摘要
西北地区为我国气候变暖较明显区域之一,为明确主要农作物冬小麦对气候变暖的响应程度,选取我国西北地区农业气象观测站冬小麦的发育期资料,运用线性统计方法分析其20多a来冬小麦的生长发育变化特征,研究西北地区主要农作物的生长发育对气候变暖的响应程度。结果表明:(1)西北大部分地区冬小麦的播种日期推迟。(2)冬小麦的返青期受局地小气候及干旱等气候条件影响,大部分呈推迟趋势。(3)所选区域冬小麦均一致性地表现为成熟期提前。(4)西北地区大部分冬小麦返青—成熟期间的天数在缩短,仅甘肃庆阳和新疆莎车冬小麦返青—成熟期间的天数在延长,且延长趋势不显著。
Northwest China is one of the most obvious climate warming areas.To study on response of winter wheat as the main crops to global climate change in Northwest China,the data of winter wheat growth and development period were applied to analyze the variation tendencies of the winter wheat growth period in recent 20 years by linear trend analysis.The result shows：（1）The sowing date of the winter wheat had delayed in most parts of Northwest China.（2）The regreenig stage of the winter wheat had delayed in most parts of Northwest China,because of the effect of local microclimate and the drought etc.（3）The maturity stage of the winter wheat had advanced in consistency of the law.（4）The days between the regreening and maturity stages had shortened,which had been opposite in the Qingyang Gansu and Shache Xinjiang,and the tendency wasn＇t so obvious.
出处
《山西农业科学》
2011年第8期872-876,共5页
Journal of Shanxi Agricultural Sciences
基金
科技部科研院所社会公益研究专题(2005DIB3J100)
山西省科技攻关项目(2007031106-1)
关键词
气候变暖
冬小麦
生长发育期
返青期
成熟期
climate warming
winter wheat
growth period
regreening stage
maturity
