2012年黄骅市第3代玉米粘虫暴发的气象条件分析

2012年8月上中旬,黄骅市第3代玉米粘虫大面积暴发流行,给玉米生产造成较大损失。分析玉米粘虫大面积暴发流行的气象学原因,结果表明:7月下旬连续出现的较强降水天气过程,使东北地区正在向南迁飞的2代玉米粘虫降落黄骅市,提供了较为丰富的虫源,同时低温高湿的气候条件也为3代玉米粘虫的迅速成长提供了环境,从而造成了2012年第3代玉米粘虫的大暴发。

Analysis of Meteorological Conditions for the Third Generation Corn Mythimnaseparata walker Outbreak in Huanghua City in 2012

Early and mid-August in 2012,the third generation corn Mythimnaseparata walker outbreak in a large area of Huanghua City,and caused heavy loss.This article analyzed meteorological conditions for a large outbreak of corn Mythimnaseparata walker.The results showed that the consecutive strong precipitation processes in late July made the second generation of corn Mythimnaseparata walker southward migration from the northeast region fell on Huanghua,which provided abundant insect sources for Huanghua City.Simultaneously,the climatic conditions of low temperature and a high relative humidity provided for the rapid growth conditions of the third generations of corn Mythimnaseparata walker,which ultimately result in the third generation corn Mythimnaseparata walker in a large outbreak in 2012.