9416 results about "Seedling" patented technology

The invention relates to the technical field of phytotron control systems, in particular to a seed seedling phytotron control system and a control method thereof, which integrate multi-dimensional environment perception, intelligent analysis and decision, precise environment regulation and control, a central controller and a data storage and analysis platform. A seedling raising environment is monitored in real time through temperature and humidity, illumination, CO2 concentration, soil moisture and an image sensor, an intelligent analysis decision module preprocesses data, establishes a growth model, generates a control strategy and optimizes a target by using an advanced algorithm, and an accurate environment regulation and control module executes the strategy and regulates temperature, humidity, illumination and the like. The central controller coordinates operation of the modules and realizes man-machine interaction, and the data storage and analysis platform is responsible for storing data and supporting cloud analysis so as to realize efficient seedling culture management and significantly improve the seed emergence rate from 75% of a traditional method to 92%, and greatly reduce seed waste.

The invention discloses an unmanned automatic seedling taking transplanter and an intelligent control method, belongs to the technical field of intelligent agricultural machinery, and aims at solving the problems that an existing transplanter seedling taking device is low in intelligent and automatic degree and tedious in operation. Comprising a successive seedling supply mechanism, a seedling skin dumping mechanism and a seedling tray recovery mechanism. Seedling trays are loaded on each seedling tray storage bin, a plurality of seedling skins are arranged on the seedling trays, the successive seedling supply mechanism is responsible for successively placing each layer of seedling trays on the two translation guide rails, the translation mechanism is responsible for pushing the seedling trays on the translation guide rails to the turning plate frame, and the seedling skin dumping mechanism is responsible for dumping the plurality of seedling skins on the seedling trays to a seedling box. According to the unmanned automatic seedling taking machine, the complete process of unmanned automatic seedling taking can be achieved, the weight of the whole machine is light, loads borne by all the mechanisms are small, operation is stable and reliable, and the automation degree and the intelligent degree are high.

The invention relates to the technical field of pattern recognition, in particular to an ecological restoration nursery stock quality detection system based on pattern recognition, which comprises an image acquisition module for controlling camera equipment to acquire nursery stock images under target time and illumination conditions to obtain an original image set; and performing format unification and cleaning on the original image set, removing image noise and irrelevant information, and generating a cleaned image set. According to the method, the image pickup equipment is controlled to obtain the original nursery stock image under the target time and illumination condition, the consistency and stability of image data are improved, after unified format and information cleaning are carried out on the original image, image noise and invalid information are eliminated, and the nursery stock feature extraction precision is improved. Based on multi-dimensional feature extraction of colors, textures and shapes and comparative analysis of known quality standards, accurate judgment of seedling growth quality is realized, and scientificity and reliability of seedling screening are improved.

The invention relates to the technical field of fertilization and watering control, in particular to an automatic fertilization and watering control method and system for landscape garden seedlings. The method comprises the following steps: acquiring and analyzing morphological data and soil state characteristics of landscape garden seedlings through an electronic monitoring and soil monitoring sensor; then, the nursery stock root system density is predicted through the nursery stock form data, abnormal fluctuation of the soil salt content is monitored, and the root system absorption limitation condition is estimated; then, according to root system absorption limited data and soil salt content abnormal fluctuation, the dosage of a slow release fertilizer is matched, and sectional type drip irrigation proportion fusion is carried out; and finally, constructing a fertilization and watering control model based on a strategy gradient algorithm, and implementing automatic fertilization and watering control through a terminal. The fertilization and watering control technology is optimized, so that the fertilization and watering control technology is more perfect.

The invention discloses multi-layer response type ecological seed paper and a preparation method thereof. According to the invention, the microencapsulated seed adopts a sodium alginate and chitosan double-layer coating process, and the pH response characteristic is combined, so that the problem of seed damage caused by high temperature or mechanical pressure in the traditional seed paper processing process is effectively solved. The sodium alginate gel layer forms a physical barrier through ionic crosslinking, so that direct impact of a processing environment on the seeds is isolated; the pH sensitivity of the chitosan coating ensures that the seeds are only released under the soil neutral condition, and poison of acidic or alkaline environment to seedlings is avoided. When the soil moisture content exceeds a threshold value, the hydrogel grid structure is rapidly expanded and disintegrated, and the slow-release fertilizer and the nitrogen-fixing flora are synchronously released. According to the dual intelligent response system, the survival rate of the seeds is increased, accurate space-time matching of nutrient release and seed germination is achieved, and in a mine remediation scene, heavy metal adsorption and soil microbial community reconstruction can be completed at the same time by adjusting the aperture of the hydrogel and the variety of probiotics.

Present invention teaches the method of using a keratin hydrolysis peptide (“KHP”) solution to improve the growth of corn under low temperature conditions. By selectively choosing specific weights of feathers and water, and treating the mixture to a high-temperature high-pressure hydrolysis process, the resulting solution is confirmed to contain at least 253 peptides and then infused to the soil containing the corn seeds, the solution can also be sprayed to the leaf surface of corn plants at a specific growth stage. Optionally, the KHP solution can be diluted by water, as disclosed in the specification, for applying to the soil and for spraying to leaf surface of corn seedlings / plants.

The invention discloses a method for efficiently screening saline-alkaline tolerant rice. According to the method, controllable indoor saline-alkali environment simulation conditions are constructed, various salts are mixed in proportion to prepare solutions with different salinity gradients, the pH value is adjusted, and temperature, humidity and illumination parameters are accurately controlled; the method comprises the following steps: disinfecting rice seeds, carrying out a germination test, transplanting rice seedlings, and regularly measuring growth indexes; in the treatment process, physiological indexes such as malondialdehyde content, antioxidant enzyme activity, proline content and the like and the expression level of salt and alkali tolerance related genes are detected, key indexes are screened by applying statistics and multivariate analysis methods, and an evaluation system is established for comprehensive score screening. The method can quickly perform saline-alkali stress treatment on a large number of rice seeds or seedlings, is not limited by natural environment, shortens the screening period, can accurately simulate different saline-alkali soil environments, scientifically evaluates the saline-alkali tolerance of rice from multiple dimensions, and provides an efficient and reliable technical means for breeding saline-alkali tolerant rice varieties.

The invention discloses a plant seed seedling raising light environment optimization system and method based on an LED light source, and belongs to the technical field of seed seedling raising. The invention discloses a plant seed seedling culture light environment optimization system and method based on an LED light source. The system comprises a light environment monitoring unit, a light environment optimization unit and a cooperative regulation and control unit. The problem of limitation in the prior art is solved, the light environment monitoring unit monitors light environment parameters of seedling raising in real time, data support is provided for follow-up light environment optimization, the light environment optimization unit conducts analysis according to light environment data provided by the light environment monitoring unit, and the light environment monitoring unit monitors the light environment parameters of seedling raising in real time. The light environment parameters of plant seed seedling raising are dynamically adjusted, it is ensured that plants obtain the optimal growth condition, the cooperative regulation and control unit analyzes the interaction relation between the light intensity, the light quality, the illumination duration and the temperature and humidity by combining light environment data, and therefore cooperative regulation and control over the light environment and the environment parameters are achieved. And more ideal environmental conditions are created for plant growth.

The invention belongs to the technical field of microorganisms, and provides a growth-promoting P.adami M6 and application thereof, the P.adami M6 is preserved in the China Center for Type Culture Collection, the preservation number is CCTCC No: M20242835, the preservation date is December 18, 2024, the preservation number is CCTCC No: M20242835, the preservation number is CCTCC No: M20242835, the preservation number is CCTCC No: M20242835, and the preservation number is CCTCC No: M20242835. The strain is separated from rhizosphere soil of field planting foxtail millet in the Inner Mongolia red peak area, and is obtained through artificial separation and purification; the strain has the growth promoting characteristics of nitrogen fixation, phosphorus dissolution, IAA production and siderophore production; the M6 fungicide is used for inoculating millet, so that the growth of millet seedlings can be obviously promoted, and the plant height, the root length and the overground part and underground part biomass of the millet are obviously increased; m6 is used as a microbial agent to soak seeds during sowing and irrigate a bacterial liquid once 7 days after sowing, so that the growth effect of millet is best.

The invention discloses a comprehensive evaluation method for drought resistance of white birch germplasm resources in the seedling stage, and belongs to the technical field of drought resistance evaluation. Under different gradient drought stress and normal conditions, 14 drought resistance indexes of 90 white birch half-sib families are measured, and the drought resistance is comprehensively evaluated by combining membership function analysis, principal component analysis and clustering analysis. A comprehensive drought resistance evaluation value (D value) is obtained according to a membership function, comprehensive clustering analysis is carried out according to the D value of each family, 90 families are divided into four categories at the Euclidean distance of 1.5, and BWY32 and BWY29 are screened out as drought-resistant families. A stepwise linear regression analysis method is utilized to respectively establish linear regression equations under drought stress 5d and 10d, and four important drought resistance indexes are screened out. Compared with the previous research, the method fully considers the difference of the sensitivity degree of each selected index to drought stress and the contribution rate of each index to drought resistance evaluation, and lays a good foundation for simplification and high efficiency of the drought resistance evaluation of the white birch.

Present invention teaches the method of using a keratin hydrolysis peptide (“KHP”) solution to reduce the suppression of corn growth due to waterlogging stress. By selectively choosing specific weights of feathers and water, and treating the mixture to a high-temperature high-pressure hydrolysis process, the resulting solution is confirmed to contain at least 253 peptides and then infused to the soil containing the corn seeds or seedlings; the solution can also be sprayed to the leaf surface of corn seedlings at a growth period of the corn seedlings. Optionally, the KHP solution can be diluted by water, as disclosed in the specification, for applying to the soil or for spraying to leaf surface of corn seedlings.

A method of creating a wetland in a hot, arid, location includes identifying or establishing a channel of flowing water at the arid location, and installing therein a mat containing seeds, and / or seedlings, and a super absorbent polymer (SAP). Water from the channel is applied to hydrate the SAP, and both edible and dam-constructing vegetation is allowed to grow and mature from the seeds and / or seedlings. Beavers are then introduced into the arid location, which eat the edible vegetation and use the dam-constructing vegetation to construct at least one dam across the channel of flowing water, thereby forming a wetland that further encourages both the vegetation and the beavers to propagate. A perforated, transparent or translucent cover sheet can be placed on or suspended above the mat. A water barrier can be placed below the mat. The wetland vegetation cools and humidifies the environment by transpiration of water.

Present invention teaches the method of using a keratin hydrolyzed peptide (“KHP”) solution to improve the growth of cotton under low temperature conditions. By selectively choosing specific weights of feathers and water, and treating the mixture to a high-temperature high-pressure hydrolysis process, the resulting solution is confirmed to contain at least 253 peptides and then infused to the soil containing the cotton seeds, the solution can also be sprayed to the leaf surface of cotton plants at a specific growth stage. Optionally, the KHP solution can be diluted by water, as disclosed in the specification, for applying to the soil and for spraying to leaf surface of cotton seedlings / plants.

Present invention teaches the method of using a keratin hydrolysis peptide (“KHP”) solution to improve the growth of tomato under low light conditions. By selectively choosing specific weights of feathers and water, and treating the mixture to a high-temperature high-pressure hydrolysis process, the resulting solution is confirmed to contain at least 253 peptides and then infused to the soil containing the tomato seeds or young seedlings. Optionally, the KHP solution can be diluted by water at different ratios as disclosed in the specification.

The invention discloses a Burkholderia gladioli (Burkholderia gladioli) CT-5 strain and an application of the Burkholderia gladioli CT-5 strain, and relates to the technical field of microorganisms. The strain is preserved in the China Center for Type Culture Collection, the preservation number is CCTCC NO: M20242732, and the preservation date is December 05, 2024. The Burkholderia gladioli (Burkholderia gladioli) CT-5 provided by the invention has a remarkable prevention and treatment effect (Plt, Plt) on idesia root rot caused by Fusarium solani (Fusarium solani), and the Burkholderia gladioli (Burkholderia gladioli) CT-5 has a remarkable prevention and treatment effect on idesia root rot caused by Fusarium solani (Busarium solani). The compound has the advantages that the compound can be used for inhibiting pathogenic bacteria of various plants, and the compound can be used for inhibiting pathogenic bacteria of various plants, such as Schizophyllum commune, Diaporthe erens, Colletotrichum acutatum and the like, and has a remarkable inhibiting effect on other various plant pathogenic bacteria such as the Schizophyllum commune, the Diaporthe erens, the Colletotrichum acutatum and the like. In a pot experiment, the biomass, soil nutrients, SOD, POD and CAT enzyme activities of idesia polycarpa seedlings in a CT-5 treatment group are remarkably improved compared with those of a pathogenic bacteria control group (FP) (Plt; 0.05), which indicates that the strain can promote plant growth and activate the activity of defensive enzyme in the body, so that effective control of idesia root rot is realized, and powerful theoretical basis and technical support are provided for sustainable development of idesia.

The invention relates to the technical field of microorganisms, and particularly discloses a saline-alkaline tolerant bacillus deserticola BW-13 with biocontrol and growth promoting functions and application thereof. The bacillus safensis BW-13 is preserved in the China Center for Type Culture Collection on January 13, 2025, the classification name of the bacillus safensis BW-13 is bacillus safeensis, and the preservation number of the bacillus safensis BW-13 is CCTCC NO: M 2025108. The strain BW-13 has relatively high salt tolerance, and still keeps good resistance under various stress conditions; meanwhile, the plant growth promoting agent has various plant growth promoting characteristics including nitrogen fixation, phosphorus solubilization and cellulase and protease secretion capacity, and pot experiment verifies that the plant growth promoting agent can improve the salt resistance of cucumber seedlings and promote plant growth; the strain has an antagonistic effect on a plurality of phytopathogens, and especially has a remarkable prevention and treatment effect on plant diseases such as apple ring spot, polygonatum kingianum anthracnose, pear tree rot and tomato gray mold caused by ascomycophyta pathogenic fungi.

The invention discloses an acer elegans cross breeding method based on flowering phase difference regulation and control, and belongs to the technical field of garden plant breeding. The method comprises the following steps: selecting an acer elegans variety of which the natural early flowering phase difference is greater than or equal to 10 days and the genetic distance is greater than or equal to 0.5 as a cross parent, carrying out low-temperature refrigeration and shading blue light supplementing treatment on a female parent to delay the flowering phase, and carrying out prolonged illumination, red light supplementing and hormone and nutrient solution spraying on a male parent to advance the flowering phase; male parent pollen is collected through a vacuum negative pressure adsorption device and stored in a closed container, a sucrose solution is sprayed to female parent stigmas before pollination, and repeated pollination is conducted through a directional nozzle at 9-11 o'clock every day; carrying out stratification treatment and temperature-difference temperature-control germination on the hybrid seeds, and carrying out light-temperature regulation and control seedling culture after sowing; the molecular marker is used for verifying the hybridization authenticity and target traits, phenotype determination is carried out on three-year-old seedlings to complete breeding, the hybridization obstacle caused by asynchronous flowering phases of the caenorhabditis elegans varieties is solved through the flowering phase regulation and control technology, and the hybridization success rate is increased.

The invention relates to the technical field of corn cultivation equipment, and particularly discloses a soilless cultivation device for sweet corn seed cultivation and a using method thereof.The soilless cultivation device comprises a placing ring, a rotating mechanism, a planting mechanism and a planting mechanism, the top of the placing ring is fixedly connected with an incubator, and the rotating mechanism is rotatably mounted in the incubator; and the protection mechanism is fixedly mounted on the rotating mechanism. Along with the growth of stalks of corn seedlings, the motor can be started to intermittently work in a reciprocating manner, and the driving rod connected with the output end of the motor drives the top cover to rotate, so that the corn plants are uniformly irradiated by sunlight, and the development of each corn plant is ensured; when the top cover rotates, the inner meshing ring on the outer surface of the culture box and the outer meshing ring on the top of the culture box are staggered, namely, the culture box is driven to rotate along with the rotation of the top cover, so that the uniformity of sunlight irradiation of the corn plants is further improved, the irradiation dead angle is greatly reduced, and the development effect of the corn plants is guaranteed.

A method of creating a wetland in a remote arid location includes identifying or establishing a channel of flowing water at the arid location, and installing therein a mat containing seeds, and / or seedlings, and a super absorbent polymer (SAP). Water is applied to the SAP, such that both edible and dam-constructing vegetation grows and matures from the mat. Beavers are then dropped into the arid location by parachute in containers that open upon landing. The beavers eat the edible vegetation and use the dam-constructing vegetation to construct at least one dam across the channel of flowing water, thereby forming a wetland that further encourages both the vegetation and the beavers to propagate. A perforated, transparent or translucent cover sheet can be placed on or suspended above the mat. A water barrier can be placed below the mat. The wetland vegetation cools and humidifies the environment by transpiration of water.

The invention discloses a method for evaluating enhancement and release seedling resources based on environmental DNA polymerization analysis. The method comprises the following steps: carrying out gridding partition on a target water area, collecting a water sample through a designed sampling scheme, and carrying out DNA extraction and high-throughput sequencing to obtain species sequence information of each sampling point. Sequencing data is subjected to species identification by using a bioinformatics method, released species are identified, a spatial abundance model is established, and a preliminary distribution map is generated. And establishing a DNA degradation kinetic model in combination with water area environmental parameters, and carrying out reverse correction on abundance distribution. And through a resource inversion model coupled with hydrodynamics, analyzing biomass distribution characteristics and migration laws of the release group, and obtaining a resource evaluation result. And finally, a species environment preference model is constructed based on migration path analysis, an optimal release area is matched in a target water area, a scientific scheme including release point locations, opportunities and quantity is generated, and a whole-process technical support and a decision basis are provided for enhancement and release.

The invention relates to a cultivation nutrient medium and a preparation method thereof. According to the nutrient medium, peat is completely abandoned, the coco coir, the straw and the biochar are combined to reduce ecological burden, the nutrient medium is an environment-friendly medium, the biochar fixes carbon and reduces emission, and the soil structure can be improved after long-term use; vermiculite improves the water-holding capacity, perlite and straw form a stable pore structure, and the ventilation porosity reaches 25% or above. Wormcast and a microbial agent synergistically release nitrogen, phosphorus and potassium, and the fertilizer efficiency is lasting. The microbial agent can inhibit soil-borne diseases such as fusarium and reduce the death rate of cultivated seedlings. The biochar adsorbs salt and toxins, and the EC value is stabilized at 1.2-1.8 mS / cm. The cost of the selected raw materials is reduced by 35% compared with that of a traditional substrate, and the substrate is suitable for large-scale production, suitable for vegetable seedling culture, potted flowers, organic farms and soilless culture systems, and especially suitable for saline-alkali soil or continuous cropping obstacle areas.

The invention provides a method for screening drought-enduring germplasm resources of macadamia nuts, and belongs to the technical field of plant germplasm resource screening. The screening method comprises the following steps: (1) sowing disinfected macadimia nut seeds into a seedling raising tray, and raising seedlings to obtain seedlings; (2) transplanting the seedlings obtained in the step (1) into a nutrient medium, and performing drought stress culture to obtain pretreated seedlings; and (3) determining drought tolerance indexes in the pretreated seedlings obtained in the step (2), and screening to obtain the macadimia nut drought-tolerant germplasm resources. According to the screening method provided by the invention, macadamia nut germplasm resources with relatively strong drought tolerance can be rapidly screened out, and powerful support is provided for cultivation of drought-tolerant varieties.

The invention discloses a sugar-free tissue culture microenvironment intelligent control system for facility flower seedling culture, and belongs to the field of intelligent agriculture. The system comprises a microenvironment regulation device, an LED light supplement regulation device, a carbon dioxide concentration regulation device and the like, a digital model construction module and an agricultural Internet of Things intelligent control platform. Key elements such as temperature and humidity, illumination, carbon dioxide concentration and nutrient solution of the flower seedling culture microenvironment can be accurately adjusted, and the requirements of different growth stages of flowers can be met; by means of a digital model and sensor feedback, automatic management is achieved, remote monitoring and operation can be achieved, manual intervention is reduced, the resource utilization efficiency is improved, and resource waste is avoided. A microenvironment precise regulation and control technology is adopted, so that the thermal load and energy consumption are reduced, the operation cost is reduced, and the economic benefit is improved; practical application verifies that the system can promote healthy growth of flowers, significantly improve flower quality and seedling culture management efficiency, and enhance market competitiveness of the flower seedling culture industry.

The invention relates to the technical field of flower cultivation, and discloses an efficient hippeastrum seedling cultivation device and an optimized cultivation method.The efficient hippeastrum seedling cultivation device comprises a box body, a motor is arranged on the inner wall of the box body, the output end of the motor penetrates through a fixing plate to be fixedly provided with a first chain wheel, and a partition plate is fixedly arranged at the bottom end of the fixing plate; a chain is connected to the tooth end of the first chain wheel, a second chain wheel is connected to one section of the chain, a rotating shaft is fixedly arranged in the middle of the second chain wheel, one end of the rotating shaft is rotationally connected to one side of a fixing plate, a guide rail is arranged on the side wall of the fixing plate, and a cultivation box is arranged on one side of the chain through a plurality of second fixing rods. Dynamic and stable cultivation of hippeastrum hippeastrum seedlings in the box body is achieved through cooperative operation of the motor, the chain wheel, the chain, the cultivation box, the guiding and stabilizing structure and other components, the cultivation box is always kept in a stable state that an opening and leakage holes face upwards, and healthy growth of the seedlings is facilitated. The problem that a cultivation container is unstable in traditional dynamic cultivation is solved.

The invention relates to the technical field of plant tissue culture, in particular to a Rhododendron pulchrum tissue culture method based on callus regeneration. According to the method, the tender cotyledons of aseptic seedlings are taken as explants, and an efficient Rhododendron pulchrum tissue culture and rapid propagation technical system is established through induction of calluses, subculture multiplication of the calluses, differentiation of adventitious buds, bud strengthening and rooting culture, so that complete tissue culture progeny plants are formed. The induction rate of the callus tissue of the system is 100.0%, the proliferation multiple of the callus tissue in a subculture cycle reaches 5.2 times, 28.5 adventitious buds can be differentiated from a callus tissue block with the size of about 0.5 mm * 0.5 mm * 0.5 mm, the rooting rate reaches 95.8%, the system is not limited by factors such as seasons, climate and regions, and efficient and rapid propagation can be achieved all the year round. Meanwhile, the establishment of the system also lays a technical foundation for genetic transformation improvement, mutant screening breeding and the like of the Rhododendron pulchrum based on the callus.

The invention discloses a cultivated land state monitoring method based on cultivated land boundary identification, and relates to the technical field of image analysis, and the technical scheme comprises the steps: carrying out the preprocessing of a periodically obtained cultivated land real-time image, and carrying out the screening to obtain a gray-scale map corresponding to a set optimal spectral band; based on the grey-scale map and the spatial distribution characteristics and the time sequence difference characteristics of the seedlings, calculating the comprehensive probability that each local peak pixel point represents the existence of the seedlings in the grey-scale map of the current period; based on the comprehensive probability, judging whether each local peak pixel point represents a seedling or not; dividing a cultivated land boundary based on a judgment result, and distinguishing a cultivated area and a non-cultivated area; according to the method, the existence probability of the seedlings is judged by utilizing the spatial distribution characteristics and the time sequence difference characteristics of the seedlings, the accuracy of cultivated land boundary identification can be improved, and the cultivated land state is periodically updated and monitored in real time.

The invention relates to the technical field of agricultural irrigation, and discloses an intelligent agricultural water-saving irrigation and fertilization device which comprises an irrigation box, sliding rails, an irrigation assembly, a self-walking stirring assembly, a scraping and blowing assembly and a cylindrical filter part, the irrigation box is arranged on the two sliding rails, the cylindrical filter part is arranged in the irrigation box, the irrigation assembly is installed on one side of the irrigation box, and the self-walking stirring assembly is installed on the other side of the irrigation box. The spraying device is used for spraying water and fertilizer to crops; the self-walking stirring assembly comprises a rolling wheel, a rod type stirring piece and a driving piece. Water-soluble fertilizer water beads on the surfaces of seedlings are scraped and blown through the scraping and blowing assembly, water-soluble fertilizer attached to the surfaces of leaves and stalks of the seedlings can be effectively removed and shaken off to the bottoms of the seedlings, and therefore waste of the water-soluble fertilizer is reduced, meanwhile, the water-soluble fertilizer can directly act on root systems of the seedlings and is fully absorbed by crops, and the water-soluble fertilizer can be applied to the roots of the seedlings. The utilization rate of the water-soluble fertilizer is increased, and the problem of volatilization of nutritional ingredients caused by strong quick-acting property and short lasting period of the water-soluble fertilizer is reduced.

The utility model discloses a greenhouse fruit and vegetable planting and cultivating frame which comprises cultivating frame bodies which are symmetrically arranged, placing plates capable of circularly ascending and descending along the cultivating frame bodies and cultivating pieces movably arranged on the placing plates. A circulating mechanism used for driving the placement plates to circularly lift along the cultivation rack bodies so as to balance illumination and temperature of the seedlings is arranged on each cultivation rack body, and each circulating mechanism comprises a circulating lifting part for lifting the placement plates and an anti-deviation part used for preventing the placement plates from deviating during circulation. When the device is used, the problem that in the prior art, when seedlings are located at relatively fixed positions, the temperature and illumination conditions borne by the seedlings are fixed accordingly, and consequently the growth states of the seedlings at different positions are remarkably different is solved.

The invention belongs to the field of biological agents, and particularly relates to bacillus siamensis and application thereof in the aspects of plant disease control, growth promoting and yield increasing. The bacillus siamensis XNC-3 provided by the invention is wide in antibacterial spectrum, can effectively inhibit various plant pathogenic fungi including phytophthora parasitica var nicotianae, has broad-spectrum antibacterial activity, and can be used for preventing and treating plant diseases, especially tobacco diseases. The bacillus siamensis has a promoting effect on tobacco seedling growth and seed germination, has growth-promoting and yield-increasing effects on tobacco, can remarkably increase the tobacco yield and improve the tobacco quality, is safe to the environment and has a very good application prospect.

The invention relates to the technical field of agricultural seedling optimization decision, and discloses a seedling optimization decision method and system based on a knowledge graph, and the method comprises the steps: constructing a causal graph, and recognizing the causal dependence relation between variables through a PC algorithm; carrying out anti-factual reasoning by adopting docalculus, and predicting the performance of the seedlings under the environment intervention condition; constructing a Bayesian network model, and carrying out uncertainty quantification by adopting variational reasoning; establishing a risk assessment index, and generating a seedling optimization strategy by applying a multi-objective optimization algorithm; performing comprehensive reasoning on the knowledge graph to generate a seedling optimization decision report; according to the method, by introducing the causal reasoning algorithm, the real causal relationship between the seedling characteristics and the environmental factors can be identified, and the method does not only depend on statistical correlation, so that the environmental adaptability prediction is more accurate.