摘要
以容城县农气站1981—2015年的逐日观测数据为基础,分析了保定市冬小麦适播期、越冬期负积温以及拔节至抽穗期需水量的变化,结果表明:冬小麦适播期有后延趋势,趋势变化率为0.759~0.627 d/10 a,但变化趋势不明显;越冬期负积温呈减少趋势,减少趋势率为24.3 (℃·d)/10 a,变化趋势率不明显;拔节至抽穗期需水量呈下降趋势,下降趋势率为下降趋势率为2.3 mm/10 a,同样变化趋势不明显。
Based on daily meteorological data of agricultural meteorological stations in Rongcheng from 1981 to 2015,the changes of winter wheat suitable sowing period,negative accumulated temperature during winter and the water requirement from jointing to heading stage in Baoding City were analyzed.The results showed that:the winter wheat suitable sowing period was postponed,the trend change rate was 0.759 to 0.627 d/10 a,which was not obvious.The negative accumulated temperature showed a decreasing trend during the overwintering,the decreasing trend rate was 24.3(℃·d)/10 a.Water requirement from jointing to heading stage showed a downward trend,while the downward trend rate was 2.3 mm/10 a,the tendency of change was not obvious.
作者
孙小诺
王蓉蓉
刘胜尧
魏丽欣
董泽亮
吴云龙
Sun Xiaonuo;Wang Rongrong;Liu Shengyao;Wei Lixin;Dong Zeliang;Wu Yunlong(Baoding Meteorological Bureau,Baoding 071000,Hebei,China;Agricultural Information and Economic Research Institute,Hebei Academy of Agriculture and Forestry Sciences,Shijiazhuang 050051,Hebei,China;Xinji Meteorological Bureau,Xinji 052360,Hebei,China)
出处
《农学学报》
2019年第6期70-73,共4页
Journal of Agriculture
基金
国家重点研发计划粮食丰产增效科技创新“黄淮海北部小麦-玉米种植制度优化与低平原资源高效型丰产技术模式创建”(2017YFD0300908)
关键词
气候变暖
冬小麦
越冬期
负积温
需水量
Climate Warming
Winter Wheat
Overwintering
Negative Temperature Accumulated
Water Requirement
