Adding default web part in web part zone

Following is the code in my page layout.

<WebPartPages:WebPartZone id="page_detail" runat="server" title="Page Detail" PartChromeType="None"><ZoneTemplate></ZoneTemplate></WebPartPages:WebPartZone>

Is it possible to add a default web part here so when the page loads, that web part is already there rather than user has to cick on "Add a web part" link?

I would like to add Content Editor web part here.