Asked about the future of nuclear plants in the country, 3 percent said there should be more, 29 percent said the current number of plants should be maintained, 50 percent said the number should be decreased, and 17 percent said the plants should be scrapped completely.

Asked whether operations should be resumed at plants that are offline, 16 percent said yes, 39 percent said no, and 44 percent said they cannot decide.

Asked if they're worried about nuclear plant accidents that could endanger nearby residents, 85 percent said they're worried strongly or to some extent, while 14 percent said they're not worried much or at all.

NHK also asked about radioactive wastewater accumulating in tanks at the Fukushima plant after cooling of molten nuclear fuel from damaged reactors.

A government subcommittee has suggested that a practical way to dispose of the contaminated wastewater is to discharge it into the sea or air after diluting it to levels meeting state requirements.

Asked whether the wastewater should be discharged into the sea, 18 percent said yes, 51 percent said no, and 30 percent said neither.