벼, 팥, 들깨, 땅콩 작물 재배 농가 조사를 위한 표본설계

Abstract

In this paper, as part of the Rural Development Administration's “Statistical Research on Cultivation Status by Crop Breed for Development of Consumer-Customized Breed Support Technology,” which is being carried out from 2022, we focused on the scientific estimation of statistics related to the cultivation area and households engaged in cultivating four food crops including rice, red beans, perilla seeds, and peanuts. In the 2023 survey, we deal with four major crops among the total of 15 subjects, which are considered key food crops. By the 2022 agricultural management database (DB) as the population, we selected major cultivation areas based on the scale of cultivation households for each crop. For each crop, we distinguished between the entire stratum and the sample stratum concerning the cultivation area. The sample size, approximately 1,500 households, was allocated using proportional allocation, Neyman allocation, and, notably, employing a power allocation method that ensured stable expected target error values for each stratum, known as power allocation. Subsequently, for the calculation of crop-specific statistics, we conducted a weight adjustment based on the population of households in the database. The results include estimates for the total and average quantities for each crop and variety.