中国稻米

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播期对不同软米粳稻品种产量、生育期及温光资源利用的影响

  1. 1 扬州大学 江苏省作物遗传生理重点实验室,扬州 225009;2 扬州大学 农业部长江流域稻作技术创新中心,扬州 225009
  • 出版日期:2018-03-20 发布日期:2018-03-20
  • 通讯作者: 张洪程
  • 基金资助:

    国家重点研发计划项目(2016YFD0300503);江苏省重点研发计划项目(BE2016344);江苏省农业科技自主创新基金项目(CX[12]1003-9)

Effects of Sowing Date on Yield, Growth Period and Utilization of Temperature and Light in Different Japonica Rice Cultivars

  • Online:2018-03-20 Published:2018-03-20

摘要:

在扬州地区稻麦两熟制下,以不同生育期的粳稻品种为供试材料,设置6个播期,研究播期对不同类型水稻产量、生育期、温光资源利用的影响。结果表明,随播期的推迟,不同类型水稻品种的产量呈减少的趋势,差异达到显著或极显著水平。播期对不同类型水稻生育期及温光资源利用有较大的影响,随着播期的推迟,3种类型水稻品种的主要生育期延迟,全生育天数缩短,总体表现为播期每推迟1 d,全生育期缩短0.5 d左右。各类型品种的适宜播期中熟中粳稻和早熟晚粳稻为5月中旬,迟熟中粳稻为5月中旬至5月下旬。

关键词: 水稻, 播期, 生育期, 温光利用

Abstract:

The effects of sowing date on the yield, growth period and the utilization of temperature and light resources in different japonica rice were studied. The results showed that the yield of different rice varieties decreased with the delay of sowing date, and the difference was significant or extremely significant. With the delay of the sowing date, the main growth period and whole growth period of the three types of japonica rice varieties wete delayed. The whole growth period was shortened about 0.5 d when the sowing date delayed by 1 day. The suitable sowing date of medium maturing japonica rice and early maturing late japonica rice was announced around mid-May, and the suitable sowing date of late maturing japonica rice was from mid-May to late-May.

Key words: rice, sowing date, growth stage, utilization of temperature and sunshine

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