早籼中83-49高产株型及生理特性的研究

通过株型和生理特性研究,中83-49与广陆矮4号(简称广4)相比的特点是:苗期冠层叶开角大7～13.2°,株型较松散;穗期秆粗、叶挺、穗齐,中下叶层(高度为0～60cm)平均透光率17.3%,大5.14%.苗期耐寒、素质好,充实度6.91mg/cm,重0.61mg/cm;齐穗至成熟期 CGR,RGR 和 NAR,分别为24.49g/M^2·d,0.03g/g·d 和6.66g/M^2·d,高12.2%,6.9%和9.0%;籽粒容量25.88ml/千粒,大13.8%;叶、茎、鞘物质输出率21.54%,高3.07%;强弱势籽粒异步灌浆特点明显;讨论了该品种的高产栽培措施.

High-yielding rice variety Zhong 83-49

The early season indica rice variety Zhong83-49 was developed in 1981 as one of theFbreeding lines by selections from IR24/Yuanfengzao(F)//Zhuke 2.After various tri-als and tests,Zhong 83-49 has been proved to be a