摘要
根据河南省棉花播种面积权重,选出安阳、新乡、商丘、周口和南阳5个代表站,利用棉花产量与棉花生育期间5个代表站旬平均光照、温度、降水的相关系数,确定7个关键气象因子,建立了其与产量的回归方程,提出了考虑7个关键气象因子综合影响的棉花单产丰歉评估指标。应用该评估指标对1980~2004年棉花单产的丰歉进行检验,与实况一致的达84%,产量与评估指标相关系数达0.71以上,相关极显著。
According to the weights of the sowing areas of various cotton planting regions over Henan Province,five representative stations were selected.In terms of the correlative coefficients of cotton yields and the 10-day mean sunshine,temperature,and rainfall,seven key meteorological factors were determined,with which the regressive equations of cotton yields were established. The yield estimate indexes are presented,by which the cotton yields were estimated by using the indexes from 1980 to 2004.The results sho...
出处
《气象科技》
2005年第S1期141-144,共4页
Meteorological Science and Technology
基金
中国气象局预测减灾应用技术开发推广项目"农业气象试验站生态环境监测和信息服务试验示范"资助
关键词
棉花产量
气象因子
丰歉评估指标
cotton yield
meteorological factor
yield estimate index
