Effect Of Different Irrigation Amount On Growth And Water Consumption Characteristics Of Sabina Vulgaris And Other Species

Urban green use too much ground water because of choosing inappropriate ornamental plant and landscape design, so it is very important to work on the water consumption of ornamental plant. A plot experiment was undertaken to study the most suitable plant and optimal rate of irrigation for urban green. It contains four plants, Sabina vulgaris, Prunus davidiana., Prunus monogolica and Prunus davidiana under different rate of irrigation. We measured plant high, ground diameter, biomass and rate of transpriation. The main results about our research are:(1) Plant biomass increased with increasing irrigation;(2) With the increase of irrigation amount, the transpiration rate for the test species have shown a clear upward trend;(3) The diurnal variation curves of water comsumption are different for these four plants.Sabina vulgaris and Prunus triloba are unimodal, Prunus monogolica is doublet. Fro Prunus davidiana, it is unimodal under T2and T3, but doublet at other treatments;(4) The drought tolerance of this four plants is Prunus monogolica> Sabina vulgaris> Prunus davidiana> Prunus triloba.(5) The precipitation between June and. September of2011is68mm, during this period the rate of irrigation for Prunus monogolica,Prunus davidiana, Prunus triloba and Sabina vulgaris is126.27mm、184.68mm、178.95mm irrigation and46.71mm irrigation.