| Cite this article: | 刘侠,吴军虎.天然沸石对土壤水分运动特性及水稳性团聚体的影响[J].灌溉排水学报,2020,(4):-. |
| Liu xia,WU Jun-hu.天然沸石对土壤水分运动特性及水稳性团聚体的影响[J].灌溉排水学报,2020,(4):-. |
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| DOI： |
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| Effect of Zeolite on Water Movement Characteristics and Water-Stable Aggregate of Black Clay |
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Liu xia, WU Jun-hu
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1. State Key Laboratory Base of Eco-hydraulic Engineering in Arid Area,Xi’an University of Technology,Xi’an 710048
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| Abstract: |
| In order to study the effects of 0%, 5%, 10%, 15% and 20% zeolite on soil water movement and soil water-stable aggregates, different proportions of zeolite were added to the soil. The results showed that zeolite could reduce the cumulative infiltration rate and infiltration rate of soil, and hinder the advance of wetting front. Compared with the control group, zeolite test group was added to the soil to study the effects of 0%, 5%, 10%, 15% and 20% zeolite on soil water movement and soil water-stable aggregates. The cumulative infiltration rate and infiltration rate are decreasing continuously, adding 20% zeolite, the cumulative infiltration rate, infiltration rate and wetting front decrease the largest extent; using Kostiakov and Philip infiltration model to fit test data, after fitting Kostiakov model and Philip model, R2 is greater than 0.99, the fitting effect is better, fitting parameters A and S are smaller than the control group, further verifying that zeolite has the effect of slowing down infiltration. The influence of zeolite on water-stable aggregates is related to its content. When zeolite content increases from 0 to 10%, the content of soil particles (> 0.25mm) increases from 10.8% to 18.3%, the fractal dimension decreases from 2.69 to 2.58, the content of zeolite continues to increase to 20%, the content of soil particles (> 0.25mm) decreases to 6%, and the fractal dimension increases to 2.72. The change of fractal dimension indicates that the addition of zeolite affects the soil. Soil aggregate content. . |
| Key words: Zeolite; soil agglomerates; soil conditioner |
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