A perforated subirrigation and drainage pipe includes a pipe body and a permeation irrigation inner pipe. The permeation irrigation inner pipe is integrally formed with the pipe body and disposed at a top of an interior of the pipe body along a longitudinal direction thereof; multiple irrigation perforations, distributed along a longitudinal direction of the permeation irrigation inner pipe, are provided on a pipe wall of a bottom thereof; and an opening is provided on a pipe wall of a bottom of the pipe body; two flow guide baffles are respectively located at two sides of the opening and on an inner wall of the pipe body; a first irrigation and drainage channel is formed between each flow guide baffle and an outer wall of the permeation irrigation inner pipe, between each flow guide baffle and the inner wall of the pipe body, and between the two flow guide baffles.

A perforated subirrigation and drainage pipe includes a pipe body and a permeation irrigation inner pipe. The permeation irrigation inner pipe is integrally formed with the pipe body and disposed at a top of an interior of the pipe body along a longitudinal direction thereof; multiple irrigation perforations, distributed along a longitudinal direction of the permeation irrigation inner pipe, are provided on a pipe wall of a bottom thereof; and an opening is provided on a pipe wall of a bottom of the pipe body; two flow guide baffles are respectively located at two sides of the opening and on an inner wall of the pipe body; a first irrigation and drainage channel is formed between each flow guide baffle and an outer wall of the permeation irrigation inner pipe, between each flow guide baffle and the inner wall of the pipe body, and between the two flow guide baffles.

A method and system for use therein for providing O.sub.2 and H.sub.2 gases directly to the soil proximal to the roots of plants via electrolysis is described. The method employs at least one electrolyzer disposed adjacent to, or inline with, the irrigation waterline of the plant grow operation to facilitate the introduction of the gases to the soil. A power source is used to provide the electrolytic conversion, and gases remain in a micro-bubbled form to flow through the waterline more easily to the plants where they are needed the most. A venturi is used to channel the dissolved gases in the waterline from the electrolyzer in embodiments having an external HyGrO unit. The inline embodiment electrolyzes the water without need of a venturi to reintroduce the gases to the waterline.

A method and system for use therein for providing O.sub.2 and H.sub.2 gases directly to the soil proximal to the roots of plants via electrolysis is described. The method employs at least one electrolyzer disposed adjacent to, or inline with, the irrigation waterline of the plant grow operation to facilitate the introduction of the gases to the soil. A power source is used to provide the electrolytic conversion, and gases remain in a micro-bubbled form to flow through the waterline more easily to the plants where they are needed the most. A venturi is used to channel the dissolved gases in the waterline from the electrolyzer in embodiments having an external HyGrO unit. The inline embodiment electrolyzes the water without need of a venturi to reintroduce the gases to the waterline.

A drip emitter is provided for delivering irrigation water from a supply tube to an emitter outlet at a reduced and relatively constant flow rate. Water enters the emitter through a first inlet and proceeds into a first chamber. When the water pressure is above a predetermined level, a one-directional valve opens to allow fluid flow past the first chamber, through a tortuous path flow channel, and through an emitter outlet. A second inlet is used to compensate for water pressure fluctuations in the supply tube to maintain output flow at a relatively constant rate. Water enters the second inlet and presses a flexible diaphragm toward a water metering surface to provide pressure-dependent control of the output flow. A copper member is mounted to the emitter over the emitter outlet to prevent plant root intrusion into the emitter outlet.

A drip emitter is provided for delivering irrigation water from a supply tube to an emitter outlet at a reduced and relatively constant flow rate. Water enters the emitter through a first inlet and proceeds into a first chamber. When the water pressure is above a predetermined level, a one-directional valve opens to allow fluid flow past the first chamber, through a tortuous path flow channel, and through an emitter outlet. A second inlet is used to compensate for water pressure fluctuations in the supply tube to maintain output flow at a relatively constant rate. Water enters the second inlet and presses a flexible diaphragm toward a water metering surface to provide pressure-dependent control of the output flow. A copper member is mounted to the emitter over the emitter outlet to prevent plant root intrusion into the emitter outlet.

Apparatuses and methods for collecting and irrigating water for plant growth in dry regions. Exemplary apparatus has appearance of a plant having leaves and stems, and operates same way plants grow and irrigate rain water and/or dew. Includes at least one water harvesting device for condensing moisture in air and collecting yield water. Device includes at least one device-body having a hydrophobic shell, and an internal-body-core surrounded by and enclosed within the hydrophobic shell; and plurality of condensation-protrusions disposed on the hydrophobic shell, each having internal-core and hydrophilic-shell surrounding and enclosing internal core. Device-body internal-body-core, in an integral manner, continuously extends to device-body hydrophobic shell and into (within) hydrophilic shell of each condensation-protrusion. When condensation-protrusions are cooler than moist air, hydrophilic-shell condenses and extracts moisture from air, becoming harvested water. When hydrophilic-shell is saturated, water flows on hydrophobic shell surface, and irrigates flowing water towards at least one target location.

Apparatuses and methods for collecting and irrigating water for plant growth in dry regions. Exemplary apparatus has appearance of a plant having leaves and stems, and operates same way plants grow and irrigate rain water and/or dew. Includes at least one water harvesting device for condensing moisture in air and collecting yield water. Device includes at least one device-body having a hydrophobic shell, and an internal-body-core surrounded by and enclosed within the hydrophobic shell; and plurality of condensation-protrusions disposed on the hydrophobic shell, each having internal-core and hydrophilic-shell surrounding and enclosing internal core. Device-body internal-body-core, in an integral manner, continuously extends to device-body hydrophobic shell and into (within) hydrophilic shell of each condensation-protrusion. When condensation-protrusions are cooler than moist air, hydrophilic-shell condenses and extracts moisture from air, becoming harvested water. When hydrophilic-shell is saturated, water flows on hydrophobic shell surface, and irrigates flowing water towards at least one target location.

The disclosed device includes a water storage container, an evaporation cover, a funnel, an indicator rod and a float. The water storage container has an evaporation cover. The evaporation cover is a gas permeable structure. A funnel is connected to the evaporation cover and an indication is provided in the leakage tube of the funnel. A rod. A float is connected to the lower end of the indicator rod and the float drives the indicator rod to indicate the water level in the water storage container. The method is as follows: the water storage container and the evaporation cover are buried in the soil of the plant root, and the water is filled into the water storage container through the funnel. The water in the water container naturally evaporates into the soil through the evaporation hood, which maintains the water in the soil to maintain the survival of the plant.

The disclosed device includes a water storage container, an evaporation cover, a funnel, an indicator rod and a float. The water storage container has an evaporation cover. The evaporation cover is a gas permeable structure. A funnel is connected to the evaporation cover and an indication is provided in the leakage tube of the funnel. A rod. A float is connected to the lower end of the indicator rod and the float drives the indicator rod to indicate the water level in the water storage container. The method is as follows: the water storage container and the evaporation cover are buried in the soil of the plant root, and the water is filled into the water storage container through the funnel. The water in the water container naturally evaporates into the soil through the evaporation hood, which maintains the water in the soil to maintain the survival of the plant.