The present disclosure provides a distribution method and a distribution system for greenspace irrigation water of a smart city based on an Internet of Things. The method includes obtaining historical monitoring information of a plurality of greenspaces in a target area within a historical time period from the urban monitoring object platform, determining historical growth information of the plurality of greenspaces within the historical time period based on the historical monitoring information of the plurality of greenspaces, determining target irrigation parameters of each greenspace in a first future time period based on the historical growth information, generating an irrigation control instruction for irrigating each greenspace based on target irrigation parameters, and sending the irrigation control instruction to an irrigation object platform through a sensor network platform, an irrigation object platform being configured to irrigate the each greenspace in response to the irrigation control instruction.

Several embodiments provide wireless irrigation system and related methods. In one implementation, an irrigation system includes a plurality of valves; a plurality of solenoids; a plurality of circuits, at least one circuit in a circuit housing attached at least partially to a dedicated solenoid housing of a respective one of the plurality of solenoids; a plurality of wireless transceivers, at least one wireless transceiver in the circuit housing attached at least partially to the dedicated solenoid housing of the respective one of the plurality of solenoids and configured to wirelessly communicate via a communication network; and the communication network comprising the plurality of wireless transceivers for communication with the plurality of solenoids.

Use of an adaptogen for the treatment and/or control and/or prevention of a disease or infestation of a plant by application of said adaptogen to the plant, wherein: (i) the adaptogen is Blad or a variant thereof and the location of the disease or infestation is in a region of the plant which is different to the region where the adaptogen is applied; or (ii) the adaptogen is skopobiota which is used to inoculate said plant or part thereof;
and preferably said adaptogen is in the form of a composition.

A system and method of irrigation control calculates a predicted soil moisture value based that is compared to low moisture threshold. If the predicted soil moisture value is a value below the low moisture threshold value, the next irrigation cycle or scheduled irrigation operation is allowed to proceed or otherwise activated. The predicted soil moisture value may be calculated by adjusting a current soil moisture value by a historical adjustment factor based on negative net changes in soil moisture values.

A method for remedying sandy land by using a simulated loam substrate spray-seeding technology includes: first, carrying out a sand-fixing treatment to lay a metal mesh in sandy land, the metal mesh being fixed to the surface of the sandy land by a sand-fixing pile; second, spray-seeding a seed into the sandy land by simulated loam substrate spray-seeding; and finally, after spray-seeding, carrying out maintenance management, including adding a protective plate around the metal mesh, covering with a non-woven fabric, watering, fertilizing, reseeding, and post-monitoring. The present invention adopts a two-layer spray-seeding method, and rapidly simulates a loam substrate suitable for plant growth by bionics; the simulated loam substrate having good water retention capacity (conducive to a higher germination rate of seed), root development, microbial activity, nutrient transformation, and plant growth and development. With less investment and having a quick effect, large-scale sand control is provided.

The present invention addresses the problem of providing: an emitter that can be placed within a tube without aligning discharge parts of the emitter, is reduced in thickness while having a function for adjusting the flow rate, and is less likely to inhibit irrigation fluid flow. An emitter for solving the above problem is joined to the inner wall surface of a tube through which an irrigation fluid flows, and is used to discharge the irrigation fluid within the tube from a discharge port to the outside of the tube. The emitter has: at least one intake part; one discharge amount adjustment part; one discharge groove; and a plurality of discharge parts. The plurality of discharge parts are disposed symmetrically on both sides of the center of the emitter in a plan view.

A drip irrigation treatment device, which comprises a water storage tank, wherein a partition plate is arranged in the water storage tank and divides the interior of the water storage tank into a conveying cavity and a purifying cavity, one side of the conveying cavity and one side of the purifying cavity are jointly connected with a first water conveying mechanism, a protection box is arranged on one side of the water storage tank, a filter box is arranged in the protection box, one side of the upper end of the protection box is connected with a sewage conveying pipe, the lower end of the sewage conveying pipe corresponds to the filter box, a filtering mechanism is arranged in the filter box, a buffer moving mechanism is arranged on the periphery of the filter box, and a rotating mechanism is arranged on one side in the protection box.

A rotating sprinkler for irrigation is disclosed. The sprinkler can include a stator spaced upstream from a turbine to form a mixing region therebetween. The stator can define a primary flow path and a bypass flow path. The primary flow path is aligned relative to the plurality of blades so that water exiting the primary flow path traverses the mixing region and impinges on the plurality of blades at a first angle of attack. The bypass flow path is aligned relative to the primary flow path so that water exiting the bypass flow path intersects the water exiting the primary flow path in the mixing region to cause the water exiting the primary flow path to impinge on the plurality of blades at a second angle of attack. The sprinkler can further include a valve configured to regulate flow between the primary flow path and the bypass flow path.

Embodiments for crop-specific automated irrigation of an environmental medium and management of nutrients therein. In one aspect, operation of an irrigation apparatus can be regulated according to specific water demand of a crop. The water demand can be assessed by evaluating water content conditions of the environmental medium comprising the crop, medium characteristics, and/or nutrient delivery and transport characteristics at the medium. Regulation of operation of the irrigation apparatus can comprise control of one or more of water supply to the apparatus, positioning and/or movement of the irrigation apparatus, or configuration of sensing devices for collection of information suitable for such regulation.

A variable-flow-rate anti-clogging emitter includes an upper casing and a lower casing, where the upper casing and the lower casing are fixedly connected with each other; the upper casing has a flat top surface provided with a water outlet and a bottom surface provided with a truncated conical slot in communication with the water outlet; the lower casing includes a flow channel portion and a discharging portion, which are recessed in an upper surface of the lower casing; the flow channel portion has one end provided with multiple parallel feeding channels and an other end communicated with the discharging portion; one end of a lower surface of the lower casing is provided with an L-shaped platform; water inlets of the multiple feeding channels are arranged on a side wall of the L-shaped platform; and an elastomer flow channel is fixedly provided between the upper casing and the lower casing.