广东南亚热带广泛种植的5种草坪草的生物学特性及抗旱性比较

通过对形态特征的观察和人工干旱胁迫试验,初步探讨了广东南亚热带地区广泛种植的狗牙根Cynodon dactylon,细叶结缕草Zoysia tenuifolia,地毯草Axonopos compressus,假俭草Eremochloa ophiuroides和广金钱草Deamodium styracifoli 5种草坪草在土壤持续干旱过程中的形态变化,并分析了这5种草坪草的干旱适应能力以及它们的抗旱能力与生物学特性之间的联系.结果表明,在持续干旱胁迫条件下,5种草坪草的抗旱能力依次为:狗牙根＞细叶结缕草＞假俭草＞地毯草＞广金钱草.

Biological characters and drought resistance of five turfgrasses widely planted in south subtropical area of Guangdong province

Based on the observation of some morphological characters and the test of artificial droughtstress ,adaptabilityto drought stressin soil and morphological changes under drought stressin soil of fiveturfgrasses ,i.e.Cynodon dactylon,Zoysia tenuifolia,Eremochloa ophiuroide ,Axonopus compressusandDeamodiumstyracifolium, widely planted in south subtropical area of Guangdong province werestudied pri marily. We also analyzedthe relationship betweenthe drought resistance of the five turfgrassesand their biological characters.The results showthat the abilities of drought resistance for the five turf-grasses arefromstrongto weakasfollows :Cynodondactylon>Zoysiatenuifolia>Eremochloaophiu-roides>Axonopus compressus>Deamodiumstyracifolium.