灾害学2018，Vol.33Issue(1)：5-11,7.DOI:10.3969/j.issn.1000-811X.2018.01.002
高寒区温度三因子的时间变化及其与水稻产量的关系研究
The Temporal Change of Three Air Temperature Factors and Relationship Between Air Temperature and Rice Yield in Very Cold Region
摘要
Abstract
Based on the meteorological observation data and rice yield data from 44 meteorological stations in a very cold region—Heilongjiang province,the growth season(from May to September) was divided into 15 research periods and each research period included ten days,By introducing the daily average air temperature,minimum air temperature and maximum air temperature and using mathematical statistics method,temporal distribution characteristics and mutation characteristics of three temperature factors was investigated,and the correlation between temperature and rice yield was analyzed.Results showed that the air temperature rose in each research period of the growth period in the study area from 1980 to 2014,and the minimum air temperature increased significantly.The air temperature raised quickly in the period between May and June,and minimum air temperature and maxi mum air temperature increased non-symmetrically.The air temperature factors mutated in mid-May,late-May,late-June,early-July,mid-July,mid-September and late-September during 1980 to 2014,mutation occurred mainly from the late 1980s to the early 21st century,the air temperature changed dramatically,it increased 1.2 ～ 2.2 ℃ after the mutation.During the study period,correlation between the air temperature factors and rice yield was significant in many research periods of the growth season in the study area(P ＜ 0.01,P ＜ 0.05),and the correlation was the most from May to July,the minimum air temperature was very significantly correlated to the rice yield.The correlation between the air temperature of single factor and rice yield was positively significant in the different research period during 1980 to 2014,which showed that the air temperature was favorable to rice yield and leaded to rice yield increasing.The each air temperature increased 1℃,rice yield increased 307 ～ 7 222 kg/hm-2.关键词
高寒区/温度三因子/时间变化/水稻产量Key words
very cold region/three factors of air temperature/the temporal change/rice yield分类
资源环境引用本文复制引用
姜丽霞,宫丽娟,刘泽恩,于瑛楠,王铭,赵慧颖..高寒区温度三因子的时间变化及其与水稻产量的关系研究[J].灾害学,2018,33(1):5-11,7.基金项目
中国气象局气候变化专项(CCSF201606) （CCSF201606）
中国气象局核心业务发展专项(CMAHX20160205) （CMAHX20160205）
