摘要
为了揭示气候变化背景下冬小麦发育期的变化特征,以1981—2000年和2001—2011年2个时段山东省冬小麦发育期数据和气象站点数据为基础,通过研究2个时段的发育期变化和气候变化,绘制了2个时段山东省冬小麦发育期等值线图和气候资源差值的空间变化图,探讨气候变化对山东省冬小麦发育期的影响。结果表明,2001—2011年冬小麦发育期内日照时数明显减少,平均减少63.5h,积温平均增多120.3℃,降水量平均减少9.2mm。山东省冬小麦的播种期平均推迟3.3天,返青期、拔节期、抽穗扬花期和成熟期均有不同程度的提前。冬小麦的发育期除播种期外都与积温呈负相关,播种期与冬前积温和前茬作物的收获期关系密切。
In order to investigate the development of winter wheat growth stages under climate changes in Shandong Province and to determine possible causes of changes. Based on data of winter wheat growth stages and meteorological data from 1981 to 2011 in Shandong Province, diversification were investigated for two periods 1981 to 2000 （first period） and 2001 to 2011 （second period）. The two periods difference contour map of winter wheat growing period were drawing ,and the spatial variations maps of climate resources difference between two periods were carry out. The results showed that： the average sunshine duration of second was 63.5 hours less than the first, and the accumulated temperature increased 120.3~C, the average precipitation decreased of 9.2 mm. Compared to the two periods winter wheat growth stages, the sowing stage had been delayed about 3.3 days. The green stage, jointing stage, flowering stage and maturity stage had different degrees of advance. The developmental stages of winter wheat were closely correlated with the temperature.
出处
《中国农学通报》
CSCD
2013年第14期161-166,共6页
Chinese Agricultural Science Bulletin
基金
山东省气象局项目"基于GIS技术的山东省农业干旱监测"(2010sdqx204)
中国气象局公益性行业(气象)科研专项(GYHY201006041)
关键词
气候变化
冬小麦
发育期
山东省
climate change
winter wheat
growth stages
Shandong Province
