主干上有病斑76 ~ 100个以上，病情指数40 ~50以上，材积损失率50%以上，应采取综合全面防治措施，或伐掉重新造林。

The spots on stem reach over 76 ~ 100, the disease index is 40 ~ 50, loss of volume is over 50%, large scale control must be carried out.

youdao

主干上有病斑76 ~ 100个以上，病情指数40 ~50以上，材积损失率50%以上，应采取综合全面防治措施，或伐掉重新造林。

The spots on stem reach over 76 ~ 100, the disease index is 40 ~ 50, loss of volume is over 50%, large scale control must be carried out.

youdao