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( )幼虫危害后,林木幼树主干、大树枝梢形成瘤状虫瘿。
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( )幼虫危害后,林木幼树主干、大树枝梢形成瘤状虫瘿。
A、松墨天牛;
B、光肩星天牛;
C、白杨透翅蛾;
D、杨锦纹吉丁
时间:2021-09-01 23:53
关键词:
青书学堂
东北林业大学
森林昆虫学
答案解析
C
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( )幼虫危害后,林木枝梢部分形成纺锤状虫瘿。
( )幼虫危害后,林木幼树主干、大树枝梢形成瘤状虫瘿。
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松枯梢病从幼苗到幼树以至大树都能发病。可发生在芽、松针、枝梢、根茎等各部位,但主要发生于(),引起()。
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