| 干旱区分根交替膜下滴灌对棉花生长和水分利用效率的影响 |
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| 引用本文： | 苏里坦,虎胆·吐马尔白,张展羽.干旱区分根交替膜下滴灌对棉花生长和水分利用效率的影响[J].灌溉排水学报,2009(6). |
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| 作者姓名： | 苏里坦 虎胆·吐马尔白 张展羽 |
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| 作者单位： | 中科院新疆生态与地理研究所中科院绿洲生态与荒漠环境重点实验室;新疆农业大学水利与土木工程学院;河海大学现代农业水土工程学院; |
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| 基金项目： | 中国科学院“西部之光”人才培养计划项目(RCPY200602); 中国科学院知识创新重大项目(KZCX2-XB2-03-02) |
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| 摘 要： | 为探讨干旱区农业节水的途径,以棉花为供试作物,采用2种不同的灌水方式,研究了干旱区分根交替膜下滴灌对棉花生长和水分利用效率的影响。结果表明,在大田条件下,交替滴灌与常规滴灌的光合速率相比差异未达到显著水平,棉花株高在交替滴灌处理下均大于常规滴灌处理,而交替滴灌处理下蒸腾速率在整个生育期均低于常规滴灌处理。交替滴灌使棉花根系经受一定程度的水分胁迫锻炼,从而刺激根系的生长发育,因此交替滴灌对棉花根系生长有显著促进作用。相比常规滴灌,交替滴灌抑制了棉花蒸腾速率,即交替滴灌通过减少棵间蒸发和作物蒸腾耗水来提高了棉花的水分利用效率。同等产量水平下与常规滴灌相比,干旱区棉花交替滴灌可节省20.3%的灌水量,节水效果明显。
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| 关 键 词： | 干旱区 交替滴灌 棉花 水分利用效率 |
Effect of Alternate Partial Root-Zone Drip Irrigation on Growth and Water Use Efficiency of Cotton in Arid Regions |
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| Institution: | SU Litan1,HU Dan·Tumarbay2,ZHANG Zhan-yu3 (1.Xinjiang Institute of Ecology and Geography,CAS,Key Laboratory of Oasis Ecology and Desert Environment,Urimqi 830011,China,2.College of Hydraulic and Civil Engineering,Xinjiang Agricultural University,3.College of Modern Agricultural Water and Soil Engineering,Hohai University,Nanjing 210098,China) |
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| Abstract: | A field experiment was conducted to research the effect of alternate partial root-zone drip irrigation(APRD) and conventioal drip irrigation(CRD) on the growth and water use efficiency(WUE) of cotton.Results showed that although the photosynthesis rate(Pn) under APRD was not significantly affected compared with CRD,the cotton height was higher under APRD than under CRD,and the water use efficiency was lower under APRD than under CRD.Meanwhile,the compensating effects of root growth was observed,thereby ther... |
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| Keywords: | arid regions alternate partial root-zone drip irrigation cotton water use efficiency |
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