广东蔗区草地贪夜蛾为害调查初报

Preliminary report on the investigation of the damage of Spodoptera frugiperda in the sugarcane area of Guangdong Province

在广东省蔗区普查了迁飞入侵性害虫草地贪夜蛾Spodoptera frugiperda发生情况,确认在广东省该虫除为害玉米外,也为害果蔗和糖蔗。粤北、粤西和珠三角蔗区均已发现危害,为害程度从大到小依次为玉米、果蔗、糖蔗。甘蔗受害主要集中在5~6片叶至拔节初期,而果蔗伸长期可能仍会受害。加强对草地贪夜蛾田间监测,掌握蔗区该虫发生与防控情况,对该虫监测预警及防控有重要的参考价值。

The fall armyworm,Spodoptera frugiperda,is a migratory and invasive pest in Guangdong Province,and we investigated the damage of S.frugiperda in sugarcane area.The results showed that S.frugiperda had caused damage in Northern Guangdong,Western Guangdong and Pearl River Delta.Meanwhile,the damage caused by larvae was found on corn,sugarcane and sugar cane.The damage degree of S.frugiperda on corn was the most serious,followed by sugar cane and sugarcane.It was pointed out that the sugarcane was mainly damaged from 5~6 leaves to the early stage of jointing,and the sugar cane might still be damaged during the elongation period.It is even more necessary and urgent to carry out the monitoring and control of S.frugiperda in the future,and to master the detail information on the occurrence and control of S.frugiperda,which is important for monitoring,early warning and control of S.frugiperda in China.