中国农学通报2025，Vol.41Issue(3)：1-8,8.
"四特"晚籼稻选育、产量优势及生长发育特性
'Si te'Late Indica Rice:Breeding,Yield Advantage and Growth and Development Characteristics
摘要
Abstract
The aim was to explore the growth and development characteristics of'Si te'late indica rice and provide theoretical support for its promotion and application.Many years field tests were conducted,with the typical'Si te'late indica rice variety'Xiyou 447'and the main rice variety'Jinyou 207'in the middle and lower reaches of Yangtze River as experimental materials.Yield and growth characteristics were measured and breeding progress of'Si te'late indica rice was summarized.Whole growth period of'Xiyou 447'was 3-5 days shorter than that of'Jinyou 207',and yield was increased by 7.5%-19.4%.Yield advantage of'Xiyou 447'was mainly due to its synergistic improvement of dry matter accumulation and harvest index,as well as the higher total grain number per spike.The initial and terminal time of fast accumulation period of dry matter,nitrogen,phosphorus and potassium of'Xiyou 447'were later than'Jinyou 207',and mean accumulation speed was higher than'Jinyou 207'.Methane emission flux of'Xiyou 447'was higher than'Jinyou 207'at vegetative growth stage,but lower than'Jinyou 207'at heading and filling stage.In addition,'Xiyou 447'had higher lodging resistance,which was mainly due to its lower plant height,shorter basal internode and higher stem wall thickness.'Si te'late indica rice has short growth period,high yield,low methane emission and strong lodging resistance,so it has a good prospect for promotion and application.关键词
晚籼稻/选育/产量/生育期/干物质/甲烷排放/生长发育特性/抗倒伏能力Key words
late indica rice/breeding/yield/growth period/dry matter/methane emission/growth and development characteristics/lodging resistance分类
农业科技引用本文复制引用
李兴华,蔡星星,王欢,张盛,刘霞,周强.."四特"晚籼稻选育、产量优势及生长发育特性[J].中国农学通报,2025,41(3):1-8,8.基金项目
湖北省农业科技创新中心资助项目"优质高产抗病水稻新品种选育"(2016-620-001-03). （2016-620-001-03）
