Study on Improvements of Modifiers on Soil Water-Stable Aggregates and Its Mechanisms in Aeolian Sandy Soil

CAO Li-hua; ZHAO Shi-wei; ZHAO Yong-gang; LIANG Xiang-feng; YANG Yong-hui; LIU He-man

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Study on Improvements of Modifiers on Soil Water-Stable Aggregates and Its Mechanisms in Aeolian Sandy Soil

更新时间：2024-11-07

- Study on Improvements of Modifiers on Soil Water-Stable Aggregates and Its Mechanisms in Aeolian Sandy Soil
- Vol. 21, Issue 2, Pages: 65-68(2007)
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  CLC： S152.4S157.6
- Published：2007
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CAO Li-hua, ZHAO Shi-wei, ZHAO Yong-gang, et al. Study on Improvements of Modifiers on Soil Water-Stable Aggregates and Its Mechanisms in Aeolian Sandy Soil[J]. 2007, 21(2): 65-68.
DOI：

CAO Li-hua, ZHAO Shi-wei, ZHAO Yong-gang, et al. Study on Improvements of Modifiers on Soil Water-Stable Aggregates and Its Mechanisms in Aeolian Sandy Soil[J]. 2007, 21(2): 65-68. DOI：

摘要

采用PAM、β-环糊精、沃特保水剂、腐殖酸等4种土壤结构改良剂，通过室内土柱培养，以研究其对风沙土有效的改良效果，并探讨其作用机理和合理的施用浓度。结果表明，4种改良剂均可促进〉0．25mm水稳性团聚体的形成，在低浓度（0．05％～0．1％）下其趋势为：沃特保水剂〉β-环糊精〉PAM〉腐殖酸，在高浓度（0．2％～0．4％）下趋势为：PAM〉β-环糊精〉沃特保水剂〉腐殖酸。4种改良剂在浓度为0．05％～0．4％时，均可有效地降低风沙土团聚体的分形维数，改善风沙土结构，尤其沃特保水剂改良效果最明显。在低浓度下，4种改良剂均可有效地降低土壤容重。回归分析和方差分析表明，沃特保水剂主要作用于5～1mm粒径的团聚体，其适宜浓度为0．05％左右。

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Study on Improvements of Modifiers on Soil Water-Stable Aggregates and Its Mechanisms in Aeolian Sandy Soil

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