摘要
河北棉区位于棉花种植北界,该区南北跨度大,气候差异显著,棉花产量对气候条件的反映较敏感。本文利用河北省棉区1965-2005年的光、温、水与棉花产量资料,采用积分回归方法,首先确定影响河北省各棉区棉花产量的关键气候因子;其次,分别根据降水、气温、日照时数对棉花产量影响效应系数,把河北棉区各分为3个降水影响区、3个气温影响区和3个日照影响区;最后,采用滑动积分回归方法,分析各棉区3个因子对棉花产量影响效应的年际变化。
The cotton production area in Hebei Province is located in the north boundary of the cotton growing area. It has a large span from the south to the north, and the climate diversity here is so prominent that the cotton yield is sensitive to the climate conditions. Based on the data of the sunshine duration, temperature, precipitation and cotton yields from 1965 to 2005 in Hebei Province, the key climate factors affected cotton yields in the different cotton production areas were identified by the integral regression method. According to the impact coefficients of the precipitation, temperature and sunshine duration on the cotton yield, the cotton production area in Hebei Province was divided into three precipitation impact regions, three temperature impact regions and three sunshine duration impact regions. The inter-annual impact variations of the precipitation, temperature and sunshine duration on the cotton yield in the different cotton production areas were analyzed by the integral regression method.
出处
《中国农业气象》
CSCD
2008年第3期325-328,共4页
Chinese Journal of Agrometeorology
基金
河北省气象局科技开发项目(06ky09)
关键词
气候影响效应系数
棉花
河北省
Coefficient of climate impact
Cotton yield
Hebei Province