rice
稑 centers on rice as a crop, specifically an early-ripening variety of rice.
稑 combines 禾 (grain/rice plant) with 坴, which likely contributes the sound and may relate to an early-ripening quality. The exact historical development of 坴 is uncertain.
The grain radical 禾 beside 坴 suggests a special kind of rice. Picture a rice plant with an early harvest marker on the right, reminding you it ripens sooner than other rice.
For リク, imagine a lick of early rice: lick -> リク, and you taste the first grains of the season.