The maximum quantity of sugar in respect of which quota certificates may be issued under section one of the Finance Act, 1934 (which, inter alia, provides a special preference in respect of colonial sugar), shall, as respects the financial year ending with the thirty-first day of March, nineteen hundred and fifty-one and subsequent financial years, be five hundred and twenty-five thousand tons, instead of four hundred thousand tons (the quantity allowed under section two of the Finance Act, 1944).