The provincial rural economy committee mapped out a detailed plan for land improvement on the basis of data on soil analysis of all paddy and non-paddy fields in the province and organized the work for implementing it in a substantial way.

The production of slaked lime has been stepped up to improve the soil in the Miru Plain.

Similar works have been conducted in Koksan, Singye, Hwangju, Kumchon and other counties and Sariwon City.