595results about "Liquid fertiliser distribution" patented technology

The invention relates to the technical field of intelligent control, and discloses a water-saving fertilization variable control method suitable for sandy soil, and the method comprises the steps: obtaining collection data based on a sensor; and establishing and updating an infiltration-storage-leaching loss prediction model of the sandy soil according to the collected data, performing state estimation on soil moisture and nutrient states, and calculating root layer moisture deviation, fertilizer concentration deviation and deep seepage risk. And executing model predictive control in the rolling time domain to obtain a control result. And executing water-saving fertilization operation according to the control result. In the execution process, the soil volume moisture content, the soil water potential, the soil conductivity and shallow layer leakage observation data are fused, the prediction model is corrected, the control result is dynamically adjusted according to the correction result, and when the environment wind speed exceeds a set threshold value, the spray irrigation parameters are corrected. The fine level of control is improved, deep layer leakage can be inhibited under the sandy soil condition, water and fertilizer balance of a root layer is guaranteed, and external disturbance is coped with.

The present disclosure relates to a gas explosion type intelligent variable-rate fertilization scarifier for a tea garden. The gas explosion type intelligent variable-rate fertilization scarifier includes a walking mechanism, a fertilization-scarifying mechanism, a gas explosion mechanism, a solid fertilizer supply mechanism, and a water fertilizer supply mechanism. The fertilization-scarifying mechanism includes a transmission assembly, a detection assembly, and a fertilization-scarifying assembly. A first fertilizer conveying pipeline is fixedly connected between the solid fertilizer supply mechanism and the fertilization-scarifying assembly, and a second fertilizer conveying pipeline is fixedly connected between the water fertilizer supply mechanism and the fertilization-scarifying assembly. Each of the first fertilizer conveying pipeline and the second fertilizer conveying pipeline is provided with a solenoid valve. The walking mechanism, the gas explosion mechanism, the solid fertilizer supply mechanism, the water fertilizer supply mechanism, the fertilization-scarifying mechanism and the solenoid valves are all electrically connected to a same controller.

A mobile agricultural machine includes a row unit having a furrow opener mounted to the row unit and configured to engage a surface of ground over which the mobile agricultural machine travels to open a furrow in the ground. A furrow closer is mounted to the row unit behind the furrow opener and configured to engage the surface of the ground to close the furrow. A furrow sensor system is mounted to the row unit and configured to sense characteristics relative to the furrow opened by the furrow opener and generate a sensor signal indicative of the characteristics. The mobile agricultural machine can further include a control system configured to determine a furrow quality metric corresponding to the furrow sensed by the furrow sensor system based on the sensor signal and generate an action signal to control an action of the mobile agricultural machine based on the furrow quality metric.

The invention relates to the technical field of intelligent agriculture, in particular to an intelligent water-saving irrigation system for intelligent agriculture, which comprises a multi-source heterogeneous sensing module for collecting farmland soil data, crop physiological data, meteorological environment data and irrigation equipment operation state data; the AI dynamic decision-making module constructs a TFT time sequence prediction model, calculates the real-time water demand and the ecological adaptation coefficient of crops by combining a crop physiological coupling algorithm, and dynamically generates a personalized irrigation scheme; the self-adaptive regulation and control module is used for implementing a personalized irrigation scheme and carrying out water, fertilizer and pesticide integrated precise putting and multi-water-source dynamic scheduling through a magnetic control driving mode and a flow closed-loop control algorithm; the irrigation effect feedback module verifies the execution effect of the personalized irrigation scheme in real time, and dynamically executes a feedback optimization action in combination with a preset deviation threshold value; and the block chain data security module performs encrypted storage and access traceability on the irrigation whole process data. Therefore, the problems of insufficient prediction accuracy, insufficient water, fertilizer and pesticide feeding precision and the like in the prior art are solved.

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 relates to the technical field of agricultural irrigation, and particularly discloses an intelligent agricultural water and fertilizer integrated irrigation system, which comprises an environment and crop state sensing network used for collecting soil, weather and crop phenotype data; the multi-source data fusion and demand analysis engine is used for associating data and analyzing water and fertilizer demands of individual crops; the dynamic decision-making unit based on the crop growth model is used for generating a partition variable irrigation and fertilization instruction through rolling optimization; and the partition variable execution mechanism is used for accurately executing the differentiated instructions. By means of the scheme, personalized precise water and fertilizer management of different crops in the field is achieved, the water and fertilizer utilization efficiency is remarkably improved, and balanced growth of the crops is promoted.

Methods and apparatus to control agricultural product application rates are disclosed. An example system to control agricultural product application rates includes a field area processor to determine an area of a field to be covered, and an application rate processor including an end product processor to determine an amount of product to be utilized during an application session, the amount of product to be utilized based on an amount of product on a vehicle and a final product amount, and an application rate calculator to determine a first application rate to be implemented by an applicator based on the amount of product to be utilized and the area of the field to be covered.

The invention relates to the technical field of mobile fertilization, and discloses a mobile fertilization device utilizing self-control fertilization and a use method thereof.The mobile fertilization device comprises a fertilizer mixing mechanism, a time sequence mechanism, a fertilization mechanism and a mobile trolley, the fertilizer mixing mechanism, the fertilization mechanism and the time sequence mechanism are all fixed to the mobile trolley, and the fertilization mechanism is connected with the fertilizer mixing mechanism; the fertilizing mechanism sprays mixed fertilizer into farmland, a stirring assembly is connected in the fertilizer mixing barrel, the grading hopper is vertically divided into a plurality of fertilizer storage cavities, gates are arranged at the bottoms of the fertilizer storage cavities, the timing mechanism comprises a cam shaft, a plurality of cams and a plurality of push rods, the cams are rotatably connected with the cam shaft, the cams are different in shape, and the push rods are connected with the cam shaft. The first ends of the multiple push rods are connected with the multiple cams in a one-to-one correspondence mode, the second ends of the multiple push rods are connected with the multiple gates in a one-to-one correspondence mode, the push rods convert rotary motion of the cams into linear motion of the gates, and the mixing degree of various fertilizers can be enhanced.

The invention relates to the field of drip irrigation regulation and control, in particular to an accurate regulation and control method for corn root layer nitrogen under the drip irrigation condition, which comprises the following steps: standardizing multi-source remote sensing soil data of a land parcel to obtain soil grid points, and evaluating the crop growth adaptive relative grade of the grid points; carrying out factor modeling and self-adaptive grading on the soil erodibility parameters to obtain soil fertility potential grades of the grid points; carrying out fusion evaluation on global attribute fluctuation and spatial heterogeneity to obtain adaptive spatial context weight factors of the grid points; performing fusion evaluation on the adaptive spatial context weight factors of the grid points and the soil fertility potential levels of the grid points to obtain gradient consistency distance measurement between the grid points; fuzzy clustering analysis is carried out through gradient consistency distance measurement between grid points to obtain an optimized management partition map and a differentiated drip irrigation strategy, so that the control complexity of a drip irrigation pipe network is reduced, and the drip irrigation precision and the fertilization efficiency are improved.

The invention provides a water and fertilizer on-line accurate detection and irrigation control system which is used for irrigation of hardened water channels in low-latitude plateau areas. Comprising a cloud box, a data acquisition module, an image recognition module, a system PLC controller and a remote control and system alarm. The cloud box establishes a real-time and historical database based on the data acquired by the data acquisition module, further comprises an irrigation volume model and a crop growth period moisture management model, and makes and outputs an irrigation decision based on the irrigation volume and moisture management model; the data acquisition module is used for acquiring soil or matrix data and field water level; the image recognition module collects crop growth images to enter different period schemes; and the PLC receives an irrigation decision or controls a lifting telescopic rod or a water gate decision. According to the system, large-scale intelligent planting of crops is achieved, a large amount of manpower is saved, the problem that the low-latitude plateau green efficient water-saving irrigation technology lacks is solved, and the crop production amount is greatly increased.

The invention discloses a crop growth perception and control system based on a multi-modal large model, and relates to the technical field of artificial intelligence, and the system comprises a data obtaining unit which is used for obtaining a crop canopy image covering a farmland space unit, soil sensor data, environment sensor data and farming operation information in a plurality of collection periods, determining a crop growth basic value and constructing a crop growth graph signal sequence; the growth prediction unit is used for constructing a crop growth Koopman evolution diagram signal processing model on the basis of the farmland space topological diagram and the crop growth diagram signal sequence; and the control execution unit is used for controlling irrigation equipment and fertilization equipment to execute corresponding operation according to the crop growth vigor control strategy. The method can effectively solve the problems of insufficient multi-modal data fusion, lack of spatial correlation modeling, unstable growth prediction, dispersed control strategies and the like in the prior art.

The invention provides a field potato drip irrigation fertilization method and system based on feedback control, and relates to the technical field of agricultural irrigation. Gains of a PID controller form individual vectors, an initial population is generated, and an optimal compound fertilizer flow setting model is constructed and trained; intelligently determining a target compound fertilizer flow set value through a compound fertilizer flow setting model according to potato tuber feedback data, and constructing a first fitness function in combination with the actual compound fertilizer flow output of the system; selecting individuals in the initial population based on a fitness function to carry out splicing crossover operation to obtain spliced crossover individuals; carrying out equivalence on a signal transmission process of the motor system, and establishing a second fitness function based on an equivalent result; the spliced and crossed individuals are recombined into eight individuals, recombination is selected based on a second fitness function value, the selected recombined individuals are placed in an iteration population, iteration is conducted continuously, and potato drip irrigation and fertilization control is completed.

The utility model discloses a seedling raising device for saffron crocus planting, which belongs to the technical field of saffron crocus planting and comprises a base, a seedling raising pot is fixedly mounted on the upper surface of the base, a solution tank is fixedly mounted on the side wall of the base through a bottom plate, an expansion component is arranged on the side wall of the seedling raising pot, and the solution tank is fixedly mounted on the bottom plate. A stirring assembly is arranged in the solution tank; according to the seedling raising device, by arranging the expanding assembly, a driving motor on a fixing plate and a water pump in a solution box are started at the moment, the driving motor drives a reciprocating lead screw to rotate on a supporting plate at the moment, meanwhile, a threaded sleeve drives a movable frame to do synchronous reciprocating motion, and the movable frame drives a spray head to do reciprocating motion on a seedling raising pot; the spraying area of the spray head is enlarged through the moving frame, the fertilizer nutrient solution can be evenly distributed on the whole seedling raising pot area through the moving spray head, seedlings in the seedling raising pot can effectively absorb the fertilizer nutrient solution, healthy growth of the seedlings is facilitated, and the cultivation quality of the seedling raising pot is improved.

The invention relates to the technical field of garden seedling raising, in particular to a garden seedling raising device and a seedling raising process thereof.The garden seedling raising device comprises a feeding table, the right side of the outer wall of the top of the feeding table is fixedly connected with a matching frame, and the left side of the outer wall of the top of the feeding table is fixedly connected with a soil feeding mechanism. Automation and high efficiency of garden seedling raising are achieved, accurate matching and automatic filling of soil ingredients are achieved through a finely designed soil batching and discharging system and an ingenious mechanical transmission structure, the seedling raising efficiency is greatly improved, and meanwhile the automatic rotating disc and the pushing mechanism are arranged, so that the seedling raising efficiency is greatly improved. According to the seedling raising device, the lifting mechanism is arranged, so that the cultivation pots can be orderly and accurately conveyed to all working procedures, smoothness and continuity of the seedling raising process are ensured, in addition, accurate control over the lifting mechanism is achieved through meshing of the gear and the rack plate, and stable conveying of the cultivation pots is achieved through cooperation of the semicircular groove and the pushing plate.

The invention discloses a constant-height adaptive spraying method based on a convolutional neural network and meta-learning, and aims to solve the problems of seemingly constant height and actual non-uniformity caused by the fact that spraying effectiveness and constant-height control are not closed-loop and only the height of a nozzle is controlled but deposition distribution uniformity cannot be guaranteed. The method comprises the following steps: obtaining a canopy image, a pose track, a distance from a nozzle to a canopy and a spraying parameter, carrying out time alignment, and carrying out geometric correction and spraying width coordinate system alignment on the canopy image based on the pose and the track; using the calibration sample to carry out meta-learning rapid adaptation on the deposition distribution estimation convolutional neural network, and outputting deposition distribution, canopy features and uniformity indexes; constructing a micro-deposition agent model composed of a nozzle deposition kernel function, trajectory convolution and attenuation modulation; spraying parameter reference values are optimized according to a deposition uniformity target in the outer ring micro-MPC, constant-height control is achieved in the inner ring micro-MPC with the minimum distance deviation and constraint of the change rate and the safety distance, and the technical effects of deposition distribution closed-loop optimization and constant-height safety tracking are achieved.

The invention discloses an accurate regulation and control system for the fertilizer injection amount of a water and fertilizer integrated machine, and relates to the technical field of water and fertilizer regulation and control, the system comprises a data acquisition unit, a yield analysis unit, a form analysis unit, a region division unit and an accurate regulation and control unit; according to the invention, the composite farmland is divided into the core area, the boundary buffer area and the overlapped permeation area, and the irrigation amount is differentially regulated and controlled according to the water and fertilizer permeation rule, so that the problems of fertilizer waste and crop growth imbalance caused by excessive boundary permeation of a traditional water and fertilizer integrated machine in a composite planting scene are effectively solved; and meanwhile, growth period intelligent identification is carried out in combination with crop form images, and suitable water and fertilizer intervals in different growth periods are dynamically optimized by fusing historical yield data, so that the accuracy and adaptability of water and fertilizer supply are remarkably improved, scientific regulation and control of full-cycle growth of crops are ensured, and resource waste and environmental pollution caused by excessive fertilization are avoided.

Implement apparatus may be configured to displace ground material. For example, an implement may include an extension member coupled to a roller apparatus. The extension member may be coupled to a mounting apparatus configured to mount each of a crumbler, a hipper, a bermer, a bermer, crumbler combination apparatus, or a chopping apparatus.

The invention relates to an intelligent control method and system for high-pressure atomization irrigation and a storage medium of the intelligent control method and system, and aims to solve the problem that the quality is inconsistent due to the fact that traditional water and fertilizer management of high-value crops is difficult to sense the internal physiological state of the crops in real time. Randomly selecting a plurality of offering samples in each management partition for destructive sampling, and obtaining crop truth value data through physiological and biochemical detection; then, an irrigation rule base is established and dynamically updated based on the truth value data, and then variable control instructions are generated for the management partitions in combination with the real-time environment data; the invention further provides a system for implementing the method and a storage medium, accurate regulation and control starting from real demands of crop bodies are achieved, the consistency of crop quality and the resource utilization efficiency are effectively improved, and self-learning and predictive prevention and control capabilities are achieved.

The invention provides a remote monitoring system for seedling cultivation, and belongs to the technical field of remote monitoring, and the system comprises a position analysis module which is used for carrying out the rough segmentation of a terrain structure of a seedling planting region and the extraction of growth good and bad positions; the deployment module is used for performing good and bad cutting on the segmented slope surface and the segmented plane to obtain a plurality of sub-cut surfaces and deploying a sensor group and an intelligent control group; the control end is used for capturing a multi-dimensional influence vector of the nursery stock planting area in real time based on a whole-process working camera deployed in the nursery stock planting area, triggering a monitoring condition to newly add a temporary moment, controlling a corresponding sub-cutting surface to carry out newly-added monitoring for one time, and meanwhile, according to a delay attribute and an influence attribute of the triggering monitoring condition, controlling the corresponding sub-cutting surface to carry out newly-added monitoring for one time; updating the monitoring subset of each sub cutting surface; and carrying out nursery stock growth analysis on the multi-dimensional monitoring data to determine a control instruction aiming at the corresponding sub-cutting surface, and issuing the control instruction. And fine management of seedling cultivation is ensured.

The invention relates to the technical field of fungus and vegetable symbiotic square cabin equipment, in particular to a zero-carbon energy-saving fungus and vegetable symbiotic intelligent square cabin. The zero-carbon energy-saving fungus and vegetable symbiotic intelligent square cabin comprises a square cabin main frame and a light-transmitting roof erected on the top of the square cabin main frame, and polyurethane heat preservation plates are arranged on the periphery of the square cabin main frame; the photovoltaic unit used for supplying power to the whole shelter is installed on the light-transmitting roof; the temperature control unit is used for controlling the internal environment of the shelter and is mounted on the shelter main frame; a plurality of cultivation units used for fungus and vegetable symbiotic planting are arranged in the shelter main frame in an array mode; the main control cabinet used for conducting intelligent regulation and control on operation of the whole shelter is arranged in the shelter main frame, and the fungus and vegetable symbiotic intelligent shelter has the advantages that the fungus and vegetable production characteristic is fully utilized, the space is reasonably utilized, and the yield of vegetables and edible fungi is increased.

The invention discloses a seedling raising device for forestry engineering afforestation, and relates to the technical field of forestry seedling raising, the seedling raising device comprises a seedling raising box and a bottom plate, the seedling raising box and the bottom plate are fixedly connected, the inner side of the seedling raising box is fixedly connected with a liquid conveying rod, and the outer side of the liquid conveying rod is symmetrically and fixedly connected with seedling raising tanks; the liquid conveying rod and the seedling culture tank are jointly provided with a spiral permeation ventilation seedling culture assembly, the side, close to the bottom plate, of a push-out plate is movably connected with a plurality of tooth blocks, the side, close to the seedling culture box, of the bottom plate is movably connected with a servo motor, a liquid conveying groove is communicated with a spiral liquid conveying pipe, and a nutrient solution flows into the inner side of the spiral liquid conveying pipe from the inner side of the liquid conveying groove. A plurality of vent holes are formed between the spiral liquid conveying pipe and the annular partition plate, a servo motor is started to drive a gear to rotate, the gear rotates to drive a tooth block to move back and forth in the vertical direction, the tooth block moves to push a push-out plate to move back and forth in the vertical direction, and the lower portion of the seedling culture tank is movably connected with a liquid discharging pipe.

The present invention belongs to the technical field of organic fertilizer processing and discloses a water-fertilizer integrated machine. The water-fertilizer integrated machine includes a grinding device and a solid-liquid separation device. The grinding device includes a feed hopper, a grinding table and a receiving hopper. The receiving hopper is provided with a liquid inlet and a solid-liquid material outlet. The solid material enters the grinding table through the feed hopper and is ground by the grinding table. The liquid enters through the liquid inlet and mixes with the solid material to form a solid-liquid material, which then flows out from the solid-liquid material outlet. One end of the solid-liquid separation device is connected to the solid-liquid material outlet. The solid-liquid material is filtered by the solid-liquid separation device to form a primary filtered material and a primary separated material. The water-fertilizer integrated machine can grind solid fertilizer particles and form solid-liquid fertilizer that meets irrigation requirements, thereby realizing water-fertilizer integrated irrigation.

Facility layouts and configurations for an automated crop production system for controlled environment agriculture. In particular implementations, the core of the facility comprises a controlled growth environment and a central processing system. The controlled growth environment includes systems for exposing crops housed in modules, such as grow towers, to controlled environmental conditions. The central processing system may include various stations and functionality both for preparing crop-bearing modules to be inserted in the controlled growth environment, for harvesting crops from the crop-bearing modules after they have been extracted from the controlled growth environment, and for cleaning or washing crop-bearing modules for re-use. The controlled growth environment may include vertical farming structure having vertical grow towers and associated conveyance mechanisms for moving the vertical grow towers along one or more grow lines. The conveyance mechanisms may include a return transfer mechanism that creates a return or u-shaped path for each grow line.

The present invention relates to an inflatable greenhouse for a smart farm, and more particularly, to an inflatable greenhouse for a smart farm, the inflatable greenhouse comprising: a wall member (10) and a ceiling member (20) constituting the outer shape of the greenhouse; crop cultivation jars (30) disposed in layers inside the wall member (10); a planting sheet (40) which covers the crop cultivation jar (30) in a separated state; the water supply device (50) and the lighting device (60) are used for providing conditions needed by growth of crops planted in the planting pieces (40), and at least the wall body component (10) and the crop cultivation jars (30) are formed by double-wall fabrics or inflation pipes which construct a three-dimensional frame through compressed air.

The invention discloses a plateau pepper growth environment regulation and control integrated system based on multi-source data fusion, and relates to the field of plateau pepper auxiliary planting, and the integrated system is configured to be a closed cultivation device integrating environment perception, data fusion analysis and multi-factor cooperative regulation and control. The closed cultivation device comprises a cultivation bin body, an environment regulation and control module, a visual inspection module and a directional deinsectization module, the inner side of the cultivation bin body is divided into a plant growth regulation and control chamber and an equipment integration chamber which are adjacently arranged up and down through a transverse partition plate, and multiple rows of pepper planting modules distributed in the longitudinal direction are arranged on the inner side of the plant growth regulation and control chamber; according to the integrated system, environment perception, data fusion analysis and multi-factor cooperative regulation and control functions are integrated into the closed cultivation device, the visual inspection module is used for dynamically obtaining the plant growth state and pest and disease damage information, and the directional deinsectization module achieves precise deinsectization; and full-period stable control and multi-factor dynamic collaborative optimization of the plateau pepper growth environment can be realized.

The utility model discloses a cotton dry-sowing wet-out irrigation device which comprises a main pipe, an installation frame is fixedly installed above the main pipe, a water inlet pipe is fixedly installed above the installation frame, a plurality of sets of water outlet pipes distributed at equal intervals are arranged on the main pipe, an installation disc is arranged on the installation frame, and two sets of symmetrically-distributed filtering frames are embedded in the installation disc. The mounting disc is rotationally connected with the mounting frame through a mounting shaft, the mounting shaft is sleeved with a first gear, a first rack is slidably mounted in the mounting frame, a fixing frame is slidably mounted on the mounting frame, and a cleaning brush is arranged in the fixing frame; the installation disc is matched with the two sets of symmetrically-distributed filtering frames, particulate matter impurities contained in a water and fertilizer mixture entering the main pipe through the water inlet pipe are filtered, and the possibility that the irrigation device is blocked by the particulate matter impurities is reduced; and through the arranged cleaning brush, automatic cleaning of impurities attached to the used filter frame is realized.

The utility model relates to the technical field of seedling culture, in particular to a rice seedling culture device which comprises a main frame body, a plurality of layers of culture platforms are erected on the main frame body; a plurality of groups of seedling culture liquid storage boxes which are arranged at intervals are arranged on the culture platform along the horizontal direction, and a plurality of seedling culture baskets are arranged on the seedling culture liquid storage boxes; and a light supplementing lamp over against the seedling culture basket is arranged above each layer of culture platform. Through the design of multiple layers of culture platforms, a main liquid conveying pipe, a sub liquid conveying pipe, a liquid storage tank, a conveying pump and the like on the main frame body, accurate conveying and continuous supply of a nutrient solution of the rice seedling culture device are achieved. Therefore, the rice seedlings can obtain sufficient and balanced nutrition support, and the culture efficiency and the growth quality of the seedlings are improved.

The utility model belongs to tea planting equipment field, concretely is a kind of tea planting fertilizing device, including trolley, the side fixed mounting of trolley top is equipped with handle, the middle part of handle is fixedly installed with horizontal plate, the middle part of horizontal plate top is fixedly installed with electric telescopic handle, the fixed mounting of electric telescopic handle end and located horizontal plate bottom is equipped with L type support seat, the side fixed mounting of L type support seat top is equipped with driving motor, the surface of driving motor output is equipped with driving wheel, the inner wall of driving wheel and driving motor output surface are all provided with recess, the inside fixed mounting of recess is equipped with clamping key. Through the structural design of electric telescopic handle, L type support seat, driving motor, driving wheel, and through the mutual cooperation between structure, the function of driving is realized, so it can be directly converted into the rotary power of driving wheel by driving motor output torque, auxiliary trolley advances, to improve the efficiency of fertilization.

The invention provides an intelligent drip irrigation and fertilization device for a garden green belt. The intelligent drip irrigation and fertilization device mainly comprises a supply mechanism, a conveying mechanism and a plurality of drip irrigation mechanisms. The supply mechanism is used for providing purified water and fertilizer liquid; the conveying mechanism is connected with the supply mechanism and is arranged in the green belt; the plurality of drip irrigation mechanisms are detachably arranged on the conveying mechanism, and the conveying mechanism is used for transferring the purified water and the fertilizer liquid provided by the supply mechanism to the plurality of drip irrigation mechanisms; the drip irrigation mechanism is used for mixing the purified water and the fertilizer liquid into irrigation liquid and adjusting the preset mixing proportion of the purified water and the fertilizer liquid and the preset distribution proportion of the different stratums according to the soil water potential of the different stratums in the green belt so as to achieve layered intelligent water supply. The drip irrigation mechanism serves as a modularized unit, and water and fertilizer can be pertinently supplemented to the upper soil and the lower soil in a local area according to the water potential and requirements of the upper soil and the lower soil. The problem of contradiction between salt accumulation on the upper layer of the garden green belt and long-term recessive water and fertilizer shortage of the lower layer is solved.

Disclosed is an actuator for actuation of a fluid dispense valve in a pressurized fluid powered fluid dispensing device. The actuator comprising structure to generate a pressure differential between a first zone and a second zone. The zones being adjacent a valve member of the fluid dispense valve of the device such that upon generation of the pressure differential the valve member is moved from the zone of relatively higher pressure towards the zone of relatively lower pressure such that the valve is opened.