If you want more comments on your blog, ask people to leave comments on your blog. That’s it.
That’s how to get more comments on your blog
You can stop reading right now and you won’t be missing anything.
I currently have comments disabled on this blog, but it hasn’t always been that way. I once had people leaving comments left right and center. It was fun. I loved responding — but it was also time consuming.
I now engage very heavily with everyone on Twitter and Facebook. It works for me.
That being said, if you have time to moderate comments, and you want more comments on your blog ASK and you shall receive.