장미 생산성에 영향을 미치는 요인분석

A Causal Analysis on Factors Affecting Productivity of Rose Farming in Chungbuk Area

The purpose of this paper was to provide some information about the underlying causal process in the rose farming systems. Athough there is growing body of literature on causal analysis with nominal data, only a limited set of techniques being appropriate for diagnosis of farming with interval data has been considered. To construct the causal model in rose farming we used the principal component regression analysis which can stabilize the parameter estimates by trading off unbiasedness in estimation for variance reduction. Among the coefficients of income effect in vinyl green house cultivation, some variables(cooperative management, yield, treatment before marketing etc) had positive effect on them. And other variables (facility type, basal fertilization heating facility, etc)had negative effect. Among the coefficient of income effect in the plowing cultivation, some variables (cooperative management, treatment before marketing, yield, etc) had positive effect but other variables(management cost, facility type, etc) had negative effect.