The present disclosure provides a system for accelerating salt leaching and drainage of soil based on a negative pressure, and relates to the technical field of soil improvement. The system includes a concealed pipe. The concealed pipe is communicated with a negative pressure chamber. The negative pressure chamber is communicated with an air extracting pump through an air extraction port, and the air extracting pump is configured to evacuate the negative pressure chamber. In the present disclosure, the concealed pipe is arranged, the structure of the concealed pipe is improved, and the negative pressure chamber is arranged between the air extracting pump and the concealed pipe. By evacuating the negative pressure chamber to form a negative pressure area around the concealed pipe for field drainage, the drainage of water in soil is accelerated by the pressure difference, thereby improving the efficiency of drainage and salt leaching per unit time.

An irrigation system comprises an irrigation controller that receives user input and provides a power signal and command and message data to an encoder. The encoder encodes the command and message data onto the power signal to provide a data encoded power waveform that is sent over a two-wire path. The irrigation system further comprises one or more decoders in communication with the two-wire path to receive the data encoded power waveform and one or more irrigation valves in communication with the one or more decoders. The data encoded power waveform provides power to the decoders and the decoders decode the command and message data from the data encoded power waveform to control the irrigation valves according to the user input.

An irrigation system comprises an irrigation controller that receives user input and provides a power signal and command and message data to an encoder. The encoder encodes the command and message data onto the power signal to provide a data encoded power waveform that is sent over a two-wire path. The irrigation system further comprises one or more decoders in communication with the two-wire path to receive the data encoded power waveform and one or more irrigation valves in communication with the one or more decoders. The data encoded power waveform provides power to the decoders and the decoders decode the command and message data from the data encoded power waveform to control the irrigation valves according to the user input.

The present invention relates generally to a system and method for detecting and adjusting the position of an irrigation span. More particularly, the present invention provides a system and method for detecting and removing deflection stresses from irrigation spans caused by corner arm positioning.

A drip irrigation emitter includes a cover member, a base member, and a silicone-based membrane containing ferric oxide, the membrane=e located between the two members. The membrane includes liquid silicone rubber (LSR) material and ferric oxide. The ferric oxide in volumetric percentage ranges from about 0.1% to about 0.5% of the overall volume of the LSR material.

An emitter provided with: a water intake part that communicates with the interior of a tube when the emitter is joined to the tube; a pressure-reducing flow channel part for forming a pressure-reducing flow channel; a flow rate adjustment part for adjusting the flow rate of the irrigation liquid in accordance with the pressure of the irrigation liquid inside the tube; and a discharge part that faces a discharge opening. The flow rate adjustment part has: a base; an accommodation part that accommodates the base; a communication hole that opens to the base and communicates with the discharge part; and a diaphragm part that is flexible and is disposed so as to be separated from the base, the diaphragm part approaching the base when the pressure of the irrigation liquid inside the tube is received.

An emitter provided with: a water intake part that communicates with the interior of a tube when the emitter is joined to the tube; a pressure-reducing flow channel part for forming a pressure-reducing flow channel; a flow rate adjustment part for adjusting the flow rate of the irrigation liquid in accordance with the pressure of the irrigation liquid inside the tube; and a discharge part that faces a discharge opening. The flow rate adjustment part has: a base; an accommodation part that accommodates the base; a communication hole that opens to the base and communicates with the discharge part; and a diaphragm part that is flexible and is disposed so as to be separated from the base, the diaphragm part approaching the base when the pressure of the irrigation liquid inside the tube is received.

A sprinkler has an internal cavity where fluid is configured to flow through the internal cavity along a flow path extending from an inlet to an outlet. A sprinkler head is in fluid communication with the internal cavity of the body and is rotatable about a sprinkler head axis. A sprinkler power assembly generates electrical power for diagnostics of the sprinkler, such as a motion sensor oriented toward the sprinkler head. The motion sensor is configured to emit a motionless signal upon the sprinkler head ceasing to rotate about the sprinkler head axis.

A sprinkler has an internal cavity where fluid is configured to flow through the internal cavity along a flow path extending from an inlet to an outlet. A sprinkler head is in fluid communication with the internal cavity of the body and is rotatable about a sprinkler head axis. A sprinkler power assembly generates electrical power for diagnostics of the sprinkler, such as a motion sensor oriented toward the sprinkler head. The motion sensor is configured to emit a motionless signal upon the sprinkler head ceasing to rotate about the sprinkler head axis.

An irrigation device is provided with an indicator that may be converted to indicate a condition, such as use with non-potable fluid. The irrigation device includes an inlet, and outlet, and a body defining a flow path from the inlet to the outlet. It further includes a cover with a removable section, and an indicator at least partially under the removable cover. The indicia indicate a condition of the irrigation device, such as being used with non-potable fluid. In one state, the cover is intact and the indicia are not exposed. In another state, the removable section has been removed and the indicia are at least partially exposed.