广西南友高速公路绿化边坡土壤特性研究

Study on the soil properties of the afforested slopes of Nan-You highway

对南友高速公路绿化边坡不同绿化植物类型的土壤特性进行调查,为南友高速公路的绿化管理提供科学依据;通过分析化验采集的土壤物理和化学样品,并对分析的数据进行F检验,结果表明:土壤物理性较差,土壤养分含量低;不同的绿化植物类型其土壤特性存在着显著或极显著差异。种植台湾相思和山毛豆的土壤特性好于糖蜜草和南美蟛蜞菊。建议多施氮肥、磷肥和有机肥并选用中性和碱性的肥料。

Based on the investigation of soil properties of different afforest plant types which grow on the afforested slopes of Nan- You highway, scientific references are proposed for the afforest management of Nan-You highway. The collected physical and chemical soil samples were tested and studied, and the F-test was applied on dealing with the analytical data, the results showed that the physical features of the soil was bad and the content of the soil nutrient was low. The soil properties of different afforest plant types had significant or extremely significant differences. The properties of the soil which plant Acacia confusa and Tephrosia candida were better than those plant Melinis minutiflora and Wedelia trilobata. More nitrogenous, phosphate and organic fertilizer were suggested, and neutral and alkaline fertilizer were recommended.