| PAM-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,张俊平,郑欣,王爱勤.PAM-atta复合保水剂对土壤物理性质的影响[J].土壤,2006,38(1):86-91. |
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| 作者姓名： | 刘瑞凤 张俊平 郑欣 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,兰州,730000;中国科学院研究生院,北京,100049
2. 中国科学院兰州化学物理研究所,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： | 在研制开发出耐盐型丙烯酰胺/凹凸棒黏土复合保水剂(PAM-atta)的基础上,研究了该复合保水剂对土壤物理性质的影响。结果表明:PAM-atta复合保水剂可显著提高土壤含水量、>0.25mm团聚体含量、孔隙度以及阳离子交换量,降低土壤体积质量(容重)。同时PAM-atta复合保水剂粒径越小,对土壤体积质量、团聚体等的作用效果也越明显。与CK相比,施用120目的保水剂可提高土壤中>0.25mm团聚体含量达13.3%~16.2%。
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| 关 键 词： | 复合保水剂 凹凸棒黏土 土壤团聚体 体积质量(容重) 阳离子交换量 |
Effects of Water-preserving Composite of Polyacylamide/Attapulgite on Soil Physical Properties |
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| Liu Ruifeng,Zhang Junping,Zheng Xin and Wang Aiqin.Effects of Water-preserving Composite of Polyacylamide/Attapulgite on Soil Physical Properties[J].Soils,2006,38(1):86-91. |
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| Authors: | Liu Ruifeng Zhang Junping Zheng Xin and Wang Aiqin |
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| Institution: | 1. Lanzhou Institute of Chemical Physics, ChineseAcademy of Sciences, Lanzhou 730000, China; 2. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | A new water-preserving composite of polyacylamide/attapulgite (PAM-atta) was prepared by combining acylamide with attapulgite clay. Effects of PAM-atta on soil physical properties were investigated. The results indicated that soil water content, pH value, aggregates >0.25mm, porosity and cation exchange capacity increased with application rate of the composite. The finer the composite in particle size, the more significant the effect on soil water content and aggregates >0.25mm. The use of the composite that has passed a 120 mesh sieve may increase the content of soil aggregates >0.25mm up to 13.3% ~ 16.2%. |
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| Keywords: | Water-preserving composite Attapulgite Soil aggregates Bulk density Cation exchange capacity |
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