Effects of deficit irrigation on cotton growth and water use efficiency: A review
- PMID: 33754579
- DOI: 10.13287/j.1001-9332.202103.026
Effects of deficit irrigation on cotton growth and water use efficiency: A review
Abstract
Cotton is one of the most important crops in the world. With the increasing scarce of global water resources, irrigation water will become a major limiting factor in cotton production. Deficit irrigation is an irrigation method which consumes less water than the normal evapotranspiration of crops. It is an effective water-saving method due to improved water use efficiency without sacrificing cotton yield and fiber quality. We summarized the effects of deficit irrigation on the growth and water use efficiency of cotton. The results showed that deficit irrigation promoted the transformation from vegetative growth to reproductive growth, reduced plant height, leaf area, and total biomass of cotton, and subsequently improved the harvest index, stem diameter and water use efficiency. Finally, based on the current research and combined with cotton production reality, the application and future development of deficit irrigation were proposed, which might provide theoretical guidance for the sustainable development of cotton plantation in arid areas.
棉花是世界上最主要的农作物之一。随着全球水资源的日益紧张,灌溉用水将成为限制棉花生产的主要因素。亏缺灌溉是一种低于作物正常腾发量的灌溉方式,可以在保证棉花产量和品质的前提下提高水分利用效率,是一种有效的节水灌溉方式。本文综述了亏缺灌溉对棉花生长和水分利用效率的影响。亏缺灌溉可以通过促进棉花由营养生长向生殖生长转化,降低棉花株高、叶面积、总生物量,从而提高收获指数、茎粗和水分利用效率。最后,综合现有的研究,结合棉花生产实际,提出亏缺灌溉应用推广建议,以期为旱区棉花可持续发展提供理论指导。.
Keywords: cotton; deficit irrigation; water use efficiency.
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