摘要
根据甘肃省岷县1959～1998年的年雹日和受灾面积历史资料,用统计学方法分析检验高炮防雹效果。经序列、wolch检验发现,高炮防雹后"年雹日"减少32.8%,"受灾面积"减少33.6%,显著性水平达到0.05,可信度达95%以上。
According to the annual hail day and disaster area historical data of Min Xian from 1959 to 1998, this paper analyzed the effect of artificial anti-hail with statistical method.The results show that yearly hail day and disaster area reduced 32.8% and 33.6% respectively after the artificial anti-hail, Getting remarkable level up to 0.05, the credibility is more than 95%.
出处
《甘肃气象》
2003年第2期37-38,41,共3页
Gansu Meteorology
关键词
岷县
高炮
人工防雹
防雹效果
检验
Antiaircraft gun
artificial anti-hail
effect
check
