摘要
为研究播期对油后直播杂交稻产量及其性状的影响,选用30个不同基因型水稻品种,设计6种不同播期种植。结果表明,推迟播期对每株穗数、每穗着粒数、单株产量产生了负面影响,对结实率和千粒重产生了正面影响;随着播期的推迟,各基因型水稻品种的千粒重和结实率降幅较小,每穗着粒数和每株穗数降幅较大,导致单株产量表现出随播期的推迟而显著降低。根据水稻单株产量在不同播期下的极差和变异系数,对参试的30个基因型水稻进行聚类分析,分为钝感型、中间型和敏感型3类,从中选出单株产量对播期推迟反应不敏感的6个品种:宜香3724、B优827、C优725、B优0301、宜香2308、红优2009。
In order to study effects of seeding date on yield and yield traits of direct sowing hybrid rice after rape harvest, this paper used 30 different genotype rice cultivars in 6 different sowing period for planting. The results showed that delayed seeding date had a negative effect on the panicles per. grains per panicle and yield per plant, produced positive effect on filled grain percentage and 1000-grain weight on the whole. With the seeding date delaying, the genotypes of rice varieties of illed grain percentage and 1000-grain weight decreased less, the panicles per and grains per panicle decreased greatly. Based on the range and variation coefficient of yield per plant under different seeding dates, cluster analysis was performed on 30 genotypes, and the 30 genotypes were divided into insensitive type, intermediate type and sensitive type. Lastly, the paper picked out the seeding date postponed the insensitivity of 6 varieties of yield per plant, including Yixiang 3724, B-you827, C-you725, B-you0301, Yixiang2308, Hongyou2009.
出处
《广东农业科学》
CAS
CSCD
北大核心
2014年第13期1-5,共5页
Guangdong Agricultural Sciences
基金
国家"十二五"科技支撑计划项目(2013BAD07B13)
关键词
播期
油后直播
杂交稻
产量及其性状
seeding date
direct sowing after rape harvest
hybrid rice
yield and yield traits
