摘要
为研究西峰黄土高原冬季气候变化对冬小麦生长发育的影响,利用1981—2016年冬季平均气温距平和冬小麦发育期资料,分析了冬季平均气温距平的变化规律及其对冬小麦发育期的影响。结果表明,冬季平均气温最高值出现在1999年为-0.5℃,比常年偏高2.3℃,最低值出现在1985年为-4.9℃,比常年偏低2.1℃。总的来讲,冬季平均气温20世纪80年代偏低,90年代偏高,2001—2016年偏高。冬季平均气温距平随年代增加呈现上升趋势,上升速率为0.05℃/a。冬季平均气温与冬小麦各发育期均为反相关,反相关最显著的是抽穗期和乳熟期,相关系数为-0.50,其次是拔节期,相关系数为-0.49。冬暖年冬小麦的发育期在拔节期后比正常年提前,冬冷年冬小麦的发育期均比正常年推迟。
The paper aims to study the effect of average winter temperature on the growth and development of winter wheat in Xifeng loess plateau.We analyzed the change law of average winter temperature anomaly and its effect on the development period of winter wheat,based on relative data from 1981 to 2016.The results showed that:the highest average winter temperature was-years,and the lowest value was-4.9℃in 1985,2.1℃lower than that of normal years;in general,the average winter temperature was low in the 1980 s,high in the 1990 s,and also high in 2001-2016;the average winter temperature anomaly increased with the increase of the age at a rate of 0.05℃/a;the average winter temperate was inversely correlated with the development period of winter wheat,the most significant anti-correlation was heading and milking stages,with a correlation coefficient of-0.50,followed by jointing stage,the correlation coefficient was-0.49.The development period of winter wheat after jointing stage was earlier than normal years in warm winter,and later than normal years in cold winter.
作者
张红妮
周忠文
车向军
Zhang Hongni;Zhou Zhongwen;Che Xiangjun(Institute of Arid-meteorology,CMA/Key Laboratory of Arid Climate Change and Disaster Mitigation of Gansu,Lanzhou 730020;Qingyang Meteorological Bureau,Qingyang Gansu 745000)
出处
《中国农学通报》
2019年第10期95-98,共4页
Chinese Agricultural Science Bulletin
基金
甘肃省庆阳市气象局项目"陇东年际气候变化对农业布局的决策影响研究"(GSQYMACg2016-01)
关键词
黄土高原
冬季气温
变化规律
冬小麦发育期
影响分析
loess plateau
winter temperature
change law
development period of winter wheat
impact analysis
作者简介
第一作者:张红妮,女,1966年出生,甘肃正宁人,工程师,大专,主要从事农业气象观测工作。通信地址:745000甘肃省庆阳市西峰区兰州路4号甘肃省庆阳市气象局,Tel:0934-8213784,E-mail:qxjzhn@163.com。
