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作 者 ：余鹏, 李小华, 叶胜海, 赵小燕, 翟荣荣, 金庆生, 张小明

期 刊 ：核农学报 2016年 30卷 5期 页码：978-987

关键词：播期；常规晚粳稻；农艺性状；产量；

Keywords:seeding date, Japonica rice, agronomic traits, grain yield,

摘 要 ：为探明播期对浙江省常规晚粳稻的影响,确定大部分品种的最适播期,以16个浙江省常规晚粳稻代表品种为材料,依据浙江省生产实践,设置6个播期,对不同品种生长发育进程和产量变化进行研究。结果表明,播期对浙江省常规晚粳稻品种农艺性状和产量都有影响。播期推迟,新品种的齐穗期相应延迟,全生育期缩短,叶龄、株高降低,穗长呈变短趋势,每穗粒数和千粒重呈先升高后降低的趋势,多数品种适宜6月中旬播种。本研究为常规晚粳稻品种在生产上的合理播种与高产栽培提供了科学依据。

Abstract:In order to reveal the effect of seeding date on different conventional japonica rice varieties in Zhejiang province and confirm the optimum seeding date for most varieties. In the present study, 16 conventional japonica rice varieties in 6 different seeding dates were used to reveal the effect of seeding date on the agronomic traits and grain yield based on the production practice in Zhejiang province. The results showed as follows: the heading date was delayed. The growth duration were shortened with length of panicles, leaf age and plant height decreased, while grains per panicle and 1000-grain weight firstly rose and then declined. Considering all the above results, the optimum seeding date for most varieties is mid-June. This study could provide a reference for arranging seeding date to get high grain yield of conventional japonica rice varieties.

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