IRRIGATION DEVICE, IRRIGATION SYSTEM, AND IRRIGATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide an irrigation device, an irrigation system and an irrigation method each constructing appropriate soil moisture environments such as decreased supply of useless irrigation water, prevention of root rot of plants and withering of plants, and further prevention of salt damage.

SOLUTION: This irrigation device includes a constant water pressure generating device 10 and a porous hose 20 connected to the constant water pressure generating device 10 and buried in soil. The constant water pressure generating device 10 constantly controls the water level of a container 11 and generates constant water pressure. Water held in the porous hose 20 passes micropores of the surrounding wall of the porous hose 20 and is supplied to soil by suction force of soil as shown by an arrow a1. Water only for moisture holding capacity which soil of a root group area 30 on a soil water infiltration suppressing layer 40 has is held in soil, and thereafter, water only for being absorbed by roots of a plant 70 is supplied from the porous hose 20 to the root group area 30.

COPYRIGHT: (C)2012,JPO&INPIT