3882results about "Soilless cultivation" patented technology

The invention relates to the technical field of temperature regulation, in particular to an intelligent root temperature regulation system for hydroponic crops and an implementation method thereof, and the system comprises a root system oxygen consumption monitoring module, an osmotic pressure state monitoring module, a root system metabolism state analysis module, a root temperature parameter reconstruction module and a nutrient solution circulation linkage module. According to the method, the metabolic rhythm state of the root system is judged through oxygen consumption rate gradient difference calculation and trend analysis, the cell injury risk is recognized through two-parameter logic judgment by combining the osmotic pressure change amplitude and the oxygen consumption trend, and the target root temperature is selected through gray correlation analysis according to the abnormal triggering temperature and the stable state temperature; a regulation and control instruction is generated, a PID algorithm is called in combination with real-time circulation flow velocity data to adjust the pump speed, closed-loop dynamic matching of a root temperature set value and a flow velocity behavior is achieved, the adaptability of root temperature response is enhanced, the real-time regulation and control capacity for metabolic imbalance is improved, and the stability and the moisture and nutrient absorption efficiency of a water culture environment root system are effectively improved.

The present disclosure relates to different techniques of controlling an agricultural system, as for example a controlled agricultural system, an agricultural light fixture and a method for agricultural management.Furthermore, the disclosure relates to an agricultural system, which comprises a plurality of processing lines for growing plants of a given plant type, wherein a first processing line in the plurality of processing lines is configured to move a first plurality of plants through the agricultural system along a route; and apply a first growth condition to the first plurality of plants to satisfy a first active agent parameter for the first plurality of plants.

The invention relates to the technical field of soilless culture nutrient solution dynamic optimization, and particularly discloses a soilless culture nutrient solution dynamic optimization method which comprises the steps of multi-source fusion monitoring data set generation, main nutrient element demand prediction, nutrient solution adjustment instruction set generation and nutrient solution adjustment effect evaluation. According to the invention, environment, plant physiology and nutrient solution state data are synchronously acquired, a short-term demand prediction model is utilized to predict nutritional demands, and an adjustment instruction set containing the supplement amount and supplement rate of the current nutrient solution is generated in combination with a plant growth stage, a current nutrient solution state and an environment factor; the adjustment effect of the nutrient solution adjustment instruction set is obtained by comprehensively evaluating the improvement degree of the plant physiological status and the stability of the nutrient solution after adjustment is finished; dynamic matching of nutrient solution supply and plant requirements is achieved, the nutrient utilization efficiency is improved, the adaptability of the system to environment changes is enhanced, and remarkable economic benefits and social benefits are achieved.

The invention relates to the technical field of totally-closed artificial light plant factory planting, in particular to a totally-closed artificial light plant factory tomato seedling raising method, which is characterized in that each stage and each link in the whole cycle process of tomato growth are accurately controlled, and the tomato seedling raising efficiency is improved. Comprising the steps of nutrient solution management, irrigation frequency management and seedling raising environment temperature control in the stages of seed treatment, substrate preparation, sowing and germination acceleration, seedling raising and the like. The selection of a planting light source in the seedling raising stage is obtained through creative labor on the basis of a large amount of experimental data; the formula of the nutrient solution is also obtained on the basis of tomato characteristics and a large amount of experimental data in combination with creative labor; and the technical prejudice of conventional means is overcome, and the temperature condition of low-temperature treatment is adopted. All the technical means are organically combined and mutually influenced and promoted, and the technical problem of excessive growth of tomatoes in an artificial light environment can be effectively solved.

The invention discloses a nutrient solution concentration regulation and control method and system for potato aeroponic cultivation, and relates to the technical field of fertilization, and the method comprises the following steps: extracting root feature data and concentration feature data; establishing a concentration trend prediction model based on the root feature data and the concentration feature data, and predicting the concentration change trend of the nutrient solution under different conditions by using the concentration trend prediction model; analyzing the change trend of the nutrient solution concentration under different conditions by using a feature analysis algorithm, and identifying key factors influencing the stability of the nutrient solution concentration; and based on the key factors, the nutrient solution is dynamically prepared. Key factors influencing the concentration stability are identified through a feature analysis algorithm, and the nutrient solution ratio is dynamically regulated and controlled, so that intelligent management and accurate supply of the nutrient solution concentration are realized, and effective support is provided for nutrition optimization of the potato aeroponic culture whole period.

The invention discloses an ecological floating bed for ecological environment protection, and relates to the technical field of ecological floating beds. The ecological floating bed comprises a floating plate and placing grooves uniformly formed in the floating plate; the planting mechanisms are uniformly arranged in the placement groove and are used for planting aquatic plants; the elastic pieces are arranged on the planting mechanisms and are used for reducing the flow rate of water flow entering the planting mechanisms; the flow guide plates are arranged on the outer side of the elastic piece at equal angles and used for reducing impact of water flow on the roots of the aquatic plants, and the auxiliary driving mechanisms are arranged at the two ends of the flow guide plates and used for driving the flow guide plates to rotate synchronously in the same direction and driving the elastic piece to stretch and deform in a self-adaptive mode. On one hand, the flow guide plates play a role in flow guide and dispersion in the water flow direction, impact damage to plant roots caused by water flow directly is effectively reduced, on the other hand, part of water flow can flow to the planting barrel through gaps between the flow guide plates and the elastic pieces, the retention time of water entering the planting barrel is prolonged, and therefore the purification effect of plants on the water is improved.

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.

Provided herein is a system for hydroponics growing of plants. An apparatus for a hydroponics system described herein includes: a tray configured to receive water from the hydroponic system, circulate the water through the tray, and return the water to the hydroponic system, where the tray includes one or more flow control features configured to regulate water flow through the tray, and a tray insert supported by the tray, where the tray insert includes a plurality of holes through a bottom surface of the tray insert, where the tray insert is configured to receive seeds on the bottom surface and maintain the seeds in a predefined depth of water. According to some embodiments, the one or more flow control features include one or more slots, where the one or more slots are each arranged to receive therein a barrier that blocks a portion of water flow out of the tray.

The invention relates to a high-frequency regeneration and rapid propagation method of Enkianthus chinensis tissue culture seedlings. The invention is characterized in that dormant axillary buds of semi-lignified young stems are used as the base. The method comprises the following main steps: sampling and disinfection treatment of explants, inducing of dormant axillary bud germination, inducing of adventitious bud and lateral bud high-frequency generation, strong seedling culture, test-tube rooting culture and acclimatization and transplanting. Finally, regenerative plants which have consistent parental character, excellent quality and strong stress resistance are obtained. According to the invention, lots of seedlings with consistent specification and excellent quality can be obtained within a short period of time, and marketization progress of Enkianthus chinensis is promoted powerfully.

A plant holder for holding an amount of rooting (growing) media in which plant roots develop that electrically isolates the plant roots from an electric field used to deliver water and plant nutrients to that rooting media via a high-voltage, low-current electrospray system. A conductive material disposed proximate the rooting media receives electrically charged droplets including water or nutrients and passes the water or nutrients to the rooting media while directing the electrical charge to ground.

The invention discloses a movable ecological floating bed device and an ecological restoration method. The device comprises a walking mechanism, and an ecological floating bed is arranged on the walking mechanism; aquatic plants are planted on the ecological floating bed (2); an underwater suspension device (3) is arranged at the bottom of the ecological floating bed (2); the walking mechanism can drive the ecological floating bed to walk in the water body, so that the floating bed drives the aquatic plants and the underwater suspension device to move. The walking mechanism drives the ecological floating bed to walk in the water body, so that the floating bed drives the aquatic plants and the underwater suspension device to move, the water body is in a dynamic disturbance environment, the water body purification effect is improved, the walking mechanism can adjust the height of the ecological floating bed, and in the rainfall period, smooth water passing of a river channel can be guaranteed, and flood drainage is not affected.

The invention provides a hydroponic infinite propagation method for bamboo reed. The method mainly comprises the following steps: S1, selection and pretreatment of lateral branches of bamboo reed: in March to May, cutting out the lateral branches with the length of 15-25cm by using sterile branch scissors, cleaning the lateral branches by using clear water, and culturing the cleaned lateral branches in an ABT rooting powder No.1 solution for 24h; s2, hydroponic treatment: putting the bamboo reed lateral branches treated by the rooting powder solution into a hydroponic container filled with clear water for hydroponic treatment; s3, carrying out plant division treatment, namely separating a primary tillering plant from a stock plant by using a sterile scalpel on a bamboo reed side branch with the primary tillering reaching 10-15cm; s4, stock plant transplanting and primary tillering plant water planting; s5, circulating operation: repeating the steps S3 and S4; and continuously utilizing the tillering plants to carry out hydroponic propagation until the required number of seedlings is reached. The method is simple to operate, low in cost, neat and strong in transplanted seedlings, high in propagation efficiency and capable of infinitely propagating, and can effectively meet the requirements of the market on the bamboo reed seedlings.

The present disclosure relates to the field of Controlled Environment Agriculture (CEA). It details a predictive method and system for optimizing the use of resources and crop productivity in indoor farming across an entire crop cycle. The present disclosure provides for a predictive method and system for optimizing resource use and crop productivity in indoor farming. According to one aspect of the present disclosure, a predictor for optimizing resource use and crop productivity in indoor farming. According to a second aspect of the present disclosure, a predictive system for optimizing resource use and crop productivity in indoor farming. According to a third aspect of the present disclosure, a method of using a predictive system for optimizing resource use and crop productivity in indoor farming.

The present invention relates to the technical field of hydroponic vegetable planting. Disclosed is an automatic sowing device for hydroponic vegetables. The present invention comprises a loading mechanism; a spraying mechanism for spraying a nutrient solution to a planting board is arranged on a side surface of the loading mechanism; a sowing mechanism for sowing seeds is arranged on a side surface of the spraying mechanism; a positioning mechanism for positioning the planting board is arranged in the sowing mechanism; a feeding mechanism for feeding the seeds is arranged in the sowing mechanism, and the feeding mechanism is located directly above the positioning mechanism. In the present invention, the sowing mechanism is provided to automatically sowing seeds, and manual sowing is avoided, thereby improving the working efficiency; moreover, the feeding mechanism is provided to guide seeds, avoiding secondary placement caused by seeds not entering planting holes of a planting board due to deviation during sowing, improving the working efficiency; in the present invention, limiting wheels are provided to position the planting board, thereby avoiding the situation in which seeds cannot enter the planting holes of the planting board during sowing.

The invention relates to the technical field of soilless culture substrates, in particular to a soilless culture substrate based on biochar and mushroom dreg resource utilization and a preparation method and application of the soilless culture substrate. The soilless culture substrate comprises the following raw materials in parts by mass: 30-50 parts of mushroom dregs, 20-30 parts of charcoal, 10-15 parts of vermiculite, 8-12 parts of perlite, 5-10 parts of humic acid and 2-5 parts of trace elements. The soilless culture substrate can effectively utilize biochar and mushroom dreg resources, provides a good physical environment and sufficient nutrient supply for plant growth, improves the stress resistance and yield quality of plants, reduces dependence on traditional non-renewable substrate resources, and reduces the pressure of agricultural wastes on the environment.

The invention relates to the technical field of space life science, in particular to a multi-axis control and acoustic levitation combined microgravity environment simulation closed cultivation device and a control system.The multi-axis control and acoustic levitation combined microgravity environment simulation closed cultivation device comprises two vertical sliding rail mechanisms, a first rotating servo motor is arranged on each vertical sliding rail mechanism in a sliding mode, and an outer rotating frame is driven to rotate in the first direction; the second rotating servo motor is fixed to the outer rotating frame and drives the cultivation chamber connected with the inner rotating frame to rotate in the second direction, and the acoustic levitation device is installed in the cultivation chamber. According to the invention, random gravity disturbance is introduced through random sliding on the sliding rail, and a microgravity environment with coupled random gravity and rotating speed double factors is constructed in combination with random rotation of double shafts; according to the method, the influence of microgravity on plant leaf respiration under the condition of no heat convection and air shear force can be deeply researched, the influence of air heat convection and shear force can be inhibited, the space microgravity cultivation condition can be truly simulated, and a reliable platform is provided for ground plant space cultivation research.

The invention discloses a method for improving cadmium accumulation and transport capacity of sedum plumbizincicola, and relates to the field of plant heavy metal pollution remediation. The method comprises the following steps: preparing a selenium solution with the selenium ion concentration of 5 [mu] M, adding the selenium solution into the cadmium-polluted water environment, planting sedum plumbizincicola seedlings in the cadmium-polluted water environment, and carrying out cultivation management; plant pretreatment: culturing sedum plumbizincicola seedlings in non-polluted soil for at least three generations, selecting sedum plumbizincicola plants which are uniform in size and healthy in growth vigor, and pre-culturing the sedum plumbizincicola plants in a Hoaglands nutrient solution for two weeks for rooting; the healthy plants are transferred into Hoagland nutrient solution containing selenium solution to be cultured, and the plants are harvested after 28 days. According to the method, the high-concentration cadmium polluted water environment is simulated, and selenium is applied in the growth period of the sedum plumbizincicola, so that absorption and enrichment of the sedum plumbizincicola on cadmium are promoted, the plant biomass is improved, the toxic effect of cadmium on plants is relieved, and efficient remediation of the sedum plumbizincicola on the cadmium polluted environment is achieved.

The invention discloses a rice soilless culture device in the field of rice culture. The rice soilless culture device comprises a water tank; the rice cultivation module comprises a plurality of rice cultivation units which are sequentially communicated end to end, each rice cultivation unit comprises a cultivation box and a root system channel, a water inlet and a water outlet are formed in the outer side of each cultivation box, each root system channel is arranged in the corresponding cultivation box and comprises a main channel, the upper end of each main channel is communicated with the corresponding cultivation box, and the lower end of each main channel is communicated with the corresponding cultivation box. The lower end of the main channel is connected with a plurality of first-stage channels, the side of the main channel is communicated with a water inlet, the lower end of each first-stage channel is connected with a plurality of second-stage channels, the lower end of each second-stage channel is connected with a plurality of third-stage channels, and the tail ends of the main channel, the second-stage channels and the third-stage channels are all communicated with a water outlet through a public channel; the water pump is used for pumping water in the water tank into the rice cultivation module; the water supply pipeline is used for communicating the rice cultivation module, the water pump and the water tank to form a circulating waterway. According to the method, the refined and factory-like cultivation requirements of rice can be met.

The invention discloses a method for ecologically controlling pests in a citrus orchard, which comprises the following steps of: preparing mint, salvia officinalis and ageratum conyzoides in a ratio of 1: 1: 1 in the middle of the citrus orchard to form a strip-shaped or chessboard-shaped layout with the coverage area of 30-50%, and synergistically repelling the pests and attracting natural enemies by utilizing plant volatile matters; the method specifically comprises the steps that an intercropping belt is arranged at the position 1 m away from citrus trees, the belt width is 2 m, and the plant row spacing is 30 cm * 40 cm; citrus field planting is conducted, transplanting is conducted in spring of the next year, organic fertilizer and regular pruning and covering (three times every year, soil covering is conducted after smashing, and wood vinegar is added) are combined; mint releases menthol, salvia officinalis releases eucalyptol to expel parasites, ageratum conyzoides attracts predatory mites to control red spiders, and mineral oil and a yellow sticky card are supplemented for prevention and control; aiming at facility cultivation, LED supplementary lighting (red light: blue light: white light = 3: 1: 1) and fan diffusion volatile matters are additionally arranged. The use of chemical pesticides is reduced by 40% or above, the pest population density is reduced by 50%-70%, meanwhile, the diversity of soil organic matter and microorganisms is improved, and the method is suitable for open-air and greenhouse citrus orchards.

An apparatus for oxygenating water for irrigating a crop or for animal water, the apparatus comprising a delivery mechanism for delivering water to an animal for animal water or to the crop, the delivery mechanism comprising: a syringe; a gas inlet line and a water inlet line; and a source of oxygen or a gas mixture comprising oxygen; a tank of water under atmospheric pressure; a coil pipe; a device, such as a backpressure regulator, through which water exiting the coil passes such that the water can be directed completely to the water supply zone or crop, or partially to the water supply zone or crop and partially to the storage tank; the apparatus comprises means for injecting oxygen or a mixture comprising oxygen into the water upstream of the pump; the device comprises a water pressure sensor located downstream of the pump, i.e., on the discharge side, and a water flow sensor preferably mounted on the discharge side of the pump. The invention also relates to a method for oxygenating water for irrigating crops or for animal water.

The invention relates to the technical field of cultivation and planting devices, and discloses a three-dimensional cultivation and planting device with an atomization structure, the three-dimensional cultivation and planting device comprises a rack and a rotating column, the rotating column is rotatably connected to the inner wall of the right side of the rack through a bearing, a spur gear is fixedly connected to the rotating column, and a motor is fixedly connected to the outer wall of the left side of the rack; a spur gear is arranged on the rack and makes contact with a toothed chain, a hinge rod is fixedly connected to the outer wall of the side face of the toothed chain, an adjusting mechanism is arranged on the rack and comprises an auxiliary mechanism, the adjusting mechanism comprises an arc-shaped plate, and the arc-shaped plate is hinged to the outer wall of the side face of the hinge rod. In the invention, a nutrient solution is converted into vaporific particles through the atomizing nozzle frame and is directly sprayed to the root system of a plant, so that the root system efficiently absorbs water, nutrients and oxygen in a suspended state, a matrix or soil is not needed, the propagation of soil diseases and insect pests is reduced, the nutrient utilization rate is also improved, and healthy growth and high yield of the plant are facilitated.

The utility model discloses an intelligent water and fertilizer supply device for a nursery pond, which comprises a nursery pond unit comprising a nursery pond frame and a nursery pond arranged at the upper part of the nursery pond frame; the liquid supply unit comprises a water source pool and a nutrient solution pool which are arranged below the nursery pond, the water source pool is connected with the nursery pond through a first water pump and a liquid supplementing pipe, the nutrient solution pool is connected with the nursery pond through a second water pump and a fertilizer supplementing pipe, and the bottom of the nursery pond is connected with the nutrient solution pool through a liquid discharging pipe; electromagnetic valves are arranged on the liquid supplementing pipe, the fertilizer supplementing pipe and the liquid discharging pipe; according to the utility model, water and fertilizer adding and water and tray airing operations can be automatically controlled, the problems of untimely water and fertilizer adding, low tray airing efficiency and high labor cost of traditional flue-cured tobacco floating seedling raising are effectively solved, and the strong seedling rate of flue-cured tobacco is improved.

The invention provides a tissue culture method and an acclimatization and transplantation method of coptis chinensis, and belongs to the technical field of plant tissue culture. The tissue culture method of the coptis chinensis comprises the following steps: (1) taking a tender shoot of a coptis chinensis rhizome as an explant, sterilizing, and inoculating into a basic culture medium for culturing, so as to obtain a coptis chinensis sterile seedling; (2) inoculating the aseptic seedlings of coptis chinensis into an adventitious bud differentiation culture medium for culture to obtain adventitious buds of coptis chinensis; (3) inoculating the coptis chinensis adventitious buds into a proliferation culture medium for culturing to obtain coptis chinensis proliferation seedlings; and (4) inoculating the coptis chinensis multiplication seedlings into a rooting culture medium for culture to obtain coptis chinensis test-tube seedlings. The tissue culture and acclimatization and transplantation method provided by the invention can improve the propagation efficiency of the coptis chinensis, remarkably shorten the growth cycle of the coptis chinensis, provide technical support for rapid propagation and sustainable utilization of resources of the coptis chinensis, and have wide application prospects.

The invention discloses a sustainable luring ecological floating island system which is characterized in that fish schools in an open type water area are induced to enter a water area where an ecological floating island is located through planned enhancement releasing feeding and going out, and the fish schools in the water area where the ecological floating island is located are captured through a fishing device and put into a besieging space. The method can ensure that the species and number of aquatic organisms in an ecological floating island ecological system are kept relatively stable within a certain time, conforms to the development concept of sustainable fishery, can enable fishing and fishing pleasure and ecological environment protection to cooperatively develop, can ensure that the fishing and fishing pleasure can be continuously and healthily carried out for a long time, and has a wide application prospect. Therefore, a sustainable and stable fishing place is provided for fishing enthusiasts through a sustainable inducing and breeding combined mode, and meanwhile protection and recovery of a water area ecological system are considered; the invention further discloses a sustainable fishing method of the sustainable luring ecological floating island system, and by means of a sustainable luring combination mode of the ecological floating island system, catching and fishing activities can be continuously carried out.

The invention relates to the technical field of agricultural application of nano materials, and discloses a preparation method and application of a photosynthetic accelerant containing carbon quantum dots. Urea and citric acid are adopted as raw materials, and the nitrogen-carbon molar ratio and hydrothermal reaction parameters are optimized, so that efficient doping of nitrogen and accurate regulation and control of the particle size are achieved, and the photosynthetic accelerant containing the carbon quantum dots is obtained. The nitrogen-doped carbon quantum dot photosynthetic promoter with excellent upconversion performance is successfully synthesized, the promoter has good water solubility and biocompatibility, the photosynthetic efficiency of plants can be greatly improved within the concentration range of 0-100 mg / L, a safe application window is defined, and by establishing foliage spraying and water planting dual-mode application specifications, the application range of the nitrogen-doped carbon quantum dot photosynthetic promoter is widened, and the application range of the nitrogen-doped carbon quantum dot photosynthetic promoter is widened. The problems that current crops are insufficient in solar spectrum utilization and low in light energy conversion efficiency are solved in a targeted manner by utilizing an ultraviolet light-photosynthetically active radiation conversion function mediated by the carbon quantum dots and combining the targeted enrichment permeation characteristic of the carbon quantum dots in chloroplast.

The utility model discloses a bed body frame of a seedling raising bed, which is used for placing hole trays for seedling raising and comprises a plurality of cross beam section bars, a plurality of supporting pipe columns and connecting rods, the cross beam section bars are arranged in parallel, the supporting pipe columns are also arranged below the cross beam section bars vertically, and the connecting rods are connected with the cross beam section bars. The adjacent supporting pipe columns are connected through the connecting rods. Each cross beam sectional material comprises a cross plate and a separation part, the separation part is vertically arranged on the upper surface of the cross plate, a sliding groove is formed by the separation part and the upper surface of the cross plate, and the hole tray is placed on the sliding groove of the adjacent cross beam sectional material and can slide in a reciprocating mode along the sliding groove. The hole tray is simple in structure, high in strength, high in precision, good in stability and capable of enabling the hole tray to slide smoothly in the sliding groove.

The invention relates to a mycorrhizal cultivation method for improving the stress resistance of pinus khasys seedlings, and belongs to the technical field of agricultural planting, the cultivation method comprises the following steps: (1) compounding fibrous belly fungi, bolete and russule virens into a microbial inoculum, and culturing to prepare microcapsules; (2) taking turf, vermiculite, humus soil and perlite as substrates, and adding a microcystis agent and a water-retaining agent; (3) the seeds are disinfected and sown, and seedlings are domesticated through light intensity gradient, water stress and temperature fluctuation; 4, during transplanting, abscisic acid is used for treating root systems, organic fertilizer is pre-filled, and mycorrhizal activation promoting liquid is perfused, through the synergistic effect of composite mycorrhizal fungi and stress domestication, the stress resistance, the survival rate and the afforestation adaptability of pinus khasys seedlings are remarkably improved.

The invention relates to the field of agricultural planting, in particular to a layered hydroponic pool nutrient solution supply system which comprises at least one liquid level height maintaining mechanism, at least one sliding switch mechanism and a nutrient solution adding control mechanism, and the liquid level height maintaining mechanism is connected with the nutrient solution adding control mechanism through the sliding switch mechanism. Opening and closing of the infusion valve and starting and stopping of the nutrient solution adding control mechanism can be controlled according to lifting of the floating body, and nutrient solution supply is achieved through cooperation of all the mechanisms. According to the layered water planting device, the effects that nutrient solution supply can be automatically and accurately conducted on the layered water planting pool, nutrient supply needed by growth of the water planting plants is guaranteed, meanwhile, control is achieved through a mechanical structure, and the cost and maintenance problems caused by intelligent control are reduced are achieved.

The invention relates to the field of plant cultivation, and particularly discloses a lifting type high-density strawberry annual production method capable of breeding seedlings in spring and summer and fruiting in autumn and winter, which comprises the following steps: planting strawberry stock plants on a lifting type high rack after cold demand accumulation, and carrying out long-day high-temperature treatment to promote stolons to grow; cutting the seedlings formed on the stolons into a hole tray placed on a high rack in a pressure drawing manner, cultivating until the root system is robust, and cutting off the stolons; the obtained child seedlings are new seedlings, and the mother plants are old seedlings; and processing the new seedlings and the old seedlings at low temperature and short day in autumn and winter so as to enable the new seedlings and the old seedlings to bud and bear fruits in autumn and winter of the current year, and harvesting the strawberries mature in the next year. According to the method, strawberry stock plants are subjected to low-temperature refrigeration treatment before field planting, it is ensured that stolons are bred in spring and summer, plug seedlings needed by production are cultivated, meanwhile, the stock plants are kept to continue to bear fruits, tillering increase, inflorescence increase and fruit increase are promoted due to the fact that a large number of stolons grow, and the high-yield effect is achieved.

The invention belongs to the technical field of crop pollution prevention, and particularly relates to a rice heavy metal adsorption and isolation method based on iron agent regulation and control. According to the method, the iron agent is applied to the polluted rice field soil to induce the soil-rhizosphere interface to form an iron film, heavy metals (such as As, Cu, Pb and Cd) are fixed by virtue of adsorption and complexing effects of the iron agent, and migration of the heavy metals to rice roots is reduced, so that accumulation of the heavy metals at edible parts (leaves and ears) of the rice is reduced; the tolerance of the rice in a polluted environment is enhanced; and the risk of heavy metals in a food chain is reduced. Experiments show; through treatment of an iron film formed by a certain iron-based concentration, accumulation of the heavy metals in the rice leaves can be remarkably reduced, and the accumulation amount of the heavy metals in the rice leaves is far lower than the accumulation amount (1 / 40-1 / 120) of the heavy metals in rice roots. The invention provides an effective solution for farmland soil remediation and crop safety production.