1470results about "Liquid fertilisers" patented technology

The invention relates to the technical field of organic fertilizers and planting of watermelons and muskmelons, and provides a special fertilizer for milk irrigated watermelons and muskmelons and a double-stubble planting method for sweetness enhancement of milk irrigated watermelons and muskmelons. The special fertilizer for the milk irrigated watermelons and muskmelons comprises black goat manure, sophora alopecuroide, sesame seed meal, bran, organic fresh milk, brown sugar and zymophyte. The black goat manure is pulverized into powder by a pulverizer, the sophora alopecuroide is pulverizedinto 1 cm to 2 cm, and the ratio of the black goat manure, the sophora alopecuroide, the sesame seed meal, the brans, the organic fresh milk, the brown sugar and the zymophyte is 2700-3200: 80: 50: 150: 5: 1. The double-stubble planting method for sweetness enhancement of the milk irrigated watermelons and muskmelons comprises the following steps: selection of a nursery seedling plate and soil, cleaning and germination accelerating of seeds, soil preparation, transplanting, irrigation, topdressing, shaping and forking of watermelon and muskmelon vines and fruit bearing of the watermelons and the muskmelons. The problems that in an existing watermelon and muskmelon planting process, soil nutrients are damaged due to the fact that chemical fertilizers are used for a long time, and the sweetness of melons is reduced are solved.

The invention discloses a production method of distiller's grain fermentation liquid fertilizer specially applied to roxburgh rose. The distiller's grain fermentation liquid fertilizer is prepared bythe step of evenly mixing 50 to 80 parts of distiller's grain fermentation extracting solution, 0.5 to 1 part of microelement, 5 to 10 parts of seaweed meal, 5 to 10 parts of natural active organism,2 to 5 parts of potassium bicarbonate, 2 to 5 parts of natural active organism and 2 to 5 parts of natural surface active agent. A preparation method of the distiller's grain fermentation extracting solution comprises the steps: evenly stirring 50 to 80 parts of distiller's grain, 50 to 150 parts of rice washing water, 1 to 2 parts of EM microflora fermentation liquid and 0.5 to 1 part of sugar, performing composting fermentation at the room temperature to obtain a distiller's grain fermentation material, stirring and extracting through a sodium carbonate water solution, filtering and performing evaporation and condensation on obtained filtrate until the density is 1.1 to 1.2 to obtain distiller's grain fermentation extracting solution. The distiller's grain fermentation liquid fertilizerdisclosed by the invention has a good use effect, meanwhile can effectively prevent pest and disease damage to the roxburgh rose and is high-efficiency environment-friendly liquid fertilizer.

The invention discloses a potassium fulvate chelated macroelement water-soluble fertilizer with stress resistance and growth promotion functions, and relates to the technical field of water-soluble fertilizers, the potassium fulvate chelated macroelement water-soluble fertilizer comprises the following raw materials by weight: 167-210 parts of mineral source potassium fulvate, 450-460 parts of potassium nitrate, 300-310 parts of urea, 150-160 parts of potassium dihydrogen phosphate, 30-40 parts of potassium sulfate, 15-25 parts of EDTA-disodium, and 5-15 parts of citric acid. 0.5 to 1.5 parts of brassinolide and 4 to 6 parts of polyaspartic acid; according to the potassium fulvate chelated macroelement water-soluble fertilizer with the stress-resistant and growth-promoting functions, through chelation cooperation of potassium fulvate and nitrogen, phosphorus and potassium, the solubility of the chelated phosphorus element in water is increased, and the chelated phosphorus element can be more uniformly distributed in soil; by adopting an EDTA-disodium and citric acid composite chelating system, volatilization and loss of nitrogen elements are reduced, the problem of precipitation of calcium, magnesium and phosphorus is solved, and the soil conditioner is suitable for hard water areas and especially has outstanding performance in saline-alkali soil and arid areas.

The invention provides a method for preparing carbon quantum dot reinforced subcritical artificial humic acid and applying the carbon quantum dot reinforced subcritical artificial humic acid to a rice field, which comprises the following steps: collecting organic wastes, and drying, grinding and sieving the organic wastes to obtain pretreated raw materials; the preparation method comprises the following steps: mixing pretreated raw materials with water, reacting in a hydrothermal carbonization system at 200-280 DEG C for 1-3 hours, modifying through acid-base pretreatment, adjusting a reaction medium or an additive, and naturally cooling to obtain a natural substance subjected to hydrothermal carbonization; carrying out solid-liquid separation on the natural substance subjected to hydrothermal carbonization by using a 100-mesh coarse filter screen to obtain solid-phase hydrothermal carbon and liquid-phase artificial humic acid; carrying out purification treatment on the liquid-phase artificial humic acid for 48 hours by using a dialysis bag to obtain carbon quantum dots and characterizing the carbon quantum dots; the carbon quantum dot reinforced subcritical artificial humic acid is applied to a rice field, and is additionally applied in a fertilization period. Compared with a traditional composting technology, the scheme has the advantages that the carbon conversion rate is increased by 2-3 times, the soil fertility can be improved, and the rice yield is increased.

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

The invention relates to the technical field of agricultural fertilizers, and particularly discloses a polypeptide fish protein flushing water-soluble fertilizer and a preparation method thereof, the water-soluble fertilizer is prepared from the following raw materials: unrotten small fish or fish sewer, edible cane sugar or brown granulated sugar, a self-prepared fish protein enzymolysis agent, a self-prepared fish protein anaerobic fermentation inoculant and water; the preparation method comprises an enzymolysis stage and a fermentation stage. The compound fertilizer can be used as a nitrogen fertilizer to replace a traditional chemical nitrogen fertilizer, or is matched with a trace element fertilizer in a compound fertilizer to be used in crop planting; the water-soluble fertilizer has the beneficial effects that the water-soluble fertilizer can supplement soil protein amino acid fertilizer nutrition and increase the content of nutritional ingredients in crops, fermented polypeptide micromolecule sugar can be directly absorbed by the crops to improve the taste, ecological organic planting is realized, meanwhile, the planting cost is reduced, and the water-soluble fertilizer is suitable for fruit and vegetable planting families, farms, picking gardens, greenhouse farmers and the like, is simple and easy to operate, and is suitable for popularization and application. Raw materials are easy to collect, low in cost and obvious in effect.

The invention relates to the technical field of agriculture, in particular to a plant nutrient solution for saline-alkali soil improvement and a preparation method thereof. The invention relates to a preparation method of a plant nutrient solution for improving saline-alkali soil. The preparation method comprises the following steps: preparing NO3-intercalated layered double hydroxides and acid modified calcium-based montmorillonite; preparing humic acid chelated calcium magnesium powder; preparing a binary compound; and preparing the plant nutrient solution. The preparation method comprises the following steps: preparing NO3-intercalated layered double hydroxides from calcium nitrate tetrahydrate and aluminum nitrate nonahydrate, carrying out acid modification on calcium-based montmorillonite by using dilute sulphuric acid, purifying humic acid, and mixing with calcium chloride and magnesium chloride hexahydrate to prepare humic acid chelated calcium magnesium powder. Finally, the three components are added into pig excrement fermentation liquor to prepare a plant nutrient solution, an adsorption-replacement-leaching closed loop can be formed, the desalination and alkali reduction efficiency is remarkably improved, the soil structure is improved, the effect of synergistically improving the saline-alkali soil is achieved, and therefore plant growth is promoted.

The present invention belongs to the technical field of biomass resource utilization and microbial fertilizers, and specifically relates to a fertilizer based on oil-tea camellia cattail, a preparation method and its application. The fertilizer described in the present invention is prepared by a collaborative fermentation process of Aspergillus niger, Phanerochaete chrysosporium and Bacillus subtilis. The obtained fermentation product is separated into solid and liquid to obtain a solid, the solid being a solid fertilizer, and the liquid being a foliar fertilizer after post-treatment. Both can be used for the cultivation of crops such as tangerines and oil-tea camellias. Based on the microbial collaborative fermentation process, the content of anti-nutritional factors tannin and tea saponin in the obtained solid fertilizer is significantly reduced, which is less than 1.8 g / kg and 0.1% respectively on a dry basis, while maintaining a seed germination index higher than 95%. According to a planting comparative test, the average yield per mu of oil-tea camellias using the solid fertilizer and liquid fertilizer obtained in this application increased by 12%. The average yield per mu of tangerines increased by about 11%, and the sugar, vitamin C, and trace element contents in tangerines were higher than those using traditional fertilizers.

The invention discloses an element liquid fertilizer for promoting nutrient absorption and a preparation method thereof, and belongs to the technical field of fertilizers. Comprising monoammonium phosphate; urea; potassium nitrate; cake fertilizer leach liquor; trace elements; a wetting agent; a stabilizer; a biological agent; an adsorbent; deionized water; the preparation method of the adsorbent comprises the following steps: A1, taking loofah sponge powder, and removing lignin and hemicellulose to obtain loofah sponge cellulose powder; a2, mixing the loofah sponge cellulose powder, deionized water, a chitosan solution and plant ash, mechanically pulping uniformly, performing vacuum freeze-drying treatment to form holes, crushing and grinding to obtain the adsorbent, root development can be promoted, elongation and thickening of stems are promoted, the photosynthetic rate of plants is increased, and the crop yield is increased.

The invention belongs to the field of fertilizers, and particularly relates to a foliar fertilizer with high amino acid synthesis efficiency and a preparation method thereof.The preparation method comprises the steps that spermidine is taken to be subjected to formic acid esterification modification, and formic acid esterification spermidine is obtained; the preparation method comprises the following steps: hydrolyzing 2, 4-epibrassinolide to obtain carboxylated brassinolide; under the action of Tween, carboxylated brassinolide and formic acid esterified spermidine are combined to form a fertilizer base full of emulsified liquid drops; and adding other nutrients to obtain the foliar fertilizer. The leaf fertilizer for increasing the amino acid content of rice can increase the content of amino acids, especially lysine, in grains on the premise of increasing the yield of rice, and nitrogen absorption and utilization of the rice grains are improved.

The invention belongs to the technical field of environment, and relates to a method for preparing a fulvic acid-rich forestry liquid fertilizer by quickly decomposing municipal sludge, which comprises the following steps: carrying out hydrodynamic cavitation treatment on municipal sludge, adding a reaction reagent into the municipal sludge to carry out Fenton-like reaction, adding an adsorbent into the municipal sludge to carry out adsorption treatment, and carrying out solid-liquid separation to obtain the fulvic acid-rich forestry liquid fertilizer. The fulvic acid type forestry liquid fertilizer is obtained. The hydraulic cavitation treatment is combined with the Fenton-like reaction and the adsorption treatment, so that the problems of high heavy metal activation risk and serious ammonia nitrogen loss in the traditional process for preparing the fulvic acid-rich fertilizer from the sludge are effectively solved, the rapid decomposition of the municipal sludge is realized, and the yield of the fertilizer is improved. The fulvic acid-rich forestry liquid fertilizer with the functions of improving soil, promoting plant growth and the like is prepared, and the purpose of efficient, environment-friendly and low-cost sludge resource utilization is achieved.

The invention relates to the technical field of agriculture, in particular to a preparation method and an application method of a zinc-rich cadmium-reducing yield-increasing foliar fertilizer. The specific technical scheme is as follows: the zinc-rich cadmium-reducing yield-increasing foliar fertilizer is prepared from the following components in percentage by mass: 20 to 30 percent of porous chitosan, 30 to 40 percent of L-malic acid and 40 to 50 percent of nano zinc oxide. The technical problem that in the prior art, the zinc content of rice cannot be increased, meanwhile, the rice yield cannot be increased, and the cadmium content of rice cannot be reduced is solved.

The invention relates to a low-temperature preparation method of a high-activity chelated zinc fertilizer, and belongs to the technical field of fertilizer chemical industry. Aiming at the problems of chelate decomposition and high energy consumption caused by an existing high-temperature process, ethylene diamine tetraacetic acid is added step by step in a low-temperature environment of 35-45 DEG C: firstly, an initial chelating solution is formed by adding 0.8-1.0 time of theoretical chelating molar weight, and then a sodium hydroxide solution is dropwise added to control the pH to be 3.5-4.5 within 60-120 minutes and is stable; and then supplementing ethylenediaminetetraacetic acid which is 0.1-0.2 time of the theoretical amount, reacting for 60-120 minutes to achieve chelation balance, and finally stirring, aging and naturally cooling. The method obviously improves the chelating efficiency and the product stability, reduces the energy consumption, and is used for preparing the efficient and stable liquid zinc fertilizer.

The invention relates to the technical field of fertilizers and pesticides for agricultural production, and discloses a liquid pesticide fertilizer for preventing and treating root-knot nematodes in a water-fertilizer integrated system and application thereof, and the liquid pesticide fertilizer is prepared from the following components: a plant source nematicide, a biocontrol inoculant, a macroelement and medium trace element fertilizer, a boron cross-linking agent, a modified polycarboxylic acid dispersing agent, a microbial protective agent and the like. The preparation method comprises the steps of biological phase pretreatment, matrix phase construction, oil phase micro-emulsification, multiphase fusion and dynamic crosslinking. Through trehalose gradient permeation pretreatment, the survival rate of biocontrol bacteria in a high-salt matrix is increased; a boric acid ester bond dynamic cross-linked network is constructed by using a variable pH adjusting process, so that the system is endowed with shear thinning characteristics, and the contradiction between suspension stability and drip irrigation fluidity is solved; and the chelating dispersion effect of the modified polycarboxylic acid dispersing agent is matched, so that the generation of precipitates is effectively inhibited, and stable coexistence and synergistic interaction of the pesticide, the fertilizer and the bacteria are realized.

The invention provides an efficient breeding method of cremastra appendiculata, and relates to the technical field of cremastra appendiculata breeding. The efficient breeding method comprises the steps of soil preparation and land selection, strain laying, wood laying, gap filling, seed dressing, sowing, shading and management. According to the method, the specific method is adjusted, humus soil containing a compound microbial agent is adopted to fill gaps among wood, then sowing is conducted, the germination rate of seeds is increased, sawdust, perlite, coco coir, decomposed organic fertilizer, bamboo charcoal powder and pyroligneous liquor are used for seed dressing before sowing, the air permeability of a matrix is improved, seeds are prevented from being rotten due to accumulated water, and breeding of pathogenic bacteria is inhibited; the water-retaining property of the substrate is increased; and symbiotic bacteria planting and seed metabolism are promoted. The foliar fertilizer containing the garlic extracting solution, the onion leaching solution, the monopotassium phosphate, the boric acid and the urea is adopted, elements needed by growth of the rhododendron simsii are provided, the strong insecticidal and bactericidal effects are achieved, and therefore the incidence rate of diseases and pests is reduced, and the seedling survival rate and the breeding efficiency of the rhododendron simsii are improved.

The invention discloses a nutrient solution capable of increasing vitamin C of plants and a preparation method of the nutrient solution, and relates to the technical field of plant nutrition and fertilizers. The nutrient solution contains additives such as 2-keto-L-gulonic acid or 2-keto-L-gulonic acid salt and the like. According to the invention, 2-keto-L-gulonic acid or 2-keto-L-gulonic acid sodium or 2-keto-L-gulonic acid potassium and the like are used as core raw materials of the nutrient solution for plants, and are compounded with basic nutrient raw materials and additives required by the plants to prepare the plant nutrient solution and the composite nutrient solution. The 2-keto-L-gulonic acid and the 2-keto-L-gulonate in the plant body can be catalyzed and converted into the vitamin C, so that the content of the vitamin C in the tree body is remarkably increased.

The invention discloses a liquid quantum dot fertilizer and a preparation method and application thereof.The preparation method comprises the steps that treated rice straw is smashed through a smashing machine, the smashed rice straw is placed in a closed container, an ammonia water solution is added, and after even stirring and mixing are conducted, incubation is conducted in the closed container in time under illumination; after incubation is completed, straw residues are twisted and removed, obtained leachate is liquid carbon quantum dot fertilizer, and the straw residues are returned to the field; or the incubated straw residues and the ammonia water solution are subjected to ultrasonic treatment continuously, the straw residues are removed, a liquid carbon-silicon quantum dot fertilizer is generated, and the straw residues are returned to the field. The two liquid quantum dot fertilizers have good compatibility with trace element foliar fertilizers, amino acid-containing foliar fertilizers or pesticides, can improve the crop utilization rate of the trace element foliar fertilizers and the amino acid-containing foliar fertilizers, and can realize simultaneous fertilization and disease control of crops when being mixed with the pesticides. The technology is convenient, economical, practical and efficient.

The invention provides an amino acid water-soluble fertilizer as well as a preparation method and application thereof, and relates to the technical field of amino acid water-soluble fertilizers. The amino acid water-soluble fertilizer comprises compound amino acid, a microbial fermentation product, inorganic salt, a surfactant, a dispersing agent and a preservative, the microbial fermentation product is obtained by aerobic fermentation of radix puerariae and rhizoma atractylodis through a complex microbial inoculant; the compound amino acid is composed of animal protein hydrolyzed amino acid and vegetable protein hydrolyzed amino acid. According to the water-soluble fertilizer disclosed by the invention, through the synergistic interaction of the compound amino acid and the microbial fermentation product, multi-objective optimization of nutrition supply, stress resistance regulation and metabolism enhancement is realized, the yield and the quality of crops are remarkably improved, an efficient and environment-friendly solution for increasing the yield and improving the quality is provided for the crops, and the water-soluble fertilizer has a remarkable agricultural application value.

The invention discloses a method for producing a liquid bacterial fertilizer by using traditional Chinese medicine residues, and belongs to the technical field of liquid bacterial fertilizers. The method specifically comprises the following steps: (1) pretreatment of traditional Chinese medicine residues: collecting decocted traditional Chinese medicine residues, removing impurities, crushing and extruding; (2) adding auxiliary materials: adding crop straws, brown sugar, soybean meal and a fermentation inoculant, and uniformly stirring; (3) fermentation and decomposition: putting the mixture into a fermentation tank for fermentation and decomposition, regularly turning over the mixture through a turner during fermentation and decomposition, and stopping fermentation when the color of the mixture is dark brown, no odor exists and the flavor of distiller's yeast exists; (4) extruding and filtering: extruding and filtering, and collecting filtrate to obtain the traditional Chinese medicine residue liquid bacterial fertilizer. The traditional Chinese medicine residues are converted into the liquid bacterial fertilizer, so that the soil quality can be improved, the crop yield can be increased, the dependence on chemical fertilizers and pesticides is reduced, and the goal of sustainable agriculture is achieved.

The invention discloses an efficient acclimatization and transplantation method for sweet potato virus-free test-tube plantlets, which comprises the following steps: removing fibrous roots from sweet potato virus-free test-tube plantlets which are subcultured for 20-30 days through virus detection, treating the sweet potato virus-free test-tube plantlets for 24 hours through an acclimatization nutrient solution, directly planting the sweet potato virus-free test-tube plantlets into a transplantation matrix, keeping the temperature of a culture area at 28 + / -2 DEG C, keeping the relative humidity at 75-80%, and culturing for 3 days under weak light, and supplementing carbon dioxide to the culture area until the concentration is 1000-1200ppm, culturing for 20-30 days under normal illumination, transferring the sweet potato virus-free test-tube plantlet with the survival zone transplanting matrix into a hole tray, filling a seedling culture matrix to ensure that each hole of the matrix is full, watering, carrying out shading treatment for 3-5 days, and transferring to a normal illumination condition for culturing, so as to obtain the sweet potato virus-free test-tube plantlet. According to the method, the seedling age of virus-free seedling transplanting is reduced to 20-30 days, the cost is saved, the transplanting survival rate is remarkably increased, the key technical obstacle from test-tube plantlets to propagation seedlings is broken through, and the sweet potato virus-free test-tube plantlets can be quickly applied to production.

The invention discloses an impurity removal device and an impurity removal method for salt separation crystallization mother liquor of chemical high-salt wastewater, and belongs to the technical field of comprehensive utilization of water resources. The impurity removal device comprises a high-density sedimentation tank for receiving high-salinity wastewater salt separation crystallization mother liquor; the first-stage reactor is connected with the high-density sedimentation tank through a pipeline; the second-stage reactor is connected with the first-stage reactor through a pipeline; the three-stage reactor is connected with the filtering device through a pipeline, the filtering device is connected with the mesoporous adsorption tower through a pipeline, the mesoporous adsorption tower is connected with the chelating resin tower through a pipeline, and the chelating resin tower is connected with the modified zeolite adsorption tower through a pipeline. The method has the advantages that equipment configuration is reasonable, and good stability and operability are achieved; the method provided by the invention has outstanding process route originality and low treatment cost, and realizes liquid phase treatment and high-valued cyclic utilization of the chemical high-salinity wastewater salt separation crystallization mother liquor.

The invention discloses a high-calcium suspension fertilizer as well as a preparation method and application thereof, and relates to the technical field of chemical fertilizer production, the high-calcium suspension fertilizer comprises the following components in parts by weight: 20-30 parts of a macroelement fertilizer, 10-15 parts of a medium element fertilizer, 3-5 parts of a microelement fertilizer, 0.5-3 parts of an auxiliary agent and 30-50 parts of deionized water; the macroelement fertilizer is prepared from 30-50 parts of nitrogen fertilizer, 20-30 parts of phosphate fertilizer and 15-20 parts of potash fertilizer; the medium element fertilizer is modified nano calcium carbonate and magnesium carbonate; the trace element fertilizer is prepared from zinc amino acid, sodium tetraborate, ferric sodium ethylenediaminetetraacetate, molybdenum sodium ethylenediaminetetraacetate, manganese sulfate monohydrate and copper sulfate pentahydrate. Therefore, the nano calcium carbonate can be quickly absorbed by the plants, so that calcium ions can be supplemented in time in the growth process of the plants, and the growth of the plants is accelerated.

The invention discloses a fruit and vegetable grafting wound healing nutrient solution containing polysaccharide complex enzyme and a preparation method, belongs to the technical field of agricultural biochemical preparations, and aims to solve the technical problems of low removal efficiency of necrotic tissues at grafting wounds and high risk of microbial infection. According to the technical scheme, the nutrient solution is characterized by being prepared from the following raw material components in parts by weight: 0.3 to 0.8 part of polysaccharide, 1 to 5 parts of cellulase, 0.5 to 2.5 parts of pectinase, 1 to 5 parts of glycerol and 90 to 100 parts of water. Wherein the pH value of the nutrient solution is adjusted to 5.0-6.5 by using a phosphate buffer agent, the polysaccharide is composed of chitosan and sodium alginate, the mass ratio of the chitosan to the sodium alginate is 1: 0.5-1: 2, the activity of cellulase in the nutrient solution is 100-500 U / mL, and the activity of pectinase in the nutrient solution is 50-250 U / mL. The nutrient solution is mainly used for promoting fruit and vegetable grafting wound healing, and application verifies that the nutrient solution can effectively improve wound healing quality and reduce infection risk in the grafting process of fruits and vegetables such as cucumbers, eggplants, peppers, tomatoes, litchis and oranges, and has a good application effect.

The invention discloses a method for preparing an amino acid water-soluble fertilizer by processing animal blood, which belongs to the technical field of water-soluble fertilizer preparation, and comprises the following steps: step 1, collecting animal blood, and performing centrifugal treatment to remove part of impurities and blood cell fragments in the blood to obtain a relatively pure plasma part; 2, compound protease is added into the pretreated animal blood for an enzymolysis reaction, meanwhile, sodium selenite is added into an enzymolysis system, and the sodium selenite serves as a selenium source; 3, after enzymolysis is completed, a compound microbial agent is added into enzymatic hydrolysate, and aerobic fermentation is carried out; according to the method for preparing the amino acid water-soluble fertilizer through animal blood processing, the structural design is reasonable, the added selenium element can enhance the stress resistance of plants and improve the quality of agricultural products, and an acidolysis method or an enzymolysis method and a liquid fertilizer or solid fertilizer production mode are flexibly selected, so that the optimal economic benefits and social benefits are achieved.

The invention belongs to the technical field of agricultural fertilizers, and particularly relates to a cold-resistant feather amino acid leaf fertilizer and a preparation method thereof.The cold-resistant feather amino acid leaf fertilizer is prepared from, by mass, 86%-95% of feather source amino acid-oligopeptide mixed liquor, 3%-8% of L-lysine, 1%-3% of chelated microelements, 0.5%-1.0% of trehalose, 0.5%-1.2% of polyether modified trisiloxane, 0.5%-1.0% of sodium polyaspartate and 0.1%-0.5% of preservative, wherein the pH (Potential of Hydrogen) value is 5.0 to 6.5; the chelated trace elements are EDTA (Ethylene Diamine Tetraacetic Acid) or amino acid chelates of at least three elements of zinc, iron, manganese, copper and boron. By optimizing a feather pretreatment process and a multi-enzyme synergistic system design and combining functional component compounding, the hydrolysis efficiency and the product activity are remarkably improved, and meanwhile, the permeability and the nutrient transfer effect of the foliar fertilizer under a low-temperature condition are enhanced.

The invention discloses bacillus subtilis subsp.deserticola, nano-selenium synthesis application of the bacillus subtilis subsp.deserticola and application of the bacillus subtilis subsp.deserticola to prevention and treatment of plant virus diseases, and belongs to the technical field of microorganisms. The bacillus subtilis subsp. Deserticola KBD-4 has better selenium tolerance and can reduce selenium salt into nano-selenium, and meanwhile, a bacterial solution and a nano-selenium active bacterial solution which are generated after the strain is fermented have a better inhibition effect on plant viruses such as TMV, CMV, PVY and TSWV, so that the plant virus diseases can be better prevented and treated. Besides, a biological source nano-selenium potassium fertilizer can be prepared by adding a high-potassium trace element additive into the nano-selenium active bacterial liquid, after root irrigation, the disease-resistant and growth-promoting effects on the tomatoes are better, the tomato yield is increased, the nutritional quality of the tomatoes is further improved, selenium-rich agricultural products meeting the national standard are produced, and the method is worthy of popularization and application. The method has good practical application value in production.

The invention relates to the technical field of liquid selenium fertilizers, and discloses an organic peptide chelated selenium liquid selenium fertilizer and a preparation method thereof.The organic peptide chelated selenium liquid selenium fertilizer comprises chelated selenium and organic peptide, the proportion of the chelated selenium is larger than or equal to 95%, and the organic peptide is plant source oligopeptide with the molecular weight ranging from 1000 Da to 3000 Da; according to 1 L of the liquid fertilizer, the formula comprises 8 g of chelated selenium, 5-10 g / L of potassium, 8 g / L of phosphorus, 0.1-0.5 g / L of vitamin B1 / B12, 5-10 g / L of a plant source peptide solution, 5-10 mL / L of glycerin and 0.5-1 mL / L of a surfactant, and the pH value is adjusted to 6.5-7.5. Organic peptide chelated selenium (the proportion of chelated selenium is larger than or equal to 95%) is sprayed on leaf surfaces, the limitation of uneven soil selenium content is directly avoided, the organic peptide chelated selenium is absorbed by crop leaves in a molecular-level coordinate bond mode, and interference of the soil environment (such as pH and microorganisms) on the selenium form is avoided; the selenium content fluctuation of crops is less than or equal to 5%, and the standard reaching rate is greater than or equal to 98%, so that the applicability and high efficiency of the liquid selenium fertilizer are improved, the transport path of selenium in crops is shortened, and the absorption efficiency is improved by 3-5 times.

Provided is an efficient combined nano iron suspension fertilizer. The suspension fertilizer efficient combined nano iron is prepared from ingredients including, in mass percentage: 10.0% to 20.0% of FeSO4; 0.5% to 2.0% of zero-valent iron nanoparticles (nZVI); 5.0% to 10.0% of magnetic iron oxide nanoparticles (Fe3O4-NPs); 30.0% to 50.0% of citric acid; 1.0% to 5.0% of a dispersant 5040; 0.2% to 1.0% of xanthan gum; 1.0% to 5.0% of magnesium aluminum silicate; and water as a balance.

The invention provides a charcoal-based microalgae fertilizer as well as a preparation method and application thereof, the method adopts a mode of co-fermentation of charcoal and microalgae to fix microalgae on charcoal, and co-fermentation is performed to prepare the charcoal-based microalgae fertilizer. The biochar-based microalgae fertilizer can significantly improve the crop yield, increase the chlorophyll content of crops, promote healthy growth of plants, optimize the pH value of soil, enhance the water and fertilizer retention capacity of soil, and significantly improve the soil nutrients and soil enzyme activity, and has significant advantages in the aspects of nutrition supply, soil health, environmental protection, crop quality improvement and the like. The biochar-based microalgae fertilizer has two forms of liquid and dry powder, can be flexibly used according to a specific agricultural production mode, has the advantages of easily available raw materials and simple preparation, is a sustainable fertilizer source, can comprehensively improve the soil fertility and the crop stress resistance, reduces the dependence on chemical fertilizers, and reduces the environmental pollution problem in agricultural production.

According to the method for promoting the calcium element to be transported to the overground part of the plant, the formula of a related nutrient solution is reasonably adjusted, particularly, nickel element with specific concentration is introduced, so that the nickel element and other nutrient elements play a role together, and the calcium element is effectively promoted to be transported to the overground part of the plant; therefore, further growth and development of the plants are effectively promoted, and the yield and quality of the plants are improved.