芳香灌木非洲蒿栽培对土壤性质的影响

J. H. Hansen-Quartey, S. Materechera, K. Nyamapfene
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引用次数: 2

摘要

草本芳香灌木非洲艾草(Artemisia afra)被认为是南非东开普省的本土植物。在自然环境中,无论植物生长在哪里,植物周围都会形成一块块坚硬的裸地。为了研究该植物的生长是否直接影响土壤的物理和化学性质,我们将灌木冠层下裸露斑块的土壤与具有相同土壤但从未种植蒿的相邻土地(对照)的土壤进行了比较。结果表明,尽管有机碳和容重在两种土壤间差异不显著,但黑穗槐下土壤团聚体稳定性(2.0 ~ 5.6 mm)显著高于对照(p < 0.01)。两种土壤的pH、Bray 1-P、电导率和交换阳离子(Ca、Mg、K、Na)含量无显著差异。分析了南芥提取物中存在的有机化合物。
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Soil properties as influenced by cultivation of the aromatic shrub Artemisia afra
The herbaceous aromatic shrub African wormwood (Artemisia afra) is thought to be indigenous to the Eastern Cape region of South Africa. In the natural environment, wherever the plant grows, patches of hard, bare ground develop around the plant. To investigate whether the growth of the plant directly affects the physical and chemical properties of the soil, we compared selected properties of soil from the bare patches beneath the canopy of the shrub with those from contiguous land with the same soil but where Artemisia had never been grown (control). The results showed that soil from under A. afra had significantly (p < 0.01) higher stability of aggregates (2.0–5.6 mm) than the control, in spite of the fact that the organic C and bulk density did not differ significantly between the two soils. There was no significant difference in the pH, Bray 1-P, electrical conductivity and exchangeable cations (Ca, Mg, K & Na) content of the two soils. Analysis of the organic compounds present in the A. afra extracts i...
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