In general, organic farming is only suitable in soil which contains at least 5 % organic matter, but 65 % of the soil in Taiwan contains less than 2 % organic matter, and in Chungliao the figure is only 0.9 %.
一般說來，有機質在 5 % 以上的土壤才適合做有機，台灣 65 % 的土壤有機質在 2 % 以下，而中寮更只有 0.9 %。