气候变暖对石家庄冬小麦主要生育期的影响及对策

Impact of Warmer Climate on Main Growing Periods of Winter Wheat and Response Strategy

通过对石家庄近50年来气候资料和20多年来冬小麦主要生育期变化规律的分析,结果表明:20世纪90年代以来,石家庄冬春季升温明显,与之相适应的,冬小麦春季各生育期均有不同程度的提早,特别是1998年以后,各生育期提早更明显;通过对冬小麦各生育期与不同时段气温的相关分析可见,各生育期与春季气温呈反相关,对大多数生育期而言,它与返青到该生育期之间平均气温的相关性最好。在此基础上,提出了适应气候变化的冬小麦栽培管理对策。

Based on the climate data in recent 50 years in Shijiazhuang, the changes of the main growing periods of winter wheat in the last 20 years were analyzed. The results showed that the temperature in the winter and spring had obviously increased since 1990s, consequently each growing period of winter wheat in the spring beame earlier, in particular, since 1998. The negative correlation between the length of growing period and the temperature in the spring was found, and it was significantly from reviving stage to each growing stages in the spring. The response strategy for winter wheat cultivation to adapt the climate change was put forward.