摘要
使用地面平行观测资料，就甘肃陇东黄土高原作物冬小麦对气候变暖的响应进行初步比较分析。结果表明：1981年以来，冬小麦对气候变暖的响应主要表征为全生育期与越冬期缩短，返青期与成熟期提前；各发育阶段对增温的响应差异明显，增温使营养生长阶段的返青～起身～拔节和生殖生长阶段的开花及成热日期提前，乳熟日期和开花～成熟期间的总日数无明显变化，但增温使开花～乳熟有延长趋势，使乳熟～成熟有缩短趋势。产量随平均最低气温的升高和≥0℃、≥5℃、≥10℃及≥15℃积温的增加而增加，随≥20℃积温的增加而减少。表明乳熟期的高温天气对冬小麦产量有逼热减产的负作用。
Using the ground parallel observation data, the response of winter wheat to the climate warming on Loess Plateau of east Gansu was compared and analyzed. The result showed that the response of winter wheat to the climate warming was mainly that whole growth period and the winter period have been shortened; reviving period and maturity period has been advanced since 1981. The response to temperature increase is distinct in different growth phases, temperature increase makes reviving-rising-jointing of alimentation growth phase and blooming and maturity of procreation growth phase earlier, the days of milk maturity and blooming to maturity phase change not distinctly, but temperature increase leads to prolonging of blooming to milk maturity, shortening of days of milk maturity to maturity. The yield increases with increase of the lowest temperature, ≥0℃, ≥5℃ ,≥10℃ and ≥15℃ accumulated temperature, and reduce with increase of ≥20℃ accumulated temperature, which indicates that the high temperature weather compels to mature and reduces output of winter wheat yield.
出处
《干旱地区农业研究》
CSCD
北大核心
2007年第1期153-157,171,共6页
Agricultural Research in the Arid Areas
基金
中国气象局气候变化专项经费资助(CCSF2005-2-QH26)
关键词
黄土高原
冬小麦
生长
气候变暖
响应
Loess Plateau
winter wheat
growth
climate warming
response
作者简介
王位泰（1958-），男。高级工程师，主要从事气象业务管理及应用气候研究。E-mail：wangwt@gsma．gov．cn．
