| Effects of Carboxymethylcelluloses （CMC） on Some Hydraulic Properties of Sandy Soil |
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| 作者姓名： | ANDRY Henintsoa INOUE Mitsuhiro MORITANI Shigeoki UZOMA Kingsley Chinyere |
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| 作者单位： | ANDRY Henintsoa,INOUE Mitsuhiro,MORITANI Shigeoki(Arid Land Research Center, Tottori University, Japan);UZOMA Kingsley Chinyere(Arid Land Research Center, Tottori University, Japan;The United Graduate School of Agricultural Science, Tottori University, Japan) |
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| 基金项目： | Supported by JSPS Fellowship Program |
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| 摘 要： | The property of hydrophilic polymers capable absorbing huge volumes of water led to many practical applications of these new materials in arid regions for improving the water retention in sandy soils. Effects of four carboxymethylcelluloses (CMC), mixed at various rates with the sandy soil, on the water-holding capacity and hydraulic conductivity (KS ) when leached with distilled water (simulating rain), tap water, and saline water were evaluated. The maximum water absorption of CMCs ranged between 80 and 100 kg ? kg-1 of polymer; however, the absorbent swelling capacity decreased significantly with increasing the salt concentration in the solution. The water absorption capacity of CMCs decreased significantly when incorporated in the sandy soil compared to that of the absorbent alone. Application of CMC increased significantly the available water content up to 3 ± 0.5 times. All soils treated with CMCs showed a significant lower in KS compared to the control soil. Meanwhile, KS was found increased with increasing the salt concentration in the leaching solution. This understanding of characteristics of the absorbents and the interactions among absorbents, soil, and irrigation water quality would be of help in water management of sandy soil.
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| 关 键 词： | sandy soil water quality carboxymethylcelluloses hydraulic property |
Effects of Carboxymethylcelluloses (CMC) on Some Hydraulic Properties of Sandy Soil |
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| ANDRY Henintsoa,INOUE Mitsuhiro,MORITANI Shigeoki,UZOMA Kingsley Chinyere.Effects of Carboxymethylcelluloses (CMC) on Some Hydraulic Properties of Sandy Soil[J].Journal of Northeast Agricultural University,2010,17(4):30-36. |
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| Authors: | ANDRY Henintsoa INOUE Mitsuhiro MORITANI Shigeoki UZOMA Kingsley Chinyere |
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| Institution: | 1. Arid Land Research Center, Tottori University, Japan
2. Arid Land Research Center, Tottori University, Japan;The United Graduate School of Agricultural Science, Tottori University, Japan |
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| Abstract: | The property of hydrophilic polymers capable absorbing huge volumes of water led to many practical applications of these new materials in arid regions for improving the water retention in sandy soils. Effects of four carboxymethylcelluloses (CMC), mixed at various rates with the sandy soil, on the water-holding capacity and hydraulic conductivity (KS ) when leached with distilled water (simulating rain), tap water, and saline water were evaluated. The maximum water absorption of CMCs ranged between 80 and 1... |
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| Keywords: | sandy soil water quality carboxymethylcelluloses hydraulic property |
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