VCTCXO的ground在layout的时候需要什么样的特殊处理

thank you for your reply,seymour.
表层GND和主GND之间不应该有走线.
是这个意思吗? 没有别的吗?

it should be make a keepout area under the component, using the main GND as refence GND to avoid the parasitic capacitance.