衡水市夏玉米生育期气象因子变化趋势分析

Analysis on the Changing Trend of Meteorological Factors during the Growth Period of Summer Maize in Hengshui City

基于1990—2019年衡水市所辖5个县(市、区)气象因子逐日观测资料,依据衡水夏玉米生长发育规律划,选取了夏玉米关键生育期29个气象因子,分析了夏玉米关键生育期气象因子30年的变化特点。结果表明,其中吐丝期极端最高气温、播种期5 cm地温呈显著上升趋势,其他与温度相关的因子均呈波动上升趋势,未达到显著水平。各关键生育期平均降水量年际变化趋势不明显,日照时数均呈减少趋势,但未达到显著水平。

Based on the daily observation data of meteorological factors in 5 counties(cities and districts) under the jurisdiction of Hengshui City from 1990 to 2019, and according to the growth and development law of Summer Maize in Hengshui, 29 meteorological factors in the key growth period of summer maize were selected, and the variation characteristics of Meteorological factors in the key growth period of Summer Maize in 30years were analyzed. The results showed that the extreme maximum temperature in silking period and the ground temperature at 5 cm in sowing period showed a significant upward trend, and other temperature related factors showed a fluctuating upward trend, which did not reach a significant level. The interannual variation trend of average precipitation in each key growth period was not obvious, and the sunshine hours showed a decreasing trend,but did not reach a significant level.