PROBLEM TO BE SOLVED: To provide a seeding mat pressing mechanism for a rice transplanter capable of more effectively controlling the uuwautel lifting and the side slip of a seedling mat in addition to a conventional seedling mat pressing mechanism. SOLUTION: In a rice transplanter comprising a seedling placing stand 16 equipped with a seedling mat pressing mechanism, a laminar seedling mat pressing mechanism 166 to be brought into contact with the seedling mat from the upper part of the seedling placing stand 16 is arranged at parts of insufficient seedling pressing by an existing seedling mat pressing mechanism 164, such as parts between seedling mat pressing rods 164b/164b or between the seedling mat pressing rods and between the seedling mat pressing rods 4b and seedling placing stand ribs 161.
