| Item type |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2010-02-05 |
| タイトル |
|
|
タイトル |
Relationship between the content of expansible 2:1 type clay minerals in paddy soils and the amount of ammonium nitrogen in the ponding water by a laboratory experiment |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
nitrogen outflow |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
ammonium adsorption |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
readily available fertilizer |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
smectite |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
vermiculite |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
ponding water |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| 著者 |
SANO, Oki
ITO, Toyoaki
SAIGUSA, Masahiko
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
From the viewpoint of ammonium-nitrogen (N) transportation from paddy fields to rivers, estimation of ammonium-N in the ponding water is important for soil management to reduce N outflow from paddy fields. The relationship between the content of expansible 2:1 type clay minerals (i.e. smectite and vermiculite) and the amount of ammonium-N in the ponding water was investigated by a laboratory incubation experiment. Eighteen soils including fifteen alluvial soils and three volcanic ash soils from northeastern Japan were used; the clay content in soils was 116-476g kg^<-1>; the content of expansible 2:1 type clay minerals in soils was 0-395g kg^<-1>. The experimental condition corresponded to the condition of paddy fields just before transplanting, where readily available N fertilizer was incorporated to plow layers (0.15m) at a rate 5g N m^<-2> as basal fertilizer and submerged water depth was 0.06m. The concentration and the amount of ammonium-N in the ponding water was 1.4-7.5mg L^<-1> and 0.08-0.45g m^<-2>. The amount of ammonium-N significantly related to the amount of clay in the calculated plow layer with a depth of 0.15m (R^2=0.42). On the other hand, the amount of expansible 2:1 type clay minerals in the calculated plow layer more strongly related to ammonium-N than the amount of clay (R^2=0.55). These results were attributed to the fact that expansible 2:1 type clay minerals have larger amount of negative charge site per clay and higher selectivity in ammonium adsorption than other clay minerals. From these results it was considered that paddy soils rich in clay fraction or expansible 2:1 type clay minerals could adsorb larger ammonium and mitigate ammonium-N runoff through the ponding water. |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Original Paper |
| 書誌情報 |
Journal of Integrated Field Science
巻 5,
p. 13-16,
発行日 2008-03
|
| ISSN |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
2433-6122 |
| 書誌レコードID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA12005506 |
| フォーマット |
|
|
内容記述タイプ |
Other |
|
内容記述 |
application/pdf |
| 著者版フラグ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 出版者 |
|
|
出版者 |
Field Science Center, Graduate School of Agricultural Science, Tohoku University |
| 資源タイプ |
|
|
内容記述タイプ |
Other |
|
内容記述 |
紀要類 |
| 登録日 |
|
|
日付 |
2010-02-05 |
|
日付タイプ |
Created |
| 公開日（投稿完了日） |
|
|
日付 |
2010-02-05 |
|
日付タイプ |
Created |
| 発行日 |
|
|
日付 |
2008-03 |
|
日付タイプ |
Created |
| フォーマット |
|
|
内容記述タイプ |
Other |
|
内容記述 |
375849 bytes |
| 著者所属 |
|
|
値 |
Field Science Center, Graduate School of Agricultural Science, Tohoku University / Field Science Center, Graduate School of Agricultural Science, Tohoku University / Field Science Center, Graduate School of Agricultural Science, Tohoku University:(Present office)Toyohashi University of Technology |
| 更新日 |
|
|
日付 |
2018-01-04 |
|
日付タイプ |
Created |
KJ00005127908.pdf (375.8 kB)
