常用护坡草耐旱性研究

Research on drought-tolerant character of Guangdong slope protecting grasses

对广东地区常用4种护坡植物(百慕大草,黑麦草,糖蜜草,高羊茅)进行水分胁迫处理,观察不同时期植物的形态变化并测定其生理指标。结果表明:在水分胁迫下,叶片总叶绿素含量下降,脯氨酸含量增加;四种草本植物抗旱性由强到弱的顺序为:百慕大>糖蜜草>黑麦草>高羊茅;根系固坡保土能力依此为糖蜜草>高羊茅>百慕大>黑麦草。

Four grasses（Bermuda grass, ryegrass, molasses grass and tall fescue. ） were examined to study their draught resistance in Guangdong region slope protecting by regulation different soil water contents strictly.The results as follows： in under water stress,the total leaf chlorophyll content declines while proline content increases. Draught resistance order of the four herbs is ：Bermuda〉 molasses grass〉 ryegrass〉 tall fescue. Solid roots and soil slope capability is molasses grass〉 tall fescue〉 Bermuda〉 ryegrass.