60results about How to "Adapt to a wide range of environments" patented technology

This invention discloses a making method of a high-precision antenna's specula surface, and relates to the facture of high-precision and light specula surface facture in communication and detection fields. It is based on the skin curve surface stretching die location, uses sticking agent and the cellular interlayer as the medium, the skin curve surface as the working side of the reflecting unit, and it adopts the vacuum subatmospheric pressure technique to make the high-precision specula surface on the supporting bone curve surface. This invention has high precision, and is suitable for all kinds of antenna with vary of curving ratio, calibers and shapes. The specula surface is simple, thin and light. The processing technique is easy, the equipping and adjusting methods are convenient, low cost.

An air-source central air-conditioning hot water triple-generation heat pump unit comprises a compressor, a solar hot water pump, a hot water return pump, a hot water tank, a hot water solenoid valve, an air-conditioning solenoid valve, a four-way valve, a check valve group I, a case, a fan, a check valve group II, an air-source heat exchanger, an air-conditioning heat exchanger, a filter, an air-conditioning water pump, an energy storage tank, a thermal expansion valve I, a balance throttle pipe, a balance solenoid valve, a thermal expansion valve II, a liquid storage tank, an economizer, a liquid-vapor separator and a connecting line. By action of the balance throttle pipe, the check valve groups, the hot water tank and the air-source heat exchanger, the defect that traditional ground source heat pump units are not suitable for being promoted in regions with high building densities and projects with large air conditioning loads is overcome, the source efficiency ratio is improved effectively, health hot water at the temperature of 65DEG C is supplied, the problem of insufficient heat temperatures of hot water caused by inadequate refrigeration in transition seasons is solved, the hot water is output directly through tap water pressure, the dual hot water function of air source and solar energy is achieved, and heating is achieved without electricity at the temperature of minus 20DEG C in winter.

The disclosed manufacture method for a high-precision antenna reflecting plane without honeycomb sandwich comprises: with skin-surface stretching module desk as base, adhesive as medium and skin-surface plate as the operating plane for reflecting plane unit, sticking directly the plate on supporting backbone surface with vacuum negative-pressure technique to obtain the final product. With simple structure and reliable property, this invention benefits to batch production.

The invention provides a motor energy efficiency monitoring method based on a WSN. The method includes the steps that first, input information parameters of a motor are determined, and corresponding wireless sensors are installed on the motor according to the parameters; second, the wireless sensor network is formed by the wireless sensors and wirelessly connected with an upper computer; third, the motor is started, and data of the wireless sensors are collected; fourth, the input parameters and output parameters of the motor are calculated online; fifth, the energy efficiency condition of the motor is evaluated. Through the method, non-invasive-mode energy efficiency monitoring can be performed on the motor, monitoring data are uploaded to a data processing unit through the WSN, energy efficiency data can be analyzed and evaluated, and the running energy efficiency condition of the motor is analyzed online.

The invention relates to a spiral propulsion variable form snake-shaped robot comprising spiral shells (1). Four spiral shells (1) are in one group; spiral teeth are arranged on each spiral shell; the rotating directions of spiral teeth of the two spiral shells (1) of two sides are the same and are opposite to those of the two spiral shells (1) of the middle; a universal joint is arranged between two adjacent spiral shells (1); a hollow shaft (9) is arranged in each spiral shell (1), and the ends of the hollow shafts (9) are connected to steering engine supports (11) through hollow connecting shafts (10); reducing motors (7) are fixed to the hollow shafts (9), outer gears (6) driven by the reducing motors (7) are engaged with inner gears (8) fixed to the inner walls of the spiral shells (1). The robot is capable of operating in different environments, the high passing ability is provided, and the consumed energy is reduced.

A flow stabilizing valve is composed of valve body with left jointer, valve core in the axial hole of valve body and having a central through hole and two radial through holes at its both ends, spring sleeving on small end of valve core, spring holder at right end of valve body, and a throttle valve installed at left end of said central through hole on valve core. On the valve body, there is an outlet A with stabilized flow and another outlet B for excessive flow. When load is changed, the orifice area of said radial through holes on valve core can be automatically changed for pressure compensation, stabilizing the output flow.

The invention discloses a high-low temperature environment air-cooled chiller unit and a control method thereof. By adopting the cooperation of a water system and a cooling system, the overall unit is reasonable in design, intelligent in control, wide in adaptation environment range and stable and reliable in operation, energy is saved, and important significance on improving the reliability, operated for a long term and under the limiting ambient temperature, of the air-cooled chiller unit used in a data center or a process requirement place where cooling is still needed under the high temperature environment and low temperature environment is achieved.

The invention relates to an attitude control method of a snake-like robot. The snake-like robot comprises spiral casings (1) in groups of four, wherein spiral teeth are arranged on each spiral casing (1), the rotating directions of the spiral teeth of the two spiral casings (1) located in the middle are the same, and the rotating directions of the spiral teeth of the two spiral casings (1) located on two sides are opposite to the rotating directions of the spiral teeth of the two spiral casings (1) located in the middle; a universal joint is arranged between two adjacent spiral casings (1). The attitude control method of the snake-like robot is provided aiming at four attitudes including advancing in a hole, advancing on a rough pavement, advancing on a flat pavement and advancing on a column through winding. According to the attitude control method provided for the snake-like robot based on the screw propulsion principle, the snake-like robot can penetrate narrow space; the snake-like robot can change in different motion forms through control of motion of the joints and the spiral casings, so that one robot can move efficiently in different environments and has extremely high passing capacity.

The invention provides a 10KV oil-immersed transformer. The 10KV oil-immersed transformer comprises an oil tank, an iron core, windings, insulating sleeves and an oil temperature measuring device. Transformer oil for cooling and insulating the windings is arranged in the oil tank. A high-permeability crystal orientation cold rolling silicon sheet is adopted in the iron core. The iron core is a core-type iron core. The windings are each of a multilayer cylinder type structure. The oil tank is provided with a conservator for storing and replenishing oil for the oil tank. The conservator is a capsule type conservator. The oil temperature measuring device is arranged at the top of the oil tank. The oil tank is provided with a pressure relief valve. The side wall of the oil tank is a corrugated wall. Dust is sprayed to the surface of the oil tank, and a film is painted to the surface of the oil tank so that an outer protective layer can be formed. The 10KV oil-immersed transformer is low in cost, easy to maintain, good in heat dissipation, high in overload capacity and wide in adaptive environment. It is guaranteed that oil does not need to be replaced when the oil-immersed transformer normally runs, the maintenance cost of the transformer is greatly reduced, and meanwhile the service life of the transformer is prolonged.

A multidirectional bearing honeycomb buffering combined energy absorption structure imitating a footballene structure comprises an energy absorption box and a honeycomb filling structure, and the honeycomb filling structure is installed in the energy absorption box. The honeycomb filling structure is formed by a plurality of single honeycomb cells similar to the footballene structure in an array attaching and transformation mode along the X axis, the Y axis and the Z axis, in the array process, the intersecting edges of every two adjacent honeycomb cells similar to the footballene structure completely coincide, and the honeycomb cells are obtained by connecting twelve pentagonal trusses and twenty hexagonal trusses and then imitating the footballene structure to form a sphere-like polyhedron array; the buffering performance of a buffer filling material is improved through the honeycomb cell structure, the bearing energy absorption capacity of the buffer filling structure in all directions is effectively enhanced, and compared with a traditional polygonal entity array buffering filling structure, the lightweight design is improved to some extent; and the designed buffering structure is combined with an existing buffering energy absorption box, and the combined energy absorption function is achieved.

The invention discloses an uninterruptible DC power supply battery activation control circuit. An uninterruptible DC power supply comprises a battery management circuit, a PWM control driving circuit, a DC-DC converter and a storage battery. The battery activation control circuit comprises an activation operation circuit, an activation signal detection circuit and an activation signal isolation circuit which are connected in turn, and a reference voltage circuit which is used for supplying reference voltage to the activation signal detection circuit, the activation signal isolation circuit and the battery management circuit. The compensation end of the PWM control driving circuit is connected with the output end of the activation signal isolation circuit. The comparison voltage input end of the battery management circuit is connected with the output end of the activation signal detection circuit. The invention also provides a design method of the uninterruptible DC power supply battery activation control circuit. The uninterruptible DC power supply battery activation control circuit is low in realization cost and convenient to use and operate so that the service life of the storage battery can be effectively prolonged, use efficiency of the storage battery is enhanced, practicality is high and popularization and use are convenient.

The invention provides a wagon 120-valve protection hood rivet disassembling device. The rivet disassembling device is composed of a riveting device, a splitter and a hand-operated hydraulic pump. The splitter comprises a splitter oil cylinder assembly, a splitter piston, a cutter head assembly, a positioning sleeve, a splitter connection jacket, a C-shaped clamp, a spring, an oil pipe and a quick-change connector. The riveting device comprises a riveting device oil cylinder assembly, a riveting device piston, an inner sleeve, an outer sleeve, a riveting device connection jacket, a clamping section, an upper limiting sleeve, a lower limiting sleeve, a buffering front sleeve, a buffering rear sleeve, a spring, an oil pipe and a quick-change connector. The hand-operated hydraulic pump is provided with a pump body, a reversing valve, the oil pipe and the quick-change connector. The reversing valve is used in a hand-operated mode. The technical scheme is used for riveting and splitting of pultrusion rivets with the diameter being 12 on the wagon 120-valve protection hood portion, the riveting forming is good, splitting is smooth, and the disassembling device is convenient to carry and operate and capable of quickly riveting or splitting rivet lantern rings under the conduction that no electricity, gas and other power sources exist and achieving disassembly of a 120-valve protection hood.

The invention discloses a manufacturing method of electrodes with a medium impeding discharging of plasma. The manufacturing method includes following steps: selecting either quartz tubes or ceramic tubes as an impeding medium; coating the inner wall of each of the quartz tubes or the ceramic tubes with a conductive layer, coating one ends of the inner walls with welding points fully, and coating the other ends with nothing, wherein thickness of the conductive coatings is 0.01mm; arranging the quartz tubes or the ceramic tubes parallelly or in a matrix. The defects of tube-wire electrode structure and flat-plate electrode structure are avoided, one conductive coating is arranged on the inner wall of each of the quartz tubes or the ceramic tubes, no air exists between the conductive coating and the corresponding inner wall, so that uniformity is high, applicable environment is wide, requirements on performance of a power source are low, and internal discharging is avoided; 2-3 tubes are parallelly arranged, so that the electrodes are suitable for purifying small space of refrigerators and air conditioners; multiple parallel electrodes are arranged in a staggered matrix, so that high-flow gas can be treated.

The invention relates to a leg recovery apparatus after tumor operation. The leg recovery apparatus comprises a bottom plate, an upper rod and a lower rod, wherein two guide rail brackets are fixedlyconnected to the upper part of the bottom plate; a screw rod is rotatably connected between the two guide rail brackets; one end of the screw rod is fixedly connected with a connecting rod; the connecting rod is fixedly connected with an output shaft of a step motor through a coupling; one end of the upper rod is hinged to the end of the bottom plate, the middle part of the upper rod is hinged toone end of the lower rod through a connecting plate, and the other end of the lower rod is hinged to a sliding block; the sliding block is arranged on the screw rod in a sleeving manner and is in threaded fit with the screw rod; two fixing pieces are arranged on the upper rod; a fixing plate is fixedly connected between the two fixing pieces; a fixing piece is arranged on the lower rod; a small bracket is fixedly connected to the lower part of the fixing piece; a plurality of binding bands are arranged on two sides of the fixing plate and the small bracket; and an elastic piece is arranged oneach binding band. The leg recovery apparatus disclosed by the invention is small in size, and simple in structure; and the elastic pieces are arranged, so that the situation that when the legs are bent, knees have definite motion surplus quantity, and the sprain of the knees cannot generate.

The invention relates to a lemon planting method capable of rot prevention. The method comprises the steps that 30-40 years of culture soil is used for culture of lemon seedlings, and the culture of the lemon seedlings is conducted for 2-3 months; the cultured lemon seedlings are grafted to grapefruit seedlings, the grafting positions of the lemon seedlings and the grapefruit seedlings are wrapped through preservative films, culture is then conducted for 5-6 months, and the grafting is completed; a fertilizer is prepared, wherein the fertilizer is prepared from, by weight, 5 parts of eggs, 3.5 parts of brown sugar, 6 parts of salicylic acid, 6 parts of vitamin C and 2 parts of ferrous sulphate; mixed culture fermentation is conducted for 3-5 months; the grafted lemon seedlings are transplanted to fruit land for planting, and fattening is periodically conducted with the fertilizer. Compared with an existing method, the lemon seedlings are grafted to the grapefruit seedlings, the growth rate can be increased, the disease resistance is high, and the adaptable environment is wide; the leaves are small; the cost can be reduced due to the fertilizer, the fruit trees can be prevented from rot, and the operation is simple.

The invention discloses a spring support for a pipeline. The spring support comprises a housing. A top plate is arranged at the upper end of the housing. Fixed bolts are arranged on the top plate. A bottom plate is arranged at the lower end of the housing. A spring base is connected to the upper surface of the bottom plate. A spring is fixedly connected to the spring base. A bearing plate is connected to the top end of the spring. Sliding blocks are arranged at two ends of the bearing plate. Slideways are arranged on the inner side of the housing. The sliding blocks are connected with the slideways in a sliding manner. A pointer is arranged on the left side of the bearing plate, and penetrates the housing. The bearing plate is fixedly connected with a pull rod. The pull rod penetrates the spring, the spring base and the bottom plate to be connected with a fixed bearing through a nut. A traction type dynamometer is connected to the upper end of the bearing plate, and is fixedly connected with the top plate. The spring support is wide in application range, is stable to operate, is detachable, is wide in adaptation environment, is long in service life, is accurate to position, and is worth being popularized.

The invention discloses a preparation technology of a stereoscopic relief sculpture, and relates to the technical field of filter processing equipment. The preparation technology is characterized by comprising the following steps: die manufacturing and casting moulding, wherein the die manufacturing comprises the following steps: (1), 1.8-2.2 parts by weight of gypsum powder and 0.9-1.1 parts by weight of water are sufficiently mixed and uniformly stirred; (2), gypsum mixed in the step (1) is moulded into a sheet-shaped gypsum board; (3), relief sculpture patterns are carved on the gypsum board through a carving machine; and (4), a die is formed after moulding and rolling over; and the casting moulding comprises the steps as follows: a, a material is poured into the die moulded in the step (4) through a machine, and waiting is performed for 13-18 minutes; b, a semi-finished product moulded in the step a is polished and restored; c, a semi-finished product moulded in the step b is restored after paint spraying; and d, after the paint spraying is performed again and diamonds are added, a finished product is obtained. The preparation technology of the stereoscopic relief sculpture facilitates industrialized production, has high production speed, excellent product quality, wide application environment and long service life, and can be used for decorating various environments indoors and outdoors.

The invention provides an electric power circuit monitoring and protection device and a protection method. The electric power circuit monitoring and protection device comprises a switching value input circuit, an analog input circuit, a switching value output circuit, an alarm module and a central processing unit, wherein a signal output end of the switching value input circuit is connected with a switching value signal input end of the central processing unit; a switching value signal output end of the central processing unit is connected with a signal input end of the switching value output circuit; the analog input circuit is connected with an analog-to-digital conversion signal input end of the central processing unit through an analog-to-digital conversion circuit; a display signal output end of the central processing unit is connected with the alarm module.

The invention discloses a gravity swing arm power generating method. Specifically, the gravity of a gravity device is adopted as one of power sources of a device, so that the aim increment acting of the device is achieved. A power system and a drive system are included. The power system comprises a power supporting body, the gravity device, a power arm, a transmission shaft, a unilateral bearing, a gearcase, a motor shaft and a generator, the power supporting body supports the structure of a whole gravity swing arm power generator unit, the gravity device is hung on the power arm, the upper end of the power arm is connected with the transmission shaft, the other end of the transmission shaft is connected with the unilateral bearing, the unilateral bearing is connected with the gearcase, and the other end of the gearcase is connected with the generator through the motor shaft. The method has the advantages that the structure is simple, electric energy can be produced constantly and stably according to the standard configuration power of the generator unit, and the use and adaptation environment of the gravity swing arm power generator unit is wider.

The invention discloses a triammonium citrate modified trace cobalt-doped magnesium-aluminum ternary hydrotalcite-like composite catalyst and a preparation method and application thereof.The preparation method of the catalyst comprises the steps that cobalt salt, magnesium salt, aluminum salt, an alkali source and triammonium citrate are mixed to prepare a catalyst precursor solution, and the catalyst precursor solution is subjected to a hydrothermal reaction to obtain the trace cobalt-doped magnesium-aluminum ternary hydrotalcite-like composite catalyst. The triammonium citrate modified trace cobalt doped magnesium-aluminum ternary hydrotalcite composite catalyst is obtained. According to the preparation method disclosed by the invention, the triammonium citrate is used as a reducing agent to regulate and control the hydrothermal synthesis process, so that the prepared triammonium citrate modified trace cobalt-doped magnesium-aluminum ternary hydrotalcite-like composite catalyst has the advantages of low leaching risk, high catalytic activity, good recycling property and the like, and is a novel hydrotalcite catalyst with excellent performance; the method can be widely used for degrading organic pollutants (such as antibiotics) in a water body, and is high in use value and good in application prospect. The preparation method provided by the invention has the advantages of simple preparation conditions, high yield, low cost, strong operability and the like, and is easy for batch production.

The invention relates to a planting method capable of improving lemon quality. The method includes the following steps that lemon seedling culture is carried out with 30-year to 40-year compost for 2-3 months; lemons obtained after seedling culture are grafted on grapefruit seedlings, preservative films are adopted for covering the grafted positions of the lemon seedlings and the grapefruit seedlings, and grafting is completed after culture is carried out for 5-6 months; fertilizer is prepared, wherein the fertilizer is prepared from, by weight, 5 parts of eggs, 3.5 parts of brown sugar, 5 parts of agar, 4 parts of aschersonia montagne powder, 5 parts of amur cork tree bark and 4 parts of rapeseed cakes; mixed fermentation is carried out for 3-5 months; the grafted lemon seedlings are transplanted to a fruit field to be planted, and fattening is carried out regularly through the fertilizer. Compared with the prior art, the lemon seedlings are grafted on the grapefruit seedlings, the growth speed can be increased, the disease resistance capacity is high, the application environment is wide, and leaves are small; the fertilizer can improve soil, improve soil fertility, improve lemon quality and has good economic value.

The invention discloses a mechanical gravity swing arm power generation method. Specifically, through the gravity characteristic of a gravity device, the gravity is used as a power source of a machine, and the gravity is used for achieving the effect of doing work to a mechanical gravity swing arm. The mechanical gravity swing arm comprises the gravity device, a power generation device and a driving device. The gravity device comprises a gravity object, a power arm, a transmission shaft and a one-way bearing. The power generation device comprises a transmission shaft, a gear box, an electric generator, a cabin and a supporting body. The driving device comprises movable connectors, a push rod, a round wheel, a round wheel bearing, a transmission shaft, a motor and a supporting body. The mechanical gravity swing arm power generation method has the advantages that the structure is simple, and the method can widely adapt to environments.

The invention discloses a design method of a battery activation control circuit of an uninterruptible DC power supply. The uninterruptible DC power supply comprises a battery management circuit, a PWM control drive circuit, a DC-DC convertor and a storage battery, wherein the battery activation control circuit comprises an activation operation circuit, an activation signal detection circuit, an activation signal isolation circuit and a reference voltage circuit; and the design method comprises the steps of (1) selecting components with proper parameters for forming the reference voltage circuit; (2) connecting the reference voltage circuit; (3) selecting components with proper parameters for forming the activation operation circuit; (4) connecting the activation operation circuit; (5) selecting components with proper parameters for forming the activation signal detection circuit; (6) connecting the activation signal detection circuit; (7) selecting components with proper parameters for forming the activation signal isolation circuit; (8) connecting the activation signal isolation circuit; and (9) connecting the battery activation control circuit. According to the design method, the service life of the storage battery can be effectively prolonged and the service efficiency of the storage battery is improved.

The invention relates to pseudomonas putida WJ having n-hexylene degradation capacity. The pseudomonas putida WJ is preserved in the China typical culture collection center, the preservation number is CCTCC NO: M2012295, and the preservation date is July 19, 2012. The pseudomonas putida WJ is capable of achieving efficient degradation and good in endurance capacity.

The invention discloses a vehicle network interconnection optimization control method based on a market clearing price auction mechanism. The method includes: S1, submitting the initial auction information set b<n><(0)>; S2, the grid transaction control center determining the initial electricity price set p (0) according to the auction information set and the optimization objective; S3, accordingto the determined electricity price, adjusting respective auction information, and reporting auction information b<n><(k)>again;; S4:, according to the re-submitted auction information set and the optimization objective, the grid transaction control center determining the k-th electricity price set p (k); S5, judging whether p (k)-p (k-1)>epsilon stop, if yes, updating times k=k+1, and returning to step S3; otherwise, proceeding to step S6; S6, obtaining a charging strategy b<n><*>. The present invention utilizes a power price incentive mechanism to guide the electric vehicle user to arrange the charging time and charge quantity reasonably, which has good grid compatibility. Electric vehicle users do not need to provide their own sensitive parameters to the power grid system through the auction mechanism, the privacy of the users is protected, and the electricity price is determined through auction information to ensure the rationality of the electricity price.

The invention relates to an attitude control method of a snake-like robot. The snake-like robot comprises spiral casings (1) in groups of four, wherein spiral teeth are arranged on each spiral casing (1), the rotating directions of the spiral teeth of the two spiral casings (1) located in the middle are the same, and the rotating directions of the spiral teeth of the two spiral casings (1) located on two sides are opposite to the rotating directions of the spiral teeth of the two spiral casings (1) located in the middle; a universal joint is arranged between two adjacent spiral casings (1). The attitude control method of the snake-like robot is provided aiming at four attitudes including advancing in a hole, advancing on a rough pavement, advancing on a flat pavement and advancing on a column through winding. According to the attitude control method provided for the snake-like robot based on the screw propulsion principle, the snake-like robot can penetrate narrow space; the snake-like robot can change in different motion forms through control of motion of the joints and the spiral casings, so that one robot can move efficiently in different environments and has extremely high passing capacity.

The invention relates to a planting method for a high-acidity lemon. The planting method comprises the steps of using cultivated soil which is kept for 30-40 years to conduct seedling growing on the lemon, and conducting the seedling growing for 2-3 months; grafting the lemon that has accomplished the seedling growing to a grapefruit seedling, using preservative film to wrap the grafting place of the lemon seedling and the grapefruit seedling, and cultivating for 5-6 months to accomplish the grafting; collocating a fertilizer, wherein the fertilizer is prepared from, by weight, 5 parts of eggs, 3.5 parts of brown sugar, 3 parts of radix sophorae flavescentis, 10 parts of talcum powder, 5 parts of pericarpium citri reticulatae powder and 4 parts of hawthorn powder; conducting mixed fermentation for 3-5 months; transplanting the grafted lemon seedling to a fruit land to conduct sowing, and applying the fertilizer at fixed periods. Compared with the prior art, the lemon seedling is grafted to the grapefruit seedling, thus the growth speed can be improved, the disease resistant ability is high, and the adapting environment is broad; the leaves are small; the cost of the fertilizer is low, and the grown lemon is large in size and low in acidity.

The invention relates to a lemon root-fixing planting method. The lemon root-fixing planting method includes the following steps that lemon seedling culturing is carried out with 30-year-old to 40-year-old culturing soil, and seedlings are cultured for 2 months to 3 months; lemons subjected to seedling culturing are grafted to grapefruit seedlings, the grafting portions of lemon seedlings and the grafting portions of the grapefruit seedlings are wrapped with fresh keeping films, culturing is carried out for 5 months to 6 months, and grafting is completed; fertilizer is prepared from, by weight, 5 parts of eggs, 3.5 parts of brown sugar, 12 parts of pig manure, 7 parts of cake fertilizer and 2 parts of humus; the mixture is mixed and fermented for 3 months to 5 months; the grafted lemon seedlings are transplanted to fruit land and planted, and fattening is periodically carried out through the fertilizer. Compared with the prior art, the lemons seedlings are grafted on the grapefruit seedlings, the growing speed can be increased, the disease resistance is high, and the acclimatization is wide; leaves are small; nutrients of roots of trees can be provided through the fertilizer, root development of the tree seedlings is promoted, and the root fixing effect is achieved.

The invention relates to a lemon planting method. The method includes the following steps that lemon seedling culture is carried out for 2-3 months with culture soil of 30-40 years; cultured lemon seedlings are grafted onto pomelo seedlings, the grafting parts of the lemon seedlings and the pomelo seedlings are wrapped by preservative film, culturing is carried out for 5-6 months, and then grafting is completed; fertilizer is prepared, wherein the fertilizer is prepared from, by weight, 5 parts of eggs, 3.5 parts of brown sugar, 6 parts of yoghurt and 12 parts of fresh milk; mixed fermentation is carried out for 3-5 months; the grafted lemon seedlings are transplanted into a fruit field for planting, and fattening is carried out periodically with the fertilizer. Compared with the prior art, the lemon seedlings are grafted onto the pomelo seedlings, the growth speed can be increased, and high disease resistance and high environmental adaptability can be achieved; the problem that leaves are small is solved; the fertilizer can increase the lemon growth speed, and thus leaves are bigger; lemon pulp is soft, and thus the taste is improved.