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首页> 外文期刊>Agricultural Research >Agricultural and Forestry Waste Composts as Substitutes for Peat in Potting Media: Effects on Root Growth and Fractal Features of New Guinea impatiens (Impatiens hawkeri)
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Agricultural and Forestry Waste Composts as Substitutes for Peat in Potting Media: Effects on Root Growth and Fractal Features of New Guinea impatiens (Impatiens hawkeri)

机译：农业和林业废料堆肥替代盆栽介质中的泥炭：对新几内亚凤仙花（Impatiens hawkeri）的根生长和分形特征的影响

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摘要

Peat is widely used as a growth substrate in horticultural soilless cultivation, but it is an expensive and nonrenewable resource. The objective of the present study was to assess the feasibility of using peat substitutes in the production of New Guinea impatiens (Impatiens hawkeri) by selecting garden waste compost, mushroom residue compost, soil, and peat as the media. No significant difference had been observed in total root length, root tips, and root fractal dimension at prophase when using 100% peat substrate with garden waste compost and peat mixed in a 1:1 treatment, whereas at a later period, the 1:1 mixture resulted in faster growth rate. Root fractal dimension and root abundance improved to different degrees when using garden waste compost and mushroom residue compost as substitutes; moreover, using garden waste compost contributed to maintain root growth, whereas mushroom residue compost was effective for generating fibrous roots. Hence, the results suggested that (1) garden waste compost could be ideal substitutes for peat in New Guinea impatiens production and have great potential during the later period of root growth and (2) a box-counting fractal model could be used for the study of plant root morphology and architecture as wellas being an effective method for analyzing root geometry and functional properties quantitatively.
机译：泥炭被广泛用作园艺无土栽培的生长基质，但它是一种昂贵且不可再生的资源。本研究的目的是通过选择花园垃圾堆肥，蘑菇渣堆肥，土壤和泥炭为介质，评估在新几内亚凤仙花（Impatiens hawkeri）生产中使用泥炭替代品的可行性。当使用100％泥炭基质与花园垃圾堆肥和泥炭以1：1处理混合时，前期的总根长，根尖和根分形维数没有显着差异，而在后期则为1：1混合导致更快的增长率。用园林废弃物堆肥和蘑菇渣堆肥替代时，根的分形维数和根系丰度均有不同程度的提高。此外，使用花园垃圾堆肥有助于维持根​​的生长，而蘑菇渣堆肥则可有效产生纤维根。因此，结果表明：（1）园林废弃物堆肥可以作为新几内亚凤仙花生产中泥炭的理想替代品，并且在根系生长后期具有很大的潜力;（2）可以使用盒计数分形模型进行研究植物根系形态和结构的研究是一种定量分析根系几何形状和功能特性的有效方法。

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