1980—2016年通辽市科尔沁区玉米生育期与气象条件相关分析

Correlative Analysis of Maize Growth Period and Meteorological Condition in Horqin District of Tongliao City from 1980 to 2016

利用通辽国家基本气象站1980—2016年玉米作物发育期资料和同期逐日平均气温、最高气温、最低气温、降水量、日照时数观测资料,通过计算玉米不同发育期与光温水条件相关系数,分析气象条件对生育期的影响。结果表明:(1)近37a玉米播种日期在5月3日,成熟日期在9月18日,生育期140d,从播种到出苗日平均气温为21.3℃,平均最高气温27.2℃,平均最低气温15.7℃,平均日照时数为1201h,积温为2969.8℃,降水量为298.8mm。(2)玉米生育期日数与同期日照时数正相关显著,与降水量正相关,与气温负相关。(3)近37a,玉米生育期日数变化趋势不显著,但同期气温变化趋势显著,降水量和日照时数没有显著的变化趋势,但年际波动幅度较大。

Based on the observation data of corn development period and daily temperature(highest,lowest),precipitation and sunshine hours in Tongliao National Basic Weather Station from1980to2016,the correlation coefficient between different developmental stages and light and warm water conditions was calculated.Analyze the influence of meteorological conditions on the growth period.The results showed that:(1)the date of planting on May3,the mature date on September17,the growth period of144days,the average daily temperature of21.1℃,the average daily maximum temperature of27.2℃,the average daily minimum temperature of15.4℃average sunshine The sunshine time is1201h,the accumulated temperature is2738℃,the precipitation is285mm.(2)The number of days of maize growth was positively correlated with sunshine time in the same period,which was positively correlated with the correlation of precipitation and negatively correlated with the temperature.