49 results about "Hickory nut" patented technology

The invention discloses a group of molecular markers related to the oil yield of carya illinoensis and application of the molecular markers, and relates to the technical field of biology. The nucleotide sequence of the SNP molecular marker is as shown in SEQ ID NO. 1-2. The molecular marker disclosed by the invention can be used for marker assisted selection (MAS) and genome selection (GS) of the carya illinoensis, so that the genetic improvement progress of the variety of the carya illinoensis can be accelerated.

The application discloses a marine source penicillium and a fermentation method and application thereof. The marine source penicillium is named Penicillium sp. DSF059, and the preservation number is CCTCC NO: M 20232310. Penicilliu The application optimizes the culture condition of the strain, selects a culture medium and culture condition with high yield of antibacterial active compounds to carry out fermentation, so that more target products can be obtained, the operation is simple, the cost is low, and meanwhile, the marine source penicillium Penicilliu Penicillium sp. DSF059 can provide an excellent strain for new drug development of resisting plant pathogenic fungi such as coffee leaf blight, coffee brown spot disease, grape gray mold disease, Chinese cinnamon brown spot disease, citrus black rot disease, pepper late blight, hickory leaf blight, coffee black spot disease and four pathogenic fungi separated from coffee leaf diseases and Staphylococcus aureus, and has a good application prospect for preventing and treating the plant pathogenic fungi and Staphylococcus aureus.

The invention relates to the technical field of forest cultivation, and discloses a carya illinoensis fruit forest variety configuration method which comprises the following steps: configuring a main cultivation variety and a pollination variety in a fruit forest; preparing a pollination synergistic composition; the composition is sprayed at the initial stage of stigma exposure of female flowers of a main cultivated variety. The composition comprises a phenolic acid grafted carboxymethyl chitosan derivative, low methoxyl pectin, a calcium ion cross-linking agent, sugar alcohol chelated boron and spermidine. According to the method, an interfacial film with antioxidant activity is formed on the surface of the stigma by using the grafting modified matrix, so that the stigma browning is effectively inhibited, and the pollination period is prolonged; by constructing a calcium cross-linked low-methoxyl pectin interpenetrating network, an interfacial film is endowed with an intelligent degradation characteristic of enzyme-sensitive response to pollen, and protection at ordinary times and immediate dissolution after touching flowers are realized. According to the method, pollen is captured through static electricity, nutritional factors are released in a targeted mode, the pollination and fertilization efficiency is remarkably improved, the sterility risk in the flowering phase is relieved, and the yield and quality of carya illinoensis are improved.

Methods of farming, domesticating, or cultivating truffle fungi, including isolation and cultivation methods for producing pure truffle fungi, or mini-truffles, typically a Tuber spp. or an Iamai spp. Examples of truffle include Tuber melanosporum, Tuber magnatum, Tuber aestivum, Tuber uncinatum, Tuber borchii, Imaia spp., Tuber macrosporum, Tuber gibbosum, Tuber oregonense, and Tuber lyonii. The isolated pure truffle may then be cultivated on a nutrient substrate, which may be, for example, a fruit, nut, grain, or a portion thereof, resulting in a truffle-flavored food product. Non-limiting examples of such substrates include rye, barley, lentil, wheat, rice, soybeans, pecan, hazelnut, pine nut, English walnut, coffee beans, mustard, cacao, sesame, sunflower, grapes, blackberries, blueberries, cherries, kiwi, mango, raspberries, and huckleberries.

The invention relates to the technical field of walnut oil refining, in particular to a refining method of low-temperature cold-pressed hickory nut oil, which comprises the following steps: adding magnetized water and a magnetic enzyme carrier into pretreated hickory nut crude oil to carry out enzymolysis reaction, and carrying out magnetic separation and separation after the enzymolysis reaction is finished to obtain degummed hickory nut oil; adding a modified decolorizing agent into the degummed hickory nut oil, and filtering after decolorizing to obtain decolorized hickory nut oil; wherein the modified decolorizing agent consists of activated clay and sugar carbon; and carrying out vacuum dehydration treatment on the decolored pecan oil to obtain the refined pecan oil. According to the invention, the magnetic enzyme carrier, the magnetized water and the modified decolorizing agent are matched for use, so that the pecan oil is degummed and decolorized better, and the quality of the finished pecan oil is ensured.

The invention relates to the field of disease and pest control, in particular to a disease and pest control method for pecans. The method comprises the following steps: S1, adding a prepared insecticide into an insecticide box; s2, a plurality of agent boxes are fixed to the peripheral side of a trunk of the walnut tree through hook-and-loop fasteners and binding bands; s3, smearing insect sticking glue on the peripheral surface of the hook-and-loop fastener; s4, the insecticide seeps from the bottom of the insecticide box and drips to the periphery of the bottom of the trunk, a circle of insecticide area is formed at the bottom of the trunk, and insecticide liquid drops are thrown away when wind blows; and S5, observing the remaining amount of the insecticide in the insecticide box through a transparent window on the insecticide box, and supplementing the insecticide in time when the insecticide is insufficient. The pesticide box automatically drips pesticide to achieve continuous pest and disease control, a worker only needs to add the pesticide into the pesticide box and does not need to spray the pesticide by himself / herself, and physical strength is saved.

The invention discloses automatic efficient cleaning equipment for hickory nuts, and belongs to the technical field of walnut cleaning, the automatic efficient cleaning equipment for hickory nuts comprises a cleaning box, a water tank is fixedly mounted on the surface of the cleaning box, a flushing mechanism is fixedly mounted in the cleaning box, and a sewage draining mechanism is fixedly mounted in the cleaning box; a brush mechanism, a discharging mechanism and a sealing mechanism are fixedly installed in the cleaning box, a plurality of damping mechanisms are fixedly installed on the surface of the cleaning box, a water pump is fixedly installed on the surface of the cleaning box, and the material washing table is arranged to be in a step shape. The hickory nuts fall slowly, the washing mechanism can wash the hickory nuts, green husks on the surfaces of the hickory nuts are left in the triangular groove after being washed and can be discharged from the interior of the cleaning box through the sewage discharging mechanism, and a water source for washing falls to the brush mechanism from the water discharging hole for secondary utilization.

The invention discloses a method for planting carya illinoensis under forest and morchella esculenta, and belongs to the technical field of mushroom planting. The method specifically comprises the steps of forest land selection, deadwood and weed removal, ploughing and soil preparation treatment, greenhouse building, soil improvement, soil disinfection, ditching and ridging, morchella esculenta sowing, watering, temperature and humidity management, nutrition management, management after fruiting and harvesting. According to the method for planting the carya illinoensis under the forest and the morchella esculenta, efficient utilization of the land under the forest is achieved, cost input is reduced, planting benefits are increased, planting of the morchella esculenta under the forest in China is promoted, and a new thought is provided for development of characteristic economy under the forest and production of edible mushrooms in China.

The utility model discloses a carya illinoensis seedling growth state detection device which comprises a bottom plate, a punching mechanism used for installing a detection instrument is arranged on one side of the bottom plate, and a supporting mechanism used for limiting and supporting the punching mechanism is arranged above the bottom plate. The top of the bottom plate is provided with a placing mechanism for placing a sensor for detecting the growth state of the seedlings; according to the thin-skinned pecan seedling root detection device, the punching mechanism is arranged to rapidly punch holes beside the roots of thin-skinned pecan seedlings, and temperature and humidity sensors are automatically placed in the holes punched by the punching mechanism through the placement mechanism to detect the temperature and humidity of the roots of the thin-skinned pecan seedlings. The temperature and humidity of the roots of the carya illinoensis seedlings can be detected all the time only by installing the temperature and humidity sensor once, the detection is more authoritative, and a fruit farmer can be helped to better monitor the growth state of the carya illinoensis seedlings so as to better formulate a nursing scheme.

The present application belongs to the technical field of cultivation of Carya illinoinensis. The present application discloses a Carya illinoinensis high-yield tree shape cultivation method. The method comprises the following steps: after planting and fruiting large container seedlings, the main stem is fixed after 1-2 years, the first layer of branches is cultivated, the first layer of main lateral branches is controlled after 3-4 years of planting, the second layer of branches is cultivated, the first and second layers of main lateral branches are controlled after 5-6 years of planting, and the third layer of branches is cultivated, so as to achieve the purpose of rapid formation of high-yield tree shape, shorten the period of tree shape cultivation, and accelerate the high yield of Carya illinoinensis fruits.

1. Name of the designed product: packing can (hickory nut syrup). 2. Use of the designed product: packing can for packing beverage. 3. Design points of the designed product: combination of shape and pattern. 4. Picture or photo showing the design points: front view.

The invention discloses a whole hickory nut kernel extraction method and device, and belongs to the technical field of nut processing. The method comprises the following core steps: alternately carrying out walnut clamping and station conveying through two sets of clamping devices; in the cutting station, synchronous precise annular cutting is carried out along the maximum circumferential contour of the walnuts by using cutting units on the two sides; at the extrusion station, the annularly-cut shell is firstly peeled off, and then radial extrusion force is applied to enable the shell to be regularly crushed along a cutting line; finally, automatic kernel and shell sorting is achieved through a separating mechanism with a built-in screen. The equipment for implementing the method comprises a positioning and clamping unit, a double-side cutting unit, a shelling and extruding unit and a kernel and shell separating unit which work alternately. According to the method disclosed by the invention, double-side cutting guided shell breaking is taken as a core, a pure physical dry continuous process is adopted, the problems of low whole kernel rate, poor efficiency and nutrition loss of a traditional method are solved, the problem of whole kernel extraction of the hard-shell walnuts is solved, industrial production with high whole kernel rate and high efficiency is realized, and the nutrition and flavor of the walnuts are completely reserved.

This utility model discloses a kernel-extracting device for hickory nuts, including a kernel extractor. A feed inlet is located on one side of the upper outer surface of the kernel extractor, and a discharge outlet is located on one side of the lower outer surface of the front end of the kernel extractor. A separation chamber is located on one side of the discharge outlet. A screening mechanism is located on the front outer surface of the kernel extractor. The screening mechanism includes a ramp, a screening frame, a groove, a sieve plate, a baffle, a sliding plate, a limiting plate, a first elastic hemisphere, a second elastic hemisphere, a chute, a fixing plate, a fixing frame, a connecting plate, a cylinder, a limiting groove, a limiting block, a rotating shaft, an eccentric wheel, and a motor. This kernel-extracting device for hickory nuts allows for convenient screening of broken walnut shells and small pieces of walnut kernels fed into the separation chamber. The broken walnut shells slide out through the ramp, facilitating the back-and-forth movement of the screening frame, accelerating the screening speed, and making it easy to disassemble and clean the screening frame, thus offering better application prospects.

The invention relates to the field of rice planting, in particular to a method for improving the yield of rice in soda saline-alkali soil through pecan wood smoke liquid, and provides a method for improving the yield of rice in soda saline-alkali soil through pecan wood smoke liquid. The method for improving the rice yield of the soda saline-alkali soil by utilizing the pecan wood smoke liquid comprises the following steps: 1, disinfecting rice seeds; 2, soaking the seeds with diluted hickory wood smoking liquid; the yield of the rice planted in the soda saline-alkali soil can be increased. The method is low in cost and convenient to treat, can be applied to large-area saline-alkali soil, effectively improves yield constitution factors such as the spike number per plant, the grain number per spike, the maturing rate and the thousand seed weight of rice, and greatly improves the rice yield of the saline-alkali soil; a good application foundation is laid for promoting the growth of saline-alkali soil rice and increasing the yield in agricultural production.

The invention discloses a high-altitude layering method for efficient rooting of carya illinoensis variety seedling branches, and belongs to the technical field of asexual propagation of carya illinoensis. According to the method, high-altitude layering is performed in the growth season of the carya illinoensis, and rooting is promoted; xylem tissue with the thickness of 1-3 mm at a girdling opening is cut off, so that the repair and differentiation process of wound tissue towards the cortex direction is effectively inhibited; the girdling opening is coated with a rooting agent, the forming efficiency and number of root systems are remarkably improved, finally, a matrix containing a certain amount of garden soil is adopted for wrapping to promote rooting, the technical problem that the carya illinoensis variety seedlings are difficult to root is solved, and batch production of the variety self-rooted seedlings is achieved. According to the method, the rooting rate can reach 90% or above, and the rooting number reaches 20 roots per branch or above.

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 utility model discloses a carya illinoensis plant fixing device which comprises a main supporting rod, a fixing base is fixed to the lower end of the main supporting rod, a ground inserting supporting foot is arranged on the lower side of the fixing base, an upper sliding base and a lower sliding base are arranged on the main supporting rod, clamping rods are arranged on the upper sliding base and the lower sliding base, clamping rings are fixed to the outer ends of the clamping rods, and the clamping rings are fixed to the outer ends of the clamping rods. Movable rods are arranged on the rear side of the upper sliding seat and the rear side of the lower sliding seat, the movable rods are sleeved with springs, and the movable rods on the upper sliding seat and the lower sliding seat are fixedly connected with connecting rods. According to the apocarya plant fixing device, the upper sliding seat and the lower sliding seat are arranged on the main supporting rod, the clamping rods and the clamping rings are arranged on the upper sliding seat and the lower sliding seat, and the connecting rod controls the movable rods on the upper sliding seat and the lower sliding seat to move synchronously, so that the clamping rods and the clamping rings on the upper sliding seat and the lower sliding seat are opened synchronously; the fixing work of the carya illinoensis plants can be conveniently and directly completed, and the use efficiency of the fixing device is improved.

A method for agricultural cultivation, domestication, or cultivation of truffle fungi, including a method for isolation and culture to produce pure truffle fungi or mini-truffles, typically species of the genus Tuber or Iamai. Examples of truffles include Tuber melanosporum, Tuber magnatum, Tuber aestivum, Tuber uncinatum, Tuber borchii, species of the genus Imaia, Tuber macrosporum, Tuber gibbosum, Tuber oregonense, and Tuberlyonii. The isolated pure truffles may then be cultured on a nutrient substrate, which may be, for example, fruits, nuts, grains, or parts thereof, to produce truffle-flavored foods. Non-limiting examples of such substrates include rye, barley, lentils, wheat, rice, soybeans, pecans, hazelnuts, pine nuts, walnuts, coffee beans, mustard, cocoa, sesame, sunflowers, grapes, blackberries, blueberries, cherries, kiwis, mangoes, raspberries, and huckleberries.

The utility model discloses a hickory kill green and flavour integration machine belongs to food processing equipment technical field. The integration machine includes: the blanking bin is used for putting the hickory after the astringency treatment, heating storehouse is set up in blanking bin below, is used to carry out the preliminary heating to hickory, flavour component is set up in one side of heating storehouse, and flavour component is in and is used for soaking flavouring material water, transition storehouse is set up in one side of heating storehouse, and inner chamber is communicated with heating storehouse inner chamber, the blanking component is set up between heating storehouse and blanking bin, is used for pushing the hickory falling in blanking bin into transition storehouse, through the utility model, can realize the integrated processing of hickory kill green and flavour process, greatly saves the manual cost, and single machine only needs an operator to be able to complete the feeding and discharging, can directly convey to flavour component after hickory kill green is finished and carries out flavour process, improves the efficiency of hickory processing.

The invention relates to the technical field of fertilization equipment, and discloses a carya illinoensis planting and fertilizing machine which comprises a rack, a traction frame and a fixing frame which are arranged on the rack, a material storage assembly which is arranged on the rack and is used for storing fertilizer, and a fertilization adjusting mechanism and a ditching mechanism which are arranged on the fixing frame, a fixing support is fixedly installed on the fixing frame, and a driving shaft is rotatably installed on the fixing frame. According to the carya illinoensis planting and fertilizing machine, aiming at different requirements of carya illinoensis in different growth stages on a fertilizing range, when the carya illinoensis in a seedling stage is fertilized, a fertilizing opening at the bottom of a uniform shell can be completely opened, so that the fertilizing range is wider; when the adult carya cathayensis trees are fertilized, the fertilization range is accurately controlled by reducing the opening degree of the fertilization openings, and the fertilization range can be flexibly adjusted according to the actual growth stages and requirements of the carya cathayensis trees through the dynamic adjustment mechanism, so that the fertilizer is intensively put into a specified area.

The embodiment of the invention discloses a grease processing technology optimization method for carya illinoensis, and the method comprises the steps: obtaining a plurality of predicted quality indexes at the end of baking in the current baking process of carya illinoensis; when it is judged that the abnormal risks exist in the multiple quality indexes, the corresponding abnormal quality indexes and related baking process parameters are determined; on the basis of the abnormal quality indexes and the baking process parameters, a preset regulation and control strategy library is inquired, and multiple regulation and control instructions for the baking process parameters are determined to be generated; on the basis of each regulation and control instruction, predicting a quality index sequence and baking energy consumption corresponding to each regulation and control instruction through a model prediction controller; solving a target function value jointly determined based on each quality index sequence and the baking energy consumption; selecting the regulation and control instruction with the minimum target function value as the optimal regulation and control instruction at the next control moment; executing the optimal regulation and control instruction; and after execution of the optimal regulation and control instruction is completed, multiple quality indexes at the end of baking are predicted again, and the process is cycled until baking is finished.

The present application relates to the technical field of molecular marker, and more particularly to a kind of SSR molecular marker combination and its application in detecting pecan variety.The SSR molecular marker combination includes: SSR12-1 and SSR6-2;The SSR12-1 is located at Chr12:22685469bp-22685482bp, and repeat sequence is CT, and repeat 7 times;The SSR6-2 is located at Chr06:7785735bp-7785761bp, and repeat sequence is CTT, and repeat 9 times.The molecular marker provided by the present application can accurately and quickly identify pecan variety, and the result is stable and reliable, and it has important significance for the identification of pecan genetic resources.

The apocarya drying machine comprises an outer shell, the upper portion of the outer shell is communicated with a feeding port, a heating wire is installed on the inner wall of the outer shell, a motor is installed on the upper portion of the outer shell, the output end of the motor is connected with a rotating shaft, and the outer side face of the outer shell is connected with a sealing door through a hinge. An upper mounting plate and a lower mounting plate are arranged in the outer shell, through grooves are formed in the outer edges of the upper mounting plate and the lower mounting plate, and a limiting plate is mounted on the inner wall of the outer shell. According to the carya illinoensis drying machine, when a rotating rod rotates, the rotating rod rotates and reciprocates up and down through intermittent pushing of a convex block on a convex plate in cooperation with the elastic force effect of a spring, so that an upper mounting plate, a lower mounting plate and a partition plate are controlled to move up and down, carya illinoensis is vibrated and turned over, and the carya illinoensis drying efficiency is improved. And the carya illinoensis accumulated inside is in contact with heat, so that the carya illinoensis is quickly dried.

This invention provides a chloroplast genome of *Juglans regia* and its application in germplasm identification, belonging to the field of gene technology. The nucleotide sequence of the *Juglans regia* chloroplast genome is shown in SEQ ID NO.1. By comparing the chloroplast genome nucleotide sequence of a sample with that of *Juglans regia*, a similarity index of 99.9% or higher confirms it as *Juglans regia*. The *Juglans regia* chloroplast genome plays an important role in germplasm identification and in constructing a phylogenetic tree of the Juglandaceae family. This invention uses the *Juglans regia* chloroplast genome as a super DNA barcode for identifying Hunan walnut germplasm, providing technical support for the protection of *Juglans regia* germplasm resources and the identification of superior individual plants. It is of great significance for the breeding, genetic diversity evaluation, protection, and utilization of Juglandaceae plants.

The present application provides a kind of detection of pecan anthracnose fungus (Cryphonectria parasitica Murrill) Colletotrichum fructicola ) probe set, rapid detection kit and its method and application, belong to biological detection technical field.Aiming at the current pecan anthracnose fungus identification difficult, excessive dependence on expensive equipment and technical personnel and other limitations, carry out pecan fruit anthracnose fungus LFD-RPA detection technology research, the present application can simply, efficiently detect pecan fruit anthracnose fungus, and there is no cross response with 22 representative strains of anthracnose fungus genus, strong specificity, minimum detection limit is 10 pg genome DNA, high sensitivity.The present application is suitable for the on-site real-time rapid detection of the disease by port quarantine, scientific research units, agricultural and forestry management and planting households and other departments.

The present application relates to the technical field of agricultural product processing, in particular to a kind of automated intelligent grading equipment and method for Carya illinoensis, the grading equipment includes transmission mechanism, transmission mechanism includes the first drive assembly for driving movement of the conveying roller for bearing walnut;Visual inspection mechanism includes at least one visual camera for collecting the appearance image of Carya illinoensis to identify whether it exists damage, sorting execution mechanism includes the second drive assembly for driving movement of the multiple sorting rollers movably arranged.The present application realizes the consistency leap of sorting efficiency and quality by constructing the full-automation closed-loop system of transmission, detection, decision and execution, adopts the working mechanism of sorting roller autorotation and visual camera cooperation, makes walnut tumble naturally in the conveying process, realizes 360° dead angle image acquisition, fundamentally solves the missed detection and misjudgment problem caused by visual fatigue and detection blind area in traditional manual sorting.

The invention belongs to the technical field of carbon nanomaterials, and discloses carbon quantum dots based on carya illinoensis shells as well as a preparation method and application of the carbon quantum dots. According to the carbon quantum dot, carya illinoensis shell powder is adopted as a carbon source, and the carya illinoensis shell powder and PEI are subjected to a hydrothermal method reaction in an aqueous solution to prepare a reaction product containing carbon quantum dot nanoparticles. The functionalized carbon quantum dot nanomaterial has the characteristics that the nanomaterial has a good protection effect on dsRNA, and the occurrence of apocarya anthracnose can be remarkably inhibited through the expression of pathogenic genes of spray-induced gene silencing colletotrichum gloeosporioides. And a new method is provided for green prevention and control of the disease.

The utility model relates to the field of hickory nut processing, and discloses a drying device for hickory nut processing, which comprises a main body frame, a drying tank is rotatably connected in the main body frame, a plurality of through holes are formed in the outer arc surface of the drying tank, a driving motor is mounted above the circle center of the top of the drying tank, and a stirring shaft is mounted at the output end of the driving motor. The exterior of the stirring shaft penetrates through the top of the drying tank, a plurality of stirring blades are circumferentially installed outside the stirring shaft, a shifting plate is installed at the top end of the stirring shaft, and the stirring shaft is driven by the driving motor to rotate forwards and backwards, so that the stirring shaft can drive the multiple stirring blades to rotate synchronously, pecans in the drying tank are stirred, and the pecans are heated better and evenly; the effect of drying the carya cathayensis in batches is improved; meanwhile, the shifting plate is driven to rotate in a matched mode, when the shifting plate rotates forwards and backwards every time and makes contact with the fixing plate, the drying tank is driven to rotate, the heating direction of the drying tank is changed, and it is avoided that one side of the drying tank is overheated during drying.

The utility model proposes a kind of thin shell pecan fruit drum brush cleaning device, it is related to thin shell pecan fruit cleaning field. Including feed tray, the bottom end fixed mounting of feed tray has distributing hopper, and the bottom end fixed mounting of distributing hopper has cleaning cylinder, the outer wall of distributing hopper is worn and has water pipe, the upper of feed tray is provided with cleaning mechanism;The cleaning mechanism includes servo motor, the servo motor is embedded in the top of feed tray, and the power output end fixed mounting of servo motor has driving rod, the bottom end fixed mounting of driving rod has rotating cylinder, the utility model passes through servo motor, driving rod, rotating cylinder and drum brush, and cooperate with sleeve setting cylinder and soft brush, can let fruit in the gap between drum brush and soft brush slip, carry out sufficient brushing, remove dust impurity etc. adsorbed in the gap of fruit outer wall, improve the effect of fruit cleaning, avoid the existence of stain.

The invention relates to the technical field of pecan black spot nondestructive testing methods, in particular to a pecan black spot nondestructive testing method based on spatial offset near infrared spectroscopy, which specifically comprises the following steps: step 1, sample preparation and spectrum acquisition of pecans are carried out; step 2, determining an optimal space offset; step 3, carrying out migration correction on the multi-position spectrum to the optimal offset; 4, shell-shell-free spectrum migration correction and final detection model establishment; and step 5, unknown sample detection. According to the method, sample screening and acquisition standards are standardized in sample preparation and spectrum acquisition links, and data representativeness and consistency are guaranteed; according to the shell-shell-free spectrum migration correction, shell spectrum interference is stripped through an advanced technology, black spot characteristics of kernels are highlighted, and destructiveness of traditional shell breaking detection is avoided.