| PAA-atta复合保水剂对土壤物理性质的影响 |
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| 引用本文： | 刘瑞凤,杨红善,李安,王爱勤.PAA-atta复合保水剂对土壤物理性质的影响[J].土壤通报,2006,37(2):231-235. |
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| 作者姓名： | 刘瑞凤 杨红善 李安 王爱勤 |
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| 作者单位： | 1. 中国科学院,兰州化学物理研究所,甘肃,兰州,730000;中国科学院,研究生院,北京,100039
2. 中国科学院,兰州化学物理研究所,甘肃,兰州,730000 |
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| 基金项目： | 国家科技攻关项目;中国科学院"西部之光"人才培养计划 |
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| 摘 要： | 在合成以丙烯酸和凹凸棒土为原料的有机无机复合保水剂的基础上,本文对比考察了PAA-atta复合保水剂与单纯PAA保水剂对土壤物理性质的影响。结果发现,随着2种保水剂施用量的增加,土壤平均含水量、pH值、>0.25mm团聚体含量及阳离子交换量也逐渐增大。相同用量下,保水剂粒径越小,土壤含水量和>0.25mm团聚体含量也越大,但PAA-atta复合保水剂对土壤物理性质改善效果明显好于单纯PAA保水剂。
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| 关 键 词： | 保水剂 土壤团聚体 容重 阳离子交换量 |
| 文章编号： | 0564-3945(2006)02-0231-05 |
| 修稿时间： | 2004年12月15 |
Effects of Polyacrylic/attapulgite Superabsorbent Composition on Soil Physical Properties |
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| LIU Rui-feng,YANG Hong-shan,LI An,WANG Ai-qin.Effects of Polyacrylic/attapulgite Superabsorbent Composition on Soil Physical Properties[J].Chinese Journal of Soil Science,2006,37(2):231-235. |
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| Authors: | LIU Rui-feng YANG Hong-shan LI An WANG Ai-qin |
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| Abstract: | In this paper,polyacrylic/attapulgite(PAA-atta)superabsorbents were prepared by grafting crylic acid onto attapulgite clay.The effects of PAA-atta superabsorbent composition and PAA superabsorbent on soil physical properties were investigated.The results showed that soil water content,pH value,>0.25mm aggregates and cation exchange capacity increased with increasing concentration of superabsorbent.The soil water content and >0.25mm aggregate increased with decreasing particle size of superabsorbent in the same concentration.The PAA-atta superabsorbent composite for improving of soil physical properties was better than PAA superabsorbent. |
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| Keywords: | Superabsorbent Soil aggregate Bulk density Cation exchange capacity |
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