How do I create a local menu action to node/add/page? Here is the code in mymodule.links.action.yml to add a local action in a custom page (generated by the Views module).

amidori_utils.add_content:
  route_name: 'node.add_page'
  title: 'Add Content'
  appears_on:
    - view.admin_blogs.page_1


The above page will create a local action menu, which will take you to node/add page which will again list links to various content that you can create. 

What I want is to create a link to node/add/blog as a local action. How can I do it?

After watching to the content of the node.routing.yml file, I understand I need to use node.add as route, but I can't figure out how to pass blog as parameter to the end of the route.
Basing on this comment found on Local action links now provided by plugins using YAML discovery and implementing LocalActionInterface, this is the action declaration you should use.

amidori_utils.add_content:
  route_name: 'node.add'
  title: 'Add content'
  route_parameters:
    node_type: 'blog'
  appears_on:
      - view.admin_blogs.page_1


I take that, in your case, node_type should be simply blog, if that is the machine name for the content type you want to let users create.