If my husband do not want another child although we have one child only. How to convince my husband to try another child?

It's really depend, as i don't know your husband character. My husband don't want kid, and we have girl. (His friends play apart too, as his friend just start a family and share with him it's good to have a kid too.) He don't want 2nd kid, and we have a boy. (Again his friend play apart too, cause he have 2nd kid too. His friend show positive attitude of having 2 kids which result he is not so negative.) Friends around him play a part too. I didn't ask his friend to say anything for him too. But you will tend to be having less help from him unless he change his thinking. As my husband is just enjoying the fatherhood without helping much. This way also good, less quarrels too.