Abstract
Abstract The study aims to find the formula for the standard area requirement for paddy fields to meet local food needs and recommend the area for food agriculture and the reserve area for sustainable food agriculture so as to ensure the preservation of self-sufficiency rice food. To achieve this objective, a projection of the quantity of food demanded is based on the food needs of the population per person and the predictions of the area of paddy fields capable of producing rice. The research was carried out using a technical approach to mathematics and socio-economics. Primary data and information were corrected using in-depth interviews, and secondary data was collected using the desktop study literacy method. The projection of paddy area, rice production, population, and demand for rice uses the linear trend method. The results of the study show that the standard formula for rice food requirements is equal to 10,000 multiplied by the rice food requirement per person divided by the productivity of rice farming multiplied by the rice cropping index in one year. The standard requirement for a paddy field area is 250m 2 per capita, and residents of East Lombok district are able to maintain self-sufficiency in rice food if they strive for farming productivity of 5.155 tons/hectare and a rice planting index of 151% in one year.