Writing is not an easy task, it requires lot of knowledge about a particular topic that the writer want to convey through his work. So reading is preferably a good habit for writers, in the case of blogging also knowledge is an important criteria for every blogger so he or she need to collect ideas from different sources through reading. In this century the habit of reading is going like an endangered species. The impact of technology is the main reason behind it. So lack of reading will effect in writing also, sometimes you will see some blog posts which was written without understanding the mind of the readers by the writers. Readers will came back to the site for future references I'd and only if that conveys the ideas I'm correct way.
There are two things that a blogger needed for writing a good post. Any one of it will help in conveying the idea if the author has, first is knowledge that we got from reading, if the writer has a habit of reading then his posts will have more information about the particular topic. Second is practical experience, if the blogger has practical experience of a particular thing then he or she can write about it in very good manner as the author has the idea about it. If you want to get practical experience about a particular thing then you should have to learn what to do in order to get the result. There also you need knowledge that knowledge can be made from reading. From this two cases, I will give preference to reading as blogging career is becoming competitive and only the best can achieve success. There are crores of blogs and websites are in the internet so in order to get some good result you need to develop quality posts, for that reading is an important thing. So stay forward and create a habit of reading for better success in blogging. All the best.