It's not hard to imagine that, given the verses which say the waters shall be healed. The same living waters which Zechariah chapter 14 speaks about as going forth from Jerusalem to heal the sea. This living water is indeed a river, but it's not to water literal land or make literal plains spring forth. As even right in this controversial chapter 47 of Ezekiel, where we read of the healing waters for the salt sea, we see right along with it, the judgment side of salt. To not be healed, but given to salt, signifies the land will remain worthless or desolate where nothing can grow there.
Salt is the signification that it is made barren.
If you've ever seen pictures of the salt sea, with it's saline and chemical structures jutting from the waters, you can better understand it's barrenness. It is a figure of how those coming under God's judgment are left destitute. Salt on the land means it's polluted, that nothing good will grow there. It implies a heart problem, as her thoughts were on Sodom, not on her God, and she was judged there, as God turned her into a Pillar of salt. But his wife looked back from behind him, and she became a pillar of salt.