土壤干旱胁迫对8种景天属植物生长与生理生化指标的影响

摘要：景天是一种重要的园林绿化材料，选取8种景天进行土壤干旱胁迫处理，测定它们的土壤含水量，叶片相对含水量等6种生理生化指标，并观察景天的外部形态变化。最终对景天的抗旱性强弱进行排序：反曲景天>景天三七>德国景天+联合勘察加>凹叶景天>八宝景天+红花景天+主妇景天。

The Influence of Soil Drought Stress on 8 Kinds of Sedum's Growth and Physiological and Biochemical Indexes

Sedum is an important landscaping material. To provide a theoretical basis for the application of Sedum plants in water-saving landscaping, selected eight kinds of Sedum and began soil drought stress treatment on them. Through experimental methods of plant physiology, measured the soil moisture content, leaf relative water content and other six kinds of physiological and biochemical indexes, and observed the changes in the external morphology of eight Sedum. The results showed the order of draught resistance of eight kinds of Sedum is： Sedum rellexum〉Sedum aizoon L. 〉Sedum hybridum＋ Sedum kamtschaticum var. ellacombianum〉 Sedum enarginatum Migo〉Sedum spectabile Bureau ＋ Sedum spectabile ＇ Brilliant＇ ＋ Sedum x ＇ Matrona＇. In landscaping you can refer to the above test results and conduct this rational allocation of 8 Sedum.