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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (12): 44-47.doi: 10.11924/j.issn.1000-6850.2011-2960

所属专题： 小麦； 农业气象

• 农学 农业基础科学 • 上一篇    下一篇

气候变化对郑州市冬小麦适宜播种期的影响

查菲娜 程芳芳 李红卫 沈艳玲   

  • 收稿日期:2011-10-12 修回日期:2011-12-06 出版日期:2012-04-25 发布日期:2012-04-25

Effects of Climate Change on the Suitable Sowing Time of Winter Wheat in Zhengzhou City

  • Received:2011-10-12 Revised:2011-12-06 Online:2012-04-25 Published:2012-04-25

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摘要：

为了探明气候变暖对郑州市冬小麦适宜播种期的影响，对郑州市1981—2010年间冬小麦冬前生长期内的正积温及其生长状况进行统计分析。结果表明：郑州市10—12月的正积温呈上升趋势，且与冬小麦冬前株高和分蘖数呈显著正相关，相关系数分别为0.720和0.495；同时1981—2010年间，稳定通过冬小麦适宜播种温度的日期呈推后趋势，2001—2010年以来稳定通过17℃的日期分别较1981—1990和1991—2000推后5天和6天，而稳定通过15℃的日期分别推后5天和4天。因此，初步认为郑州市冬小麦适宜播种期在10月中下旬。

关键词: 降解能力, 降解能力

Abstract:

In order to evaluate effects of climate change on the suitable sowing time of winter wheat in Zhengzhou City, the data of temperature and growth development of wheat were analyzed. The results indicated that: accumulated temperature from October to December were on the rise, and it had significant positive correlation between accumulated temperature and growth of wheat, correlation coefficient were 0.720 and 0.495; meanwhile the last day of suitable temperature for wheat sowing showed to postpone, for the last day of 17℃, 5 days and 6 days to postpone during 2001-2010 compared with 1981-1990 and 1991-2000, respectively. For the last day of 15℃ 5 days and 4 days to postpone during 2001-2010 compared with 1981-1990 and 1991-2000, respectively. So it was considered that, the suitable sowing time of winter wheat was during October 11 to 31.