While the Japanese environment ministry is proposing an ambitious target of reducing emissions by 45%, the industry ministry is pushing for a more conservative 35%, Kyodo said.
Officials at Japan's agriculture and finance ministries declined to comment on the report, but noted that the import figure for early March will be released on Wednesday.
The outlook for consumer sentiment is clouded as the government is expected to declare a renewed state of emergency over the coronavirus for the Greater Tokyo metropolitan area this week.