中水浇灌对3种绿地植物若干生理指标的影响

中水灌溉是缓解城市供水紧张和减少污水排放量的有效措施。通过短期盆栽试验和长期大田调查相结合的方法,以清水灌溉为对照;选用绿地植物台湾草、金叶假连翘和黄金榕为研究对象;以植物叶片中超氧化物歧化酶、过氧化物酶活性、丙二醛、脯氨酸含量、总叶绿素含量和叶片细胞膜透性6个生理指标作为评价。结果表明,在短期盆栽试验中,中水灌溉的三种植物叶片中总绿素含量显著高于对照,中水灌溉的台湾草叶片中的超氧化物歧化酶活性显著高于对照,其余指标差异不显著;长期大田调查的三种植物的6种指标在中水灌溉下与对照之间差异均不显著。

Influence of Reclaimed Water Irrigation on Several Physiological Indexes of Three Landscape Plants

Reclaimed water irrigation was an important way to deal with ease the tension in water supply in cities and solve the problem of sewage pollution. A pot experiment of short term and field trials of long term were conducted to study on physiological indices, which including the contents of prolin, MDA and chlorophyll in leaves, activities of SOD, POD and permeability of cell membrance. Three species, Zoysia tenuifolia, Duranta repens ‘Dwarf Yellow’ and Ficus microcarpa ‘Golden Leaves’ were selected in the experiments. The results indicated that to the short term, the chlorophyll content in leaf of the three plants and the activity of SOD in leaf of Zoysia tenuifolia of reclaimed water irrigation were significantly higher than those of normal water irrigation, and the other physiological indices were no significant differences between reclaimed water irrigation and normal water irrigation; to the long term, the physiological indices of the three plants were no significant differences between reclaimed water irrigation and normal water irrigation.