不同生育期干旱胁迫对双季稻产量及水分利用效率的影响  

Effects of Drought Stress at Different Growth Stages on Yield and Water Use Efficiency of Double-cropping Rice

作　　者：钱银飞[1] 关贤交[1] 邵彩虹[1] 邱才飞[1] 陈先茂[1] 陈金[1] 谢江[1] 邓国强[1] 彭春瑞[1] 

机构地区：[1]江西省农业科学院土壤肥料与资源环境研究所/农业部长江中下游作物生理生态与耕作重点实验室/国家红壤改良工程技术研究中心,江西南昌330200

出　　处：《江西农业学报》2016年第6期6-9,14,共5页Acta Agriculturae Jiangxi

基　　金：国家科技支撑计划项目(2011BAD16B04;2013BAD07B12;2012BAD15B03);江西省优势科技创新团队计划项目(20113B CB24014);江西省青年科学基金(20132BAB214012);江西省"赣鄱英才555工程"领军人才培养计划(双季稻清洁生产);江苏省作物栽培重点实验室开放课题(K11008)

摘　　要：通过盆栽试验,研究了不同生育期干旱对双季稻产量及其水分利用效率的影响,结果表明:所有干旱处理的产量均低于CK,各生育阶段的双季稻产量均随着土壤干旱的加剧而下降严重,而蒸发蒸腾量反之。双季超级稻产量和水分利用效率受干旱影响敏感程度排序表现出相同的变化趋势,早稻:拔节孕穗期>有效分蘖期>抽穗开花期>无效分蘖期>乳熟期,晚稻:拔节孕穗期>抽穗开花期>有效分蘖期>乳熟期>无效分蘖期。The effect of drought stress at different growth stages on the yield and water use efficiency（WUE） of the doublecropping super rice was studied through the pot experiment. The results indicated that the yield of the double-cropping super rice under the drought stress were lower than the CK, the seriously the drought stress lowed the yield in different growth stage, while the evaporation in the otherwise. The sort of the sensitive degree of yield affected by the drought stress of the different growing stage appeared the same as the WUE, the sort of the early rice appeared ： the jointing-booting stage〉effective tillering stage〉heading-florescence stage〉invalid tillering stage〉milky stage, while the late rice appeared the jointing-booting stage〉heading-florescence stage〉effective tillering stage〉milky stage〉invalid tillering stage.

关 键 词：双季超级稻 干旱胁迫 产量 水分利用效率 

分 类 号：S511[农业科学—作物学]