... lease and purchase and sale of land plots?
The rules for leasing land plots are established in the Law of Ukraine "On Land Leasing" dated October 6, 1998 No. 161-XIV.
The purchase and sale of land plots is regulated by civil legislation, the Land Code, the Law of Ukraine "On Amendments to Certain Legislative Acts of Ukraine Regarding the Creation of Conditions for Ensuring Food Security in Martial Law", the Law of Ukraine "On Amendments to Certain Legislative Acts of Ukraine Regarding the Conditions of Circulation agricultural lands".
PS: The last two laws amended the Land Code of Ukraine.