| Cite this article: | 唐蛟,王威,潘飞飞,等.沼液灌施对黄淮海平原潮土土壤团聚体组成及稳定性特征的影响[J].灌溉排水学报,0,():-. |
| tangjiao,wangwei,panfeifei,et al.沼液灌施对黄淮海平原潮土土壤团聚体组成及稳定性特征的影响[J].灌溉排水学报,0,():-. |
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| Effects of Biogas Slurry Irrigation on Aggregate Composition and Stability of Fluvo-aquic Soil in the Huang-Huai-Hai Plain |
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tangjiao1, wangwei2, panfeifei3, yinjinzhong2, zhangxihuan2, wudafu2, mengxiaofeng2, duyiming2
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1.Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences;2.School of Resource and Environment, Henan Institute of Science and Technology;3.School of Horticulture and Landscape Architecture, Henan Institute of Science and Technology
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| Abstract: |
| 【Objective】In order to explore the effects of biogas slurry irrigation on soil aggregation structure in the Huang-Huai-Hai Plain, biogas slurry alone (BS), chemical fertilizer alone (CF), biogas slurry combined with chemical fertilizer (BS+CF) and blank control (CK) were conducted according to the equal nitrogen principle in fluvo-aquic soil.【Method】Aggregate fractions of different sizes were sieved and measured from topsoil and several aggregate stability indexes were calculated through dry and wet sieving method.【Result】These results showed that biogas slurry irrigation influenced aggregates particle compositions. Compared with the CK, all fertilization treatments increased mass proportions of >0.25 mm mechanical-stable aggregate (MR0.25) and significantly increased >0.25 mm water-stable aggregate (WR0.25) by 2.14%~3.17% and 56.44%~164.20%. Values of mechanical- stable and water-stable aggregate skewness constant (Cs) and kurtosis constant (CE) were also affected by fertilization treatments, which promoted aggregate stability by decreasing slaking by wet sieving and sustaining relatively balanced distribution, especially in the treatment of BS+CF. Meanwhile, biogas slurry irrigation significantly reduced the destruction rate of soil aggregates (PAD) and significantly increased water-stable aggregates stability. Lowest in PAD, while water-stable aggregate mean weight diameter (MWD) and geometric average diameter (GMD) gained the largest, as well as the least fractal dimension (wD) acquired in the treatment of BS+CF.【Conclusion】This fertilization pattern was recommended to improve soil structure and aggregate stability in this region. |
| Key words: biogas;slurry, soil;aggregates, aggregation;stability, particle;distribution, fluvo-aquic soil |
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