Only about half of New York City voters believe Mayor Bill de Blasio is performing well as chief executive, but that's an improvement, according to a Quinnipiac University poll released Wednesday.

The mayor's approval rating was 51 percent, up 6 points from March, the poll found. His disapproval rating was 28 percent, down from 34 percent in the previous survey.

In a demographic breakdown of yesterday's survey, 66 percent of black voters approve of de Blasio's job performance, 56 percent of Hispanic voters approve and 41 percent of white voters approve, with 42 percent disapproving.

Quinnipiac poll assistant director Maurice Carroll pointed out that black voters backed de Blasio overwhelmingly in the election, and that those voters have higher confidence in the mayor's character.

Overall, 64 percent of voters say de Blasio is trustworthy and honest.

Representatives for the mayor did not return a request for comment.

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The poll surveyed 1,033 voters between June 5 and Monday via landline and cellphone. It had a margin of error of plus or minus 3.1 percentage points.

Results showed the majority of voters -- 66 percent -- believe de Blasio should not ban Central Park's horse-drawn carriages. Twenty-six percent of voters support a ban.

New Yorkers are split, however, on whether de Blasio should lift the ban on ferrets as pets. Thirty-nine percent of voters support the idea while 42 percent do not, according to the poll.