摘要
用鲁西南1954~2007年冬小麦越冬前气象观测资料,分1954~1980年和1981~2007年两个阶段分别统计其气候要素特征和变化,采用相关分析等数理统计方法对比分析气候变暖对冬小麦播种期和越冬期的影响。结果表明:鲁西南地区1981年以来比1980年前冬小麦播种期间的平均气温约上升0.5℃,冬前积温增加17.8℃;冬小麦越冬期间的平均气温上升近1.0℃。由于气候变暖和品种更换的共同影响,冬小麦的适宜播种期较前27年推迟7天左右。为鲁西南冬小麦确定适宜播种期,减少冬小麦冻害、形成壮苗提供了依据。
The statistical characteristics and variation of climatic elements are analyzed on the basis of the meteorological observation data corresponding to the relevant periods of winter wheat growth from 1954 to 2007 in the southwestern Shandong Province,and the impacts of climate warming on the seeding time and overwintering period of winter wheat are studied with the correlative analysis method.The results show that compared with the period before 1980,the average air temperature at the seeding time of winter w...
出处
《气象科技》
2008年第5期609-611,共3页
Meteorological Science and Technology
关键词
气候变暖
冬小麦
播种期
climate warming
winter wheat
seeding time
