My school policy for PhDs does not require any publications, but it's good to publish anyway. Recently my advisor asked me to write a journal paper, but I have more experiments to focus on.
Should I refuse him or just put my work on hold for a while? Personally I want to publish, but this time I am really not in position to write quality paper as I need focus on my work to finish my PhD on time.
You should sit down and have a talk with your adviser about this. It's your responsibility to ensure you're going to graduate on time. It's also important for you to publish your work. Publishing is an important part of research and getting a PhD is learning how to do research.
How a frank discussion with your adviser about the time restrictions you have and how to balance both commitments.