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    崔莹莹, 吴家龙, 张池, 等. 不同生态类型蚯蚓对赤红壤和红壤团聚体分布和稳定性的影响[J]. 华南农业大学学报, 2020, 41(1): 83-90. doi: 10.7671/j.issn.1001-411X.201903034
    引用本文: 崔莹莹, 吴家龙, 张池, 等. 不同生态类型蚯蚓对赤红壤和红壤团聚体分布和稳定性的影响[J]. 华南农业大学学报, 2020, 41(1): 83-90. doi: 10.7671/j.issn.1001-411X.201903034
    shu
    CUI Yingying, WU Jialong, ZHANG Chi, et al. Impacts of different ecological types of earthworm on aggregate distribution and stability in typical latosolic red and red soils[J]. Journal of South China Agricultural University, 2020, 41(1): 83-90. doi: 10.7671/j.issn.1001-411X.201903034
    Citation: CUI Yingying, WU Jialong, ZHANG Chi, et al. Impacts of different ecological types of earthworm on aggregate distribution and stability in typical latosolic red and red soils[J]. Journal of South China Agricultural University, 2020, 41(1): 83-90. doi: 10.7671/j.issn.1001-411X.201903034
    shu

    不同生态类型蚯蚓对赤红壤和红壤团聚体分布和稳定性的影响

    Impacts of different ecological types of earthworm on aggregate distribution and stability in typical latosolic red and red soils

      摘要
    • 摘要:
      目的  综合分析华南地区不同生态类型蚯蚓对土壤团聚体分布、团聚体水稳定性以及土壤团聚体破坏率的影响，以期为蚯蚓改善土壤结构提供科学依据和理论支持。
      方法  采用室内盆栽培养试验，在华南地区具有代表性的赤红壤和红壤中分别接种生态类型不同的4种蚯蚓：赤子爱胜蚓Eisenia fetida、南美岸蚓Pontoscolex corethrurus、壮伟远盲蚓Amynthas robustus和参状远盲蚓A. aspergillum，研究不同生态类型蚯蚓对土壤结构的影响。
      结果  与空白对照相比，南美岸蚓、壮伟远盲蚓和参状远盲蚓的添加均显著增加了2种土壤中的大团聚体(d>2 000 μm)比例(P<0.05)，其中，赤红壤中其分别提升了35.20%、44.81%和37.88%，红壤中其分别提升了14.92%、25.31%和20.18%；与空白对照相比，壮伟远盲蚓的添加均显著降低了赤红壤水稳性大团聚体和水稳性小团聚体(250 μm≤d≤2 000 μm)的比例，却显著提升了赤红壤水稳性微团聚体(d<250 μm)的比例(37.84%，P<0.05)；4种蚯蚓的添加均显著提升了2种土壤的团聚体破坏率(P<0.05)，其中添加参状远盲蚓的2种土壤的团聚体破坏率均最低。主成分分析结果显示：在2种不同的土壤中，不同蚯蚓作用后土壤的团聚体分布和稳定性之间存在显著差异(P<0.05)。
      结论  华南不同生态类型的蚯蚓对赤红壤和红壤的团聚体分布和稳定性的影响不同；内栖型蚯蚓(南美岸蚓和壮伟远盲蚓)对土壤团聚体的形成和土壤结构的改善效果最好；深栖型蚯蚓(参状远盲蚓)对土壤水稳性团聚体的破坏作用最小。

       

      Abstract:
      Objective  To comprehensively analyze the effects of different ecological types of earthworm on soil aggregate distribution, water stability of aggregate and percentage of aggregate disruption (PAD) in South China, and provide scientific basis and theoretical support for utilizing earthworms to improve soil structure.
      Method  The laboratory culture experiment was carried out in this study. Eisenia fetida, Pontoscolex corethrurus, Amynthas robustus and A. aspergillum were added in typical latosolic red soil and red soil in South China to study the impacts of different ecological species of earthworm on soil structure.
      Result  Compared with the blank control, the addition of P. corethrurus, A. robustus and A. aspergillum significantly promoted the formation of large-aggregates (d > 2 000 μm) in two soil types ( P < 0.05), The large-aggregate proportion in latosolic red soil increased respectively by 35.20%, 44.81% and 37.88%, and increased respectively by 14.92%, 25.31% and 20.18% in red soil. A. robustus significantly reduced the contents of water stable large-aggregates (d > 2 000 μm) and small-aggregates (250 μm≤ d≤2 000 μm) in latosolic red soil, but significantly increased the proportion of water stable micro-aggregates (d < 250 μm, P < 0.05), which was 37.84% higher than that of the blank control. The addition of four types of earthworms significantly increased PAD values in both two soil types ( P < 0.05), and the PAD value in adding A. aspergillum treatment was the lowest. The results of principal component analysis showed that there were significant differences in the distributions and stabilities of soil aggregates under the action of different earthworms in two different soils (P < 0.05).
      Conclusion  The impacts of different earthworm types in South China on latosolic red soil and red soil aggregate distribution and stability are different. The endogenic earthworm (P. corethrurus and A. robustus) has the best impact on the improvement of soil structure. The endo-anecic (A. aspergillum) had the least destructive impact on water stable soil aggregate.

       

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