111results about How to "Meet growth needs" patented technology

The invention discloses a precise fertilization method, system and device for a rice transplanter, and relates to the technical field of rice cultivation. Comprising the following steps: dividing a to-be-fertilized field into a plurality of sub-regions, analyzing the concentrations of nitrogen, phosphorus, potassium and organic matters, and taking an average value as the nutrient content of the field; the soil compactness is analyzed, and the nutrient penetration depth index is calculated in combination with environmental parameters such as soil temperature and humidity mean values; acquiring field salinity and alkalinity data, and calculating a soil nutrient effectiveness index in combination with the environmental parameters; correcting the fertilization longitudinal spacing and the fertilization depth according to the nutrient effectiveness index and the penetration depth index to obtain an accurate value; finally, the rice precise fertilization operation is completed through a rice transplanter according to the precise fertilization depth and the longitudinal distance. According to the method, soil nutrients and environmental parameters are dynamically combined, the fertilization precision is optimized, and the fertilizer utilization efficiency is improved.

The invention belongs to the field of farmland irrigation, and particularly relates to a high-standard farmland water conservancy irrigation system which comprises a water supply pipe, the outer side of the water supply pipe fixedly communicates with a connecting pipe, a water spraying pipe is movably arranged on the inner side of the connecting pipe, the outer side of the water spraying pipe is attached to the inner wall of the connecting pipe, and turbine blades are fixedly arranged at the lower end of the inner side of the water spraying pipe. A plurality of annular openings distributed in a linear array mode are formed in the outer side of the water spraying pipe, a plurality of spray heads distributed in a circumferential array mode are arranged in the annular openings, the spray heads communicate with the water spraying pipe, and a connecting ring is arranged in the water supply pipe. In the farmland irrigation process, the farmland and crops can be conveniently irrigated by adjusting the use position of the spray head, meanwhile, the spraying range of the farmland can be flexibly adjusted according to the growth condition of the crops, nutrient agents can be sprayed to the crops in the irrigation process, and the irrigation efficiency is improved. The farmland irrigation effect is ensured, and meanwhile, the growth requirements of crops are met.

The invention relates to the technical field of agricultural machinery, and specifically to a wheat double-axis rotary tillage sowing and fertilizing integrated machine, comprising a storage box, wherein the storage box comprises a box body, and a partition is fixedly installed on the inner side wall of the box body, the partition divides the internal space of the box body into a fertilizer bin and a seed bin, and a bracket is fixedly installed on the bottom end of the box body; through the reciprocating trajectory movement of the bottom plate inside the U-shaped frame, in conjunction with a highly staggered feeding pipe, the fertilizer inside the fertilizer bin and the seed bin and the wheat seeds are fertilized and sown in a deep and shallow manner, thereby improving the fertilizer and reducing the nutrient loss caused by water evaporation or leaching, the deeply buried fertilizer can better maintain moisture in a deeper soil layer, reduce nutrient loss, and wheat seeds at different depths will have different growth rates in the early growth stage, which is helpful to form a more uniform crop group, reduce resource competition caused by excessive density, and thus improve soil utilization and crop yield.

The invention provides an algae attachment bed for marine ecological restoration, and relates to marine ecological restoration, the algae attachment bed comprises a buffer shell, a first supporting frame and a second supporting frame are arranged on the two sides of the interior of the buffer shell in parallel, and an aeration structure is jointly connected between the first supporting frame and the second supporting frame; attachment structures connected with the first supporting frame and the second supporting frame are distributed on the outer side of the aeration structure, a linkage structure connected with the buffer shell is arranged on the surfaces of the multiple attachment structures jointly, and a driving structure fixed to the side wall of the buffer shell is installed on one side of the first supporting frame. Under the action of the driving structure, the first supporting frame and the second supporting frame can rotate synchronously. Through the linkage structure and the driving structure, the multiple attachment structures can rotate at a constant speed along with driving of the driving structure, so that the attachment structures at different positions can alternately rotate at the notch position to further make full contact with sunlight.

The present invention relates to the field of agricultural technology, and is a fertilization method and device based on returning corn straw to the field, comprising: receiving planting data sent by corn straw returning growers, obtaining multiple historical soil samples based on the straw returning area, detecting the multiple historical soil samples using a pre-constructed soil data detection method to obtain historical soil data, obtaining target soil data based on target crops, calculating the amount of straw per unit area according to the planting data, extracting a straw decomposition curve set from a pre-constructed database based on the amount of straw per unit area and the type of corn, obtaining unit mixed fertilizer amount data using the straw decomposition curve set, performing a fertilization operation on the straw returning area based on the unit mixed fertilizer amount data, and completing fertilization based on returning corn straw to the field. The present invention can achieve that after the initial addition of fertilizer when returning corn straw to the field, the soil corresponding to the target planting time can meet the growth requirements of the target crop.

The utility model relates to the field of landscape greening wall equipment, in particular to a municipal landscape greening wall which comprises a fixing base, a greening wall body, a planting pot, a watering assembly and a shielding assembly. The greening wall body is arranged on the fixed seat; the multiple sets of planting pots are arranged on the two sides of the greening wall body side by side; the watering assembly is arranged on the greening wall body and located above the planting pots, and the watering assembly comprises a connecting plate; a plurality of groups of connecting plates are arranged, and the plurality of groups of connecting plates are slidably arranged on the greening wall body; the shielding assembly is arranged on the greening wall body and used for shielding the planting pots. The sprayer with the adjustable height can provide personalized water supply for each plant, and the growth requirements of the plants are met; the baffles can effectively reduce direct sunlight irradiation on plant leaves, and the plants are protected from being damaged.

The invention provides a water quality purification device and method suitable for urban garden landscape irrigation, the water quality purification device comprises an ion exchange system, the ion exchange system comprises an ion exchange tank, and irrigation water to be purified stays in the ion exchange tank according to a set staying time; the strong-acid polymeric filler is arranged in the ion exchange tank, and a strong-acid reaction group of the strong-acid polymeric filler can be subjected to ion exchange reaction with salt ions in the irrigation water, so that the removal rate of the salt ions in the irrigation water is changed along with the set retention time; the removal rate of salt ions in the irrigation water can be manually controlled, so that the salt content in the irrigation water can provide trace essential nutrient elements for plants, and the growth of the plants is promoted to a certain extent, so that the purposes of maintaining the soil health and the normal growth of the plants are achieved.

The invention discloses a method for culturing seawater rotifers by using prawn shell leavening, which comprises the following steps: S1, cleaning prawn shells to obtain a fermentation substrate; s2, dynamically optimizing fermentation conditions by adopting a multi-agent collaborative reinforcement learning algorithm; s3, predicting the optimal completion time of fermentation by adopting a mixed graph convolutional neural network and an adaptive genetic algorithm, and providing dilution suggestions through a spectral analysis technology; s4, dynamically calculating the dilution ratio, and mixing the fermentation liquor with seawater; s5, pouring the diluent into a rotifer culture pond, predicting the health state of the rotifer by adopting a Vision Transform model, and automatically adjusting a nutrition formula or environmental conditions; s6, monitoring the density of the rotifers in real time through a YOLOv5 target detection model and a camera, and keeping the rotifers within a preset density range; and S7, performing intelligent management on waste treatment based on a multi-objective evolutionary algorithm of non-dominated sorting. According to the method, a multi-agent collaborative algorithm and a deep learning technology are adopted, and intelligent culture of seawater rotifers and optimized treatment of wastes are realized.

The invention relates to the field of fertilizers, in particular to a bioactive fertilizer capable of improving soil and a preparation method thereof. Compared with a conventional starch coating layer, starch is modified in the coating layer, the stability and the slow release effect of the coating layer are improved, meanwhile, a certain amount of nitrogen phosphorus potassium salt is added, and nutrients needed by plants in the early stage can be provided. The prepared fertilizer is moderate in slow-release effect, the slow-release days reach about 4 months, the fertilizer can adapt to plant growth, and the growth requirements of plants are fully met.

The invention provides a feed for increasing the content of fat in mutton muscle, a method and application of the feed, and belongs to the technical field of animal breeding. The feed comprises the following components in parts by mass: 50-85 parts of concentrated feed and 15-50 parts of coarse feed, the concentrated feed comprises 65-75 parts of an energy feed, 20-30 parts of a protein feed, 4.0-5.0 parts of a premix and 0-1.0 part of a nutrition additive. According to the invention, intramuscular fat deposition can be promoted, intramuscular fat content can be increased, and marbling or snow-like patterns can be formed, so that the purposes of improving mutton quality and producing high-quality and high-grade mutton can be achieved.

A plant carbon sink real-time monitoring experiment device comprises a plurality of culture boxes which are arranged in an arrayed mode, the inner space of each culture box is divided into an outer culture container and an inner culture container which are mutually independent, the inner culture containers are arranged on the lower portions in the outer culture containers, and sealed spaces are reserved on the upper portions in the outer culture containers. The outer culture container is communicated with an outer air inlet pipe, an outer air outlet pipe and an outer water conveying pipe, an adjustable LED light source for providing illumination is arranged on the outer culture container, the adjustable LED light source is connected with a voltage-adjustable power supply, and a gas concentration detection device and a temperature and humidity detection device are arranged in the outer culture container; the inner cultivation container is communicated with an inner air inlet pipe, an inner air outlet pipe and an inner water conveying pipe; the inner cultivation container comprises a lower container body and an upper container body which are vertically sealed, the lower container body is of a barrel body structure with an opening in the top, and the upper container body comprises a bottom wrapping opening matched with the edge of the opening in the top of the lower container body in a sealing mode, an elastic connecting part with a cavity formed in the middle and an elastic wrapping opening located at the top end.

The invention discloses a chrysanthemum production quality prediction system and method. The system comprises a data monitoring module, a quality prediction module, an optimization module, an intelligent control module and an irrigation, illumination, temperature control, nutrition supply and carbon dioxide supply system. The data monitoring module collects production parameters in real time and transmits the production parameters to the quality prediction module, and the quality prediction module carries out quality prediction on the current production parameters through a data model. And the prediction result is transmitted to the optimization module, and control data is generated by the optimization module. And control data is transmitted to each environment regulation and control system through the intelligent control module, so that the growth environment of the chrysanthemum is intelligently regulated, and the quality is optimized. The whole structure is simple, and automatic management and quality optimization in the chrysanthemum growth process are achieved by introducing the real-time data monitoring module, the quality prediction module and the intelligent control module into the prediction system.

The invention discloses an aminobutyric acid synergistic fertilizer and a preparation method thereof, and belongs to the technical field of fertilizers. The synergistic fertilizer comprises the following raw materials in parts by weight: 80-90 parts of fertilizer effect particles and 20-40 parts of a coating solution. The coating solution is prepared by the following steps: adding modified chitosan into an acetic acid solution with the volume concentration of 1%, and uniformly stirring at 300-500r / min to obtain the coating solution, and a preparation method of the modified chitosan comprises the following steps: adding chitosan into a citric acid solution, stirring until the chitosan is dissolved, then adding epoxy chloropropane, stirring at 400r / min for 4 hours, then adding humic acid, and stirring for 0.5 hour to obtain a mixed solution; dropwise adding the mixed solution into a 0.2 mol / L NaOH solution, stirring for 12 hours, eluting residual NaOH in a product with distilled water, drying at 80 DEG C for 12 hours, taking out, and grinding into powder, so as to obtain the modified chitosan. The aminobutyric acid synergistic fertilizer prepared by the invention has excellent slow release performance.

The utility model relates to the technical field of cistanche deserticola fermentation, and discloses a cistanche deserticola beverage constant-temperature fermentation device which is characterized in that a sealing cover for sealing is fixedly mounted at the upper end of a heat preservation shell, a liquid inlet pipe for entering is fixedly mounted at the side end of the upper half part of the heat preservation shell, and a liquid discharge pipe for discharging is fixedly mounted at the side end of the lower half part of the heat preservation shell; the motor drives the driving wheel and the driven wheel to rotate, effective stirring of the stirring blades in the fermentation bin is achieved, uniform mixing of liquid is guaranteed, the fermentation efficiency is improved, the driven wheel rotates with the driving wheel as the circle center, meanwhile, the sliding block moves in the sliding groove, the stirring uniformity is enhanced, the stability and durability of the stirring assembly are guaranteed, and the stirring efficiency is improved. External sterile gas enters the interior of the central shaft through the gas pipe and is sprayed outwards from the ventilation opening to enter the fermentation bin, necessary oxygen is provided for the fermentation process, airflow disturbance is generated, the stirring effect is further enhanced, and uniform mixing of liquid and full contact of microorganisms are promoted.

The invention relates to the field of garden irrigation, and particularly discloses a garden intelligent monitoring irrigation system for environmental remediation, comprising: an environmental parameter and plant health index monitoring module for monitoring environmental parameters of each plant in a garden in real time, including soil humidity, illumination intensity and temperature, and plant health indexes of each plant, comprise growth conditions and leaf colors, and calculating to obtain a comprehensive index Fi (t) of each plant at any moment t; by means of the multiple modules integrated in the system, efficient and accurate irrigation management is achieved, the pertinence and effectiveness of irrigation are remarkably improved, the real-time monitoring function of the environment parameter and plant health index monitoring module enables the system to accurately capture the growth requirements and environment changes of plants, and the system is convenient to use. Scientific basis is provided for formulating an irrigation strategy, the personalized irrigation strategy not only meets the growth requirements of plants, but also avoids unnecessary irrigation waste, and the utilization efficiency of water resources is improved.

The invention discloses a component optimization method for preparing a liquid fertilizer from acetylisovaleryltylosin tartrate waste liquid, and relates to the technical field of fertilizer preparation, and the component optimization method comprises the following specific steps: step 1, selecting nanoscale activated carbon with the specific surface area of 1000m < 2 > / g-1500m < 2 > / g as a base material, the method has the advantages that a microbial flora system is constructed by screening out pseudomonas bacteria, actinomycetes and bacillus, and the pseudomonas bacteria can effectively decompose complex organic pollutants in the waste liquid by virtue of the mineralization effect of the pseudomonas bacteria and gradually convert the complex organic pollutants into carbon dioxide, water and simple organic acid, so that the primary purification of the waste liquid is realized; actinomycetes can utilize secreted enzymes to convert acetylisovaleryltylosin tartrate into small molecule compounds containing nitrogen, phosphorus, potassium and other nutrient elements, bacillus further promotes synthesis and stability of the nutrient small molecules, it is ensured that the liquid fertilizer is comprehensive in nutrient and accurate in content, the plant growth requirement can be better met, and the liquid fertilizer has a good application prospect. The resource utilization rate of the acetylisovaleryltylosin tartrate waste liquid is greatly improved.

The invention discloses fertilizer preparation of methionine fermentation waste liquid and application of the fertilizer preparation, and relates to the technical field of fertilizer preparation, and the fertilizer preparation comprises pretreatment of the methionine fermentation waste liquid, ion exchange treatment, enzyme catalytic conversion, microbial enhancement and nutritional ingredient blending. The efficient nitrogen-solubilizing bacteria have a unique nitrogen metabolism pathway and can more efficiently convert nitrogen-containing compounds in waste liquid into a nitrogen source capable of being absorbed by plants, the novel phosphate-solubilizing bacteria enhance the decomposition capacity of the novel phosphate-solubilizing bacteria on complex phosphorus compounds through gene editing, and the photosynthetic growth-promoting bacteria are subjected to special domestication, so that the photosynthetic growth-promoting bacteria have a good application prospect. Metabolite products beneficial to plant growth can be generated by utilizing light energy under wider environmental conditions, the methionine fermentation waste liquid is filtered by using three groups of filter screens, large-particle impurities, suspended solids, colloids, part of microorganisms and the like in the waste liquid can be effectively removed, and the prepared clean methionine fermentation liquid is low in impurity content.

The utility model discloses a growth type multifunctional baby crib, relates to the technical field of baby cribs, and aims to solve the technical problems that the structure of the current baby crib is inconvenient to efficiently adjust to cope with the space and the use scene, and the current baby crib is inconvenient to adapt to the demand change in the growth process from a baby to a child, so that the product is easy to be idle and is eliminated too early. Comprising a fence module, a bed frame module arranged in the fence module and a bed body module arranged on the bed frame module, the fence module comprises a shielding fence, the bed frame module comprises a bearing bed frame and a telescopic hinge sliding rail shade, and the telescopic hinge sliding rail shade comprises a fixed part and a telescopic part. The bed body module comprises a movable bed board, a fixed bed board, an expansion bed board and a hinge sliding rail. The baby crib has the advantages that the length and the height of the baby crib can be adjusted, the baby crib can continuously change along with the growth of a baby, the growth requirement of the baby from birth to school age is met, and higher economical efficiency and practicability are provided for family users.

The application discloses a cold region pig house winter stratified energy-saving ventilation method and relates to the technical field of livestock breeding. In order to solve the ventilation problem of the prior art cold region pig house, the method comprises the following steps: according to the pig house space and pig growth stage, a ventilation system is laid out; real-time monitoring of pig house internal environment parameters is taken as a basis; a CFD simulation is used to optimize the air flow path, and then the operation parameters of the ventilation system are regulated; and according to the heat loss in the pig house, the operation of the ventilation system is assisted and optimized. The application provides a dynamic adjustable air supply mechanism based on the breathing height of pigs, through pig house top layer heat recovery and pig house internal air flow stratified interval ventilation, the heat energy loss is effectively reduced, more than 80% of fresh air is accurately delivered to the pig breathing area, invalid ventilation is avoided, the energy saving rate is more than 50%, the energy consumption is reduced, the air quality in the breathing area reaches more than 99% of the standard rate, and the growth environment and health level of the pigs are improved.

The present invention discloses a fish seedling cultivation device which is convenient for water changing and cleaning in the technical field of fish seedling cultivation, comprising: a driving mechanism, which is arranged at the bottom of the outer box component; a cleaning mechanism, which is arranged in the inner cavity of the inner box component and connected to the driving mechanism, the cleaning mechanism is in contact with the filter screen, and the driving mechanism drives the cleaning mechanism to rotate to clean the inner cavity of the inner box component and the filter screen. The fish seedling cultivation device which is convenient for water changing and cleaning can change water and clean the inside of the inner box component by driving the cleaning mechanism to rotate, and can perform water changing and cleaning during fish seedling cultivation and breeding, without the need to transfer the fish seedlings, thereby reducing the labor intensity of the breeding personnel and conveniently and quickly performing water changing and cleaning, thereby improving work efficiency.

The utility model belongs to the seedling planting technical field, especially for a kind of drought-resistant water-collecting water-retaining device for seedling planting, including liquid storage cylinder, the upper surface of liquid storage cylinder is open structure, the lower side wall of liquid storage cylinder is fixedly installed with round sleeve, and the upper and lower side of round sleeve are all open structure, the lower side wall of liquid storage cylinder is evenly provided with liquid distribution mechanism along round sleeve, the inner wall of liquid storage cylinder and the outer surface of round sleeve are fixedly installed with baffle, liquid-collecting mechanism is arranged on the baffle near left and right positions, and the left and right side walls of baffle are fixedly installed with limiting mechanism on the upper side of baffle;The utility model is collected and preserved to water by liquid storage cylinder, reduces soil moisture loss at seedling, and the root system of seedling is drip irrigation by liquid distribution mechanism, ensures that water can meet the growth demand of seedling, increases the limiting function to seedling simultaneously, so that seedling is not easy to dump, improves the survival rate of seedling.

The application relates to a water and fertilizer integrated system for traditional Chinese medicinal material planting, which comprises a frame body, a water and fertilizer tank and a pesticide tank which are sequentially arranged on the frame body, and a stirrer arranged in the water and fertilizer tank and the pesticide tank; two oppositely arranged supporting frames, a conveying pipeline arranged on one side of the supporting frame, a spraying unit arranged at the upper part between the conveying pipeline and the other supporting frame, and a drip irrigation unit arranged at the lower part; and a supply part arranged at the bottom of the water and fertilizer tank and the pesticide tank. The water and fertilizer integrated system can integrate the irrigation, fertilization and pesticide application functions, can complete various operations in the traditional Chinese medicinal material planting process, and reduces the equipment purchase cost. The water and fertilizer and the pesticide are uniformly covered on the top leaves through the spraying unit; and the water and fertilizer is delivered to the soil at the crop roots through the drip irrigation unit, so that a local wet environment is formed.

The application relates to the technical field of soil improvement, and discloses a grape planting soil improvement agent, which is prepared from the following components in parts by weight: 50-80 parts of attapulgite, 30-40 parts of calcium-based bentonite, 10-15 parts of molasses, 5-8 parts of N-dodecyl ethanolamine, 10-15 parts of polybutene diacid, 10-15 parts of polyacrylate, and 50-80 parts of water. The grape planting soil improvement agent has the advantages that the salt resistance of the polyacrylate is good, the water retention of the mineral is good, and the action time of the microbial agent is long.

The invention relates to the technical field of microorganisms, in particular to a fish streptococcicosis-resistant feed additive and application thereof.The strain D7-HSJ9 applied to the additive is obtained by screening of an applicant, it is detected that the strain has good salt resistance, alkali resistance and antibacterial characteristics, especially has a good antibacterial effect on streptococcus, and after processing, the strain can be used for preparing a feed additive for fish streptococcicosis. The feed additive prepared by compounding the strain and traditional Chinese medicines can well inhibit the growth of streptococcus iniae and streptococcus agalactiae, the additive is used for preparing disease-resistant feed, and the additive has the remarkable advantages of being scientific in component compatibility, obvious in synergistic effect, capable of meeting the growth requirement of fish, capable of remarkably promoting the growth of the fish, capable of improving the feed utilization rate and capable of reducing the feed conversion ratio. In addition, the disease-resistant feed also has the effects of effectively improving the immunity of the fish and reducing the morbidity of the fish, and is a biological feed additive and a biological feed which are low in cost and safe in color.

The invention discloses a method for restoring plant productivity in a semi-arid region, relates to the technical field of ecological restoration, and aims to solve the problem of poor plant productivity restoration effect caused by uneven rainfall in the existing semi-arid region. The method comprises the following steps: 1, selecting a vegetation degradation land in a semi-arid region as a target recovery sample land, and investigating vegetation; 2, dividing the target restoration sample plot into a plurality of independent restoration units, and digging potential pools in the independent restoration units to form concave terrains; 3, by taking a vegetation survey result as a reference, dividing the vegetation into a xerophyte vegetation zone, a hygrophyte vegetation zone and an emergent vegetation zone from top to bottom according to the gradient in an equal-width manner, and carrying out vegetation configuration; 4, transplanting dominant vegetation, and supplying a water source according to the suitable growth water level of the configured plants. According to the method, micro-landform transformation and vegetation configuration are fused, a composite habitat is created through micro-landform transformation, the growth requirements of different plants are met, breeding can be conducted through seeds and rhizomes after the plants are colonized, and the micro-landform transformation is beneficial to seed interception, seed bank compensation and plant productivity recovery.

A low-heating light source control method and system suitable for plant growth relates to the field of light control, and the method comprises the following steps: collecting current environment data in a target environment, plant type data and thermal distribution data of a target plant, and analyzing the growth demand of the plant through a plant growth cycle model to obtain a plant growth cycle model; heat demands and illumination demands of the target plant in different growth stages are obtained, demand data and environmental thermal distribution are considered, an optimal position distribution scheme of a heating light source is determined by adopting a simulation calculation method, and distance data between the heating light source and the target plant are obtained; the position relation between the light sources and the plants is determined in a three-dimensional space coordinate system, the optimal irradiation angle of each light source can be calculated according to the relative positions of the light sources and the plants, finally, accurate angle control is conducted on the heating light sources, the preset optimal irradiation angle is achieved, appropriate illumination and heat are provided for the plants, and therefore the plant quality is improved. Therefore, the plant growth effect is prevented from being influenced.

The utility model relates to the technical field of fertilizer preparation, and discloses an intelligent biomass fertilizer fermentation machine which comprises a fermentation box, a rotating rod is movably installed in the fermentation box, a first gear is movably installed at the bottom of the fermentation box, and a connecting shaft is fixedly installed between the first gear and the rotating rod. A second gear is installed on the side face of the first gear in an engaged mode, and a first motor is fixedly installed at the bottom of the second gear. According to the utility model, residual raw materials on the inner wall of the fermentation box can be scraped by using the scrapers, so that the purity and the high efficiency of the fermentation process are ensured, the raw materials are prevented from being polluted in the fermentation process, the fermentation effect and the product quality are prevented from being influenced, and the raw materials can be prevented from being accumulated on the box wall by timely removing the residual raw materials. And the resistance in the fermentation process is reduced, so that materials can better flow and be mixed in the fermentation box, the fermentation speed and the product quality can be improved, and meanwhile, the energy consumption and the production cost are reduced.

The invention relates to the technical field of dalbergia odorifera germplasm preservation equipment, in particular to a dalbergia odorifera germplasm preservation device and method. According to the technical scheme, the device comprises a water storage tank and further comprises bottom rods movably installed at the two ends of the water storage tank, and the top ends of the bottom rods are movably connected with a top frame. Through the structural design of the bottom rod, the top frame, the clamping block mechanism and the pinching mechanism, the water planting box can be adjusted according to the height of seedlings to meet the growth requirements of different seedlings, and therefore the space use efficiency can be improved. For nursery stocks with large growth difference, flexible adjustment not only is favorable for meeting the requirements of different plants, but also can avoid space waste, and further provides the most suitable growth space for each plant. Meanwhile, according to different plant specifications, the height or length of the dalbergia odorifera germplasm preservation device can be transversely or vertically increased to optimize the space layout, and the available space is reasonably utilized.