8., Carya cathayensis brown spot caused by Cercospora juglandis kellerman &.
:以及山核桃的褐斑病(Cercospora juglandis kellerman et swingle.)收藏指正
9.The trace element content in unripe semen Areca has obvious difference compared with matured semen Areca. Pb content of the unripe semen Areca is 2. 21× 10-6 which is twenty times the Pb content of matured semen Areca.