摘要
利用山西省境内较均匀分布的39个县(市)1991～2000年玉米单产和同期气象资料,分析了山西省玉米气候资源利用效率和玉米气候资源利用效率的区域分布特点。山西省玉米光能利用率平均为0.26%,热量利用效率平均为1.37kg/(℃·d·hm2),降水量利用效率平均为12.28kg/(mm·hm2)。玉米气候资源利用效率区域性、区域内差异明显。提高降水量和光能利用效率有助于提高气候资源综合利用效率。
Based on meteorological and maize yield data in 10 years（1991 - 2000）, the climatic resources utilization efficiency of maize in Shanxi province had been calculated and analyzed. The utilization efficiency of light was 0.26%, that of heat was 1.37 kg/（℃·d· hm^2）, and that of precipitation was 12.28 kg/（mm·hm^2）. The chmatlc resources utilization efficiency of maize had a great difference among region. The precipitation played an important role during maize growth The improving of utilization efficiency of precipitati on and light helped to the improving of climatic resources utilization efficiency.
出处
《玉米科学》
CAS
CSCD
北大核心
2008年第4期192-195,共4页
Journal of Maize Sciences
基金
山西省科技发展计划项目(2006031101-01)
山西省气象局项目(0622)
关键词
玉米
气候
资源利用
效率分析
Maize
Climate
Resources Utilization
Efficiency Analysis
