Occurrence Dynamics of Ostrinia furnacalis and Application Effect of Biological Control Technology in Wafangdian, Liaoning Province  

作　　者：Zou Liwen Fu Bo Na Chengyong Su Xiaomeng 

机构地区：[1]Dalian Wafangdian Agricultural Technology Extension Center,Wafangdian 116300,China

出　　处：《Plant Diseases and Pests》2019年第5期20-23,共4页植物病虫害研究（英文版）

摘　　要：In order to determine the population dynamics of Ostrinia furnacalis and reasons of local heavy occurrence in Wafangdian,Liaoning Province,adult sexual attraction monitoring and larva damage investigation of O.furnacalis were carried out from 2016 to 2018.The results showed that the initial occurrence period of overwintering adults of O.furnacalis in 2017 and 2018 was 10-16 d earlier than that in 2016,and the occurrence period of adults in the field was extended for 22-26 d,with three occurrence peaks of adults;the number of young larvae in corn field increased significantly in early September.In 2017 and 2018,the control effects of Trichogramma dendrolimi release on the first generation of O.furnacalis in 2017 and 2018 were 70.65%and 67.84%,respectively,lower than that in 2016(76.19%).It is speculated that the difference of annual climatic conditions and adjustment of local planting structure are the main reasons for population dynamic changes of O.furnacalis.In order to determine the population dynamics of Ostrinia furnacalis and reasons of local heavy occurrence in Wafangdian, Liaoning Province, adult sexual attraction monitoring and larva damage investigation of O. furnacalis were carried out from 2016 to 2018. The results showed that the initial occurrence period of overwintering adults of O. furnacalis in 2017 and 2018 was 10-16 d earlier than that in 2016, and the occurrence period of adults in the field was extended for 22-26 d, with three occurrence peaks of adults; the number of young larvae in corn field in-creased significantly in early September. In 2017 and 2018, the control effects of Trichogramma dendrolimi release on the first generation of O. furnacalis in 2017 and 2018 were 70.65% and 67.84%, respectively, lower than that in 2016(76.19%). It is speculated that the difference of annual climatic conditions and adjustment of local planting structure are the main reasons for population dynamic changes of O. furnacalis.

关 键 词：OSTRINIA FURNACALIS Sexual ATTRACTION Population DYNAMICS TRICHOGRAMMA dendrolimi 

分 类 号：S435.132[农业科学—农业昆虫与害虫防治] S476[农业科学—植物保护]