How to deal with a postdoc supervisor who blocks all attempts to do reasonable research?
I'm not sure how did you get to work with him, and if you can simply leave whenever you have a better offer. But, if you are to continue with him, he will bury your career. He wants from you to publish low quality papers, he doesn't provide you the minimal resources and cuts your ties with collaborators. Going like that, it should not surprise you that in two more years you're not employable anymore as a postdoc. So, the first advise is to run as soon as you can. 

Where I live there are quite a few of this kind of "supervisors". They only need to publish a little every year to meet the requirements of the institution. They are also very good at isolating their students and postdocs from the rest of the community. That way they make sure they have enough people to supervise (needed to keep their research team leader status). People working with them slowly lose trust in their ability as scientists and cannot leave anymore to other labs. Worse even, many of these people are on temporary positions, so the supervisor uses this for their own gain.

It is unlikely that this person will change. If you cannot leave the university, it would be a good idea to try moving to a different supervisor at the same place. That will most likely make your current supervisor your enemy, but you aren't much better off with him as your friend. One of my colleagues did this because her supervisor would not assign her any work. The supervisor hates her now, but, at this moment, she's doing good research, so it seems to have been a good decision. In any case, it would be a bad idea to let your supervisor know of your intentions before having a new position.