吉林市极端气温变化特征及对玉米种植的影响分析

Influence and Countermeasures of Extreme Temperature Change Characteristics on Maize Planting in Jilin City

文章选取吉林市1991年—2020年逐日最高、最低气温气象观测资料作为研究对象,利用数学统计法对极端气温变化特征进行分析,探讨了对玉米种植的影响及相关对策。结果表明:吉林市极端高温主要出现在在5月—8月,以6月出现频率最高;极端最低气温集中在12月—次年2月,以1月出现频率最高;吉林市极端最高/最低气温均呈现出升降交替变化,以极端最低气温上升趋势较为显著;极端气温对玉米种植的影响较大,需要引起相关部门的高度关注。

This paper selected the meteorological observation data of daily maximum and minimum temperature in Jilin City from1991 to 2020 as the research object,analyzed the characteristics of extreme temperature changes using mathematical statistics,and discussed the impact on maize planting and relevant countermeasures.The results showed that the extreme high temperature in Jilin mainly occurs in May and August,with the highest frequency in June.The extreme minimum temperature is concentrated from December to February of the next year,with the highest frequency in January.The extreme maximum/minimum air temperature in Jilin City showed alternating changes,with the extreme minimum air temperature rising significantly.Extreme temperature has a great impact on maize cultivation,which needs to be highly concerned by relevant departments.