摘要
利用1980～2009年吉林省玉米产量的统计数据,应用波动理论分析吉林省玉米产量波动规律,考察吉林省玉米产量波动的历史过程和数量特征。结果表明,2000年前吉林省玉米产量波动具有短周期波动特征,2000年后具有长周期波动特征,产量波动主要是受农业政策变迁、自然灾害等因素的影响。
It was analyzed to the fluctuation of maize yield and investigated the historical process and quantitative characteristics of the fluctuation by using the statistical data of maize yield during 1980-2009 in Jilin province in this paper.The results showed that there was a short-period wave characteristic of the maize yield before 2000 and a long period wave characteristics after 2000,the maize yield fluctuations were mainly due to changes in agricultural policies,natural disasters and other factors.
出处
《玉米科学》
CAS
CSCD
北大核心
2011年第5期134-136,142,共4页
Journal of Maize Sciences
基金
国家科技计划项目"玉米生产风险预警模型研制及预警系统实证研究"(2009BADA9B03-05)
吉林省科技计划项目"吉林省现代农业发展模式与对策研究"(20100613)
关键词
玉米
波动周期
粮食产量
吉林省
Maize
Fluctuation cycles
Grain yield
Jilin province
