Potassium-calcium exchange in five Ap soils from paddy fields and its effect on potassium concentration in soil solution

Shin-Ichiro Wada, Koji Odahara, Koji Odahara

研究成果: ジャーナルへの寄稿記事

12 引用 (Scopus)

抄録

We measured the selectivity coefficient (K V) for K-Ca exchange equilibrium as a function of K-saturation on two smectitic soils, two halloysitic soils and a soil dominated by noncrystalline aluminum silicates. The selectivity coefficients for all the soils decreased as K-saturation increased. Among the five soils, the halloysitic soils exhibited higher K Vvalues than the smectitic soils, while the K Vvalues for the soils dominated by noncrystalline aluminum silicates were comparable with those of the halloysitic soils at low K-saturation but the K Vvalues were even lower than those for the smectitic soils at higher K-saturation. Numerical simulations showed that the K concentration in the soil solution after addition of a K-salt differed significantly among the soils, depending on the exchangeable K status and K-selectivity of the soils.

元の言語英語
ページ(範囲)129-138
ページ数10
ジャーナルSoil Science and Plant Nutrition
39
発行部数1
DOI
出版物ステータス出版済み - 1 1 1993

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paddy field
soil solution
paddies
potassium
calcium
smectitic soils
soil
silicates
saturation
aluminum
effect
silicate
salts
salt

All Science Journal Classification (ASJC) codes

  • Soil Science
  • Plant Science

これを引用

Potassium-calcium exchange in five Ap soils from paddy fields and its effect on potassium concentration in soil solution. / Wada, Shin-Ichiro; Odahara, Koji; Odahara, Koji.

:: Soil Science and Plant Nutrition, 巻 39, 番号 1, 01.01.1993, p. 129-138.

研究成果: ジャーナルへの寄稿記事

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