Other officials have said if production from the April harvest was enough, the ban would be extended to December from its original target of June 2005.
Rice is a staple food for Indonesia's 220 million people.
Milled rice output has been estimated to be 33.5-34 million tonnes this year, compared with estimated consumption of around 31 million tonnes.
Indonesia was self-sufficient in rice in the 1980s, but became an importer when millions of hectares of rice fields were converted into industrial parks and housing complexes.