摘要
为了分析气候变暖背景下,异常低温天气对冬小麦生育的影响,根据2009—2011年河北省小麦主产区气温、积温、降水、日照和发育期等观测资料,应用数理统计方法,系统分析低温天气过程对冬小麦生育的影响。结果表明,2010年度冬小麦受到冬前低温、冬季冷冬和春季持续低温的影响,河北省冬小麦冬前停止生长提前17天,返青、拔节和成熟分别推迟10天、8天和7天。2011年度冬小麦受到冬季低温和春季气温忽高忽低的影响,返青、拔节和成熟分别推迟7天、6天和4天。在气候变暖背景下,冬小麦生育期内出现的阶段性低温天气,使积温偏少,冬小麦生育期明显推迟。
It is very important to understand the impact of abnormal low temperature on crop growth and development under global warming.Based on the agrometeorological observation data of the wheat planting areas in Hebei Province,including temperature,precipitation,sunshine hours and accumulated temperature,and development stages from 2009 to 2011,the effect of the low temperature on the growth and development of winter wheat was analyzed by statistics methods.The results showed that the wheat growth stopping stages before winter was earlier 17 days than normal,but the regrowth stages,jointing and ripen stages were delayed 10,8,7 days,respectively,due to low temperatures from Nov.2009 to Apr.2010.Because of temperature fluctuations in the spring of 2011,the regrowth,jointing and ripen stages of winter wheat were put off 7,6,4 days,respectively.Under the background of climate warming,the growth and development stages of winter wheat were delayed greatly by abnormal weather and climate in the spring season,especially low temperature.
出处
《中国农学通报》
CSCD
2012年第18期306-310,共5页
Chinese Agricultural Science Bulletin
基金
公益性行业(气象)科研专项"遥感技术在作物生长模式及农业气象预报中的应用研究"(GYHY201106027)
"主要农作物生长动态监测与定量评价技术研究"(GYHY200906022)
关键词
气候变暖
异常气候
冬小麦
发育期
影响
河北省
climate warming； abnormal climate； winter wheat； development stages； effects； Hebei Province
