气象与环境学报2017，Vol.33Issue(5)：82-90,9.DOI:10.3969/j.issn.1673-503X.2017.05.011
1981—2010年锦州地区玉米生育期气象 因子变化及其与气象产量的关系
Change trends of meteorological factors during the maize growth period and their relationships with meteorological yield in Jinzhou during 1981-2010
摘要
Abstract
Based on daily meteorological data including temperature,precipitation and sunshine duration and maize yield in Jinzhou from 1981 to 2010,using correlation analysis,running average and Mann-Kendall test methods,the change trends of meteorological factors and their relationships with maize meteorological yield were investigated. The results show that the daily maximum and minimum temperature,the active accumulated temperature≥0℃ in-crease with a rate of 0. 359℃/10 a,0. 461℃/10 a,64. 593 (℃·d)/10 a,while daily temperature difference and sun-shine duration decrease with a rate of -0 . 102 ℃/10 a and -0 . 139 h/10 a and precipitation changes with a rate of 4. 183 mm/10 a in Jinzhou during recent thirty years,respectively. Meanwhile,there is no obvious abrupt cli-mate changes for temperature and precipitation, while the abrupt change points for sunshine duration appear in 1982,1985 and 1986. In addition,the daily maximum temperature and the active accumulated temperature ≥0 ℃increase significantly after 2000 and 2001,respectively. Inversely,all of the other factors do not show significantly abrupt climate changes. Moreover,small bell and flare opening,as well as tasseling stage,are the key periods when maize meteorological yield is susceptible. The major meteorological factors affecting maize meteorological yield are the daily maximum temperature,active accumulated temperature≥0℃ and sunshine duration and the next two are the daily minimum temperature and precipitation. The meteorological factors within a reasonable range promote the increase of the meteorological yields. On the contrary,they will be harmful to the growth and yield formation of maize when exceeding their corresponding threshold values.关键词
玉米/生育期/气象因子/气象产量/气候倾向率/突变检验Key words
Maize/Growth period/Meteorological factors/Meteorological yield/Change trend/Mann-Kendall test分类
农业科技引用本文复制引用
徐玉秀,蒋姗姗,周福然,温舟,白雪,史虹婷,胡明,张翠艳..1981—2010年锦州地区玉米生育期气象 因子变化及其与气象产量的关系[J].气象与环境学报,2017,33(5):82-90,9.基金项目
锦州市气象局科研课题"锦州市玉米生育期气象因子变化及其与气象产量关系"(201608)资助. （201608）
