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- Title
北疆典型土壤纵向弥散系数试验.
- Authors
虎胆·吐马尔白; 穆丽德尔·托伙加; 朱珠
- Abstract
【Objective】 In order to explore the effect of different soil texture on soil longitudinal dispersion coefficient and dispersion degree.【Method】 According to the soil physics and hydrodynamic dispersion theory, typical sandy loam, silty loam and loam in northern xinjiang were taken as examples. NaCI was used as tracer and the longitudinal dispersion coefficient of one-dimensional vertical infiltration test was carried out in the laboratory.【Result】 Because of the coarse texture of sandy loam, soil compactness is not big, the liquid is easy to diffuse. The smaller the seepage velocity, the smaller the dispersion coefficient, and the larger the seepage velocity, the shorter the time to reach the peak of soil solute concentration, and the larger the peak concentration, and the smaller the vice versa. The seepage velocity of sandy loam was 0.020 cm/min, and the longitudinal dispersion degree was 2.88 cm. The silty loam was 0.018,1 cm/min and the longitudinal dispersion degree was 3.85 cm. The loam seepage velocity was the smallest at 0.011 cm/min, and the longitudinal dispersion degree was 2.44 cm.【Conclusion】 The results show that the dispersion coefficient depends on soil texture type and seepage velocity.
- Publication
Xinjiang Agricultural Sciences, 2021, Vol 58, Issue 1, p151
- ISSN
1001-4330
- Publication type
Article
- DOI
10.6048/j.issn.1001-4330.2021.01.018