作物学报Issue(10)：1819-1829,11.DOI:10.3724/SP.J.1006.2014.01819
水稻甬优12超高产群体分蘖特性及其与群体生产力的关系
Tillering Characteristics and Its Relationship with Population Productivity of Super-high Yield Rice Population of Yongyou 12
摘要
Abstract
We comparatively studied tillering and panicle formation characteristics of super-high and high yield populations formed by the regulation of cultivation measures using indica-japonica super rice Yongyou 12 transplanted by seedlings with tillers at the age of four leaves with one leaf bud. The results showed that yield from tillers and its contribution rate to total yield were 11.53 t ha-1 and 87.77%for super-high yield population, and 10.59 t ha-1 and 87.40%for high yield population. Super-high yield population had higher yield from primary and secondary tillers which were the major part contributed to total yield, the con-tribution rate to total yield of primary tillers for super-high yield population was slightly lower than that for high yield group, while that of secondary tillers, the contribution rate to total yield was higher in super-high yield population than in high yield population. For super-high yield population, the primary tillers emerged from leaf 1 to leaf 9 on main stem, among them the tillers from leaf 4 to leaf 7 had higher emerging rate and more panicles, secondary tillers emerged and earbeared mainly in 1/3, 2/3, 3/3, 2/4, 1/5. High yield population had higher emerging rate of triple tillers but lower panicle rate than super-high yield population, its primary tillers emerged and earbeared mainly in 4/0 to 7/0 while in the secondary tillers 1/3, 2/3, 3/3. Super-high yield population had higher mean values in panicle length, panicle weight, total grain number and grain density than high yield population, but seed-setting rate was slightly lower.关键词
甬优12/超高产/分蘖特性Key words
Yongyou 12/Super-high yield/Tillering characteristics引用本文复制引用
韦还和,霍中洋,许轲,魏海燕,李超,张洪程,孙玉海,孟天瑶,杨筠文,马荣荣,王晓燕,戴其根..水稻甬优12超高产群体分蘖特性及其与群体生产力的关系[J].作物学报,2014,(10):1819-1829,11.基金项目
本研究由农业部超级稻专项(02318802013231),粮食作物精确定量栽培技术研究与示范(201303102)和宁波市重大科技项目(2013C11001)资助。 （02318802013231）
