作物研究Issue(5)：455-460,6.DOI:10.3969/j.issn.1001-5280.2014.05.02
分蘖期水分胁迫对不同栽培方式水稻生长发育及产量的影响
Effects of Water Stress at Tillering Stage on Rice Growth and Development and Yield of Rice under Different Cultivation Modes
摘要
Abstract
The effects of water stress at tillering stage on growth and yield of rice under different cultivation modes were studied with the pot experiment.The results showed that there existed great impact of water stress at tillering stage on tille-ring number,leaf area,root and yield under conventional cultivation (CK) and ridge&terraced cultivation (RT),and the seriousness of effects was consistent with the level of water stress.Mild stress could promote root growth ,moderate and se-vere stress restrained root growth.Under mild stress condition,rice grains,1 000-grain weight and seed setting rate in-creased,rice yield increased by 14.2%and 16.1%,water consumption decreased by 10.4%and 10.3%,water use effi-ciency increased by 21.8%and 22.7%.Under moderate stress condition ,rice yield decreased by 23.5%and 21.3%,wa-ter consumption decreased by 12.3% and 11.4%, water use efficiency decreased by 12.2% and 11.8%.Under severe stress condition,rice yield decreased by 41.6% and 45.4%,water consumption decreased by 15.6% and 16.1%,water use efficiency decreased by 30.4%and 35.3%.Compared with the conventional cultivation ,the leaf area ,root activity ,rice yield,water use efficiency in the ridge& terraced cultivation were increased by 11.5%,20.5%,15.2% and 17.3% re-spectively.Therefore,the mild water stress at tillering stage and ridge & terraced cultivation can improve the growth and yield of rice.关键词
水稻/垄作栽培/分蘖期/水分胁迫/产量Key words
Rice/Ridge&terraced cultivation/Tillering stage/Water stress/Yield分类
农业科技引用本文复制引用
姚林,郑华斌,刘建霞,贺慧,黄璜..分蘖期水分胁迫对不同栽培方式水稻生长发育及产量的影响[J].作物研究,2014,(5):455-460,6.基金项目
国家水稻丰产科技工程项目（2013BAD07B11）。 （）
