浅析美国白蛾在全国的发生扩散趋势及对策

On the occorrence and spread trend of Hyphantria cunea in China

2020年美国白蛾疫情持续扩散但势头减缓,发生面积74.64万hm^(2),整体轻度发生,局部地块危害偏重,全年疫情新增11个县级行政区。预测今后几年发生73.33万hm^(2),整体平稳发生,疫情扩散势头趋缓,局地可能出现新疫情。

In 2020, the epidemic situation of Hyphantria cunea in the United States continued to spread, but the trend slowed down, with an area of 746400 hectares. The overall situation was mild, and the damage of some plots was heavy. The epidemic situation in the whole year increased by 11 county-level administrative regions. It is predicted that 733300 hectares will occur in thesituation will be stable, the spread of the epidemic will slow down, and a new epidemic may appear locally.