不同无土绿化基质对高羊茅生长的影响

Effects of Different Soilless Media on the Growth of Festuca arundinacea

在室内条件下,测定了4种新型无土绿化基质对高羊茅生长发育的影响。对生长指标进行方差分析和多重比较,通过主成分分析法最终确定了最优的基质配方。结果表明:(1)不同配方之间,高羊茅叶长、分蘖数、生物量之间差异显著;株高、叶宽、盖度之间差异不显著;(2)基质配方中磷、钾含量和pH值对高羊茅生长主要指标叶长、叶宽的影响较大。(3)用主成分函数表达式建立评价体系,基质综合得分:基质C>基质D>基质B>基质A。

Effects of 4 soilless media on the growth of Festuca arundinacea were investigated under indoor conditions. Principal component analysis was carried out on the optimization of the medium formulae. Leaf length, tiller and biomass of the plants growing in different media exhibited significant differences, however, plant height, leaf width and coverage had little differences. Content of K, P and pH of the medium had great impact on the growth of leaf length and width. Assessment system was established by principal function, the quality of the 4 media was in the order of C〉D〉B〉A.