40 results about "Phloem" patented technology

The invention relates to a phenyl thiazole formic acid compound containing an aromatic amide structure and a preparation method and application thereof.In the phenyl thiazole formic acid compound containing the aromatic amide structure, a carboxylic acid group is beneficial to achieving phloem conductivity, and an amide active substructure introduced into an amino site effectively improves the bactericidal activity of the compound; therefore, the compound disclosed by the invention not only shows excellent agricultural fungicidal activity, but also has the capability of conducting in the phloem of the plant. The raw materials are easy to obtain and process, various pesticide formulations can be prepared, and the requirements of different conditions and different use scenes can be met. The specific structure of the phenyl thiazole formic acid compound is shown as a formula I in the specification.

The invention discloses a healing promoting agent for melon vegetable grafted seedlings. The healing promoting agent contains abscisic acid and ribulose phosphate. The effect of promoting communication of phloem and xylem of grafted seedlings can be achieved by spraying the healing promoting agent before grafting, the healing time of the melon vegetable grafted seedlings is shortened, the operation of film uncovering and film covering in the healing period is reduced, the healing period management is simplified, and the healing cost is reduced.

The application discloses a solid-phase extraction agent and a preparation method and application thereof. Raw materials of the solid-phase extraction agent include cigar stems and shavings, and the mass ratio of the cigar stems to the shavings is 1:1-2. The above raw materials are all natural plants, and in addition to being rich in vascular systems and cellulose, the structure formed by xylem and phloem arranged in bundles and a variety of capillary pore structures make the pores rich, and the structure is provided with rich polar hydroxyl and hydrophobic aromatic functional groups. After being prepared as the solid-phase extraction agent, the structure can form pi-pi bonds and hydrogen bonds with benzo[a]pyrene, has strong adsorption capacity for the benzo[a]pyrene and high adsorption stability, and due to the rich pores, has good permeability. The speed of the benzo[a]pyrene in the solution after adsorption through the extraction column is faster, the adsorption enrichment and purification efficiency of the benzo[a]pyrene in the solution after adsorption is high, and the cost is low and the structure is green and environment-friendly.

The application discloses a propiconazole-azoxystrobin- clothianidin seed treatment suspending agent and a preparation method and application thereof, and belongs to the technical field of pesticide preparations; the agent takes propiconazole, azoxystrobin and clothianidin as active ingredients, takes beta-nicotinamide mononucleotide (NMN) as a functional antimicrobial component, and is supplemented with styrene-maleic anhydride copolymer sodium salt, fatty alcohol polyoxyethylene ether, xanthan gum, magnesium aluminum silicate, glycerol, polydimethylsiloxane defoaming agent, sodium benzoate, polyvinyl alcohol and deionized water to prepare the agent. The application is suitable for seed coating treatment for preventing and treating rice false smut, thrips and wheat sharp eyespot and aphids; NMN promotes the accumulation of phenolic compounds in the phloem of plants, and cooperates with clothianidin on the same insecticidal target, thereby significantly improving the prevention and treatment effect on aphids and thrips; the degradation product of NMN promotes the proliferation of beneficial microorganisms in the rhizosphere, improves soil enzyme activity, and realizes soil micro-ecological restoration.

The invention provides a method for high-pressure propagation and rapid seedling culture of acanthopanax giraldii harms, and belongs to the technical field of rapid propagation of acanthopanax giraldii harms. The method comprises the following steps: 1-3 days before high-pressure propagation in April to August, shading seed trees of acanthopanax giraldii harms; the method comprises the following steps: selecting branches which grow for more than or equal to 1 year on an acanthopanax giraldii harms seed tree, girdling, and scraping away phloem of the girdled part; carbendazim, a rooting solution 1 and a rooting substrate are mixed and filled into a breeding box, the breeding box is pressed at the branch girdling position, a girdling notch is kept in the dead center of the breeding box, and the breeding box is fixed; the relative humidity of the rooting substrate in the breeding box is kept to be 70%-80%, and a rooting promoting nutrient solution is supplemented regularly. According to the method, the problems of microbial contamination and browning in traditional tissue culture are solved, only 4-6 months are needed, the seedling culture time of the acanthopanax giraldii harms is greatly shortened, and the reproduction rate and the branch utilization rate are remarkably increased; the rooting rate and the survival rate both reach 90% or above, and the material cost and the time cost are saved.

The invention discloses a tree peripheral bark callus inducer as well as a preparation method and a use method thereof, and belongs to the technical field of plant tissue hyperplasia. The inducer is prepared by mixing the following components in parts by mass: 900 to 1100 parts of water, 90 to 130 parts of a humectant, 0.01 to 0.5 part of a proliferation agent and 0 to 15 parts of a protective agent. When the inducer is prepared, firstly, water is heated to 50-60 DEG C, under the condition of heat preservation, the humectant weighed according to the proportion is added and fully stirred to be dissolved, then the protective agent weighed according to the proportion is added and fully stirred to form a homogeneous system, then the temperature is reduced to the room temperature, the inducer weighed according to the proportion is added, and the homogeneous system is formed after the inducer is fully stirred again. When in use, the inducer is prepared according to the formula proportion and the method; the composition is sprayed on a fresh wound surface of a peeled bark, the dosage is 0.06-0.10 ml / cm < 2 >, and then the wound surface is wrapped by a degradable film. The inducer can effectively shorten the callus time of peridermis, promote the formation of hyperplastic tissues, increase the growth amount of cork and improve the quality uniformity of the cork.

The application discloses a method for detoxification of jujube tree stem tips, which comprises the steps of material pre-culture, secondary cutting of stem tips, loading, vitrification of ultra-low temperature treatment, thawing and recovery culture. The application effectively improves the survival rate of stem tip explants by optimizing the pre-culture in the medium of the formula and secondary cutting of stem tips, and to some extent, solves the contradiction among the size of stem tips, survival rate and detoxification rate. The phloem-associated virus is detoxified by the treatment of ultra-low temperature freezing therapy, and the survival rate of the explants reaches 50%, and the detoxification rate is 100%. Therefore, the jujube stem tip ultra-low temperature freezing detoxification technology can effectively remove the phloem-associated virus of winter jujube.

The application discloses a method for improving survival rate of palm-leaf wood budding, and belongs to the palm-leaf wood grafting technical field.The grafting method is as follows: (1) selection of stock: selecting palm-leaf wood with a result rate and oil content lower than normal for more than three years as the stock; (2) selection of scion: selecting one-year-old branch of palm-leaf wood with excellent traits and stable yield for more than two years as the scion; (3) grafting: cutting out bud pieces on the scion and waiting for use; cutting out incisions with the same size as the bud pieces on the stock, reaching the phloem, and embedding the bud pieces into the incisions on the stock after taking out, and then binding tightly, so that the problem of low survival rate of palm-leaf wood grafting propagation is solved, and the economic benefit of economic forest is improved.

The invention belongs to the field of molecular biology, and particularly relates to application of an MdHT13.2 gene in regulation and control of plant growth. According to RNA-seq (Ribonucleic Acid-Seq) data analysis, MdHT13.2 with high expression quantity in apple leaves is screened out. Mutant yeast sugar absorption complementation experiments show that MdHT13.2 not only has transport activity on hexose such as glucose, fructose and the like, but also has stronger transport capacity on cane sugar. The results of in-situ hybridization of apple leaves and GUS staining experiments of arabidopsis show that MdHT13.2 has a high expression level in the phloem of the vein. The MdHT13.2 as a member in a hexose transporter gene family can regulate and control sugar accumulation in plants and promote growth of the plants.

The application discloses a method for improving the growth and fruiting rate of 2-3-year-old Carya illinoensis container grafting seedlings after afforestation, which comprises the following steps: selecting 2-3-year-old Carya illinoensis container grafting seedlings and young seedling container seedlings, transplanting the container seedlings and the young seedling container seedlings into planting ponds in an afforestation area, setting up a wound on the stem bark of the container seedlings and the young seedling container seedlings respectively after scratching the stem bark, binding the wounds of the container seedlings and the young seedling container seedlings by using plastic cloth, filling soil, and normally maintaining; after the wounds are fully healed, the plastic cloth is removed, the part above the wound joint of the young seedling container seedlings is cut off, and the young seedling container seedlings are normally maintained until the roots of the young seedling container seedlings and the Carya illinoensis container seedlings are alive. The method can not only protect the root system of the container seedlings by the root system protection matrix, but also can release the root system winding, enhance the root system activity, and promote the rapid growth and development of the root system after transplanting.

The invention discloses a method for improving the salt tolerance of a woody plant through interspecific grafting, in particular to a method for improving the salt tolerance of a scion through grafting by taking a salt-tolerant variety as a stock, and relates to the field of grafting planting. The method comprises the following steps: (1) cutting an annual branch of a salt-tolerant woody plant as a stock, and cutting a phloem at the upper end and the middle part of a cambium from top to bottom; (2) cutting an annual branch of the woody plant and reserving 2-3 buds as scions; (3) aligning and abutting cambiums on the two sides of the long cutting surface of the scion and cambiums on the two sides of the cut of the stock, and binding with a plastic film strip; after the grafting succeeds, one vigorous leaf bud is reserved in the scion. According to the method, the populus nigra scion is grafted to the salt-tolerant American black poplar stock, so that the salt tolerance of the populus nigra scion is improved, the obtained grafted seedling has better growth advantage and salt tolerance, and the method has important application value in increasing the forest yield and cultivating new salt-tolerant varieties.

The invention discloses a traditional Chinese medicine preparation and method for preventing and treating navel orange liberobacter asiaticum. The prevention and treatment method comprises the following steps: a trunk infusion step: infusing a diluent of the traditional Chinese medicine preparation into xylem and / or phloem of a plant trunk; and a foliage spraying step: spraying a foliage fertilizer containing pyroligneous liquor to the foliage of the plant. The traditional Chinese medicine preparation comprises a Chinese herbal medicine extracting solution and aminated xylan. According to the method, a synergistic system of bacteriostasis, nutrition and immunological enhancement is formed through a comprehensive prevention and treatment method of trunk infusion and foliage spraying of the pyroligneous liquid foliage fertilizer. The traditional Chinese medicine preparation infused into the trunk inhibits pathogenic bacteria from the inside in a long-acting mode, the pyroligneous leaf fertilizer provides nutrition from the outside, regulates growth and induces system resistance, internal and external synergism is achieved, diseases are directly inhibited, the nutritional status of diseased trees is remarkably improved, the autoimmunity of the trees is enhanced, and both symptoms and root causes of the huanglongbing are treated.

The application discloses a cotton topping regulator with the functions of topping control and fruit promotion, and belongs to the technical field of crop plant growth regulators.The application adopts special compound active components and special inactive additive systems, does not add any exogenous hormones, insecticides, fungicides and other auxiliary materials, and constructs a differential target regulation mechanism.The regulator can act on the cotton apical meristem, flower bud differentiation tissue and phloem nutrient transport channel, and simultaneously realizes four functions of apical vigorous shoot inhibition, invalid bud removal, bud and boll shedding inhibition and photosynthetic product directional transport, thereby replacing artificial topping operation.The application can reduce the cotton bud and boll shedding rate by 18.2%-23.7%, increase the per mu seed cotton yield by 12.6%-19.3%, and simultaneously optimize the cotton fiber quality;the preparation has strong storage stability, is suitable for unmanned aerial vehicles, large-scale traction spraying machines and other full-process mechanized plant protection equipment, has a green and waste-free preparation process, meets the development needs of cotton simplified and green cultivation, and has high field popularization value.

The present disclosure relates to a single stranded RNA vector suitable for introducing a therapeutic agent, such as a peptide, a protein or a small RNA, into a host plant. The vector does not encode for any movement protein or coat protein, but is capable of capable of systemic and phloem-limited movement and replication within the host plant.

The invention discloses application of a PdeAPL protein and a coding gene thereof in regulating and controlling properties of a poplar material. According to the invention, a transgenic poplar overexpressed with PdeAPL and a transgenic poplar with reduced PdeAPL gene expression quantity are constructed. Experiments prove that compared with a control group, the plant height, the number of stem nodes and the length of the stem nodes of the transgenic poplar subjected to overexpression of the PdeAPL are all remarkably increased, and leaves become smaller; and the plant height and the number of stem nodes of the transgenic poplar with reduced PdeAPL gene expression quantity are reduced, the length of the stem nodes is increased, and the leaves are enlarged. In addition, the xylem width of the transgenic poplar with reduced PdeAPL gene expression quantity is reduced, and the areas of xylem conduit cells, xylem fiber cells and phloem cells are increased. The method disclosed by the invention is of great significance to reveal the regulation and control molecular mechanism of the development of the stem vascular of the forest, the tree form of the forest, the growth speed and the improvement of the wood quality, and directionally cultivate the forest with the tree form or the material meeting the actual production requirements.

The invention discloses a promoter with a nucleotide sequence as shown in SEQ ID NO: 1, which can improve the expression level of a target gene in a plant, is used for accurately modifying transporter to regulate and control nutrition distribution and heavy metal resistance at phloem, and can be used for cultivating transgenic plant varieties.

This invention relates to the field of identification technology for precious woods and medicinal materials, particularly a method for non-destructive testing of agarwood based on micro-CT to determine its authenticity and quality. The technical solution includes: acquiring complete three-dimensional data of the agarwood interior through micro-CT non-destructive scanning; extracting characteristic parameters such as the three-dimensional topological structure of the interstitial phloem, the distribution and fullness of agarwood resin, and abnormal structures; identifying authenticity by comparing these parameters with a pre-built database, particularly effective in identifying internal forgery traces such as high-pressure oil injection and mechanical compression; simultaneously, using a multi-parameter fusion model to quantitatively evaluate the spatiotemporal distribution characteristics of agarwood resin and the proportion of resin-containing interstitial phloem to determine its quality grade; achieving comprehensive, objective, and non-destructive testing of agarwood from the inside out, from authenticity to quality, especially suitable for identifying high-end crafts, collectibles, and precious agarwood raw materials, solving the industry pain point that traditional destructive testing methods cannot be applied to intact products.

The present disclosure relates to a viral vector suitable for introducing a therapeutic agent, such as a peptide, protein or small RNA, into a host or otherwise treating a host. The vector may include an exogenous RNA segment with a hairpin-like structure or having two or more base-paired regions separated by one or more non-base-paired regions. The exogenous RNA segment may have a secondary structure, minimum free energy, average positional entropy or other attributes within specified ranges, or with values similar to one or more hairpin-like structures of a reference wild type virus. Optionally, the RNA vector may be derived from the reference wild type virus or a relative of the reference wild type virus. In some examples, the vector is capable of capable of systemic and phloem-limited movement and replication within a host plant. In some examples, the reference wild type virus is an umbravirus-like associated RNA.

The invention discloses a method for collecting sieve tube overflow substances in rubber tree barks, and belongs to the technical field of sieve tube overflow substance acquisition. Rubber tree coppice shoots growing within two years are selected; a section of stem is selected from the third extension unit or the fourth extension unit, the outermost epidermis and part of the cortex layer of the bark are scraped firstly, and wiping is carried out after primary latex exudates completely; after that, scraping off the remaining part of cortex, primary phloem fiber layer and primary phloem until the secondary phloem containing the sieve tube tissue is exposed, puncturing the secondary phloem, and sucking the discharged sieve tube overflow in the secondary phloem; a V-shaped opening is upwards cut in the secondary phloem part along the punctured part, and the sieve tube overflowing matter flowing out subsequently is sucked. The method is implemented on a specific rubber tree material in a specific period, a secondary milk duct is not generated in the bark, and pure sieve tube overflow of the rubber tree can be obtained by removing the primary milk duct and the latex firstly, then obtaining the sieve tube overflow and eliminating interference of the latex in the milk duct.

The invention discloses a cotton boll water flux balance equation and a phloem hydraulic conductivity quantification method, and relates to the technical field of plant physiology and agricultural engineering. The method comprises the following steps: measuring the water vapor diffusion conductance of the fruit surface and the hydraulic conductance of the fruit xylem, monitoring the fresh weight and dry weight change of the fruit and the daily change of the water potential of the fruit and the stem, establishing a water flux balance equation of entering and exiting the fruit, and calculating the hydraulic conductance of the phloem. Parameters such as related conductance and osmotic potential are calculated through a formula, the phloem water flux is calculated according to a fruit phloem sugar unloading path selection formula, and then the phloem hydraulic conductance is obtained. The method solves the problem that a systematic quantification method for phloem hydraulic conductivity is lacked in the prior art, can accurately track the moisture flux of the fruits, provides a basis for crop stress-resistant variety breeding and accurate irrigation, and is suitable for fruit crops such as cotton and the like.

The invention discloses a non-destructive edgeworthia chrysantha factor cloning propagation method for agilawood trees, and belongs to the technical field of forestry biology. Aiming at the problems that in the prior art, plants need to be damaged during agilawood formation, the propagation efficiency is low, and agilawood formation characters are unstable, the method comprises the following steps: obtaining agilawood formation key factor genes of the phloem of the lateral root of the agilawood in a non-destructive manner; constructing an edgeworthia chrysantha factor recombinant expression vector containing a phloem specific promoter; non-destructively preparing agilawood axillary buds as an acceptor material; cloning seedlings are formed through agrobacterium tumefaciens-mediated oriented transformation and induction; and carrying out non-destructive edgeworthia chrysantha verification and domestication on the cloned According to the method, non-destructive operation of stock plants and clone seedlings is achieved, the breeding period is short, the agilawood formation character is stable, and technical support is provided for sustainable development of the agilawood industry.

The invention relates to the technical field of plant physiology and ecology monitoring, in particular to a plant stalk carbon sink in-situ measuring device which comprises a split type shell used for being buckled on a plant stalk. A self-adaptive dynamic sealing system is arranged at a port, used for buckling plant stalks, of the split type shell; the self-adaptive dynamic sealing system comprises an inflatable elastic sealing piece and a pressure adjusting unit connected with the inflatable elastic sealing piece through a gas circuit. The invention also relates to a method for measuring the carbon sink of the plant stalk. The method comprises the following steps: closing the split shell on the periphery of the plant stalk to be measured through the two-stage locking mechanism; a dynamic measurement mode is entered; gas exchange data is recorded, and the split type shell is opened; the device can automatically fill gaps generated due to non-uniform stalk thickness and irregular surface texture, ensures airtightness, and ensures that the radial pressure intensity of the plant stalk is always limited in a safe range in which phloem tissues of the plant stalk are not damaged, so that the physiological authenticity of measured data is ensured.

The invention discloses a method for selectively extracting plant xylem embolism conduit juice, and belongs to the technical field of plant physiology research. In order to solve the problem that pure embolism catheter juice cannot be distinguished and obtained in the prior art, a plant stem section in a specific water stress state is obtained, the morphological lower end of the plant stem section is connected with a hydrophobic extracting solution, the upper end of the plant stem section is connected with a collecting system applying 0.01-0.1 MPa negative pressure, the extracting solution is driven by the negative pressure to selectively enter and flow through an embolism catheter, and the juice in the embolism catheter can be obtained. Meanwhile, due to the fact that the applied pressure is far smaller than the pinhole membrane fixing force borne by a water column in the functional catheter, the juice in the functional catheter can be reserved. Specific extraction of embolism catheter juice is realized for the first time, and a reliable method is provided for directly analyzing physicochemical properties of the juice and researching an osmotic regulation mechanism of xylem embolism repair.

The invention provides a drought-enduring plant selection system based on osmotic regulation substance dynamic monitoring, and relates to the technical field of plant phenotype and molecular characterization detection, and the drought-enduring plant selection system comprises S1, a self-cleaning microfluidic sampling module which comprises a microneedle array and a programmable microvalve, the self-cleaning microfluidic sampling module can periodically and quantitatively extract trace samples from intercellular fluid or phloem fluid on the surface of a plant living tissue to be detected in a non-destructive mode, channel blockage is prevented through self-cleaning circulation, and the molecular imprinting sensitization microcavity spectrum sensing module is in fluid communication with the self-cleaning microfluidic sampling module. According to the drought-enduring plant selection system based on the dynamic monitoring of the osmotic regulating substance, a self-cleaning microfluidic sampling and molecular imprinting sensitization microcavity spectrum sensing module is integrated on the surface of a living tissue; the system can realize non-destructive sub-micron level continuous on-line quantitative monitoring on osmotic regulation substances such as proline, soluble sugar and betaine in a plant living body state, and outputs a concentration change curve in real time.

The invention belongs to the technical field of insect feeding, and particularly relates to semi-artificial feed and an artificial feeding method for multihole transverse gallosoma elegans. The semi-artificial feed for the rhynchophorus multifortunei, provided by the invention, is prepared from fraxinus chinensis phloem powder, fraxinus chinensis xylem sapwood powder, soybean meal, cane sugar, agar, cholesterol, Webster salt, potassium sorbate, methyl p-hydroxybenzoate, compound vitamin B and distilled water according to a specific weight part ratio. The artificial feeding method comprises the whole processes of adult collection, egg laying induction, egg incubation, single larva feeding, pupa management and adult polyculture. The feed disclosed by the invention is comprehensive and balanced in nutrition, can fully meet the requirement of the whole life history of the multihole transverse gallosopterus, remarkably improves the survival rate of larvae and the eclosion rate of adults, realizes large-scale standardized feeding, and provides a stable insect source for research on pest control.

The utility model discloses a tree growth monitoring tool which comprises a supporting column, the bottom of the supporting column is fixedly connected with a base, one side of the interior of the supporting column is fixedly connected with an electric push rod, the output end of the electric push rod is fixedly connected with a sliding column, and the top of the sliding column is fixedly connected with a bearing plate. A first connecting plate is arranged on one side of the supporting column, a second connecting plate is arranged on one side of the first connecting plate, a first arc-shaped plate is slidably connected into the first connecting plate, the diameter of a trunk is calculated by scanning the contour of the trunk and utilizing data of multiple points, and regular repeated measurement can be conducted, so that increasing data of the diameter of the trunk can be accurately obtained; the stress sensor monitors the stress change in the trunk, understands the structural stability of the tree and analyzes the stress change rule of xylem and phloem in the growth process of the tree, so that whether the tree grows healthily or not and whether potential breaking risks exist or not can be judged, and the functionality and practicability of the monitoring tool are improved.

The invention provides a method, a device, equipment, a medium and a product for measuring a fruit moisture transportation index, and the method comprises the following steps: based on a gravity water head method, measuring xylem hydraulic resistance of a fruit stem and a calyx, xylem hydraulic resistance of the fruit stem and xylem hydraulic resistance of the calyx; measuring xylem water flow, phloem water flow and transpiration flow of the fruits based on a girdling method; acquiring an epidermis image of the fleshy fruit, and determining the vascular bundle density of the fruit epidermis based on the epidermis image; paraffin sections of the meat type fruits are obtained, and the xylem hydraulic conductivity is determined based on the paraffin sections; based on a pressure method, plant stem water potential and fruit water potential are measured. By means of the mode, a reliable measuring method can be provided for the relation between the fruit vascular bundle system and the moisture transportation function, research on the structure and the function of the fruit vascular bundle system is facilitated, and a necessary tool is provided for developing the water-saving conditioning irrigation theory from the angle of fruit moisture transportation.

Provided is the use of a PdeAPL protein and a gene encoding same during the regulation of wood properties of poplar. A transgenic poplar overexpressing PdeAPL and a transgenic poplar having a reduced PdeAPL gene expression level are constructed. It is verified through experiments that compared with a control, the transgenic poplar overexpressing PdeAPL exhibits significantly increased plant height, internode number and internode length, but decreased leaf size; whereas the transgenic poplar having a reduced PdeAPL gene expression level exhibits decreased plant height and internode number, and increased internode length and leaf size. In addition, the transgenic poplar having a reduced PdeAPL gene expression level exhibits a decrease in xylem width, and an increase in the areas of xylem vessel cells, xylem fiber cells and phloem cells.

The invention relates to an organic state potassium phosphite liquid fertilizer and a preparation method thereof. The effective component of the liquid fertilizer is at least one potassium phosphite compound with the structure shown in the formula (I) to the formula (V), and phosphorous acid and specific polyhydric alcohol are subjected to esterification reaction and then neutralized with potassium carbonate or potassium hydroxide to prepare the liquid fertilizer. The liquid fertilizer has nutrition and sterilization functions, and can effectively prevent fungal and bacterial diseases; an esterification reaction product is stable in property and not prone to being oxidized into orthophosphate with oxygen to lose the sterilization effect, meanwhile, precipitation with medium trace elements is reduced, and compatibility with pesticides is good; organic ester leaves have good affinity, the structure is beneficial to direct absorption of plants, bidirectional transportation can be carried out in xylem and phloem, and the utilization efficiency is high; the foliage affinity is strong, leaves are not easy to burn after high-concentration spraying, and the foliage fertilizer is suitable for various modes such as foliage spraying and drip irrigation. The method is mild in reaction, is operated at normal temperature, does not need heating, is simple and convenient in process, and is suitable for large-scale production and popularization.

The invention discloses a sugar alcohol chelated liquid silicon-potassium fertilizer with disease-resistant and drought-resistant functions and a preparation method thereof, and relates to the field of liquid silicon-potassium fertilizers, the sugar alcohol chelated liquid silicon-potassium fertilizer comprises the following components: 5-15% of a silicon source compound (based on SiO2); 8%-20% of a potassium source compound (based on K2O); 10%-30% of a sugar alcohol chelating agent (mannitol, sorbitol or a mixture thereof); 1%-5% of auxiliaries (including a pH regulator, a stabilizer and a penetration enhancer); the total percentage is 100%; according to the sugar alcohol chelated liquid silicon-potassium fertilizer with disease-resistant and drought-resistant functions and the preparation method thereof, a silicon source and a potassium source are stably combined into a silicon-potassium-sugar alcohol compound through a unique sugar alcohol chelation technology. As a natural transport carrier of plant phloem, the sugar alcohol can quickly transport nutrients to crop fertilizer requiring parts, such as leaves and the like. Compared with a traditional silicon-potassium fertilizer which is physically mixed in a control example, the compound has the advantage that the nutrient absorption efficiency is remarkably improved.