Water intake - water intake

Japanese: 吸水きょ - きゅうすいきょ
Water intake - water intake

…In recent years, underdrains have become an especially important drainage method when field crops are introduced into paddy fields. Underdrains are used to collect water that descends by gravity into a suction pipe (the pipe and the buried trench are collectively called the suction drain) buried about 60 to 120 cm underground (Figure). In the past, suction drains were made of bamboo, gravel, brushwood, or clay pipes, but nowadays, various types of suction pipes are used, including polyvinyl chloride pipes, polyethylene pipes, corrugated pipes, mesh pipes, and clay pipes with many holes or thin slits of 1.5 to several mm in size. …

*Some of the terminology that refers to "suction drains" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…近年,水田への畑作物の導入にあたってはとくに重要な排水手段となっている。暗きょ排水は,重力で降下する水を,地下約60~120cmの深さに埋設した吸水管(この管と埋設してある溝を含めて吸水きょと称する)に集めて行う(図)。古くは竹,石礫(せきれき),そだ(粗朶),土管などが吸水きょに敷設されたが,現在では1.5~数mmの穴または細いスリットが多数ある塩化ビニル管,ポリエチレン管,コルゲート管,網状管,土管など各種の吸水管が用いられる。…

※「吸水きょ」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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