摘要
选取2000—2019年平罗县地面气象资料、农业气象观测资料及国家统计局平罗县调查队产量数据,分析了玉米生育期气温、降水量、积温、生育期天数的变化趋势,利用相关系数法,研究了气象要素变化和产量的关系。结果表明,2000—2019年平罗县玉米生育期平均气温、平均最低气温呈下降趋势,平均最高气温呈上升趋势;降水量呈增加趋势;稳定通过0℃、10℃、15℃积温均呈下降趋势;各生育期平均日期均比历年最迟日期提前,全生育期日数呈减少趋势,播种期到拔节期日数呈减少趋势,拔节期到成熟期日数呈增加趋势;平罗县玉米平均产量呈增加趋势。≥0℃积温与单产在0.05水平上显著负相关,平均气温、平均最低气温、播种期到收获期天数与单产在0.01水平上显著负相关,平均最高气温、降水量、≥10℃积温、≥15℃积温与单产不相关。
This study analyzed the trends in temperature,precipitation,accumulated temperature,and duration of maize growth stages using surface meteorological data,agricultural meteorological observations,and maize yield data from the Pingluo County Statistical Survey Team from 2000 to 2019.The correlation coefficient method was used to examine the relationship between meteorological elements and maize yield.The results showed that the average temperature and average minimum temperature during the maize growth period in Pingluo County showed a decreasing trend,while the average maximum temperature showed an increasing trend.Precipitation showed an increasing trend.The accumulated temperatures above 0℃,10℃,and 15℃showed a decreasing trend.The average dates of each growth stage were earlier than previous years,and the total duration of the growth period showed a decreasing trend,with a decrease in the number of days from sowing to tasseling and an increase in the number of days from tasseling to maturity. The average maize yield in Pingluo County exhibited an increasing trend. The accumulated temperature above 0 ℃ had a significantly negative correlation with yield at the 0.05 level. The average temperature, average minimum temperature, and the number of days from sowing to harvest had a significantly negative correlation with yield at the 0.01 level. The average maximum temperature, precipitation, accumulated temperature above 10 ℃, and accumulated temperature above 15 ℃ showed no correlation with yield.
作者
张慧
王洪福
董国庆
李春艳
杨正兴
Zhang Hui;Wang Hongfu;Dong Guoqing;Li Chunyan;Yang Zhengxing(Key Laboratory of Characteristic Agricultural Meteorological Monitoring,Early Warning,and Risk Management in Arid Areas,China Meteorological Administration,Yinchuan,Ningxia 750002;Key Laboratory of Meteorological Disaster Prevention and Reduction in Ningxia,Yinchuan,Ningxia 750002;Pingluo County Meteorological Bureau,Pingluo,Ningxia 753400;Meteorological Bureau,Huinong,Ningxia 753600;Shahu Meteorological Station,Pingluo,Ningxia 753400)
出处
《宁夏农林科技》
2023年第7期5-9,16,共6页
Journal of Ningxia Agriculture and Forestry Science and Technology
基金
石嘴山市气象局自研项目“平罗县近十五年气候变化对玉米生育期进程和产量影响研究”。
关键词
气候变化
气象因子
玉米产量
平罗县
Climate change
Meteorological factors
Maize yield
Pingluo County