气候变化对郑州市冬小麦适宜播种期的影响  

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

作　　者：查菲娜[1] 程芳芳[1] 李红卫[1] 沈艳玲[1] 

机构地区：[1]郑州市气象局,郑州450048

出　　处：《中国农学通报》2012年第12期44-47,共4页Chinese Agricultural Science Bulletin

基　　金：郑州市科技攻关项目"郑州市主要农作物干旱监测预测研究及应用"(083SGYS34272)

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年和1991—2000年推后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。In order to evaluate effects of climate Zhengzhou City, the data of temperature and growth change on the suitable sowing time of winter wheat in 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 wheatwas during October 11 to 31.

关 键 词：气候变化 积温 冬小麦 播种期 

分 类 号：S512[农业科学—作物学]