2021年黄淮地区夏玉米南方锈病流行因素分析及防控对策

Epidemic factors of southern corn rust and control techniques used in Huanghuai area in 2021

黄淮地区是我国夏玉米重要产区,近年来由多堆柄锈菌Puccinia polysora Underw.引起的玉米南方锈病的发生与流行已成为黄淮地区玉米产量的主要限制因素,2021年玉米南方锈病在我国黄淮玉米产区大面积暴发流行,危害损失之严重历年罕见。本文介绍了2021年度黄淮地区玉米南方锈病的发生危害情况,分析了暴发流行的主要因素,并提出了今后的防控对策。

Huanghuai area is the main summer maize planting region in China.Recently,southern corn rust caused by Puccinia polysora Underw.has become the main limiting factor in maize production in this area.In 2021,southern corn rust outbroke in a large area in Huanghuai summer corn producing areas and led to significant economic loss.The severity of damage was rarely seen in recent years.In this paper,we introduced the occurrence and damage of southern corn rust in Huanghuai area,analyzed the main factors of outbreak and epidemic,and put forward the prevention and control countermeasures in the future.