河南省冬小麦干旱评估指标初探  

Preliminary Study on Drought Evaluation Indices of Winter Wheat in Henan

作　　者：方文松[1] 刘荣花[1] 马志红[1] 李树岩[1] 师丽魁[1] 

机构地区：[1]河南省气象科学研究所,郑州450003

出　　处：《气象与环境科学》2008年第3期12-14,共3页Meteorological and Environmental Sciences

基　　金：中国气象局气象新技术推广项目(CMATG2005M37;CMATG2007M38)资助

摘　　要：利用3次多项式对河南省100多个县(市)历史冬小麦产量资料进行分解处理,求出趋势产量和气象产量,然后用相对气象产量与小麦不同发育阶段的降水距平百分率进行相关分析,结果发现,冬小麦相对气象产量与不同发育阶段的降水距平百分率具有一定的相关性。在此基础上,建立了冬小麦相对气象产量与降水距平百分率的回归方程,并与农业干旱划分标准相结合,确定了冬小麦不同发育阶段、不同干旱等级的干旱指标。The historic yield of winter wheat of over one hundred counties is processed with cubic polynomial, and then the tendency yield and the relative meteorological yield are got. By analyzing the correlation between the relative meteorological yield and the precipitation anomaly percentage of winter wheat in different developmental phase, we can found that there are close relationship between them. Based on it the regression equations between them were established and combined with agriculture drought divisional standards,the different grade drought indices of winter wheat in different developmental phase was worked out.

关 键 词：冬小麦 评估 干旱 指标 

分 类 号：S423[农业科学—植物保护]