首页 | 官方网站   微博 | 高级检索  
     

分根交替灌水对棉花生长、光合与水分利用效率的影响
引用本文:潘丽萍,李彦,唐立松.分根交替灌水对棉花生长、光合与水分利用效率的影响[J].棉花学报,2010,22(2):138-144.
作者姓名:潘丽萍  李彦  唐立松
作者单位:1. 中国科学院新疆生态与地理研究所阜康荒漠生态站,乌鲁木齐,830011;中国科学院研究生院,北京,100039
2. 中国科学院新疆生态与地理研究所阜康荒漠生态站,乌鲁木齐,830011
基金项目:国家自然科学基金项目(40571031)
摘    要:应用部分根区干燥(PRD)技术,研究分根交替灌水(APRI)、分根固定灌水(FPRI)与全根系均匀灌水(BPRI)对盆栽棉花的生长、光合和水分利用效率的影响。结果表明:APRI黎明前与正午的叶水势均明显高于FPRI,而与BPRI无显著差异。APRI在叶片水分状况未变化时,显著降低了气孔导度,在维持光合作用不变的情况下,减少蒸腾量,瞬时水分利用效率与FPRI和BPRI相比分别提高了35.86%和63.51%。APRI处理的棉株在干旱复水后由于补偿效应,叶片生长速率和总叶面积较同等灌水量的FPRI分别提高了67.42%和27.16%。同时,干湿交替刺激APRI处理棉株的吸收根生长,其干重是FPRI的1.39倍。分根交替灌水在节水50%条件下,比同水量固定灌水处理的水分利用效率显著提高。

关 键 词:棉花  分根交替灌水  生长  光合  水分利用效率  
收稿时间:2009-08-12;

Effects of Alternate Partial Root-zone Irrigation on Plant Growth, Photosynthesis and Water Use Efficiency in Cotton
PAN Li-ping,LI Yan,TANG Li-song.Effects of Alternate Partial Root-zone Irrigation on Plant Growth, Photosynthesis and Water Use Efficiency in Cotton[J].Cotton Science,2010,22(2):138-144.
Authors:PAN Li-ping  LI Yan  TANG Li-song
Affiliation:1.Fukang Station of Desert Ecology & Xinjiang Institute of Ecology and Geography/a>;Chinese Academy of Sciences/a>;Urumqi/a>;Xinjiang 830011/a>;China/a>;2.Graduate School of Chinese Academy of Sciences/a>;Beijing 100039/a>;China
Abstract:In this experiment,using partial root-zone drying technique (PRD) with pot-grown cotton plants,we compared the plant growth,photosynthesis and water use efficiency with water stress under alternative partial root-zone irrigation (APRI),fixed partial root-zone irrigation (FPRI),and both partial root-zone irrigation (BPRI).It was found that the pre-dawn and midday leaf water potential in APRI and BPRI were approximately same,but higher than that in FPRI.Furthermore,the stomatal conductance in APRI decreased w...
Keywords:cotton  alternate partial root-zone irrigation  growth  photosynthesis  water use efficiency  
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《棉花学报》浏览原始摘要信息
点击此处可从《棉花学报》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号