431results about "Nitrate fertilisers" patented technology

The invention discloses a biomass charcoal composite hydrogel slow-release fertilizer as well as a preparation method and application thereof, and belongs to the field of composite hydrogel and fertilizer preparation. The invention provides a biomass charcoal composite hydrogel slow release fertilizer, which comprises biomass charcoal, hydrogel fixed on the pores and surface of the biomass charcoal, and an element fertilizer mixed in the hydrogel, and the hydrogel is prepared from metal cations and alginate. The invention provides a strategy of'in-hole in-situ gelation ', hydrogel is prepared in situ in gaps of the biochar, and the biomass charcoal composite hydrogel slow-release fertilizer is prepared. The biochar and the hydrogel in the slow-release fertilizer are high in bonding strength and mechanical strength, so that the slow-release fertilizer has the slow-release function of the fertilizer and also has the capability of improving soil.

The invention relates to the technical field of compound fertilizers, and discloses a boron-zinc-molybdenum synergistic compound fertilizer, which is prepared from the following raw materials in parts by weight: calcium nitrate, ammonium polyphosphate, potassium sulfate, magnesium sulfate, disodium octoborate tetrahydrate, sugar alcohol chelated zinc, sodium molybdate and a synergistic auxiliary agent, the feed additive is prepared from a feed additive, an activator, 5-alginic acid oligosaccharide, aminolevulinic acid, sugar alcohol chelated magnesium, an antagonist, a stress-resistant enhancer and a coating material. According to the boron-zinc-molybdenum synergistic interaction compound fertilizer and the preparation process thereof, the disodium octoborate tetrahydrate, the sugar alcohol chelated zinc and the sodium molybdate are compounded according to a specific proportion, antagonism is avoided through proportion limitation, the synergistic effect of the three elements is remarkably enhanced, and the problem that a single element is insufficient or excessive is solved; chelated elements such as sugar alcohol chelated zinc and sugar alcohol chelated magnesium are combined with an activating agent (humic acid chelated calcium and silica sol) to form a gel-state chelate, so that the trace elements can be prevented from being fixed by soil, and the transfer efficiency of the trace elements in crops is improved.

The application relates to an organic-inorganic compound fertilizer containing functional microorganisms and a production method thereof, and relates to the technical field of fertilizers. The fertilizer comprises an inorganic core layer, an organic coating layer and a functional microorganism outer layer. The functional microorganism outer layer comprises the following components in mass fractions: 10-15 parts of compound functional microorganisms, 5-10 parts of synergistic growth-promoting microorganisms, 2-3 parts of trehalose, 1-2 parts of mannitol, 10-15 parts of sodium alginate, 8-10 parts of chitosan, 2-4 parts of yeast extract and 30-40 parts of modified active carbon carriers. The production method comprises the following steps: preparing the inorganic core layer, preheating the inorganic core layer, spraying the organic coating layer material to coat the surface, and obtaining a preliminary product with the organic coating layer; coating the functional microorganism outer layer material on the surface of the organic coating layer of the preliminary product, low-temperature drying and screening, and obtaining the organic-inorganic compound fertilizer containing the functional microorganisms. The application has the effects of improving the slow-release effect of the fertilizer and the survival rate of the microorganisms.

The invention relates to the technical field of pineapple planting, in particular to a management and control method for reducing malformed fruits caused by non-development of pineapple kernels. The management and control method comprises the steps of regulating and controlling nutrition before a flowering period, optimizing a microenvironment in a flowering period, strengthening management in a young fruit period and comprehensively preventing and controlling diseases and insect pests. The operation of regulating and controlling the nutrition before the flowering stage comprises the following steps: supplying a water-dispersible slow-release fertilizer by adopting a drip irrigation system from a seedling stage to a flowering accelerating stage; the mass ratio of nitrogen to phosphorus to potassium in the water dispersible slow-release fertilizer is 1: (1.1-1.3): (1.4-1.6); the operation of optimizing the microenvironment in the flower forcing period comprises the following steps: forcing flowers in cloudy days at the temperature of 18-25 DEG C or at dusk; after the inflorescence develops, a mixed solution of ethephon and gibberellic acid is adopted for core filling; the operation of strengthening young fruit stage management comprises the following steps: in a young fruit stage, spraying a mixed aqueous solution of sugar alcohol calcium and monopotassium phosphate to leaf surfaces; the operation of comprehensively preventing and controlling diseases and insect pests comprises the following steps: covering with breathable insect-preventing fruit bags 20 days after flowers wither, and releasing natural enemies to control the cardinal number of pests.

Disclosed herein are methods of increasing nitrogen fixation in a non-leguminous plant. The methods can comprise exposing the plant to a plurality of bacteria. Each member of the plurality comprises one or more genetic variations introduced into one or more genes or non-coding polynucleotides of the bacteria's nitrogen fixation or assimilation genetic regulatory network, such that the bacteria are capable of fixing atmospheric nitrogen in the presence of exogenous nitrogen. The bacteria are not intergeneric microorganisms. Additionally, the bacteria, in planta, produce 1% or more of the fixed nitrogen in the plant.

The invention discloses a humic acid coated zeolite-based nutrient-loaded slow-release fertilizer as well as a preparation method and application thereof. The slow-release fertilizer comprises a zeolite-based core and a humic acid polymer coating coated outside the zeolite-based core. The slow release fertilizer provided by the invention not only retains the original high-loading nutrient loading function of the nano composite zeolite material, but also endows the nano composite zeolite material with chemically stable ion exchange and adsorption functions, thereby thoroughly getting rid of the original'instant nutrient fertilizer salt core '; the slow-release fertilizer provided by the invention takes artificial humic acid as a coating material, so that the use of chemical organic materials and solvents is completely avoided. According to the invention, the conversion of the inorganic fly ash solid waste and the organic biomass solid waste from raw materials to the ecological slow-release fertilizer is realized. Meanwhile, the efficient conversion of zeolitization and humification in the chemical industrial process realizes the large-scale production of the zeolite-based material doped with the heterogeneous metal in the pore cage frame structure and the carbon-negative humic acid polymer material.

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 relates to the technical field of water-soluble fertilizers, in particular to a water-soluble organic fertilizer and a preparation method and application thereof.The water-soluble organic fertilizer is prepared from, by mass, 40-100 parts of basic organic raw materials, 5-15 parts of microbial fermentation additives, 10-20 parts of nutrient element supplements and 3-7 parts of synergists; the microbial fermentation additive comprises a compound microbial agent and a microbial growth carrier, the nutrient element supplement comprises a nitrogenous fertilizer, a phosphatic fertilizer, a potash fertilizer and medium trace elements, and the synergist comprises fulvic acid and alginic acid. According to the water-soluble organic fertilizer and the preparation method and application thereof, efficient utilization and accurate supply of nutrients are achieved, the growth requirements of crops in plant factories are met, meanwhile, resource utilization of organic waste is promoted, and sustainable development of the plant factories is promoted.

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 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 present invention provides a silica / hydrotalcite composite slow-release fertilizer and a preparation method thereof, comprising the following steps: uniformly mixing amorphous silica, a divalent metal salt, a trivalent metal salt, and water to obtain a mixed solution; subjecting the mixed solution to a hydrothermal reaction, followed by filtering, washing, and drying to obtain a silica / hydrotalcite nanocomposite material; calcining the silica / hydrotalcite nanocomposite material to obtain a silica / metal oxide nanocomposite material; and loading inorganic and organic fertilizers onto the silica / metal oxide nanocomposite material to obtain a silica / hydrotalcite composite slow-release fertilizer. This preparation method is simple, highly feasible, low-cost, and easily scalable for industrial production. The layered and pore-channel structure of the silica / hydrotalcite nanocomposite material effectively provides ample space for the loading of nutrients, thereby improving the slow-release efficiency of nutrients in the fertilizer, increasing nutrient utilization efficiency, reducing fertilization frequency, and minimizing potential environmental impacts.

The invention discloses a preparation method of a controlled-release fertilizer for mechanical transplanting rice seedling raising subsoil and application of the controlled-release fertilizer to replace field fertilization, and belongs to the technical field of rice cultivation. A coating of the controlled-release fertilizer is prepared from the following components in parts by weight: 20 to 60 parts of low-density polyethylene resin, 10 to 20 parts of ethylene-vinyl acetate copolymer, 5 to 30 parts of synthetic resin biodegradation inducer, 3 to 15 parts of starch, 10 to 70 parts of talcum powder and 0.2 to 2 parts of nonionic surfactant. The controlled-release fertilizer comprises urea and a compound fertilizer which are respectively coated by the coating film. According to the controlled-release fertilizer for the machine-transplanted rice seedling raising subsoil, a coating material is optimized, the release inhibition period of the controlled-release fertilizer is 20-30 days, normal growth of rice seedlings is ensured, and the rice growth requirements are accurately met. When the method is used for rice planting, a seedling raising subsoil fertilizer carrying method is adopted, integration of rice transplanting and fertilization is achieved, and on the basis of ensuring high and stable yield of rice, the fertilizer application cost and the risk of nitrogen and phosphorus pollution emission in the rice field are reduced.

The invention discloses a fertilizing method for improving the yield and quality of cigar tobacco leaves and application. A fertilizing method for improving the yield and quality of cigar tobacco leaves comprises the following steps: when the cigar tobacco leaves are transplanted to mature and harvested, the total nitrogen application amount is 6-10 kg / mu according to the pure nitrogen amount, the applied compound fertilizer comprises the following components in parts by mass: 6.0-9.0 parts of N, 7.7-27.3 parts of P2O5, 20.0-50.0 parts of K2O and 7.0-9.6 parts of S, the base fertilizer is applied on the day of transplanting, and the top fertilizer is applied once 1-2 weeks after transplanting and 3-4 weeks after transplanting, the mass ratio of the base fertilizer to the single additional fertilizer is (1-1.5): (1-4.5). According to the fertilizing method, tobacco plants grow tidily and pleasantly in the field, the early-stage growth vigor is robust, the medium-stage fertilizer nutrient supply is sufficient, the later-stage tobacco growth is stable, and the requirements of high-quality cigar groups and individual growth vigor are met.

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 relates to the technical field of compound fertilizers, and discloses a root-promoting stress-resistant corn special fertilizer and a preparation method thereof, the root-promoting stress-resistant corn special fertilizer comprises an organic compound matrix, 8-15 parts of sodium alginate, 3-10 parts of bacillus subtilis, 3-7 parts of chelated zinc, 8-15 parts of potassium fulvate, 5-10 parts of polyaspartic acid, 17-25 parts of potassium nitrate, 12-20 parts of ammonium sulfate, 10-20 parts of bentonite and 25-35 parts of monoammonium phosphate, through the synergistic effect of various components in the fertilizer, efficient promotion of corn growth is realized, nitrogen provided by monoammonium phosphate promotes corn leaf growth and enhances photosynthesis, and phosphorus mainly promotes root development, so that the root is more developed, and the absorption capacity of the root to moisture and nutrients is improved; meanwhile, the resistance of the corn to adverse situations such as drought and cold is enhanced.

The invention relates to the technical field of rice seed germination accelerating systems and methods. Seed selection is conducted, specifically, rice seeds which are full and free of damage are screened, and impurities are removed; the rice seeds are soaked in a plant growth regulator mixed solution to be subjected to oscillation treatment, the mixed solution is composed of gibberellin with the concentration being 20-50 mg / L, pimacol with the concentration being 5-15 mg / L and polyoxyethylene lauryl ether with the concentration being 0.01-0.03%, the liquid temperature is kept at 30 + / -2 DEG C, and the treatment time is 2-4 hours; gradient disinfection: primary disinfection: putting the pretreated seeds into a 0.3-0.5% hydrogen peroxide solution at the temperature of 40-50 DEG C, and stirring for 15-20 minutes; secondary disinfection: transferring to a 0.8-1.2% sodium hypochlorite solution at the temperature of 25-30 DEG C, adding a 0.05-0.1 mol / L phosphate buffer solution to adjust the pH value to 6.8-7.2, and standing for 40-60 minutes; the disinfected seeds are put into magnetized water containing 0.1%-0.3% of chitosan derivatives and 0.05%-0.15% of sodium alginate, the magnetic field intensity ranges from 300 gauss to 500 gauss, and ultrasonic waves of 30 kHz to 50 kHz are adopted for assisting permeation for 1 h to 2 h; the rice seed germination accelerating system and method are high in germination accelerating efficiency.

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.

The highland barley fertilizer is prepared from the following raw materials in parts by weight: 1000 parts of water, 140 to 160 parts of highland barley rice, 0.5 to 1.0 part of zymophyte, 100 parts of amino acid, 100 parts of magnesium sulfate, 10 to 20 parts of borax, 5 to 10 parts of calcium nitrate tetrahydrate and 100 parts of white sugar. The invention relates to the field of compound microbial fertilizers, in particular to a highland barley fertilizer and a preparation method thereof.The liquid fertilizer is prepared with highland barley as the main raw material, the liquid fertilizer is matched with flora capable of releasing soil fertility, the content of amino acid, calcium and magnesium elements in a fermented product is higher than that of a traditional fertilizer, and the content of amino acid, calcium and magnesium elements is increased while the fertility of soil is increased; the hidden fertility of the soil can be released.

The invention relates to the technical field of agricultural fertilizers, in particular to a slow / controlled-release fertilizer for saline-alkali soil and a preparation method of the slow / controlled-release fertilizer. The slow / controlled-release fertilizer sequentially comprises a core layer, an inner coating, a shell layer and an outer coating from inside to outside, the core layer comprises a functional aid, diammonium hydrogen phosphate, urea, isobutylidene diurea, potassium nitrate and biochar; a shell layer contains bagasse, a compound strain and fulvic acid; the coating material is an adhesive containing montmorillonite powder; the functional additive is loaded with an organic acid and polymethacrylamide network through modified diatomite, so that the synergistic effect of sodium ion adsorption, acid-base regulation and nutrient slow release is realized; through the multi-layer structure design and the component synergistic effect, it is guaranteed that the slow and controlled release fertilizer can improve the saline-alkali soil structure in a long-acting mode, accurately regulate nutrient release and improve the stress resistance of crops, and the slow and controlled release fertilizer is suitable for efficient utilization of saline-alkali soil.

The invention discloses a nitrogenous fertilizer for cigars, a fertilizer and application. A nitrogenous fertilizer for cigars comprises a nitrate nitrogenous fertilizer and an ammonium nitrogenous fertilizer, and the molar ratio of the nitrate nitrogenous fertilizer to the ammonium nitrogenous fertilizer is (0.66-1.50): 1. The nitrate nitrogen fertilizer is potassium nitrate and / or calcium nitrate, and the ammonium nitrogen fertilizer is ammonium bicarbonate. The molar ratio of the nitrate nitrogen fertilizer to the ammonium nitrogen fertilizer is 1: 1. The invention also provides a fertilizer for cigars. The fertilizer comprises any nitrogen fertilizer for cigars. The fertilizer comprises the following components in parts by weight: 20-60 parts of decomposed oil cake, 20-40 parts of nitrogen fertilizer, 10-30 parts of phosphate fertilizer and 30-60 parts of potash fertilizer. The thoroughly decomposed oil cake is a thoroughly decomposed sesame cake. The nitrogenous fertilizer can improve the soil environment of the tobacco plant root zone, is beneficial to increasing the content of acid phosphatase in the soil, promotes the root development of the tobacco plant, increases the number of effective leaves, and can balance chemical components in cigar leaves.

The invention provides a modified charcoal-based slow-release rare earth lanthanum soil conditioner and a preparation method thereof, and relates to the technical field of soil conditioners, the saline-alkali soil conditioner is used for reducing soil salinity and alkalinity, fixing heavy metals in soil, improving soil structure and slowly releasing rare earth elements into soil; the preparation method comprises the following steps: 1, preparing a rare earth lanthanum compound; modifying the biochar; a phosphate; dewatering the river sludge; an organic complexing agent; step 2, dissolving a rare earth lanthanum compound and an organic complexing agent in deionized water, and reacting to generate a complex solution; step 3, preparing modified biological carbon; step 4, loading lanthanum; and step 5, mixing the matrix to obtain the saline-alkali soil conditioner. Lanthanum nitrate and sodium citrate are converted into a complex solution, the lanthanum citrate complex has good stability, lanthanum can be effectively fixed in the solution in the form of the complex, the lanthanum is prevented from precipitating or losing in the subsequent treatment process, and the slow release effect of lanthanum is achieved.

The invention belongs to the technical field of soil remediation, and discloses a microalgae biological soil remediation agent and application thereof. A sustainable benign underground micro-ecosystem is constructed, the prepared microalgae biological soil remediation agent takes a porous active carrier with positive charges as a matrix, the porous active carrier is a porous carrier obtained by compounding silicon dioxide on montmorillonite, and the porous carrier is modified to obtain an aminated porous carrier with negative charge NH2-groups between layers. And finally, chitosan cations loaded on the carrier become a porous active carrier with positive charges, and the carrier is loaded with a large amount of chlorella pyrenoidosa, so that the environmental sensitivity is reduced, the carrier can survive and breed in a harsh soil environment, the soil fertility can be remarkably improved, and the yield and quality of crops are improved. Meanwhile, the effect of reducing soil heavy metal pollution is also achieved; the microbial community diversity of the soil can be increased, the soil aggregate structure is improved, and the physical and chemical environment of the soil is improved.

The invention relates to the technical field of fertilizers, and discloses a molybdenum-boron synergistic control type macroelement water-soluble fertilizer, which is prepared from the following raw materials in parts by weight: nitrate nitrogen, ammonium nitrogen, ammonium polyphosphate, potassium oxide, chelated magnesium (MgO), trace elements, a stress-resistant enhancer, a synergistic control agent and a stabilizer, the trace elements are composed of ammonium molybdate, a boric acid-glycerol compound, chelated zinc, chelated manganese (Mn-EDTA) and a chelating agent. According to the molybdenum-boron synergistic control type macroelement water-soluble fertilizer and the preparation process thereof, the ammonium molybdate and the boric acid-glycerol compound are added into the fertilizer, so that the nutrient deficiency symptom can be effectively and synergistically prevented, the fungal disease resistance can be effectively improved by adding the salicylic acid and the nano silicon dioxide, and meanwhile, the effect of preventing and treating the macroelement is achieved. By adding the chlamydomonas rubra enzymolysis extract containing natural abscisic acid, potassium silicate and polyaspartic acid, the high temperature resistance, drought resistance and heavy metal pollution resistance of the fertilizer can be effectively improved, so that the effect of the whole water-soluble fertilizer is improved, and the application range of the water-soluble fertilizer can be widened.

Process for obtaining a fertilizer composition comprising (i) at least one nitrogen-containing fertilizer (F); and (ii) a nitrification inhibitor (N) selected from the group consisting of 2-(3,4-dimethyl-1H-pyrazol-1-yl)succinic acid and / or 2-(4,5-dimethyl-1H-pyrazol-1-yl)succinic acid comprising the steps: a) melting fertilizer (F), and / or providing a melt of fertilizer (F), and b) adding the nitrification inhibitor (N) to the melt of fertilizer (F), wherein the residence time of the nitrification inhibitor (N) in the melt of the nitrogen-containing fertilizer (F) is not more than 5 minutes.

The application provides a method for preventing and controlling plant aphids, and the specific steps are as follows: selecting plant germination seeds that have grown roots and the root length is 2-6 cm, applying a light cycle treatment of 8h light and 16h darkness in the growth process of the plant germination seeds; in the plant germination seeds, the seed sources include legumes and cruciferous vegetables; and in the growth process of the plant germination seeds, a boron-containing nutrient solution containing the following components is used: Ca(NO3)2.4H2O 4mM, KH2PO4 1mM, KCl 1mM, MgSO4.7H2O 2mM, K2SO40.5mM, FeSO4.7H2O 50μM, EDTA.Na2 50μM, MnCl2 10μM, ZnSO4.7H2O 5μM, CuSO4.5H2O 0.5μM, (NH4)6Mo7O 24 4H2O 1μM, H3BO3 35-70μM, CoCl20.5μM; the nutrient elements are applied according to the following steps: (1) the first boron-containing nutrient solution is used for 1-5d, and the concentration of all components in the first boron-containing nutrient solution is 20-30% of that of the boron-containing nutrient solution; (2) the second boron-containing nutrient solution is used for 6-15d, and the concentration of all components in the second boron-containing nutrient solution is 40-60% of that of the boron-containing nutrient solution. The method can effectively prevent and control plant aphids.

The present application relates to a kind of high nutrient high activity chemical fertilizer biological compound fertilizer and its preparation and application, belong to agricultural fertilizer technical field.The high nutrient high activity chemical fertilizer biological compound fertilizer of the present application includes inorganic fertilizer and microbial inoculant, the nitrogen phosphorus potassium nutrient content of the chemical fertilizer biological compound fertilizer is greater than 40%, and microbial viable count is above 200 million cfu / g, also includes microbial protective agent, the mass ratio of the microbial protective agent and microbial inoculant is ≥1.The high nutrient high activity chemical fertilizer biological compound fertilizer product of the present application realizes the deep compound of chemical fertilizer and active microorganism, has multiple efficacy of chemical fertilizer and microbial fertilizer, overcomes the neck blocking technical problem that chemical fertilizer and microbial fertilizer are incompatible in production, storage and transportation, use process, significantly improves chemical fertilizer utilization efficiency, reduces fertilizer use cost, solves the problem that microbial fertilizer cannot be generally used in field crops, integrates fertilizer yield and quality improvement, fertile soil and pollution prevention and other functions.

The present invention relates to a fertilizer particle comprising one, two or three of from 1.0 to 30 wt.% of nitrogen (N), from 1,0 to 52 wt.% of phosphorus (P) (expressed as P2O5), from 1,0 to 60,0 wt.% of potassium (K) (expressed as K2O), depending on whether the fertilizer particle is a K, a NP or a PK, or a NPK fertilizer, and from 0.0001 to 5.0 weight% of at least one polysaccharide, more in particular chitosan, as a biostimulant, based on the total weight of the fertilizer particle. The present invention furthermore relates to a method to produce such fertilizer particles.

The present invention discloses a liquid film reaction device and method based on dielectric barrier microplasma discharge. The device includes a power supply, a dielectric barrier microdischarge device, and a liquid input system. The dielectric barrier microdischarge device includes an insulating medium, a high-voltage electrode, and a ground electrode, with the power supply connected to the high-voltage electrode and the ground electrode, respectively. The liquid input system includes a liquid container and a water pipe, with the liquid container connected to the water inlet of the dielectric barrier microdischarge device via the water pipe. The device can perform liquid film dielectric barrier microplasma discharge at room temperature and pressure using common gases, air, and water as raw materials, achieving nitrogen / carbon fixation and organic wastewater degradation under mild conditions. The device has a simple structure, is compact and portable, uses cheap gas, has low technical costs, and has the characteristics of fast reaction speed and high energy efficiency. It can degrade organic wastewater and utilize the products of the nitrogen / carbon fixation process for drip irrigation of crops, providing carbon, nitrogen, and other elements to promote crop growth.

The invention relates to the technical field of tropical agricultural planting, in particular to a method for planting pineapple-high-canopy crops on a steep-slope terrain in a low-latitude region. The planting method comprises the following steps: (1) transforming a terrain and interplanting, namely transforming a contour line terrace along the gradient direction, constructing a stepped planting belt, planting high-canopy crops in terrace ridges, and planting pineapples in the terrace surface; (2) complete-cycle photo-thermal management: the canopies of the high-canopy crops intercept direct light, and the pineapples utilize transmission light or diffused light; (3) water and fertilizer collaborative management: dividing a contour line terrace into multiple stages of irrigation areas according to the elevation difference, configuring an independent drip irrigation pipe network for each stage of irrigation area, monitoring the soil conductivity and the leaf surface transpiration rate in real time, and dynamically adjusting the fertilization amount; slow-release compound fertilizer is applied to high-canopy crops, and the application frequency is 4 times per year; the macroelement water-soluble fertilizer is applied to the pineapples by adopting pulse type drip irrigation, so that the fertilizing period of the pineapples and the fertilizing period of the high-canopy crops are staggered.

The invention provides a nutrient solution and application thereof in prevention and treatment of crop sheath blight, and belongs to the technical field of rice planting. The nutrient solution provided by the invention contains cysteine with a certain concentration, after the nutrient solution is applied to rice in the trefoil stage and cultivated to the whole growth period, the resistance of the rice to sheath blight can be improved, and meanwhile, the content of chlorophyll, soluble sugar, soluble protein, SOD, POD, MDA and CAT in rice plants is remarkably increased. The nutrient solution provided by the invention can effectively solve the problem of poor sheath blight disease resistance of rice under conventional planting conditions, and has a wide application prospect.