分蘖期冷水胁迫对水稻生长及产量的影响  

Effect of Cold-water Stress at Tillering Stage on Growth and Yield of Rice

作　　者：赵振东[1] 赵宏伟[1] 邹德堂[1] 王敬国[1] 刘化龙[1] 夏楠[1] 王爽[1] 姚晨[1] 吕艳超[1] 

机构地区：[1]东北农业大学农学院水稻研究所,哈尔滨150030

出　　处：《灌溉排水学报》2015年第11期30-34,共5页Journal of Irrigation and Drainage

基　　金："十二五"农村领域国家科技计划课题(2013BAD20B04);国家科技支撑计划项目(2011BAD16B11);国家科技支撑计划项目(2011BAD35B02-01-01)

摘　　要：以黑龙江省主栽品种东农428、松粳10、龙稻7为供试材料,常温灌溉为对照,研究了分蘖期不同历时(3、6、9、12、15d)冷水胁迫对水稻生长和产量的影响,并分析了冷水胁迫下生长指标与产量的关系。结果表明,随分蘖期冷水胁迫历时延长,水稻株高、分蘖数、出叶速度以及产量显著降低,最高分蘖数下降,最高分蘖出现日期和剑叶抽出时间推迟。冷水胁迫环境下,产量与株高、分蘖数和出叶速度显著或极显著正相关,与冷水胁迫历时极显著负相关。Three widely cultivated varieties,including Dongnong428,Songjing10 and Longdao7in Heilongjiang province,were used as experimental materials to study the effects of cold-water stress at tillering stage on growth and yield of rice,and the correlation analysis were conducted in different days（3d,6d,9d,12 d,15d）under cold-water irrigation and normal irrigation.The results showed that rice growth and yield were significantly affected by cold-water stress at tillering stage.With the increasing days of cold-water stress at tillering stage,plant height,tiller numbers,the rate of leaf appearance and yield decreased significantly.In addition,the maximum tiller number decreased,the date of maximum tiller and flag leaf postponed.There were significant positive correlations between yield and plant height,tiller numbers and the rate of leaf appearance,while there was a significant negative correlation between yield and cold-water stress days.

关 键 词：水稻 分蘖期 冷水胁迫 生长 产量 

分 类 号：S511[农业科学—作物学]