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中国农学通报

中国农学通报 ›› 2014, Vol. 30 ›› Issue (36): 22-27.doi: 10.11924/j.issn.1000-6850.2014-1721

所属专题： 水稻

• 农学 农业基础科学 • 上一篇    下一篇

超级杂交早稻分蘖期低温胁迫效应研究

宋忠华1,2,张艳贵1,黄晚华2,刘彬彧1,颜 盛1,周 玉3   

  1. (1湖南省长沙农业气象试验站,长沙 410125；2气象防灾减灾湖南省重点实验室,长沙 410118；3中国气象局气象干部培训学院湖南分院,长沙 410125）
  • 收稿日期:2014-06-19 修回日期:2015-01-09 接受日期:2014-07-17 出版日期:2015-03-20 发布日期:2015-03-20
  • 通讯作者: 宋忠华
  • 基金资助:
    公益性行业（气象）科研专项“超级稻超高产栽培气象保障技术研究”(GYHY201206045)；公益性行业（气象）科研专项“长江中下游高产优质双季稻主要农业气象灾害指标试验研究”(GYHY201006025)。

Effects of Tillering Stage Low Temperature Stress on Super Hybrid Early Rice

Song Zhonghua1,2, Zhang Yangui1, Huang Wanhua2, Liu Binyu1, Yan Sheng1, Zhou Yu3   

  1. (1Changsha Agrometeorological Experimental Station, Changsha 410125;2Key Lab of Hunan Province for Meteorological Disaster Prevention and Mitigation, Changsha 410118;3China Meteorological Academy Hunan Branch, Changsha 410125)
  • Received:2014-06-19 Revised:2015-01-09 Accepted:2014-07-17 Online:2015-03-20 Published:2015-03-20

摘要： 分蘖是影响水稻穗数进而影响单产的重要农艺性状，气象条件对分蘖有很大影响。为了研究超级杂交早稻分蘖期低温对分蘖的影响，以中熟超级杂交早稻组合‘淦鑫203’为材料，利用人工气候箱，采用人工控制方法，在分蘖始期进行温度和持续时间双因子胁迫试验，借助统计分析、多重比较、聚类分析等手段，分析了总穗数、有效穗的差异及其与温度和低温天数的关系。结果表明：总穗数、有效穗随温度的降低而减少，温度差异造成的总穗数、有效穗差异极其显著，分蘖期温度低于19℃，对分蘖极为不利；总穗数、有效穗随低温天数的增加而减少，但差异不显著，短时间的低温天气对分蘖的不利影响，同样不容忽视。

关键词: 评价, 评价

Abstract: Tillering is an important agronomic trait which influences rice panicle number and yield, and meteorological conditions have great influence on tillering stage. To study effects of tillering stage low temperature on super hybrid early rice tillering, this paper uses medium super hybrid early rice combined‘Ganxin 203’as the material, artificial climate box as test equipment, and adopts manual control method to have the stress test of the double factors (i.e. temperature and duration) at the tillering beginning stage. With the aid of methods such as statistical analysis, multiple comparison, cluster analysis and so on, the paper analyzes the differences between total spike number and effective panicle number, and their relationship with temperature and low temperature days. The results showed that, total spike number and effective panicle number reduce with the decrease of temperature, the differences of total spike number and effective panicle number caused by temperature difference are extremely significant, and temperatures lower than 19℃at the tillering stage do great harm to tillering; while total spike number and effective panicle number reduce with the increase of low temperature days, but the differences were not obvious, and the adverse effects of short-time cold weather could not be ignored.