| 摘要 |
<P>PROBLEM TO BE SOLVED: To suitably apply a subirrigation system even to a slope ground without using a special water-delivery facility such as a pump. <P>SOLUTION: The subirrigation system 10 includes a water-supply pipe 12 buried in a cultivated land (100), and supplies water to the soil through the water-supply pipe 12. A plurality of grooves 20 axially aligned at intervals are formed on the inner surface side of the water-supply pipe 12, and each groove 20 includes a plurality of holes 26 disposed circumferentially at predetermined intervals. In irrigation, the water supplied from a water source (16) into the water-supply pipe 12 is divided to each groove 20 and gradually supplied to the soil through each hole 26. <P>COPYRIGHT: (C)2013,JPO&INPIT |
