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曾婷婷,黄晚华,童中华,陈安贤,等.不同播期对超级稻双季早稻产量结构的影响[J].中国农学通报,2018,34(27):17-21.曾婷婷,黄晚华,童中华,陈安贤,et al.Sowing Stage: Effect on Yield Components of Super Hybrid Early Rice[J].Chinese Agricultural Science Bulletin,2018,34(27):17-21
不同播期对超级稻双季早稻产量结构的影响
Sowing Stage: Effect on Yield Components of Super Hybrid Early Rice
投稿时间:2018-05-24  修订日期:2018-07-15
DOI:10.11924/j.issn.1000-6850.casb18050123
中文关键词: 超级稻早稻  分期播种  产量结构  气候条件  生育期
英文关键词: Super Hybrid Rice  Different sowing dates  Yield components  Climatic Conditions  Growth Stages
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基金项目:科技部十三五支撑项目“长江中游双季水稻和玉米光温生产潜力及产量差和效率差分布规律、限制因素与丰产增效潜力” (2016YFD0300101-05);中国气象局省级气象科研所科技创新项目“超级稻(双季)高产稳产气象保障技术推广应用”(GYHY201206020)。
作者单位E-mail
曾婷婷 湖南省益阳市气象局气象防灾减灾湖南省重点实验室 tifa.lockharter@hotmail.com 
黄晚华 气象防灾减灾湖南省重点实验室湖南省气象科研所 178485739@qq.com 
童中华 湖南省益阳市气象局 tim162@foxmail.com 
陈安贤 湖南省益阳市赫山区气象局 275624025@qq.com 
中文摘要:
      为摸清超级稻种植气候生态适应性,合理利用气候资源、合理安排播种期,减轻农业气象灾害对益阳地区双季超级早稻生产的影响, 以株两优819为试验材料,在益阳市赫山区连续2年进行分期播种试验,分析不同播期产量结构差异性及产量与气候条件之间的关联。结果表明:连续2年均以第三播期产量最高,不同气候年景下,超级稻产量年际变幅增加;超级稻双季早稻全生育期随着播期延后而缩短,不同播期超级稻双季早稻的差异主要体现在生殖生长阶段;总粒数与拔节至孕穗期间日平均气温≤22℃的天数呈负相关;乳熟至成熟期间日最高气温≥35℃持续日数是否超过5d可作为高温是否对其造成明显影响的临界指标。通过分期播种试验并结合气象资料分析,益阳地区超级稻双季早稻适宜播种时间为3月下旬后期至4月上旬。
英文摘要:
      The objectives are to learn the climatic and ecological adaptability of super rice cultivation, rationally utilize climate resources and arrange the sowing period, and reduce the effect of agricultural meteorological disasters on the yield of double-cropping super early rice in Yiyang. Taking‘Zhuliangyou 819’ as a test material, a two-year experiment of sowing rice by stages was conducted. The differences of yield components at different sowing stages were analyzed, and the correlation between yield and climate was also analyzed. The results showed that the yield of the third sowing stage was the highest in the two consecutive years and the yield variability increased under different climatic conditions; the whole growth period of super rice was shortened with the delay of sowing date and the differences of different sowing dates mainly displayed in reproductive stage; the grain number per panicle was negatively correlated with the number of days from stem elongation stage to booting stage whose daily average temperature was no more than 22℃; days from milk grain stage to mature grain stage whose maximum temperature was no less than 35℃ exceeding five days could be used as a critical indicator of the occurrence of high temperature damage. The most optimum sowing time for double-cropping super early rice is late March to early April in Yiyang.
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