Find someone to jump deep into the sea; Step by step, stop the frog drum. meaning

The landlord's handwriting is wrong. The original text should be:

Find a person, deep in the sea of rice; Step by step, stop the frog drum ...

This is a poem in Sha Bai's Journey to a Water Town.

Literal translation:

If you want to find someone, you can only go to rice fields like the sea; Remind the frog next to you to stop croaking at every step.