizer mix evenly, scrape the inner wall of mixed box simultaneously, avoid the material adhesion in the device inner wall, the effect that the user uses conveniently.

This invention relates to the field of rubber tree cultivation technology and discloses a method for cultivating rubber tree buds based on scale buds. The method includes: planting rubber tree bud-grafted seedlings in a propagation nursery, controlling soil moisture and applying compound fertilizer to the roots to cultivate them into single-stem buds; when the top leaves are stable and mature but the leaflets at the growing point have not yet unfolded, removing the top of the second leaf foliage below the top leaves; after removing the top, using a shade net to provide shade during specific periods on sunny days; regularly spraying a bud-promoting fertilizer containing potassium dihydrogen phosphate and urea during the aging period of the top leaves; stopping the application of compound fertilizer to the roots and spraying a bud-strengthening fertilizer containing potassium dihydrogen phosphate before cutting the buds; after sawing the trunk and cutting the buds, applying a base fertilizer containing well-rotted organic fertilizer and calcium magnesium phosphate, and repeating the topping process. By removing the top at specific times, combined with shading and phased nutrient regulation, this invention promotes uniform bud sprouting, improves the lignification of the buds, and replenishes the tree's nutrient consumption in a timely manner, ensuring the continuous propagation capacity of the propagation nursery.

The utility model discloses belt conveying equipment for calcium magnesium phosphate fertilizer production, which comprises a belt conveyor body, the surface of the belt conveyor body is fixedly connected with a quantitative cylinder through a support, the bottom of the quantitative cylinder is communicated with a blanking hopper, and the top of the quantitative cylinder is communicated with a feeding hopper. According to the quantitative conveying device, the motor is adopted to drive the quantitative wheel to rotate, and materials in the feeding hopper can be accurately and quantitatively conveyed, so that the materials uniformly fall onto the conveying belt of the belt conveyor body through the discharging hopper. By means of the accurate and quantitative feeding mode, the phenomenon that materials are locally stacked due to uneven feeding is effectively avoided, the situation that the materials are scattered due to vibration in the belt running process due to the fact that the materials are stacked too high is reduced from the source, material waste is greatly reduced, the production cost is saved, and the production efficiency is improved. And meanwhile, pollution to the production environment and the cleaning workload are reduced, and the device has the advantages of being good in conveying effect and not prone to scattering.

The invention belongs to the field of liquid fertilizers, and relates to a process for promoting the growth of commercial crops by using a lincomycin finished product liquid fertilizer, which comprises the following steps: diluting lincomycin dry powder according to a mass ratio of 1: 100 to obtain a lincomycin finished product liquid; the fertilizer is prepared from a modified accelerant, urea, monopotassium phosphate, calcium superphosphate, a calcium magnesium phosphate fertilizer, potassium chloride, zinc sulfate, borax, an iron fulvate solution, paclobutrazol and lincomycin fermentation liquor. Dissolving urea, potassium chloride, zinc sulfate and the iron fulvic acid solution in water, and uniformly mixing to prepare a nutrient solution; performing 200-DEG C high-temperature treatment on zeolite with the fineness of 200 meshes, and spraying the nutrient solution onto the zeolite; airing or drying the zeolite until the water content of the zeolite is reduced to be not higher than 5%; and uniformly mixing the residual chemical fertilizer with the modified accelerant to obtain the lincomycin finished product liquid fertilizer. The lincomycin finished product liquid fertilizer provided by the invention can improve the growth of crops.

The invention belongs to the technical field of soil improvement, and discloses a soil conditioner with an acidified soil improving function and a preparation method thereof. The conditioner is prepared from biomass charcoal, peat containing humic acid, crab shells, eggshells, clamshells, bamboo charcoal, zeolite powder, kieselguhr, biogas residues, potassium fulvate, calcium magnesium phosphate fertilizer, animal waste and a microbial agent according to the mass percent. The invention relates to the technical field of soil improvement. The modifier realizes a multi-dimensional synergistic effect through alkaline neutralization, humus buffering, slow-release fertilizer supply and microbial activation, can significantly improve the pH value of acidified rice field soil after one-time application, increases 0.6-1.0 unit, effectively increases the contents of soil organic matters, total nitrogen, available phosphorus and available potassium, improves the soil structure and microbial activity, and improves the soil quality. And the yield of rice is increased by about 10% or above. The method is suitable for soil improvement and green agricultural production of southern acidic rice fields.

The invention discloses a method for producing a high-phosphorus-content calcium magnesium phosphate fertilizer by using an industrial byproduct magnesium ammonium phosphate, which comprises the following steps: drying and screening magnesium ammonium phosphate, adding phosphorite, dolomite or serpentine and coke or anthracite, feeding the materials into a smelting furnace according to a ratio, melting and smelting at a high temperature, blowing air or oxygen by an air blower at the smelting temperature of 1400-1600 DEG C for 2-3 hours, and cooling to room temperature to obtain the high-phosphorus-content calcium magnesium phosphate fertilizer. The smelting time is 0.5-4 hours, discharging molten slag from a slag opening of the smelting furnace, and carrying out water quenching to obtain the calcium magnesium phosphate fertilizer; gas generated in the process enters a hot-blast stove along with smelting furnace gas, at the moment, the temperature of a hearth of the hot-blast stove reaches 900-1000 DEG C due to gas combustion, and ammonia reacts with nitrogen oxide in the tail gas to obtain nitrogen and water, and reacts with sulfur dioxide to finally obtain ammonium bisulfate. According to the invention, resource utilization of the industrial byproduct magnesium ammonium phosphate can be realized, the calcium magnesium phosphate fertilizer with high phosphorus content can be obtained, and nitrogen oxides and sulfur dioxide in the tail gas in the production process of the calcium magnesium phosphate fertilizer can be more effectively removed.

The invention discloses a microbial acidic soil conditioner, and belongs to the technical field of soil improvement. The microbial acid conditioner comprises trichoderma virens T259 with the preservation number of CGMCC No.41109. Through the synergistic interaction of the trichoderma virens T259, the calcium magnesium phosphate fertilizer, the organic fertilizer, the fulvic acid and the chitosan, the acid-base property of soil can be adjusted, and the microbial structure of the soil can be improved; the composition can also induce crops to generate resistance and promote crop growth, so that resistance and development to diseases are enhanced, and the yield and quality are improved.

The invention belongs to the technical field of compound fertilizers, and particularly relates to a compound fertilizer for improving the quality and yield of avocado fruits and a preparation method of the compound fertilizer. The compound fertilizer for improving the fruit quality and yield of avocados is prepared from the following raw materials: urea, a calcium magnesium phosphate fertilizer, potassium sulfate, magnesium chloride, corn straw, livestock manure, plant ash, fulvic acid, bacillus subtilis and soybean meal and corn germ meal composite enzymatic hydrolysate, wherein the soybean meal and corn germ meal composite enzymatic hydrolysate is a papain directional enzymatic hydrolysate. When the fertilizer is used for planting avocados, the quality and yield of the avocados can be remarkably improved.

The invention discloses a microsphere structure for soil improvement and a preparation method and application thereof, and belongs to the technical field of soil treatment. According to the structure, MBBR filler is used as a carrier, the microsphere is composed of an inner core, a middle layer and an outer layer, the inner core contains sodium percarbonate, super absorbent resin and triacontanol, and cooperation of water retention and steam disinfection is achieved; the middle layer is sodium alginate gel, MnO2, humic acid and calcium magnesium phosphate fertilizer are embedded in the middle layer, and the soil microenvironment can be adjusted and nutrients can be supplemented; the outer layer is a temperature-sensitive blended membrane of chitosan and poly (N-isopropylacrylamide), and can respond to the environment to accurately release the components in a controlled manner; in the preparation process, microspheres are constructed in a layered manner through an emulsion method, and then the microspheres are loaded on the MBBR filler; the structure is excellent in performance in soil steam disinfection, the disinfection efficiency can be improved, soil ecological restoration is promoted, and the problems that an existing material is single in function and poor in effect are solved.

The invention discloses an acid soil particle conditioner as well as a preparation method and application thereof. The acidic soil particle conditioner is prepared from the following raw materials in parts by weight: 5 to 20 parts of slaked lime powder, 5 to 20 parts of calcium magnesium phosphate fertilizer, 50 to 68 parts of earthworm manure, 1 to 30 parts of filler, 0.5 to 3 parts of binder and 45 to 50 parts of water, the particle diameter of the acidic soil particle conditioner is 1-4 mm, and the water content of the acidic soil particle conditioner is 10-12%. The acidic soil particle conditioner provided by the invention is helpful for improving the transportation, storage and use convenience of the conditioner, can slowly release nutrients, and improves the utilization efficiency of the conditioner. The conditioner can effectively improve soil acidification and improve soil fertility, so that the crop yield is increased.

The invention discloses a phosphate ore reverse flotation magnesium removal method and application, and the method comprises the following steps: S1, crushing, screening, grading and grinding phosphate ore containing calcium and magnesium to obtain phosphate rock powder; s2, water is added into the ground phosphate rock for pulp mixing, then the pH value is adjusted to 4.5-9.0, and ore pulp is obtained; s3, an inhibitor solution and a collecting agent solution are sequentially added into the ore pulp, flotation impurity removal is conducted, and tailings and phosphate concentrate are obtained; the inhibitor solution is fulvic acid and / or fulvic acid salt solution; according to the method, flotation is conducted through the inhibitor fulvic acid or the salt thereof, the method has the advantages of being free of phosphorus and pollution, small in dosage, mild in applicable pH range, free of corrosion damage to flotation equipment and the like, impurity removal treatment of the calcium magnesium phosphate ore can be achieved only through the reverse flotation short process, and the flotation impurity removal effect is good.

The invention relates to a rice seedling raising substrate and a preparation method of the rice seedling raising substrate. The rice seedling raising substrate comprises a first substance, a calcium magnesium phosphate fertilizer and a compound functional flora, each cubic meter of the first substance corresponds to 1kg-2kg of calcium magnesium phosphate fertilizer and 300g-500g of composite functional flora; the first substance comprises, by volume, 40%-60% of biochar, 30%-40% of soil, 10%-20% of decomposed organic fertilizer, 10%-20% of crushed plants, 8%-10% of attapulgite particles and 2%-5% of oil cake powder. The rice seedling raising substrate has the advantages of high fertilizer retention capacity, low cost, wide source, no increase of carbon emission and the like; in addition, the rice seedling raising substrate not only plays a biological prevention and control role on rice damping-off, but also avoids many defects caused by the use of broad-spectrum chemical bactericides. In addition, the use of the biochar conforms to the guidance of green cycle development.

The utility model discloses a water cooling system for calcium magnesium phosphate fertilizer production, which comprises a material conveying cylinder, a feeding port is arranged below the left side of the material conveying cylinder, a discharging port is arranged above the right side of the material conveying cylinder, the top of the material conveying cylinder is fixedly connected with a servo motor, a spiral material conveying roller is arranged inside the material conveying cylinder, and the spiral material conveying roller is fixedly connected with the servo motor. The output end of the servo motor penetrates into the conveying barrel and is fixedly connected with the top end of the spiral conveying roller. Through the arrangement of the detachable ring, the filter plate, the connecting piece, the connecting pipe and the water suction pump, water in the material conveying barrel can be pumped out and conveyed back to the water quenching pool, water recycling is achieved, and water resources are saved; and a filter plate can filter impurities in water to ensure the quality of return water, so that the effects that the cooling water is circulated by using the circulating mechanism, the water temperature reduction is accelerated, the water in the conveying mechanism is pumped out, and the cooling water is prevented from flowing out of the discharge hole to influence the water quenching effect are achieved.

The utility model relates to a wet-process calcium phosphate and magnesium grading removal device system. A discharge port below a jacket crystallization tank I is connected with a phase splitting tank, the bottom of the phase splitting tank is connected with a plate-and-frame filter press, an outlet of the plate-and-frame filter press is connected with a clear liquid tank, and an outlet of a sulfuric acid preparation tank is connected with the clear liquid tank; two pipelines are arranged at the outlet of the clear liquid tank, one pipeline is conveyed to the jacket crystallization tank through the centrifugal pump, and the other pipeline is conveyed to the jacket crystallization tank through the centrifugal pump. An extracting agent enters a crystallization tank for reverse extraction with sulfuric acid, a mixed solution after reverse extraction enters a lower split-phase tank and is continuously pumped into an upper crystallization tank for reverse extraction, ammonium sulfate is added under a low-temperature condition to form ammonium magnesium sulfate crystals, and then crystallized ammonium magnesium sulfate turbid liquid is pumped into a lower thickener; and filtering the liquid with high solid content at the bottom of the thickener through a double-push centrifugal machine, continuously pumping the filtrate into a reverse extraction crystallization tank for continuous reverse extraction, and carrying out calcium and magnesium reverse extraction circulation on the reverse extraction liquid sulfuric acid all the time to produce calcium sulfate dihydrate and ammonium magnesium sulfate crystals.

The invention discloses a conditioner suitable for carya cathayensis root rot and a control method. The conditioner is prepared from 70 parts of fermented cow dung mixture, 20 parts of fermented hickory hull and 10 parts of zeolite, wherein 10 kg of calcium carbonate, 15 kg of compound fertilizer, 10 kg of calcium magnesium phosphate fertilizer and 10 kg of potassium humate are added per cubic meter, and the NPK ratio of the compound fertilizer is 16-6-12. The method comprises the steps that a conditioner is applied to the carya cathayensis trees in November to December, annular ditches are formed by taking trunks as centers and 60-80 cm away from the trunks, the ditches are 30 cm wide and 10-15 cm deep, and the conditioner is applied into the ditches and covered with soil. The soil pH can be adjusted, the birth amount of new branches and new leaves of carya cathayensis trees is increased by 8%-21%, the occurrence rate of root rot is reduced by 60%-80%, the yield of carya cathayensis is increased by about 7%-10%, the commodity rate is increased by 20%-30%, production benefits are improved, and sustainable production of carya cathayensis is achieved.

The invention discloses a growth conditioning method for waxberry fusarium wilt prevention and control. A conditioning agent is researched and developed to condition a waxberry growth soil environment, promote root growth, improve stem and leaf growth, improve the biological and environmental stress resistance of waxberries, control the occurrence of waxberry fusarium wilt and realize sustainable high-yield and high-quality production. The growth conditioner comprises the following components: 60 parts of a fermented cow dung mixture, 20 parts of fermented hickory hull and 20 parts of calcium carbonate, wherein 5 kilograms of compound fertilizer, 3 kilograms of calcium magnesium phosphate fertilizer and 5 kilograms of potassium sulfate fertilizer are added per cubic meter; the compound fertilizer is selected from NPK (Nitrogen, Phosphate and Ketone) 16-6- The growth conditioner provided by the invention can regulate the pH value of soil, the pH value of waxberry site soil can be increased from 4-5 to 5.5-6, the organic matter content and air permeability of the soil are improved, the water and fertilizer retention capability is enhanced, and the microbial activity is promoted.

The present invention provides a propagation matrix and a propagation method for promoting spore production in arbuscular mycorrhizal fungi, comprising strigolactones and naphthaleneacetic acid. The present invention utilizes the synergistic effect of strigolactones and naphthaleneacetic acid, uses earthworm castings and peat as primary raw materials, and combines vermiculite, indoleacetic acid, humic acid, and calcium magnesium phosphate to prepare the arbuscular mycorrhizal fungi propagation matrix. The matrix effectively increases the root infection rate of arbuscular mycorrhizal fungi and the number of arbuscular mycorrhizal fungi spores produced. The arbuscular mycorrhizal fungi propagation matrix provided by the present invention is low-cost, simple to operate, and capable of large-scale production and application of arbuscular mycorrhizal fungi inoculants.

The invention provides a compound fertilizer for improving the yield and quality of a tea garden as well as a preparation method and application thereof. The compound fertilizer is prepared from an intelligent fertilizer and a nitrification inhibitor, the intelligent fertilizer is composed of a nitrogen fertilizer, a phosphate fertilizer and a potash fertilizer according to a mass ratio of 22: 10: 15; the mass of the nitrification inhibitor is 0.8%-1.6% of the nitrogen content in the mixed fertilizer; the nitrogen content is calculated by pure nitrogen, and nitrate nitrogen is not included in the nitrogen content; the nitrogen fertilizer is urea; the phosphate fertilizer is one or more of superphosphate, calcium magnesium phosphate fertilizer and ground phosphate rock; the potash fertilizer is potassium sulfate; the nitrification inhibitor is dimethyl pyrophosphate (DMPP); according to the compound fertilizer, nitrogen, phosphorus and potassium fertilizers are scientifically proportioned, and dimethyl pyrophosphate (DMPP) is added as a nitrification inhibitor, so that a proper amount of phosphorus and potassium fertilizers can be applied while the nitrogen fertilizers are applied, the conversion from ammonium nitrogen to nitrate nitrogen is delayed, the retention time of nitrogen in soil is obviously prolonged, nitrogen nutrients are better provided for the tea trees, and the yield of the tea trees is increased. Finally, the yield and quality of the tea garden are improved.