WEKO3
アイテム
ダイズ根圏におけるAlの挙動に対する養分吸収の影響
https://repo.qst.go.jp/records/44142
https://repo.qst.go.jp/records/44142a9715d76-88ef-48d0-b9f9-1ba6125c69f1
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2006-06-05 | |||||
| タイトル | ||||||
| タイトル | ダイズ根圏におけるAlの挙動に対する養分吸収の影響 | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 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 | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
中丸, 康夫
× 中丸, 康夫× 内田, 滋夫× 中丸 康夫× 内田 滋夫 |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The effects of nutrient uptake by plant roots on the solubility of Al in volcanic ash soil were studied. The soil used was classified as Alic Meranudand, which contains a large amount of active Al. Soybean plants were grown in a greenhouse for 84 d. The concentrations of K, Ca, Mg, Na, and Al in plants and in soil solutions at different growth periods were measured. The mass flow of the elements from soil solution to the root surface was calculated from the concentrations in the soil solution and the daily transpiration of soybean. The concentrations of nutrient cations (Ca2+, K+, and Mg2+) in the soil solution decreased as the soybean plants grew. On the other hand, the concentrations of Al3+ increased; the value of 10 micro-mol(+) L-1 in the vegetative growth stage increased to 25 micro-mol(+) L-1 in the podding stage. The concentrations of Al3+ negatively correlated with the concentrations of nutrient cations (i.e. Ca2+ and K+). For soil solutions collected from unplanted pots, no correlations between the concentrations of Al and the concentrations of nutrient cations were observed. It was assumed that soybean roots released H+ with the uptake of nutrient cations, and the H+ caused the pH decrease near the roots, thus, the Al was desorbed from the soil solid phase. Although the pH values of the bulk soil were 6.0-6.2 during the soybean growth, exchangeable Al content was increased after the cultivation. Although the ratio of mass flow to actual uptake of Al was 1.1 at the vegetative growth stage, it increased to 2.1 at the podding stage. This shows that the mass flow of Al was in excess of what is absorbed by the plants, thus the Al accumulated near the roots at the podding stage. These results provide useful information on the mechanisms of Al toxicity and tolerance in plants. |
|||||
| 書誌情報 |
日本土壌肥料学雑誌 巻 76, 号 1, p. 15-20, 発行日 2005-01 |
|||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0029-0610 | |||||
