32results about How to "Significant increase in production" patented technology

The invention relates to a bio-organic compound fertilizer, which comprises the following components in part by weight: 10 to 30 parts of organic matter, 2 to 10 parts of compound microbial inoculants, 5 to 20 parts of humic acid, 5 to 20 parts of amino acid, 4 to 10 parts of chitin, 1 to 5 parts of polypeptide, 530 parts of nitrogen, phosphorus and potassium, 5 to 10 parts of secondary and trace elements, 5 to 15 parts of algae fertilizer, 5 to 10 parts of zeolite powder and 1 to 5 parts of synergistic agent. Through the scientific and rational formula, the bio-organic compound fertilizer achieves nutritive equilibrium and can satisfy the need of crop growth in nutrient. The microbial inoculants are added to quickly degrade natural macromolecular organic compounds into the organic fertilizer and decompose organic pollutants, which effectively improves the capacity of crops in the absorption of nutrient components, reduces the waste of the fertilizer and reduces the damage of the chemical fertilizer to soil to further achieve the nutritive equilibrium, satisfy the need of the crop growth in the nutrient, achieve the aims of low investment and high output value, improve the quality of the crops and improve the economic benefit brought by the crops.

This invention relates to an envelope control release fertilizer and its production method that using heating fluidized-bed envelope technology. Exhausted thermoplastic resins are used and many filling materials are added, it is used in quick mass industrialized production. Polystyrene cellular resin and polyethylene pellicle resin are mixed as certain proportion set before, and certain proportion flour, corn powder and rubber powder are mixed and dissolved in mixed liquor perchlorethylene and dichloromethane. The liquor is uniformly sprayed to the pre-heated composite fertilizer, carbamide, lemery salt and other fertilizer particles through twin fluid atomization nozzle in heating fluidized-bed in order to form macromolecule polymer envelope that lubricity and densification and with different capabilities of breaking through of water. The liquor is recovered through special made condensation and compaction recovery plant. This production not only has good nutrition control and releasing capability and the nutrition control and releasing term can reach 1 to 12 months, but also the putamina residue in the soil can be degraded in short time, so it belongs to environment good control and releasing fertilizer.

The invention provides a heavy metal sludge soil restorer, a preparation method and an application thereof in sludge elimination. The adopted technical scheme comprises: municipal sludge is subjected to pretreatment, thermophiles are used for decomposing organic substances, and a heavy metal is added to treat microorganisms. After the sludge restorer is used in a test, the effective removal rate of various pollutants in soil reaches 95% or above, in line with national standards. At the same time, sulfate can be used to repair heavy metal land in situ, and is also a very good organic fertilizer, and is beneficial to reduction in the use of chemical reagents and chemical fertilizers in agricultural production, thereby eliminating pollution sources and secondary pollution from the source.

The invention discloses a regulator for the growth of compound nutritional plants. The growth regulator consists of microelements of 3.2 to 6.0wt percent, medium elements of 2.3 to 3.6wt percent, trace elements of 3.79 to 6.25wt percent, organic complexing agent and surfactant. The regulator for the growth of the compound nutritional plants overcomes the various shortages of the existing plant yield stimulants with single function and has the advantages of plant growth regulator, multiplex trace elements fertilizer, anti-drought agent and anti-photosynthesis agent. Through experiments for a plurality of years and promoting demonstrations, the regulator for the growth of compound nutritional plants is proved to have yield promotion effect on all grain crops, economic crops, fruits and vegetables and flowers and trees with evident and stable growth rate of yield and safe use but no toxic side effect, no residues and no contamination.

The invention relates to the propagation production of cane seedlings, and provides a method for removing cane perennial root dwarfing germs and rapidly propagating healthy cane seedlings, which comprises the following steps: little amount of original seeds are treated by hot water, stem tips which are detected to be feminine by the regenerated plantlet by carrying out speckle enzyme marker immune test (DB-EIA) is taken as an explant, healthy seedlings are produced by induction culture, secondary propagation culture, root-promoting culture, temporary planting and second-stage or third-stage nursery propagation-extension; furthermore, the disinfection of seed-cutting tools (cane knives) is paid attention to in the nursery propagation-extension, before the seedlings are used as seeds for large field production after coming out from nursery, cane stem juice is extracted by sampling, and RSD virus is detected by using the DB-EIA, thus guaranteeing the providing of qualified seedlings. The method has the advantages that: dwarfing disease pathogenic bacteria of the perennial root of the cane seedling can be thoroughly removed, annually propagation coefficient can reach as high as more than 10 thousand times, furthermore, the seedling has no variation, has the advantages of being fast, high-efficient and safe, and is suitable for the industrialized and standardized production of the cane healthy seedlings on scale.

The invention relates to a biological composite fertilizer, and concretely relates to a biological composite fertilizer. The biological composite fertilizer is characterized by being composed of the following raw materials: 7-9 parts of a microbial composite inoculant, 3-5 parts of nitrogen-fixing bacteria, 3-5 parts of phosphobacteria, 3-5 parts of potassium bacteria, 5-15 parts of humic acid, 10-20 parts of amino acids, 4-6 parts of chitin, 1-3 parts of polypeptide, 5-15 parts of medium and trace elements, 5-15 parts of an algae fertilizer, 8-10 parts of zeolite powder, and 1-3 parts of a synergist. The fertilizer is capable of obviously improving soil fertility and microbial environment in soil, and has effects of resisting insect diseases. The fertilizer is low in cost, simple in production technology, long in fertilizer efficiency and free of pollution. Nutrition balance is reached through scientific reasonable formula, nutrients demanded by crop growth are satisfied, large-molecular natural organic compounds are accelerated to be decomposed into an organic fertilizer by adding the inoculants, organic pollutants are decomposed, the capability of crop absorbing nutrients is effectively improved, fertilizer waste is reduced, damage of chemical fertilizers to soil is reduced, and thus nutrition balance is realized, nutrients demanded by crops are satisfied, and economic benefit of crops is improved.

The invention discloses a degradable high polymer film-coated controlled release fertilizer. The degradable high polymer film-coated controlled release fertilizer has the particle size range of 2.0 to 5.0mm, the coating rate of 2 to 10 percent and the nutrient release period of 1 to 10 months. A film-coated material has good biodegradability, so a film shell can be degraded quickly after the fertilizer is applied, and the controlled release fertilizer is favorable for protecting the agricultural ecological environment. The nutrient release period of the product can be controlled between 1 and 12 months accurately. In addition, products with different release periods and different release characteristics can be blended in a certain proportion and made into specific film-coated controlled release fertilizers special for various crops by simulating the nutrient demands of the various crops, and nutrient release curves of the controlled release fertilizers are made to coincide with nutrient uptake curves of the crops to achieve the aim of controlling the release of the nutrient accurately.

The invention relates to a waste paper modified coated control release fertilizer and a preparation method thereof. The preparation method comprises the following steps: first, adding waste paper or carton powder into a liquefier A to prepare a liquefied matter and modify; and then, uniformly mixing the modified liquefied matter and a curing agent C in a weight ratio of 1:1 as a coating material which is sprayed to the surfaces of fertilizer particles to be cured to films to obtain the coated control release fertilizer, wherein the coating material accounts for 2-8% of total weight of the fertilizer, the modified liquefied matter accounts for 0.5% of total weight of the fertilizer and the curing agent C accounts for 0.5% of total weight of the fertilizer. Compared with processing of common control release fertilizers, the fertilizer provided by the invention has the characteristics of few coating materials required, low production energy consumption, environment friendliness, production cost conservation and the like.

The invention discloses a modified thermosetting resin coated urea, comprising a urea core and a thermosetting resin coat. The total coating rate is from 2 percent wt to 17 percent wt. Nutrient release period is from 1 to 12 months. The manufacture method has the following steps: (1) mixing bisphenol A epoxy resin and curing agent thereof evenly; adding coat modifier and preparing mixed liquid; (2) preheating grain urea in a granulator; (3) adding the mixed liquid onto the grain urea in the granulator; keeping temperature; making the granulator go on running; coating evenly; solidifying to a coat and obtaining the modified thermosetting coated urea. The controlled release fertilizer has good output increasing effect and controlled release performance, which has great popularization value.

The invention provides a sweet corn functional fertilizer which comprises the following raw materials in percentage by weight: 30-45% of urea, 10-25% of monoammonium phosphate, 20-35% of potassium chloride, 5-20% of ammonium sulfate, 0.1-2% of borax, 0.05-0.5% of chelated zinc, 0.5-1.5% of a nano synergist, 0.1-1% of micro-molecule organic carbon and 0-30% of auxiliary materials. According to the sweet corn nutrient requirements and south soil characteristics, the biological source trace element chelated zinc, the nano synergist and the micro-molecule organic carbon are fused on the basis of nitrogen, phosphorus and potassium fertilizers, so that the fertilizer nutrients can be correspondingly released according to the sweet corn growth time, the fertilizer nutrient utilization rate is improved, and the nutrient requirements of sweet corn fruits are met. Moreover, the barren tip problem of the sweet corn due to zinc and boron deficiency at the flowering and milking stage and hollow kernels caused by potassium deficiency in the late growth stage can be solved, and the aims of increasing the yield and improving the quality are achieved.

The invention discloses a thermoplastic resin coating release-controlled fertilizer. The preparation method is as follows: coating solution is prepared: gas is fed to a fluidized bed, and granulated fertilizers are added, thus leading the mixture to be in a fluidization state and being preheated; the coating solution is sprayed to the particle surface of the fertilizer, thus obtaining the finished thermoplastic resin coating release-controlled fertilizer. The nutrient release-controlled period of the fertilizer can be adjusted according to the coating thickness and the addition of conditioners and can be controlled accurately for a long time which differs from one month to 12 months; the release-controlled effect is perfect.

The invention belongs to the technical field of agriculture and discloses a microbial agent for controlling root-knot nematode. The microbial agent is prepared from bacillus subtilis, purpureocillium lilacinum, bacillus cereus and acremonium strictum, wherein the living bacteria count ratio of the bacillus subtilis to the purpureocillium lilacinum to the bacillus cereus to the acremonium strictum is (1-50): (1-50): (1-50): (1-50); and the living bacteria count is greater than 200,000,000 / ml. In addition, the invention also provides a bacterial fertilizer for controlling the root-knot nematode, which comprises the microbial agent, a fertilizer and a carrier. The microbial agent is combined with the fertilizer, so that the nutrient supply for accelerating the plant growth can be improved when nematode is controlled.

The invention discloses a water-soluble fertilizer containing fulvic acid and a preparation method of the water-soluble fertilizer, which belong to the technical field of fertilizers. The water-soluble fertilizer is prepared from urea, monoammonium phosphate, potassium nitrate, ammonium molybdate, amino acid powder, an anti-caking agent, a chelating agent, manganese sulfate, boric acid, ferrous sulfate, magnesium sulfate and fulvic acid according to a certain weight ratio. Since the anti-caking agent as a specific component is added in the water-soluble fertilizer, a layer of film can be formed on the surface of the fertilizer to effectively wrap the surface of the fertilizer, consequently, the production of fertilizer salt bridges and the diffusion of a saturated solution are blocked, andwhile fertilizer caking is effectively prevented, the instant solubility of the fertilizer is not influenced. The nutrition of the water-soluble fertilizer disclosed by the invention is balanced andcomplete, no antagonistic effect exists between nutrients, the balanced supplementation of a variety of nutrient elements to crops is realized, and the fertilizer can be rapidly dissolved, promotes the balanced absorption to the nutrients by plants, and particularly has a remarkable effect in increasing the yield of rape and influencing quality.

The invention relates to the field of technologies for producing biological organic fertilizers, in particular to a special microbial fertilizer for radix angelicae sinensis and a method for preparing the special microbial fertilizer. The special microbial fertilizer comprises an organic fertilizer, weathered coal and organic carriers. The organic fertilizer is livestock excrement, and the organic carriers contain rape pseudomonas fermentation liquor and bacillus muralis fermentation liquor. The special microbial fertilizer particularly comprises, by weight, 50-80 parts of the livestock excrement, 20-60 parts of the weathered coal, 5-15 parts of the rape pseudomonas fermentation liquor and 5-15 parts of the bacillus muralis fermentation liquor. According to the technical scheme, the special microbial fertilizer and the method have the advantages that as shown by results of fertilizer efficiency comparative tests in places such as Weiyuan, Minxian and Longxi in the Gansu province over 3 years, obvious soil-borne disease resistance and yield increase effects are realized by the special microbial fertilizer which is applied to the radix angelicae sinensis, radix angelicae sinensis root rot prevention and treatment effects of the special microbial fertilizer are 45%-48%, and the yield increase is 12%-16%.

The invention relates to a seedling-cultivating method of yellow peachesroot seedlings. According to the method, by seed tree handpicking, reasonable fertilization and strict control over management conditions of temperature, humidity and the like in a cultivating process, the root seedlings with strong rooting capability are cultured. According to the seedling-cultivating method of the yellow peachesroot seedlings, normal growth and fruit bearing of the root trees are not influenced, the output of seedling of the root seedlings is big, the growth condition is good, the growth speed is high, fibrous roots are massive, the survival rate of transplanting can reach up to 98%, the growing trend of transplanted yellow peach trees is orderly, the rooting percentage is high, the disease resistance of seedlings is improved, rich nutrient elements are provided for the growth of the yellow peach trees, the yellow peach trees grow fast, so that the yield of yellow peaches is drastically increased, and the method has the obvious yield-increasing and sugar-increasing effect compared with normal cultivating methods of grafting and the like.

The invention relates to an adjustable oxygenation energy-saving combustion-supporting system. The adjustable oxygenation energy-saving combustion-supporting system is characterized by comprising an air compression unit, an air purification unit, an oxygen-nitrogen separation unit, an oxygenation adjusting mixer unit and an oxygenation applying nozzle unit. The invention provides an adjustable oxygenation energy-saving combustion-supporting system to change the manner of combustion support of air and save the fuel through a stable system in lower cost under the condition that the yield and the quality of the product are unchanged and even improved; meanwhile, the requirements of environmental protection are better met. According to the primary condition of energy conservation measure, the furnace age, the operation habit and the management condition of the primary furnace, after the adjustable oxygenation energy-saving combustion-supporting system is adopted, the energy-saving effects of various industrial furnaces are as follows: 5%-20% for various fuel coal industrial furnaces, 6%-30% for various fuel oil industrial furnaces, and3%-18% for various fuel coal industrial furnaces.

The present invention relates to a kind of compound fertilizer containing effective silicon component, nitrogen fertilizer, phosphate fertilizer and potash fertilizer, and the compound fertilizer contains reaction residue of flyash treating waste alkali liquid 20-30%, nitrogen fertilizer 30-40%, potash fertilizer 10-20%, ordinary calcium superphosphate 15-30%. Experiment shows that the compound fertilizer has obvious effect of increasing wheat, corn and other crops and no any toxic side effect.

The invention discloses an amino acid water-soluble fertilizer. The water-soluble fertilizer is prepared from paecilomyces lilacinus fermentation liquor, polyglutamic acid fermentation liquor, micromolecular amino acid, chitosan oligosaccharide, potassium alginate, chelated medium elements and a thickening agent. The product has the advantages that the fermentation liquor is directly used, so thatthe centrifuging or filtering process is avoided, and the cost is reduced; paecilomyces lilacinus is relatively good in nematode control effect, safe and free of pollution. The potash fertilizer increases the toughness of crop roots and can effectively prevent nematode infection; the micromolecular amino acid can be directly absorbed and utilized by the root system to promote rapid growth of thecrop root system or rapid recovery of the damaged root system; chitosan oligosaccharide is matched with organic matters, so that the influence of root-knot nematodes on crops can be reduced, and combined infection of bacteria or fungi on plant root systems is reduced. The microbial agent and the water-soluble fertilizer raw material can be mutually dissolved after being mixed, the solution is in astable colloid state, and conidia of the microbial agent can stably survive and keep biological activity for a long time.

The invention discloses a bio-organic fertilizer rich in various nutrient elements, belonging to a fertilizer. The bio-organic fertilizer is prepared from organic matters, active calcium, a saccharifying enzyme, activated carbon, a soil loosening agent, microelements, a biological rooting agent and a compound fertilizer. The bio-organic fertilizer rich in various nutrient elements is comprehensive in nutrients, is a full-nutrient calcium-carbon enzyme bio-organic fertilizer and is used for effectively degrading and correcting corrosion and damage of acid radical ions in soil to roots of crops according to the current arable soil situation and destruction of chemical fertilizers to the arable soil environment, so that the severely degraded arable soil is restored and improved, the ecological environment of the soil is restored, the morbidity of crops is reduced, the requirements of the crops on various nutrient elements within the growth period are met, the yield of the crops is greatly increased, the quality of the crops is greatly improved, and furthermore the sustainable development of agriculture in China is realized.

The invention discloses an alginic acid-containing urea-based compound fertilizer. The urea-based compound fertilizer is prepared from the following raw materials in parts by weight: 25-45 parts of urea, 15-28 parts of ammonium sulfate, 10-13 parts of monoammonium phosphate, 10-12 parts of potassium sulfate, 1-2 parts of alginic acid, 1-2 parts of boric acid, 1-2 parts of manganese sulfate, 5-10 parts of calcium superphosphate and 1-2 parts of paraffin oil. The alginic acid-containing urea-based compound fertilizer disclosed by the invention is high in utilization rate, good in slow-release effect and durable in fertilizer effect; obvious effects of increasing yield, promoting tip growth and unfolding leaves can be achieved after one-time application; yields of tea leaves and rice are respectively increased by 10-14% and 8-10%; and the yield of crops is effectively improved. The alginic acid-containing urea-based compound fertilizer can effectively improve the content of functional organic matter in soil and improve the soil environment.

The invention belongs to a slow-release urea, and in particular relates to a slow-release urea in which attapulgite powder, polyacrylamide and quartz limestone powder are taken as main slow-release preparations and a production method thereof. The slow-release urea consists of the following raw materials in parts by weight: 30-120 parts of attapulgite powder, 1-10 parts of polyacrylamide, 1-10 parts of quartz limestone powder and 860-968 parts of melt urea solution. The slow-release urea has the advantages of less investment, simple process, low operation cost and good slow release effect.

Various novel techniques are continuously popularized and applied with the continuous increase of the potato plantation scope and area. The invention provides a potato nutrient prepared by yeast hydrolysate, which belongs to the crops plantation field. The invention relates to a preparation method of a potato high-yield nutrient, which is capable of directly and effectively raising the per mu yield of the potato. The yeast has abundant nutrition and is composed of protein, carbohydrate, nucleic acid and other substances without toxicity and hormone, is a good single cell protein resource and contains eight amino acid and 14 mineral matters required by human and animal body, almost all the vitamins, nucleic acid, glutathione and the like. The present invention has the goals of overcoming the technical defects of the like technique and disclosing the preparation method of the potato nutrient prepared by yeast hydrolysate. The potato nutrient is a biological growth promoter for processing and producing potato by using chemical and biological technology according to the biological characteristics of yeast. Reports of crops output increased by using yeast cells in fertilizer and planting industry do not exist at present.

The invention discloses an organic fertilizer and a preparation method thereof, belongs to the technical field of soil fertilizers and soil improvement, and aims to solve the problems of reduction of soil nutrients, reduction of fertility, reduction of soil organic matter, deterioration of soil physical properties and weakening of disaster resistance of black soil in the prior art. The invention relates to the organic fertilizer. The organic fertilizer is prepared from the following main components in parts by weight: 1-6 parts of diatomite; 40-60 parts of livestock and poultry manure; 20-40 parts of pine cone peel and / or hazelnut peel; 8-15 parts of protein residue; 7-10 parts of coal slime; and 0.3-0.5 part of a complex microbial inoculant. The preparation method of the organic fertilizer comprises the following steps: preparing a complex microbial inoculant, and crushing the pine cone peel and the hazelnut peel into fragments; uniformly mixing the complex microbial inoculants and the fragments with diatomite, livestock and poultry manure, protein residues and coal slime, and adjusting the water content to obtain a mixture; fermenting and decomposing the mixture, and conducting turning to dissipate heat if the temperature of the mixture reaches 65 DEG C; and if the color of the mixture becomes brown or black brown and no stink exists, indicating that fermentation is completed, so as to obtain the organic fertilizer.

The present invention belongs to the technical field of agricultural fertilizers, and provides a special high-silicon rice fertilizer, a production method and an application method thereof, wherein the fertilizer comprises, by mass, 10-18% of silicon fertilizer granules, 30-38% of large granule urea, 25-28% of diammonium phosphate, and 6-35% of potassium chloride. According to the present invention, the high-silicon fertilizer is produced through extrusion granulation, and the produced high-silicon fertilizer is added to the special fertilizer for rice according to the ratio to obtain the special high-silicon rice fertilizer; and the obtained special high-silicon rice fertilizer is used for carrying out basal application on rice according to the use amount of 30-35 kg / mu, the yield is significantly increased, plant diseases and insect pests are reduced even eliminated, and the quality of rice is improved.

The invention relates to an agricultural machine tool, in particular to an anti-sinking laminating seeding machine which comprises a machine frame (1), a mulching film scroll (4) and a seed tray (6). The anti-sinking laminating seeding machine is characterized in that a roller (11) is installed at the position below the machine frame (1) and in front of the mulching film scroll (4), and the diameter of the roller (11) varies repeatedly to form a plurality of concave and convex ring-shaped waves (12). The anti-sinking laminating seeding machine has the advantages that the waves of the roller has special mechanical performance and can press loose soil in a wave trough, a plurality of high-density indentations with the sections in wave shapes are formed, namely the local load bearing strength of the soil is improved, pressure of the whole machine tool can be supported, the phenomenon that the machine tool sinks to stack soil is eliminated, uninterrupted rapid stable advancing is achieved, a film is laminated flatly and tightly, the fertilizer distributing quantity and seeding position are accurate, drought-resisting, water-saving and yield increase effects are extremely remarkable, and a new way is opened up for popularization of the film-laminating technology.

The invention relates to a micro-ridge film-mulched side-sown agronomic method for dry farming potatoes. The method comprises the following steps: (a) ditching and fertilizing; (b) seeding; (c) ridging; (d) spraying herbicides; (e) laying films; (f) repeating the steps (a) to (e). According to the method, one-film double-ridge is adopted, so that the inter-line land exposed area during single-line film mulching is reduced, and the invalid evaporation loss of soil moisture is lowered effectively.

The invention provides a compound monohydrate sodium zinc decaborate Na2Zn2B10O18.H2O and a preparation method therefor. Sodium decaborate and zinc sulfate or zinc chloride are reacted at high temperature under high pressure to produce water liquid products. The crystals are subjected to fluid bed drying or spray drying to form powder products. The compound can be hydrolyzed fully, the dissolving speed is rapid, the compound is of great significance to be used for agricultural production and especially used for crops needing more boron and zinc, and the yield increases by 20-30%.

The invention discloses an in-situ enrichment method for nematodes in soil. The method comprises the following steps: (1) weighing red soil from a test plot, adding agricultural organic wastes and a microbial agent, fully and uniformly mixing the materials, and carrying out adaptive culture on the nematodes in a natural field environment to obtain the nematodes preserved in an adaptive culture medium; wherein the nematodes are bacterial-feeding nematodes; (2) backfilling the culture medium rich in the bacterial-feeding nematodes into the soil of the test plot; and (3) performing field management on the soil of the test plot, and maintaining the soil moisture to be stable. According to the method, the in-situ growth environment of the nematodes is improved, and the reproductive capacity and the yield of the protorhabditis nematodes are improved; on the basis of a biological introduction long-term positioning test of the Yingtan Red Soil Ecological Experiment Station of Chinese Academy of Sciences, the total number of the soil nematodes in red soil and the number of the protorhabditis nematodes are increased; and field trials show that the red soil alkaline, activity of acid phosphatase and the content of available phosphorus are remarkably increased by adding the protorhabditis nematodes, and the growth condition and quality of corn are improved.

The invention discloses a special potassium fertilizer for drip irrigation. The special potassium fertilizer comprises a mixture of a potassium source, a magnesium source and a sulfur source; in parts by weight, the special potassium fertilizer comprises 40-80 parts of the potassium source, 6-30 parts of the magnesium source and 8-30 parts of the sulfur source. The fertilizer is directly and moderately applied to root systems and middle lamellae in a proper time, and a small amount of the fertilizer is often applied, so that timed and located fertilization can be realized, the fertilizer can be conveniently absorbed by crops, the loss can be reduced, the fertilizer efficiency can be brought into full play, and soil can be improved. The fertilizer is good in solubility, high in dissolution speed, impurity-free and suitable for various drip irrigation equipment. The fertilizer efficiency is high, the yield-increasing and income-increasing effects are remarkable, the fertilizer utilization rate can be increased by 20-30% in drip irrigation under a plastic film compared with conventional fertilization, and the income is remarkably increased.

The invention relates to the technical field of chemical fertilizer preparation, in particular to a carbon enzyme active acid combined water-soluble fertilizer and a preparation method thereof. The water-soluble fertilizer comprises 13%-25% of amino acid, 16%-25% of humic acid, 10%-20% of nitrate nitrogen, 16%-31% of water-soluble phosphorus, 15%-25% of potassium nitrate, 12%-23% of potassium dihydrogen phosphate, 15%-20% of copper, 15%-20% of iron, 15%-20% of manganese and the like. Carbon enzyme active acid is added into the water-soluble fertilizer, so that soil looseness can be treated, air permeability is good, root systems are developed easily, and green moss is reduced; soil acid-base balance can be adjusted, residual fertilizers are activated, and a root growth environment is created; and root diseases are reduced. The nitrate nitrogen, water-soluble phosphorus, potassium nitrate and potassium dihydrogen phosphate are added into the water-soluble fertilizer for balanced supply,so that the water-soluble fertilizer is absorbed easily by crop roots and the fruit swelling effect is fast. The medium trace elements such as copper, iron, manganese and zinc are added into the water-soluble fertilizer, so that comprehensive and balanced nutrient substances can be provided for plants. Occurrence of crop nutrient deficiency is prevented, and crop stress resistance is enhanced.