Increasing the production capacity of upland food crops is crucial for ensuring national self-sufficiency in various food commodities. By estimating the land area planted with different crops and analyzing soil fertility and potential yields, researchers found that optimizing upland areas could significantly boost production. If upland areas are increased from 37.7% to 70% of the total available, production capacity could nearly double for crops like rice, corn, and cassava. This expansion could lead to self-sufficiency in most food crops by 2050, except for soybeans, potatoes, and shallots. Extending upland agricultural areas for food crops is essential for maintaining self-sufficiency in rice and maize and promoting production of other food crops.