中国稻米 ›› 2015, Vol. 21 ›› Issue (1): 45-47,51.DOI: 10.3969/j.issn.1006-8082.2015.01.010

• 品种与技术 • 上一篇    下一篇

豫南粳稻安全齐穗期和最佳播种期研究

  1. 河南省信阳市农业科学院,河南 信阳464000
  • 出版日期:2015-01-20 发布日期:2015-01-20
  • 基金资助:

    河南省重大科技专项“豫南稻区籼改粳技术研究与产业化”(121100110200)

Research on Safe Full Heading Dates and Optimum Sowing Dates of Japonica Rice in South of Henan Porvince

  • Online:2015-01-20 Published:2015-01-20

摘要: 应用河南省信阳市1951-2010年8-9月日平均温度资料,以连续3 d日平均气温不低于20℃作为豫南粳稻安全齐期界定指标,确定了80%保证率下的豫南粳稻安全齐穗期为9月6日;利用分期播种试验方法,对参试品种的生育期、产量结构和产量变化进行了分析,确定了参试品种的最佳齐穗期和最佳播种期。

关键词: 豫南, 粳稻, 安全齐穗期, 最佳播种期

Abstract: Based on daily average temperatures from August to September during 1951 to 2010 in Xinyang city, with the continuous three days daily average temperature not lower than 20 degrees as the indice of temperatures for the safe full heading dates of japonica rice in south of Henan Province, the 80% guarantee rate for the safe full heading dates of japonica rice in south of Henan Province was determined at September 6th. By using the method of  interval sowing experiments, the changes of growth period, yield and yield structure of testing varieties were analyzed, the safe full heading dates and optimum sowing dates of the testing varieties were determined.

Key words: south of Henan Porvince, japonica rice, safe full heading dates, optimum sowing dates

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