摘要
利用1961~2007年北疆棉区代表站气温、降水、日照时数资料,采用气候趋势系数等方法,分析了北疆棉区棉花生长季的气候变化特征,结果显示,北疆棉区棉花生长季呈现平均气温升高、降水增多、日照时数减少,初霜推迟、终霜提早、无霜期延长,10℃初日提早、终日推迟、持续天数延长、积温增加等特征。对比分析1991年以来的棉花发育期资料,棉花自播种至裂铃的各发育期均表现为提前的趋势,停止生长期略有推后,棉花全生育期天数增加。气候变化对北疆棉区棉花生产的影响以有利为主。
The data of four weather stations during Apr.to Oct.from 1961 to 2007 in Beijiang cotton planting region were analyzed using the climatic tendency coefficient,and the characteristics of climate change during cotton growth were also analyzed.The results were as follows： the temperature and the precipitation had been increasing,but the duration of sunshine decreasing.The date of the latest frost appearing was getting earlier and the date of the first frost was postponed.The 10℃ beginning date was getting earlier and the 10℃ ending date was postponed.The duration and accumulated temperature（≥10℃）all were increasing.Contrasted with the data of cotton growing date since 1991,each growing stage from seeding to split boll period of cotton became earlier and the growing period was delayed,and the whole growing season of cotton was delayed too.Warmer climate is advantageous to the cotton production in Beijiang cotton planting region.
出处
《干旱地区农业研究》
CSCD
北大核心
2011年第2期253-258,共6页
Agricultural Research in the Arid Areas
基金
新疆气象局“新疆粮棉作物产量动态预报新技术的研究”
新疆维吾尔自治区科技兴农项目“新疆农业气候资源综合区划技术应用推广”
科技部公益(气象)行业专项“西北旱作农业对气候变暖的响应特征及其预警和应对技术研究”(GY-HY200806021)
关键词
棉花生长期
气候变化特征
初终霜
积温
cotton growing period
climatic variation characteristics
the first and last date of frost
accumulated temperature
