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不同淹水程度对棉花苗期生长及生理变化的影响
引用本文:徐道青,郑曙峰,王维,刘小玲,吴文革,陈敏,阚画春.不同淹水程度对棉花苗期生长及生理变化的影响[J].农学学报,2016,6(2):33-38.
作者姓名:徐道青  郑曙峰  王维  刘小玲  吴文革  陈敏  阚画春
作者单位:1. 安徽省农业科学院棉花研究所/国家棉花改良中心安庆分中心,安徽安庆,246003;2. 安徽省农业科学院水稻研究所,合肥,230031
基金项目:公益性行业专项:“主要农作物涝渍灾害防控关键技术研究与示范”(201203032);安徽省农业科学院学科建设项目“安徽省机采棉关键农艺技术研究”(14A0724);安徽省农业科学院科技创新团队建设项目“棉花轻简化机械化关键技术创新团队”(13C0707)。
摘    要:为了明确棉花遭受涝害胁迫后的适应能力,采用盆栽种植方式,在避雨棚内对苗期棉株进行淹水,研究不同淹水程度下棉花形态、产物及生理变化.结果表明:淹水后棉花产量、单株成铃率、单铃重、株高、叶片数、单株干物质积累量均减少,而衣分没有变化;随着淹水时间的增加,各指标将进一步降低,淹水20天后,叶片SPAD值急剧下降,皮棉产量减少了80%以上,基本绝收.综合分析表明,淹水15天可以认为是棉花苗期适应涝害胁迫的临界时间,在此之前棉花可以通过栽培技术措施进行补救,恢复生长.

关 键 词:棉花  涝害胁迫  临界时间  恢复生长
收稿时间:2015/11/16 0:00:00
修稿时间:2015/11/30 0:00:00

Effect of Waterlogging Degree on Cotton Seedling Growth and Physiological Change
Abstract:In order to clarify the adaptability of cotton after waterlogging stres. cotton morphology, production and physiological changes at the seedling stage under different flooding degree were studied by using a pot experiment. The results showed that after flooding, cotton production, the rate of bolls per plant, boll weight, plant height, number of leaves and dry matter accumulation of per plant reduced, while Lint percentage did not change; with the flooding time increasing, various indicators continued reducing. after flooding 20d, leaf SPAD value declined rapidly, cotton lint yield decreased by more than 80%, even total crop failure. Overall, flooding 15d could be considered the critical time of cotton to adapt waterlogging stress during seedling stage , so cotton can resuming growing through cultural technique measure before the critical time.
Keywords:Cotton  Waterlogging Stress  Critical Time  Recovery Growth
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