摘要
为促进新疆干旱区人工湿地竹柳栽培,以盆栽竹柳苗木为研究对象,设置淹水、湿(3 d浇灌1次)、适中(7 d浇灌1次)、旱(21 d浇灌1次)、极旱(30 d浇灌1次)5个水分处理梯度,通过对不同水分条件下竹柳生长、生理指标的测定及细胞形态的观察,研究水分胁迫对竹柳生长的影响。结果表明:随水分胁迫时间的延长,淹水组竹柳生成气生根,叶片变黄枝条细长,21 d和30 d组叶片卷曲、脱落,枝条萎缩、干枯。3 d和7 d组生存状态最佳;各处理细胞膜透性和MDA含量表现为淹水>3 d>7 d>21 d,说明长时间对竹柳进行干旱胁迫会破坏竹柳的生物膜结构。土壤含水率保持在15.5%~53.5%水平可能是竹柳的最佳生存状态。
In order to promote the cultivation of bamboo-willow in constructed wetlands in arid areas of Xinjiang,in this experiment,the potted bamboo-willow seedlings were taken as the object,and five water treatment gradients were set up,which were flooding,wet,moderate,dry and extremely dry.Through the measurement of growth,physiological indexes and observation of cell morphology of bamboo-willow under different water conditions,the effects of water stress on the growth of bamboo-willow were studied.The results showed that:with the extension of water stress time,the bamboo-willow in the flooding group took root by air,and the leaves became yellow and slender.The leaves in 21 d and 30 d groups were curled and fell off,and the branches shrank and dried.The survival status of the three and seven day groups was the best.The cell membrane permeability and MDA content of each treatment showed flooding>3 d>7 d>21 d,indicating that long-term drought stress will destroy the biofilm structure of bamboo-willow.The best survival state of bamboo-willow was to keep the soil moisture content in the range of 15.5%-53.5%.
作者
吴春霞
李阳
李昊宇
王文全
范敬龙
匡代洪
WU Chun-xia;LI Yang;LI Hao-yu;WANG Wen-quan;FAN Jing-long;KUANG Dai-hong(Activated Carbon Branch of National Energy Group Xinjiang Energy Limited Company,Urumqi 830000,China;College of Prataculture and Environmental Sciences,Xinjiang Agricultural University,Urumqi 830052,China;Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,China)
出处
《黑龙江农业科学》
2021年第10期96-103,共8页
Heilongjiang Agricultural Sciences
基金
新疆维吾尔自治区重点研发计划项目(2017B03014-3)
新疆维吾尔自治区土壤与植物生态过程重点实验室资助项目。
关键词
竹柳
水分胁迫
生长特性
生理特性
细胞形态
bamboo-willow
water stress
growth characteristics
physiological characteristics
cell morphology
