137results about How to "Increase room for growth" patented technology

The invention belongs to the field of fruit tree cultivation and fruit tree ecology and relates to a double-sector trellis cultivation type pear tree form and a shaping method thereof. Only two principal branches are reserved on a pear tree, a 90-degree included angle is formed between the two principal branches which are fixed to a Y-shaped support, and the two principal branches are symmetrically spread towards the space between lines; a base lateral branch is arranged on each of the two sides of the base of each principal branch, and a plurality of monopodium non-pruning type bearing branch groups are evenly arranged on and above the middle portion of each principle branch in a stagger mode; a 90-degree side angle is formed between each base lateral branch and the corresponding principal branch; a 90-degree base angle is formed between each monopodium non-pruning type bearing branch group and the corresponding principle branch, and the monopodium non-pruning type bearing branch groups are spread in parallel in the line direction; lateral branch bearing branch groups are formed on the base lateral branches through bud carving and non-pruning; weak shoots are taken as the main part of each principal branch, and the crown is spread to be sectors on the two sides of the Y-shaped support. The shaping method comprises the steps of erecting the Y-shaped support and a steel wire gauze surface, shaping at the first year, shaping at the second year and shaping at the third year. The method is convenient to operate and remarkable in effect.

The invention discloses a silicon nitride nanoribbon aerogel and a preparation method thereof, and the method comprises the following steps: 1) preparing polysiloxane sol; 2) preparing slurry; 3) constructing a three-dimensional porous carbon fiber framework formed by mutual lap joint of short-cut carbon fibers bonded by the siloxane sol; 4) curing and cracking, to be more specific, heating the three-dimensional porous carbon fiber framework to the curing temperature of the polysiloxane sol, carrying out heat preservation treatment, carrying out heating and heat preservation treatment in a nitrogen atmosphere, and cooling to the room temperature in a furnace so as to obtain a carbon fiber / silicon nitride nano fiber composite block body; and 5) decarbonizing, to be more specific, heating the carbon fiber / silicon nitride nano-fiber composite block to 400-1000 DEG C in air, and carrying out heat preservation treatment for 2-4 hours to obtain the silicon nitride nanoribbon aerogel. The silicon nitride nanoribbon aerogel prepared by the method has quite excellent high-temperature stability and thermal insulation performance, the brittleness problem of the traditional ceramic aerogel isovercome, expensive drying equipment and low-efficiency drying processes are not needed, and the silicon nitride nanoribbon aerogel is low in cost, high in efficiency and suitable for the fields of heat insulation, heat preservation, wave transmission and the like.

The invention discloses a teak low-chipper sprout-promotion rapid-propagation seed-growing method. Seeds are soaked by lime water and gibberellin and then sowed, then seedlings are transplanted into a first nutrition substance container to cultivate mother seedlings to a stage when leaves are mutually overlapped, then the seedlings are graded and arranged according to certain planting space, when ground diameter of the mother seedlings is 0.4-0.8cm, the mother seedlings are planted into a plastic pot with a bottom support to be bred, wherein the mother seedlings are not separated from container cups, and second nutrition substance is arranged in the plastic pot. After 10-15 days, the mother seedlings are cut at a position where base parts of the mother seedling are close to the ground to promote sprouting, collecting cuttings and arranging the cuttings in a container cup provided with third nutrition substances in cottage mode, growing seedlings on an elevated seedling bed in a plastic greenhouse, controlling air temperature and relative humidity of a cottage bed by utilizing a greenhouse temperature and moisture adjuster, and thus obtaining teak container cottage seedlings. By means of the teak low-chipper sprout-promotion rapid-propagation seed-growing method, cottage branches are short, interval time of cutting collection is shortened, breeding efficiency is improved, field condition requirements of nursery gardens are not strict, management is convenient, cutting quality is easy to control, cottage survive rate is high, and economic benefit is good.

The invention relates to a dedicated filler for a constructed wetland and a preparation method for the filler and belongs to sewage reclamation and reuse treatment method in environmental engineering. The dedicated filler for the constructed wetland adopts a cuboid structure and is prepared by mixing different proportions of residual sludge in a sewage plant with clay, dioscorea villosa or reed sections respectively as required and then treating, forming and sintering the raw materials. The die size and the open hole size and direction of the filter are determined according to the purposes of the filter; the holes are cuboidal or cylindrical; and the holes are vertical to the big surface. The invention has the advantages that a sludge hollow brick has the characteristics of high strength, low cost, long life and good effect of adsorbing pollutants; the engineering construction and the operating maintenance at the later stage of the filler for the constructed wetland are facilitated; the service life of the filler for the constructed wetland is prolonged; and the effect of removing phosphorus from the sewage is enhanced. The residual sludge of the sewage plant is subjected to resource utilization and serves as the raw materials, so the problem of treatment on the residual sludge of the sewage plant is solved and the influence of the residual sludge on the environment is reduced.

The invention discloses a passion fruit cultivation method, and relates to the technical field of fruit tree cultivation. According to the method, a cultivation frame provided with stand columns which are arranged in a rectangular array mode is arranged on the ground, a lower cross rod with the length ranging from 0.3 m to 0.5 m is installed on the portion, 0.8 m-0.9 m away from the ground, of each stand column, and an upper cross rod with the length ranging from 1.2 m to 1.5 m is installed on the portion, 1.25 m above the corresponding lower cross rod, of each stand column; the two ends of each upper cross rod are connected with the two ends of the corresponding lower cross rod through inclined struts respectively, the inclined struts on the same side of the same column of the stand columns are connected through five longitudinal lines respectively, and the lower cross rods on the same column of the stand columns are connected through middle part connection lines of the lower cross rods. The method comprises the steps of cultivation, guiding and binding on all levels of tendrils of passion fruit. Compared with the prior art, the growing space for branches and tendrils of the passion fruit is large, ventilation and light penetration are good, the fruits are not prone to be shaded by the branches and leaves, fruit coloring is promoted, the sugar content is increased, the quality of the fruit is high, the average yield per mu ranges from 2,000 kg to 2,250 kg, and the economic benefit is high; the passion fruit cultivation method has the advantages that the production cost and management cost are reduced, work and labor are saved, and operation is easy and convenient.

The invention provides an acellular dermal matrix guided tissue regeneration membrane material as well as a preparation method and application thereof, and relates to the technical field of medical biological materials. The preparation method provided by the invention comprises the following steps: pretreating, removing an epidermal layer, preparing a loose surface, stabilizing, performing the accellular treatment, washing, and sterilizing. A membrane material prepared by the method provided by the invention adopts fish skin as a raw material and has a three-dimensional space framework structure, and comprises a compact surface formed by a biological substrate membrane and a collagen loose surface formed by a dermal scaffold. By adopting the membrane material provided by the invention, therisk of the existing tissue restoration material in carrying and propagating the human-animal viruses can be avoided, the cell components can be completely removed, the immunogenicity is low, the clearance of the collagen fibers is increased, a corium layer structure is reserved, the tissue compatibility is good, the mechanical shielding effect is good, and the generation of new bones can be facilitated; and when used for restoring and treating the bone deficiency of an oral implantation operation, the material is digestible, and the second operation and the injury of the membrane material topatients can be effectively avoided.

The gas-phase double-dynamic alcoholization fermentation method of tobacco is characterized by that it can make the tobacco raw material placed in fermentation tank implement fermentation under the following conditions; introducing compressed air into fermentation tank and making periodic pulsed pressurization and decompression process, the pressure pressurized into the fermentation tank every time is up to 0.10-0.25 MPa, and retained in 1-50 min., then the pressure is released, and decompressed to 0.0-0.5 Mpa, and retained in 1-60 min., and the periodic pulsed circulation time from pressurization to decompression is 1-120 min., its fermentation temp. is 26-46 deg.C, humidity is 80%-95%, and the fermentation time is 20-30 day so as to implement gas-phase double-dynamic fermentation of tobacco alcoholization, and can raise colour and taste of tabacco.

The invention relates to an integrated high propagation method of water planting of virus-free potato seeds and seedlings. The method comprises the steps that a multiplication technology of the water-planting virus-free seedlings and a water planting production technology of the seedlings and the seeds are integrated, and the concentration of nutrient solution components, the light quality of a supplementary light source, hormone components, seedling cutting times and the like are optimized at the same time. According to the method, the stability and security are high, operation and daily management are simple and convenient, the maintenance and production costs are low, the sound seedling index of water-planting potato plants are significantly improved, the yield and quality of the seedlings and mini-potato are improved, the plant propagation coefficient is enlarged, the production cycle of the mini-potato is shortened, and the method is of great importance in breeding of the potato seeds and seedlings.

The invention relates to a sterilization system for a medium, a method for sterilization of a medium by using the sterilization system and a culture method for cordyceps militaris. The sterilization system for a medium comprises a steam generator and a sterilization cabinet connected through an exhaust pipeline, wherein the exhaust pipeline connected with the end of the sterilization cabinet is divided into two branch pipelines, one branch pipeline is straight, and a vacuum tank and a water circulating vacuum pump successively connected are installed on the other branch pipeline. According to the invention, voidage of the medium is increased, growth space of mycelia is enlarged, the medium has a fast cooling speed and a high drying degree, the purpose of improving biotransformation efficiency is finally achieved, production cost is reduced, which is favorable for popularization and application of corresponding technologies, and a high practical value and a high application value are obtained.

The invention discloses conical surface percolation type device and method for collecting root exudates of soil cultivation plants. The collection device comprises a growing box and a collection box, wherein holes are formed in the outer wall of the growing box and are used for filling agar. A collection hole is formed in a connection part of the cylindrical growing box and the lower end of the collection box; the lower end of the whole box body is provided with a rubber plug with a hole and is connected with a resin column by a guide pipe. The novel collection method for the root exudates of the soil cultivation plants comprises the following steps: firstly, enabling the plants to grow in soil of the growing box; enabling plant roots to penetrate through the agar to enter the collection box filled with quartz sand; treating and collecting the root exudates of the plants in the collection box. The conical surface percolation type device and method are suitable for researching the root exudates of the plants under soil cultivation conditions; the growth of the roots is not disturbed and a root environment is not damaged; a collection environment is close to a natural growing state of the plants; the collection method has a small occupied area and the available growing space of the plants is large. The method is low in cost and strong in practicability and has a very good application value.

The invention discloses a wide-width wheat sowing method for applying seeds and fertilizer simultaneously in a vertically layered mode.The method includes the steps that wheat seeds and fertilizer are applied at a time through a wheat seed and fertilizer simultaneously sowing machine of a vertical structure, the line spacing of the wheat is 18-32 cm, and the sowing width is 5-15 cm; the wheat seeds are located at the positions, 2-4 cm below the ground, in soil, the fertilizer is located in the positions, 2-12 cm vertically under the seeds, in soil, the fertilizing amount is 20-70 kilograms per mu, and the sowing amount is 7-30 kilograms per mu.The method has the advantages that the line spacing and sowing width of the wheat are increased, ventilation and light transmittance among wheat are improved, photosynthesis is enhanced, individual wheat plants are good in growth vigor, and the group quality is high; the fertilizer is located under the seeds, root systems are close to the fertilizer, and the rate of absorption and utilization of nitrogen, phosphorus and potassium is raised at a low temperature; the fertilizer is applied deeply in soil, the roots of the wheat are deep, and drought resistance and lodging resistance of the wheat are improved; the seeds and the fertilizer are applied at a time, sowing and fertilizing are simplified, and input of labor is reduced.

The invention relates to a vegetative reversed filter concrete block and a retaining wall. The block comprises a front side wall, a back side wall, a first side wall and a second side wall, the first side wall is opposite to the second side wall, the front side wall and the back side wall are respectively connected between the first side wall and the second side wall, a middle partition plate is arranged between the first side wall and the second side wall and is connected between the front side wall and the back side wall to divide the inside of the block into at least two portions, and through holes are arranged on the first side wall and the second side wall. The vegetative reversed filter concrete block is made of special grading permeable concrete, has a certain porosity and permeates water but not soil, the back pressure applied to the block in water level receding can be relieved, safety and stability of the retaining wall are enhanced, animal and plant growth and water flow are facilitated, and an original environment is kept as far as possible.

A preparation method of growing a needle-shaped network-structure nickel cobalt flexible electrode by taking carbon fiber as a support body comprises the steps of preparing a carbon fiber precursor from a PAN solution by an electrospinning method, performing pre-oxidization processing, and performing low-temperature carbonization to obtain a flexible carbon fiber; immersing the flexile carbon fiber in a mixed solution of a nickel salt and a cobalt salt, performing hydrothermal reaction by taking urea as a precipitant, and performing calcination. The preparation method is simple to operate andis low in cost, the prepared carbon fiber substrate is good in flexibility, the space among the fibers is larger, residual surface treatment is not needed due to an oxygen-containing functional group,the needle-shaped nickel cobalt is grown to form a unique network structure and is uniformly distributed in a flexible carbon fiber framework structure, the flexible electrode material is combined with favorable cycle stability of the carbon material and high energy density and specific capacity of the nickel cobalt, the electrochemical performance of the electrode is integrally improved, and theservice lifetime also can be remarkably prolonged.

The invention relates to a plant-type air purification device. The device comprises a shell, a sealing door, a plant placement frame, a water tank and a fan, wherein a water collection tank is arranged in the shell; the plant placement frame is arranged above the water collection tank; the plant placement frame comprises at least one placement frame unit; the placement frame unit comprises at least two placement grooves formed at intervals up and down; at least one potted plant is placed in each placement groove; the plants extend out of the placement grooves so as to reduce influence of the plant placement frame on plant growth, benefit plant growth and improve an air purification effect; the water tank and the fan are positioned below the water collection tank, a water pipe leads water into a flowerpot at the upper end of the plant placement frame, and the water is dropped into a flowerpot on the lower layer sequentially through water permeating holes and water via holes, is sequentially dropped out layer by layer, and finally is returned into the water tank through a water outlet of the water collection tank so as to implement recycling of the water; the sealing door is hinged and fixed on the shell, and air outlet holes are formed at the upper side of a frame, so that the air certainly is purified by the plants before flowing out of the air outlet holes.

The invention discloses a floating seedling raising method suitable for sweet sorghum cultivation. The method utilizes the characteristics of waterlogging resistance and drought tolerance of sweet sorghum, aims at shortcomings of a seedling raising manner in a traditional seedling raising land and uses floating seedling raising methods of flue-cured tobacco and other sorghum planting for referenceto develop the floating seedling raising method suitable for the sweet sorghum. The method disclosed by the invention refines seedling raising operation procedures, and has the advantages of being suitable for longer-distance transportation and suitable for commercialized seedling raising, improving a survival rate of transplanting, having simple seedling raising management, saving labor and time, and basically having no seedling recovering stage after transplanting.

Disclosed is a novel method for constructing an ecological slope protection substrate, which pertains to the field of slope protection engineering, ecological restoration engineering and greening engineering. The construction process of the method of the invention is: first, leveling the slope surface needing restoring, excavating mouth-shaped pits on the slope surface, filling the mouth-shaped pits with multi-functional soil and finishing the construction of the slope protection substrate. The method for constructing the ecological slope protection substrate provided by the invention, by arranging the mouth-shaped pits on the slope surface, not only can change the status of soil impoverishment and the growth environment of vegetations, and provide essential fertilizers and nutrient substances for the sustainable growth of plants, but also can greatly increase the cohesive force between the guest soil layer and the fraction excavated, and increase the integral stability of the guest soil layer so as to effectively prevent the slope surface from integral damage by the continuous effect of rain. The method of the invention changes the mechanical characteristics and construction modes of the substrate and improves the present statuses of the poor stability and soil impoverishment of the substrate in the ecological slope protection.

The invention discloses an artificial synthesis method for a gem-quality colorless diamond. The method comprises the following steps: firstly pressing a Fe-based metallic catalyst, high-purity graphite and a microelement into a diamond growth layer; placing the diamond growth layer and a nitrogen removal metal layer in a high-purity magnesium oxide cup in different arrangement modes to form a diamond synthesis column; sequentially arranging a heating carbon tube, a pressure transfer salt tube and composite pyrophyllite outside the diamond synthesis column, arranging a heating carbon plate and an electric conductive metal ring at the two ends to combine to form a diamond synthesis block; drying the diamond synthesis block in vacuum, putting the dried diamond synthesis block in a high temperature press for 24-300 hours at the temperature of 1300-1500 DEG C and under the pressure of 5.5-6.5 GPa, and synthesizing at the high temperature and the high pressure to prepare the colorless diamond. The structure used in the method is reasonable, the preparation operation is simple, the cost is low, the crystal form of the obtained colorless diamond is intact and consistent, the granularity is even, the color is pure, the conversion rate is high, and the difficult problems of long synthesis period, low yield and poor consistency of the conventional colorless diamond are effectively solved.

The invention relates to a method for growing seedlings of pomelos. The method includes sequential steps of sowing seeds and cultivating rootstock; digging field planting pits; planting the rootstock seedlings in fields; carrying out grafting management. The method has the advantages that the method is high in pollination efficiency and seed collection quantity, early in seed collection time and good in stock-scion grafting compatibility, and the rootstock is high in disease resistance; shortcomings of low winter and spring temperatures, short illumination time, great humidity variation and insufficient soil nutrient supply can be overcome, and growth of the rootstock seedlings can be greatly accelerated; seedling recovering stages due to damage to root systems can be omitted, the growth density of plants is obviously lowered after the plants are planted in the fields, accordingly, tree growing spaces can be greatly increased, utilization of illumination, water and nutrients can be greatly improved, a large quantity of nutrition can be accumulated in trees, tips of branches can grow fast, trunk diameters and thicknesses can be quickly increased, grafting can be carried out in advance, tree forms can be formed early after the trees are grafted, flowering and fruit bearing can be shifted to an earlier time, and economic benefits can be realized quickly; organic fertilizers contain comprehensive and balanced nutritional components, accordingly, growth and development requirements of the pomelos can be met, and growth of the pomelos can be accelerated.

The invention relates to an in-vitro three-dimensional amplification culture method for NK cells. The culture method comprises the following steps: obtaining NK cells; inoculating a three-dimensional culture bracket with the NK cells; and performing in-vitro three-dimensional amplification culture, wherein the three-dimensional culture bracket is a chitosan-sodium alginate bracket. Through the porous structure as well as the mechanical properties and biocompatibility of the chitosan-sodium alginate bracket, the growing space of the NK cells and the contact area with nutrient substances are enlarged, and the NK cells can be uniformly distributed in the chitosan-sodium alginate bracket, thus the cell activity of the NK cells can be improved, and the improvement of the amplification rate and killing activity of the NK cells is facilitated; and the defects such as low activity and low amplification rate of NK cells caused by culturing the NK cells with feeder cells in a two-dimensional environment in the prior art are solved.

The invention relates to a novel wall vertically greening system and belongs to the technical field of wall greening. The novel wall vertically greening system improves the survival rate and prolongsthe growth life of vertically greening plants, focuses on plant habits, emphatically solves the problems of root compatibility and root system permeability, optimizes the soilless culture technology,improves the covering rate of the early wall greening stage, reduces resource consumption and meets the requirements on construction fireproofing. Water of a water inlet pipe is guided to the top endof a wall surface and dropwise and uniformly feed into the top row of planting boxes; after irrigation of the first row of planting boxes is completed, superfluous water flows to a next layer of planting boxes via a drainage port prerformed at the bottoms of plastic boxes to achieve layer-by-layer irrigation; after irrigation of the bottom layer is completed, superfluous water is collected insidea drainage channel for drainage or recycling. Therefore, the novel wall vertically greening system is reasonable in structural design, water-efficient, convenient to maintain, high in plant coverage rate and survival rate and applicable to generalization and application.

The invention discloses an atomization cultivation method of sedum aizoon. The atomization cultivation method includes the steps of 1), processing cutting branches; 2), arranging an atomization bed, mounting a foam board on the atomization bed, and subjecting the foam board to dislocation punching, wherein the bore diameter is 4cm, the line spacing is 15cm, the row spacing is 15cm, and the well-prepared cutting branches are fixed in cutting holes of the culture bed with sponge bars; 3), adding nutrient substances in an automatic atomization device, controlling liquid temperature to be from 15DEG C to 20DEG C, performing intermittent day-and-night atomization on the sedum aizoon for 5-10 minutes each time, wherein atomization time interval ranges from 6 minutes to 10 minutes; 4), controlling the growth temperature of the sedum aizoon to be from 20DEG C to 25DEG C with the humidity ranging from 80%-90%; 5), after the sedum aizoon takes roots, replacing the nutrient substances and cooling the humidity to 70%-80%. The sedum aizoon cultivated with the method is unaffected by season, yield per unit area is high, and the sedum aizoon is neat in growth and suitable for mass cultivation.

The invention discloses an adjustable seedling raising box for strawberry cultivation. The adjustable seedling raising box comprises a box body, a supporting rod capable of being rotatably adjusted is arranged in the box body, along with continuous growth of strawberry seedlings, the supporting rod is driven by a screw rod to expand outwards, so that the distance between adjacent seedling raising pots is increased to enlarge the growth space of the strawberry seedlings, meanwhile, the height of the seedling raising pots is continuously reduced to adapt to the growing strawberry seedlings, and the situation that normal growth of the strawberry seedlings is limited by the top of the box body is avoided. In the rotating process of the supporting rod, the seedling raising pots rotate in a self-adaptive mode relative to ring sleeves under the action of gravity, and therefore it is guaranteed that the seedling raising pots are kept in a vertical state all the time, and normal lighting of strawberry seedlings is met.

The invention provides a pruning method for peach trees. The method comprises the following steps: rapidly fixing trunks after the peach trees are colonized, and simultaneously removing all branches on the trunks, wherein the trunks are 50 to 60cm high; pruning peach tree seedlings twice in the first year, rapidly culturing the trunks to form peach tree plants of which the trunks play a dominant role, and forming 0.60 to 2.5m three-dimensional fruiting intervals under the assistance of corresponding fruiting branches to simplify the shapes of the trees into shapes formed by the trunks and the fruiting branches to rapidly achieve fruiting capability; pruning the trees in two rounds every year by removing the fruiting branches in every summer and removing large branches and thinning fruit branches in every winter to keep the shapes of the trees substantially unchanged and keep the fruiting capability of each peach tree substantially unchanged from the second year. According to the method, the shapes of the trees are simplified into the shapes formed by the trunks and the fruiting branches to rapidly achieve the fruiting capability, and meanwhile, planar fruiting branch layers of conventional tree shapes are replaced by three-dimensional fruiting branch layers to utilize the perpendicular space, so that the growth space of the fruiting layers is enlarged, and the coloring and fruit quality are improved.

The invention relates to a combined type seedling raising tray for a bowl-blanket rice seedling transplanting machine. The combined type seedling raising tray for the bowl-blanket rice seedling transplanting machine comprises a hard plastic seedling raising tray and a paper seedling tray, wherein the hard plastic seedling raising tray is a rectangular open box body formed by a tray bottom and a tray body; the tray body is uniformly equipped with retractable support lugs; the distances between the tray bottom and the retractable support lugs are equal; each retractable support lug comprises a support lug cap arranged at one end of a horizontal block and a clamping hook arranged at the other end of the horizontal block, the horizontal block is inserted into the tray body, the support lug cap is located outside the tray body, the clamping hook is located in the tray body, and the length of the horizontal block is larger than the thickness of the tray body; the paper seedling tray is a grid body formed by uniform arraying of paper slips and provided with open upper and lower sides, and is located on the retractable support lugs, and a bowl seedling root cavity is formed between the lower end surface of the paper seedling tray and the tray bottom of the hard plastic seedling raising tray. The paper seedling tray can be inserted into a field directly with bowl-blanket seedlings, the hard plastic seedling raising tray can be recycled, so that the production cost of rice seedling raising is reduced, and the combined type seedling raising tray is environment-friendly.

The invention relates to the technical field of agricultural planting, in particular to a pitaya planting system. According to the problems that an existing pitaya planting canopy frame is low in utilization rate, a drop irrigation system is high in automation degree and yield is low, a transverse supporting rope is added on the basis of an existing cement upright column foundation, and the utilization rate of plant growth space is increased. The water and fertilizer automatic drop irrigation technology is improved, a drop irrigation device is added and directly inserted in soil at the root of a plant, a water and fertilizer mixer is improved, and precise water and fertilizer application of fertilizer and pesticide is achieved along a water supply system. By means of the pitaya planting system in the technical scheme, unit planting density is increased, the yield is 2-4 times that of original single-row planting, and water and fertilizer consumption is reduced. Meanwhile, workloads of workers for fertilizer application and pesticide spraying are reduced, artificial planting cost is reduced, economic benefits are remarkable, and the system is suitable for large-scale popularization.

The invention discloses a factory-like circulating water mixed cultivation method of tiger giant grouper and oplegnathus punctatus, and belongs to the technical field of aquaculture. The method comprises the following steps: selecting tiger giant grouper with body weight of 30-40g, wherein the body weight of the oplegnathus punctatus is 1.5-2.0 times that of the tiger giant grouper, and adjusting the cultivation density of the tiger giant grouper to 80-120 per cubic meter, wherein the stocking density of the oplegnathus punctatus is 1 / 6-1 / 5 of that of the tiger giant grouper. The juvenile fishes of the tiger giant grouper and the oplegnathus punctatus are cultivated in a circulating water cultivation system in a mixed manner, the interspecific competition is weakened or avoided by adjusting the stocking size, stocking order, cultivation density ratio, management strategy and water quality condition of the two sweater fishes, the tiger giant grouper and the oplegnathus punctatus are cultivated in a mixed manner, and the unit water body cultivation efficiency is improved.

The invention relates to a three-dimensional co-culture induction method of mesenchymal stem cells, wherein the induction method comprises the following steps: respectively acquiring mesenchymal stem cells and a target cell source; covering the mesenchymal stem cells and a magnetic oxide in gel beads A; covering the target cell source in gel beads B; and co-culturing the mesenchymal stem cells in the gel beads A and the target cell source in the gel beads B by virtue of an inducer so that the mesenchymal stem cells are converted into target cells, and then isolating the gel beads A and the gel beads B in a magnetic field, wherein the magnetic oxide particles are 1-100nm in diameter. The induction method disclosed by the invention not only can achieve a purpose of simplifying the isolation of co-cultured cells, but also can expand a growth space of the mesenchymal stem cells as well as substance signal exchange between a culture solution and the cells, promote the growth and the differentiation of the mesenchymal stem cells, improve a transformation rate and enhance cell activity by virtue of the three-dimensional spatial structure of an alginic acid gel body.

The invention discloses a peach planting method and relates to the technical field of fruit tree planting. The peach planting method is used for solving the problems, i.e., high disease rate, low fruit sugar content, large fruit quality difference and low yield per mu of the existing peach planting methods. The method comprises the steps: (1) soil amendment: performing green manuring, soil deep-plowing and high-compartment wide-furrow digging; (2) nursery-grown plant field planting: selecting healthy young seedlings, performing antibacterial treatment, and then, performing dibbling; (3) fertilization management: performing basal fertilizer application once, topdressing thrice and irrigation; (4) pruning reshaping: adopting Y-shaped planting for peaches; and (5) disease and insect pest control: performing garden cleaning in winter, pruning to clear out diseased branches and leaves, and performing warm keeping and control. Compared with the prior art, the method has the advantages that by adopting dwarf close planting and Y-shaped pruning reshaping, the quantity of planting of peaches per mu and the lighting property and uniformity of upper and lower branches are improved, and thus,the sugar content of peach fruits of all positions is improved; and meanwhile, the lighting of each position of the peaches is consistent, thus, the saccharide accumulation and nutrition level of thefruits are equivalent, the workload of fruit grading can be reduced, and the labor cost is reduced.

The invention discloses bone regeneration guiding collagen membrane for dental use and a preparation method thereof, and belongs to the technical field of regenerative medical materials. The preparation method of the bone regeneration guiding collagen membrane for dental use comprises the following steps: S1, preparing a raw material and carrying out pretreatment, including: S1-1, dissolving type-I collagen in an acidic solvent and carrying out homogenization so as to obtain collagen slurry, S1-2, filtering the collagen slurry, and S1-3, performing negative-pressure pumping on the collagen slurry filtered in S1-2 until no obvious bubbles exist; S2, carrying out freeze-drying, namely freeze-drying the collagen slurry prepared in S1 so as to obtain collagen sponge; S3, pressing the collagensponge into a thin piece, namely pressing the collagen sponge into a thin piece under a pressure of 1-5 MPa; and S4, performing severe dehydration and cross-linking on the thin piece in vacuum so as to obtain the bone regeneration guiding collagen membrane for dental use, and carrying out sterilizing and storing. The bone regeneration guiding collagen membrane for dental use disclosed by the invention can be used to stop bleeding and guide bone regeneration after dental implantation, and has the advantages of being low in immunogenicity, excellent in biocompatibility and capable of effectivelypromoting bone regeneration. Moreover, the preparation method of the bone regeneration guiding collagen membrane for dental use has the advantages of being efficient and easy in operation, non-toxicand harmless.