摘要
盆栽条件下对黄荆、山毛豆、金发草、狼尾草等10种重庆乡土植物幼苗采取控水方式进行水分胁迫处理,同时设置施用保水剂处理.测定了土壤含水量、叶片水势、土壤水势、比叶面积、蒸腾速率、气孔导度这几个影响植物抗旱性的主要指标,采用隶属函数法进行综合评定.结果表明:施用保水剂能够有效缓解干旱胁迫对植物的伤害.6种灌木耐旱性由强到弱依次为:黄荆、车桑子、山毛豆、截叶胡枝子、多花木兰、猪屎豆;4种草本耐旱性由强到弱依次为:金发草、狼尾草、头花蓼、斑茅.
In a pot experiment, ten native plants in Chongqing were exposed to simulated drought stress and treated with the water-retaining agent Aquasorb. The main influential indicators influencing drought tolerance of plants, i.e. soil water content, leaf water potential, soil water potential, specific leaf area, transpiration rate and stoma conductance, were determined, and the membership function method was employed to make a comprehensive assessment. The results showed that Aquasorb could effectively mitigate the injury under natural soil drought stress. Drought tolerance of the 6 bush plants was in the order of Vite3： negundo L〉Dodonaea viscosa （L.） Jacq. 〉 Tephrosia candida DC. 〉Leaspedeza cuneata〉Indigofera amblyantha〉Crotalaria pallida Aiton; and that of the 4 herb species was in the order of Pogonatherum paniceurn 〉 Penniseturn alopecuroides （L.） Spreng〉 Pol ygonum capitatumHam ex D · Don〉 Erianthusarundinaceus （Retz. ） Jesw.
出处
《西南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2009年第5期121-128,共8页
Journal of Southwest China Normal University(Natural Science Edition)
基金
重庆市建委资助项目(城科字2007第〔64〕号)
关键词
重庆
乡土植物
幼苗
耐旱性
Chongqing
native plant
seedling
drought resistance
