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タイトル: 稲わら投入方法が土壌浸透水からの窒素除去に及ぼす影響
その他のタイトル: The way rice straw input into soil affects the nitrogen removal from soil
著者: 川西, 琢也 link image link image
姜, 志恒
稲垣, 道弘
清水, 宣明 link image
林, 良茂 link image
Kawanishi, Takuya
Jiang, Zhiheng
Inagaki, Michihiro
Shimizu, Nobuaki
Hayashi, Yoshishige
発行日: 1997年
出版社(者): 日本水環境学会 = Japan Society on Water Environment
雑誌名: 水環境学会誌 = Journal of Japan Society on Water Environment
ISSN: 0916-8958
巻: 20
号: 5
開始ページ: 347
終了ページ: 351
キーワード: nitrogen removal
soil infiltration treatment
rice straw
solid organic matter
抄録: In this study we investigated the effect of the way inputting rice straw on nitrogen removal efficiency. We prepared 52 mm inner diameter and 400 mm height soil columns, and input rice straw by three different ways as follows: 1) mono-layered, 2) cutting rice straw into 20-30 mm pieces and then mix it with soil, 3) milling rice straw into under 1 mm pieces and the mix it with soil. We supplied potassium nitrate solution of 50 mg-N·l-1 to these columns at the rate of 200 ml·d-1. The column with rice straw input mono-layered showed steady nitrogen removal, the nitrate nitrogen concentration of its outflow did never exceed 20 mg·l-1 during 44 days of operation. On the other hand, other columns reveals poor nitrogen removal. The nitrate nitrogen concentration of their effluents came as high as 40 mg·l-1 in ten days. We concluded that if we use rice straw as a carbon source for denitrification to remove nitrogen from soil percolate, it will be better that rice straw be put into soil as mono-layer, not mixed with soil.
URI: http://hdl.handle.net/2297/24738
関連URI: http://www.jswe.or.jp/
資料種別: Journal Article
権利関係: Copyright (c) 2008 日本水環境学会
版表示: publisher

このアイテムを引用あるいはリンクする場合は次の識別子を使用してください。 http://hdl.handle.net/2297/24738



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